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* [question] free space of disk with btrfs is too different from other du
@ 2021-06-22 13:02 吴振宇
  2021-06-22 14:31 ` Su Yue
  0 siblings, 1 reply; 24+ messages in thread
From: 吴振宇 @ 2021-06-22 13:02 UTC (permalink / raw)
  To: linux-btrfs

[-- Attachment #1: Type: text/plain, Size: 3298 bytes --]

Sorry for my disturbance!

my disk with btrfs filesystem tell me it doesn't have enough free space:

```
$ sudo btrfs fi df /
Data, single: total=448.02GiB, used=427.74GiB
System, DUP: total=8.00MiB, used=64.00KiB
Metadata, DUP: total=8.80GiB, used=6.39GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
$ sudo btrfs fi usage /
Overall:
    Device size:                 465.64GiB
    Device allocated:            465.63GiB
    Device unallocated:            1.00MiB
    Device missing:                  0.00B
    Used:                        440.54GiB
    Free (estimated):             20.26GiB      (min: 20.26GiB)
    Data ratio:                       1.00
    Metadata ratio:                   2.00
    Global reserve:              512.00MiB      (used: 0.00B)
    Multiple profiles:                  no

Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
   /dev/sda2     448.02GiB

Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
   /dev/sda2      17.60GiB

System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
   /dev/sda2      16.00MiB

Unallocated:
   /dev/sda2       1.00MiB
$ sudo btrfs fi show /
Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
        Total devices 1 FS bytes used 434.14GiB
        devid    1 size 465.64GiB used 465.63GiB path /dev/sda2

$ df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
/dev/sda2      btrfs     466G  442G   21G  96% /
tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
/dev/sda1      vfat      128M  125M  2.9M  98% /boot
tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
```

however, i try to use gdu to scan my disk. it tell me

```
$ sudo gdu /
 gdu ~ Use arrow keys to navigate, press ? for help
 --- / ---
   49.9 GiB [#####     ] /usr
   15.1 GiB [#         ] /home
   11.1 GiB [#         ] /opt
    6.5 GiB [          ] /var
  930.8 MiB [          ] /lib
  124.9 MiB [          ] /boot
   55.2 MiB [          ] /root
   50.6 MiB [          ] /etc
   27.1 MiB [          ] /sbin
   23.5 MiB [          ] /lib64
   10.9 MiB [          ] /bin
. 312.0 KiB [          ] /tmp
   20.0 KiB [          ] /mnt
e   4.0 KiB [          ] /srv
e   4.0 KiB [          ] /tftproot
@   4.0 KiB [          ] media
 Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items: 2424046
Sorting by: size desc
```

427.76GiB or 83.8 GiB!

i know btrfs is a CoW filesystem, which means it will cost more space
to store a file. but the gap is too large, which it is hard to accept
the fact.
who can tell me what happened to my disk? and how can i do to rescue
my hard disk? the rest free space is not enough. if i cannot find the
solution, maybe i should format my hard disk to get more free space.
thanks.

there are some information which maybe useful.

```
$ uname -r
5.11.7-gentoo-x86_64
$ btrfs --version
btrfs-progs v5.9
$ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
Pasting > 25 kB often tend to fail with dpaste. Use --verbose or
--debug to see the
error output from wget if it fails. Alternatively use another pastebin service.
Your paste can be seen here: https://dpaste.com/FCZF83YYA
```

[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 81132 bytes --]

[    0.000000] Linux version 5.11.7-gentoo-x86_64 (root@WindowsOSX) (x86_64-pc-linux-gnu-gcc (Gentoo 9.2.0-r2 p3) 9.2.0, GNU ld (Gentoo 2.35.2 p1) 2.35.2) #1 SMP Fri Mar 19 22:14:29 CST 2021
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.11.7-gentoo-x86_64 root=UUID=644a9e91-5e05-4f5d-a79b-e0eccd21a1a8 ro console=tty0 console=ttyS0,115200n8 pcie_port_pm=off
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: xstate_offset[3]:  832, xstate_sizes[3]:   64
[    0.000000] x86/fpu: xstate_offset[4]:  896, xstate_sizes[4]:   64
[    0.000000] x86/fpu: Enabled xstate features 0x1f, context size is 960 bytes, using 'compacted' format.
[    0.000000] BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x0000000000057fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000000058000-0x0000000000058fff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000059000-0x000000000009efff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009f000-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000070e01fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000070e02000-0x0000000070e02fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000070e03000-0x0000000070e2cfff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000070e2d000-0x0000000070e7efff] usable
[    0.000000] BIOS-e820: [mem 0x0000000070e7f000-0x00000000713cdfff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000713ce000-0x0000000075203fff] usable
[    0.000000] BIOS-e820: [mem 0x0000000075204000-0x0000000077307fff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000077308000-0x0000000077339fff] ACPI data
[    0.000000] BIOS-e820: [mem 0x000000007733a000-0x0000000077b19fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000077b1a000-0x0000000077fa3fff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000077fa4000-0x0000000077ffdfff] type 20
[    0.000000] BIOS-e820: [mem 0x0000000077ffe000-0x0000000077ffefff] usable
[    0.000000] BIOS-e820: [mem 0x0000000078000000-0x00000000780fffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000e0000000-0x00000000efffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fe000000-0x00000000fe010fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x0000000283ffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.40 by American Megatrends
[    0.000000] efi: ESRT=0x77e60f98 ACPI=0x77312000 ACPI 2.0=0x77312000 SMBIOS=0xf05e0 SMBIOS 3.0=0xf0600 
[    0.000000] SMBIOS 3.0.0 present.
[    0.000000] DMI: Dell Inc. Vostro 14-5459/080W31, BIOS 1.0.8 12/02/2016
[    0.000000] tsc: Detected 2400.000 MHz processor
[    0.000672] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000676] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000683] last_pfn = 0x284000 max_arch_pfn = 0x400000000
[    0.000687] MTRR default type: write-back
[    0.000688] MTRR fixed ranges enabled:
[    0.000690]   00000-9FFFF write-back
[    0.000691]   A0000-BFFFF uncachable
[    0.000692]   C0000-FFFFF write-protect
[    0.000693] MTRR variable ranges enabled:
[    0.000694]   0 base 0080000000 mask 7F80000000 uncachable
[    0.000697]   1 base 007C000000 mask 7FFC000000 uncachable
[    0.000698]   2 base 007A000000 mask 7FFE000000 uncachable
[    0.000699]   3 base 0079000000 mask 7FFF000000 uncachable
[    0.000700]   4 base 0078800000 mask 7FFF800000 uncachable
[    0.000702]   5 disabled
[    0.000702]   6 disabled
[    0.000703]   7 disabled
[    0.000704]   8 disabled
[    0.000705]   9 disabled
[    0.000806] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
[    0.001802] last_pfn = 0x77fff max_arch_pfn = 0x400000000
[    0.008811] found SMP MP-table at [mem 0x000fcf70-0x000fcf7f]
[    0.008822] esrt: Reserving ESRT space from 0x0000000077e60f98 to 0x0000000077e60fd0.
[    0.008831] Using GB pages for direct mapping
[    0.009314] Secure boot could not be determined
[    0.009316] RAMDISK: [mem 0x2b3c1000-0x319d7fff]
[    0.009324] ACPI: Early table checksum verification disabled
[    0.009327] ACPI: RSDP 0x0000000077312000 000024 (v02 DELL  )
[    0.009332] ACPI: XSDT 0x00000000773120B8 0000EC (v01 DELL   QA09     01072009 AMI  00010013)
[    0.009338] ACPI: FACP 0x000000007732B0F0 00010C (v05 DELL   QA09     01072009 AMI  00010013)
[    0.009344] ACPI: DSDT 0x0000000077312230 018EB9 (v02 DELL   QA09     01072009 INTL 20120913)
[    0.009347] ACPI: FACS 0x0000000077B17F80 000040
[    0.009350] ACPI: APIC 0x000000007732B200 000084 (v03 DELL   QA09     01072009 AMI  00010013)
[    0.009354] ACPI: FPDT 0x000000007732B288 000044 (v01 DELL   QA09     01072009 AMI  00010013)
[    0.009357] ACPI: FIDT 0x000000007732B2D0 00009C (v01 DELL   QA09     01072009 AMI  00010013)
[    0.009360] ACPI: MCFG 0x000000007732B370 00003C (v01 DELL   QA09     01072009 MSFT 00000097)
[    0.009364] ACPI: HPET 0x000000007732B3B0 000038 (v01 DELL   QA09     01072009 AMI. 0005000B)
[    0.009367] ACPI: SSDT 0x000000007732B3E8 000315 (v01 SataRe SataTabl 00001000 INTL 20120913)
[    0.009371] ACPI: LPIT 0x000000007732B700 000094 (v01 INTEL  SKL-ULT  00000000 MSFT 0000005F)
[    0.009374] ACPI: SSDT 0x000000007732B798 000248 (v02 INTEL  sensrhub 00000000 INTL 20120913)
[    0.009377] ACPI: SSDT 0x000000007732B9E0 000ED1 (v02 INTEL  PtidDevc 00001000 INTL 20120913)
[    0.009381] ACPI: SSDT 0x000000007732C8B8 000C45 (v02 INTEL  Ther_Rvp 00001000 INTL 20120913)
[    0.009384] ACPI: DBGP 0x000000007732D500 000034 (v01 INTEL           00000000 MSFT 0000005F)
[    0.009388] ACPI: DBG2 0x000000007732D538 000054 (v00 INTEL           00000000 MSFT 0000005F)
[    0.009391] ACPI: SSDT 0x000000007732D590 0001FB (v02 INTEL  xh_rvp07 00000000 INTL 20120913)
[    0.009394] ACPI: SSDT 0x000000007732D790 003745 (v02 DptfTa DptfTabl 00001000 INTL 20120913)
[    0.009398] ACPI: BOOT 0x0000000077330ED8 000028 (v01 DELL   QA09     01072009 AMI  00010013)
[    0.009401] ACPI: SLIC 0x0000000077330F00 000176 (v01 DELL   QA09     01072009 AMI  00010013)
[    0.009404] ACPI: SSDT 0x0000000077331078 00549C (v02 SaSsdt SaSsdt   00003000 INTL 20120913)
[    0.009408] ACPI: UEFI 0x0000000077336518 000042 (v01                 00000000      00000000)
[    0.009411] ACPI: MSDM 0x0000000077336560 000055 (v03 DELL   QA09     01072009 AMI  00010013)
[    0.009414] ACPI: SSDT 0x00000000773365B8 000E58 (v02 CpuRef CpuSsdt  00003000 INTL 20120913)
[    0.009418] ACPI: SSDT 0x0000000077337410 0006FA (v02 SgRef  SgPch    00001000 INTL 20120913)
[    0.009421] ACPI: DMAR 0x0000000077337B10 0000CC (v01 INTEL  SKL      00000001 INTL 00000001)
[    0.009425] ACPI: TPM2 0x0000000077337BE0 000034 (v03        Tpm2Tabl 00000001 AMI  00000000)
[    0.009428] ACPI: SSDT 0x0000000077337C18 00197A (v01 OptRef OptTabl  00001000 INTL 20120913)
[    0.009436] ACPI: Local APIC address 0xfee00000
[    0.009576] No NUMA configuration found
[    0.009577] Faking a node at [mem 0x0000000000000000-0x0000000283ffffff]
[    0.009590] NODE_DATA(0) allocated [mem 0x283fd5000-0x283ffffff]
[    0.033250] Zone ranges:
[    0.033252]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.033254]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.033256]   Normal   [mem 0x0000000100000000-0x0000000283ffffff]
[    0.033258]   Device   empty
[    0.033260] Movable zone start for each node
[    0.033263] Early memory node ranges
[    0.033264]   node   0: [mem 0x0000000000001000-0x0000000000057fff]
[    0.033266]   node   0: [mem 0x0000000000059000-0x000000000009efff]
[    0.033268]   node   0: [mem 0x0000000000100000-0x0000000070e01fff]
[    0.033269]   node   0: [mem 0x0000000070e2d000-0x0000000070e7efff]
[    0.033270]   node   0: [mem 0x00000000713ce000-0x0000000075203fff]
[    0.033271]   node   0: [mem 0x0000000077ffe000-0x0000000077ffefff]
[    0.033272]   node   0: [mem 0x0000000100000000-0x0000000283ffffff]
[    0.033274] Initmem setup node 0 [mem 0x0000000000001000-0x0000000283ffffff]
[    0.033277] On node 0 totalpages: 2067496
[    0.033278]   DMA zone: 64 pages used for memmap
[    0.033279]   DMA zone: 26 pages reserved
[    0.033280]   DMA zone: 3997 pages, LIFO batch:0
[    0.033624]   DMA zone: 28771 pages in unavailable ranges
[    0.033626]   DMA32 zone: 7411 pages used for memmap
[    0.033627]   DMA32 zone: 474251 pages, LIFO batch:63
[    0.039074]   DMA32 zone: 13173 pages in unavailable ranges
[    0.039076]   Normal zone: 24832 pages used for memmap
[    0.039077]   Normal zone: 1589248 pages, LIFO batch:63
[    0.039635]   Normal zone: 16384 pages in unavailable ranges
[    0.039645] Reserving Intel graphics memory at [mem 0x79000000-0x7affffff]
[    0.039864] ACPI: PM-Timer IO Port: 0x1808
[    0.039866] ACPI: Local APIC address 0xfee00000
[    0.039872] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[    0.039874] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
[    0.039875] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
[    0.039877] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
[    0.039903] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-119
[    0.039906] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.039908] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.039910] ACPI: IRQ0 used by override.
[    0.039911] ACPI: IRQ9 used by override.
[    0.039913] Using ACPI (MADT) for SMP configuration information
[    0.039915] ACPI: HPET id: 0x8086a701 base: 0xfed00000
[    0.039919] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0xb2 (or later)
[    0.039920] smpboot: Allowing 4 CPUs, 0 hotplug CPUs
[    0.039939] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.039942] PM: hibernation: Registered nosave memory: [mem 0x00058000-0x00058fff]
[    0.039944] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[    0.039945] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[    0.039947] PM: hibernation: Registered nosave memory: [mem 0x70e02000-0x70e02fff]
[    0.039949] PM: hibernation: Registered nosave memory: [mem 0x70e03000-0x70e2cfff]
[    0.039951] PM: hibernation: Registered nosave memory: [mem 0x70e7f000-0x713cdfff]
[    0.039953] PM: hibernation: Registered nosave memory: [mem 0x75204000-0x77307fff]
[    0.039954] PM: hibernation: Registered nosave memory: [mem 0x77308000-0x77339fff]
[    0.039955] PM: hibernation: Registered nosave memory: [mem 0x7733a000-0x77b19fff]
[    0.039956] PM: hibernation: Registered nosave memory: [mem 0x77b1a000-0x77fa3fff]
[    0.039958] PM: hibernation: Registered nosave memory: [mem 0x77fa4000-0x77ffdfff]
[    0.039959] PM: hibernation: Registered nosave memory: [mem 0x77fff000-0x77ffffff]
[    0.039960] PM: hibernation: Registered nosave memory: [mem 0x78000000-0x780fffff]
[    0.039962] PM: hibernation: Registered nosave memory: [mem 0x78100000-0x78ffffff]
[    0.039963] PM: hibernation: Registered nosave memory: [mem 0x79000000-0x7affffff]
[    0.039964] PM: hibernation: Registered nosave memory: [mem 0x7b000000-0xdfffffff]
[    0.039965] PM: hibernation: Registered nosave memory: [mem 0xe0000000-0xefffffff]
[    0.039966] PM: hibernation: Registered nosave memory: [mem 0xf0000000-0xfdffffff]
[    0.039967] PM: hibernation: Registered nosave memory: [mem 0xfe000000-0xfe010fff]
[    0.039968] PM: hibernation: Registered nosave memory: [mem 0xfe011000-0xfebfffff]
[    0.039969] PM: hibernation: Registered nosave memory: [mem 0xfec00000-0xfec00fff]
[    0.039970] PM: hibernation: Registered nosave memory: [mem 0xfec01000-0xfedfffff]
[    0.039971] PM: hibernation: Registered nosave memory: [mem 0xfee00000-0xfee00fff]
[    0.039972] PM: hibernation: Registered nosave memory: [mem 0xfee01000-0xfeffffff]
[    0.039974] PM: hibernation: Registered nosave memory: [mem 0xff000000-0xffffffff]
[    0.039976] [mem 0x7b000000-0xdfffffff] available for PCI devices
[    0.039978] Booting paravirtualized kernel on bare hardware
[    0.039980] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370452778343963 ns
[    0.044039] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:4 nr_cpu_ids:4 nr_node_ids:1
[    0.044236] percpu: Embedded 56 pages/cpu s192512 r8192 d28672 u524288
[    0.044242] pcpu-alloc: s192512 r8192 d28672 u524288 alloc=1*2097152
[    0.044245] pcpu-alloc: [0] 0 1 2 3 
[    0.044270] Built 1 zonelists, mobility grouping on.  Total pages: 2035163
[    0.044272] Policy zone: Normal
[    0.044274] Kernel command line: BOOT_IMAGE=/vmlinuz-5.11.7-gentoo-x86_64 root=UUID=644a9e91-5e05-4f5d-a79b-e0eccd21a1a8 ro console=tty0 console=ttyS0,115200n8 pcie_port_pm=off
[    0.045009] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[    0.045384] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[    0.045432] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.060893] Memory: 1816216K/8269984K available (12295K kernel code, 3112K rwdata, 6648K rodata, 2460K init, 4916K bss, 409372K reserved, 0K cma-reserved)
[    0.060901] random: get_random_u64 called from __kmem_cache_create+0x2e/0x430 with crng_init=0
[    0.060994] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.061005] Kernel/User page tables isolation: enabled
[    0.061023] ftrace: allocating 39403 entries in 154 pages
[    0.073880] ftrace: allocated 154 pages with 4 groups
[    0.073970] rcu: Hierarchical RCU implementation.
[    0.073977] rcu: 	RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=4.
[    0.073983] 	Trampoline variant of Tasks RCU enabled.
[    0.073984] 	Rude variant of Tasks RCU enabled.
[    0.073985] 	Tracing variant of Tasks RCU enabled.
[    0.073986] rcu: RCU calculated value of scheduler-enlistment delay is 30 jiffies.
[    0.073987] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.077141] NR_IRQS: 524544, nr_irqs: 1024, preallocated irqs: 16
[    0.077453] random: crng done (trusting CPU's manufacturer)
[    0.077476] Console: colour dummy device 80x25
[    0.077713] printk: console [tty0] enabled
[    0.139675] printk: console [ttyS0] enabled
[    0.139914] ACPI: Core revision 20201113
[    0.140363] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635855245 ns
[    0.140915] APIC: Switch to symmetric I/O mode setup
[    0.141184] DMAR: Host address width 39
[    0.141394] DMAR: DRHD base: 0x000000fed90000 flags: 0x0
[    0.141685] DMAR: dmar0: reg_base_addr fed90000 ver 1:0 cap 1c0000c40660462 ecap 7e3ff0505e
[    0.142132] DMAR: DRHD base: 0x000000fed91000 flags: 0x1
[    0.142421] DMAR: dmar1: reg_base_addr fed91000 ver 1:0 cap d2008c40660462 ecap f050da
[    0.142844] DMAR: RMRR base: 0x000000770aa000 end: 0x000000770c9fff
[    0.143181] DMAR: RMRR base: 0x00000078800000 end: 0x0000007affffff
[    0.143518] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x0000000078800000-0x000000007affffff], contact BIOS vendor for fixes
[    0.144264] DMAR: [Firmware Bug]: Your BIOS is broken; bad RMRR [0x0000000078800000-0x000000007affffff]
               BIOS vendor: Dell Inc.; Ver: 1.0.8; Product Version: 1.0.8
[    0.145105] DMAR: ANDD device: 1 name: \_SB.PCI0.I2C0
[    0.145379] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed91000 IOMMU 1
[    0.145723] DMAR-IR: HPET id 0 under DRHD base 0xfed91000
[    0.146015] DMAR-IR: x2apic is disabled because BIOS sets x2apic opt out bit.
[    0.146015] DMAR-IR: Use 'intremap=no_x2apic_optout' to override the BIOS setting.
[    0.148581] DMAR-IR: Enabled IRQ remapping in xapic mode
[    0.148869] x2apic: IRQ remapping doesn't support X2APIC mode
[    0.153164] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.167554] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x22983777dd9, max_idle_ns: 440795300422 ns
[    0.168115] Calibrating delay loop (skipped), value calculated using timer frequency.. 4801.00 BogoMIPS (lpj=8000000)
[    0.168680] pid_max: default: 32768 minimum: 301
[    0.171467] LSM: Security Framework initializing
[    0.171729] Yama: becoming mindful.
[    0.171927] SELinux:  Initializing.
[    0.172159] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.172586] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    0.173260] mce: CPU0: Thermal monitoring enabled (TM1)
[    0.173556] process: using mwait in idle threads
[    0.173807] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[    0.174098] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
[    0.174423] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    0.174783] Spectre V2 : Mitigation: Full generic retpoline
[    0.175083] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[    0.175524] Speculative Store Bypass: Vulnerable
[    0.175776] SRBDS: Vulnerable: No microcode
[    0.176004] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[    0.176600] Freeing SMP alternatives memory: 32K
[    0.181519] smpboot: Estimated ratio of average max frequency by base frequency (times 1024): 1152
[    0.182013] smpboot: CPU0: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz (family: 0x6, model: 0x4e, stepping: 0x3)
[    0.182667] Performance Events: PEBS fmt3+, Skylake events, 32-deep LBR, full-width counters, Intel PMU driver.
[    0.183218] ... version:                4
[    0.183439] ... bit width:              48
[    0.183663] ... generic registers:      4
[    0.183884] ... value mask:             0000ffffffffffff
[    0.184173] ... max period:             00007fffffffffff
[    0.184462] ... fixed-purpose events:   3
[    0.184682] ... event mask:             000000070000000f
[    0.184781] rcu: Hierarchical SRCU implementation.
[    0.185315] NMI watchdog: Enabled. Permanently consumes one hw-PMU counter.
[    0.185736] smp: Bringing up secondary CPUs ...
[    0.186045] x86: Booting SMP configuration:
[    0.186275] .... node  #0, CPUs:      #1 #2
[    0.186628] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
[    0.188199]  #3
[    0.188547] smp: Brought up 1 node, 4 CPUs
[    0.188547] smpboot: Max logical packages: 1
[    0.188712] smpboot: Total of 4 processors activated (19207.00 BogoMIPS)
[    0.208923] node 0 deferred pages initialised in 20ms
[    0.209240] devtmpfs: initialized
[    0.209240] x86/mm: Memory block size: 128MB
[    0.209240] PM: Registering ACPI NVS region [mem 0x70e02000-0x70e02fff] (4096 bytes)
[    0.209240] PM: Registering ACPI NVS region [mem 0x7733a000-0x77b19fff] (8257536 bytes)
[    0.209240] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370867519511994 ns
[    0.209682] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.210114] pinctrl core: initialized pinctrl subsystem
[    0.210596] PM: RTC time: 07:18:16, date: 2021-06-22
[    0.210979] NET: Registered protocol family 16
[    0.211541] DMA: preallocated 1024 KiB GFP_KERNEL pool for atomic allocations
[    0.211931] DMA: preallocated 1024 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[    0.212357] DMA: preallocated 1024 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[    0.212796] audit: initializing netlink subsys (disabled)
[    0.214791] audit: type=2000 audit(1624346296.073:1): state=initialized audit_enabled=0 res=1
[    0.214861] thermal_sys: Registered thermal governor 'fair_share'
[    0.215266] thermal_sys: Registered thermal governor 'bang_bang'
[    0.215611] thermal_sys: Registered thermal governor 'step_wise'
[    0.215937] thermal_sys: Registered thermal governor 'user_space'
[    0.216272] cpuidle: using governor ladder
[    0.216272] cpuidle: using governor menu
[    0.216272] Simple Boot Flag at 0x47 set to 0x1
[    0.216272] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.216272] ACPI: bus type PCI registered
[    0.216272] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.216272] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.216606] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in E820
[    0.216986] PCI: Using configuration type 1 for base access
[    0.218183] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.219089] Kprobes globally optimized
[    0.221467] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[    0.221831] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[    0.348303] alg: No test for 842 (842-generic)
[    0.348368] alg: No test for 842 (842-scomp)
[    0.352028] fbcon: Taking over console
[    0.352028] ACPI: Added _OSI(Module Device)
[    0.352028] ACPI: Added _OSI(Processor Device)
[    0.352199] ACPI: Added _OSI(3.0 _SCP Extensions)
[    0.352483] ACPI: Added _OSI(Processor Aggregator Device)
[    0.352777] ACPI: Added _OSI(Linux-Dell-Video)
[    0.353020] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.353020] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[    0.390073] ACPI: 11 ACPI AML tables successfully acquired and loaded
[    0.393069] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    0.398339] ACPI: Dynamic OEM Table Load:
[    0.398567] ACPI: SSDT 0xFFFF96BA010A6800 00061E (v02 PmRef  Cpu0Ist  00003000 INTL 20120913)
[    0.400448] ACPI: \_PR_.CPU0: _OSC native thermal LVT Acked
[    0.402209] ACPI: Dynamic OEM Table Load:
[    0.402435] ACPI: SSDT 0xFFFF96BB7BDCB000 00037F (v02 PmRef  Cpu0Cst  00003001 INTL 20120913)
[    0.404929] ACPI: Dynamic OEM Table Load:
[    0.405156] ACPI: SSDT 0xFFFF96BA010A1000 0005AA (v02 PmRef  ApIst    00003000 INTL 20120913)
[    0.407315] ACPI: Dynamic OEM Table Load:
[    0.407540] ACPI: SSDT 0xFFFF96BA0102FA00 000119 (v02 PmRef  ApCst    00003000 INTL 20120913)
[    0.411534] ACPI: EC: EC started
[    0.411715] ACPI: EC: interrupt blocked
[    0.413506] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.413783] ACPI: \_SB_.PCI0.LPCB.EC__: Boot DSDT EC used to handle transactions
[    0.414182] ACPI: Interpreter enabled
[    0.414424] ACPI: (supports S0 S3 S4 S5)
[    0.414641] ACPI: Using IOAPIC for interrupt routing
[    0.414820] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    0.416003] ACPI: Enabled 7 GPEs in block 00 to 7F
[    0.419085] ACPI: Power Resource [PG00] (on)
[    0.419484] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.PEG0.PEGP.NHDA], AE_NOT_FOUND (20201113/psargs-330)
[    0.420081] ACPI Error: Aborting method \_SB.PCI0.PEG0.PG00._ON due to previous error (AE_NOT_FOUND) (20201113/psparse-529)
[    0.421007] ACPI: Power Resource [PG01] (on)
[    0.445692] ACPI: Power Resource [PG02] (on)
[    0.453314] ACPI: Power Resource [PC01] (on)
[    0.505279] ACPI: Power Resource [FN00] (off)
[    0.505730] ACPI: Power Resource [FN01] (off)
[    0.506181] ACPI: Power Resource [FN02] (off)
[    0.506623] ACPI: Power Resource [FN03] (off)
[    0.507065] ACPI: Power Resource [FN04] (off)
[    0.510530] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-fe])
[    0.510913] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]
[    0.511552] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[    0.513844] PCI host bridge to bus 0000:00
[    0.514094] pci_bus 0000:00: root bus resource [io  0x0000-0x0cf7 window]
[    0.514497] pci_bus 0000:00: root bus resource [io  0x0d00-0xffff window]
[    0.514784] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[    0.515222] pci_bus 0000:00: root bus resource [mem 0x7b000000-0xdfffffff window]
[    0.515664] pci_bus 0000:00: root bus resource [mem 0xfd000000-0xfe7fffff window]
[    0.516102] pci_bus 0000:00: root bus resource [bus 00-fe]
[    0.516460] pci 0000:00:00.0: [8086:1904] type 00 class 0x060000
[    0.517106] pci 0000:00:02.0: [8086:1916] type 00 class 0x030000
[    0.517477] pci 0000:00:02.0: reg 0x10: [mem 0xd4000000-0xd4ffffff 64bit]
[    0.517885] pci 0000:00:02.0: reg 0x18: [mem 0xb0000000-0xbfffffff 64bit pref]
[    0.518123] pci 0000:00:02.0: reg 0x20: [io  0xf000-0xf03f]
[    0.518485] pci 0000:00:02.0: BAR 2: assigned to efifb
[    0.519058] pci 0000:00:04.0: [8086:1903] type 00 class 0x118000
[    0.519412] pci 0000:00:04.0: reg 0x10: [mem 0xd5220000-0xd5227fff 64bit]
[    0.520149] pci 0000:00:14.0: [8086:9d2f] type 00 class 0x0c0330
[    0.520517] pci 0000:00:14.0: reg 0x10: [mem 0xd5210000-0xd521ffff 64bit]
[    0.520988] pci 0000:00:14.0: PME# supported from D3hot D3cold
[    0.521733] pci 0000:00:14.2: [8086:9d31] type 00 class 0x118000
[    0.522097] pci 0000:00:14.2: reg 0x10: [mem 0xd5237000-0xd5237fff 64bit]
[    0.522906] pci 0000:00:15.0: [8086:9d60] type 00 class 0x118000
[    0.523454] pci 0000:00:15.0: reg 0x10: [mem 0xd5236000-0xd5236fff 64bit]
[    0.525097] pci 0000:00:16.0: [8086:9d3a] type 00 class 0x078000
[    0.525454] pci 0000:00:16.0: reg 0x10: [mem 0xd5235000-0xd5235fff 64bit]
[    0.525917] pci 0000:00:16.0: PME# supported from D3hot
[    0.526441] pci 0000:00:17.0: [8086:9d03] type 00 class 0x010601
[    0.526790] pci 0000:00:17.0: reg 0x10: [mem 0xd5230000-0xd5231fff]
[    0.527145] pci 0000:00:17.0: reg 0x14: [mem 0xd5234000-0xd52340ff]
[    0.527501] pci 0000:00:17.0: reg 0x18: [io  0xf090-0xf097]
[    0.527818] pci 0000:00:17.0: reg 0x1c: [io  0xf080-0xf083]
[    0.528123] pci 0000:00:17.0: reg 0x20: [io  0xf060-0xf07f]
[    0.528441] pci 0000:00:17.0: reg 0x24: [mem 0xd5233000-0xd52337ff]
[    0.528849] pci 0000:00:17.0: PME# supported from D3hot
[    0.529340] pci 0000:00:1c.0: [8086:9d10] type 01 class 0x060400
[    0.529751] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.530339] pci 0000:00:1c.5: [8086:9d15] type 01 class 0x060400
[    0.530768] pci 0000:00:1c.5: PME# supported from D0 D3hot D3cold
[    0.531347] pci 0000:00:1d.0: [8086:9d18] type 01 class 0x060400
[    0.531530] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
[    0.532124] pci 0000:00:1f.0: [8086:9d48] type 00 class 0x060100
[    0.532741] pci 0000:00:1f.2: [8086:9d21] type 00 class 0x058000
[    0.533084] pci 0000:00:1f.2: reg 0x10: [mem 0xd522c000-0xd522ffff]
[    0.533655] pci 0000:00:1f.3: [8086:9d70] type 00 class 0x040300
[    0.534002] pci 0000:00:1f.3: reg 0x10: [mem 0xd5228000-0xd522bfff 64bit]
[    0.534395] pci 0000:00:1f.3: reg 0x20: [mem 0xd5200000-0xd520ffff 64bit]
[    0.534830] pci 0000:00:1f.3: PME# supported from D3hot D3cold
[    0.535378] pci 0000:00:1f.4: [8086:9d23] type 00 class 0x0c0500
[    0.535764] pci 0000:00:1f.4: reg 0x10: [mem 0xd5232000-0xd52320ff 64bit]
[    0.536201] pci 0000:00:1f.4: reg 0x20: [io  0xf040-0xf05f]
[    0.536785] pci 0000:01:00.0: [10de:1346] type 00 class 0x030200
[    0.537126] pci 0000:01:00.0: reg 0x10: [mem 0xd2000000-0xd2ffffff]
[    0.537478] pci 0000:01:00.0: reg 0x14: [mem 0xc0000000-0xcfffffff 64bit pref]
[    0.538122] pci 0000:01:00.0: reg 0x1c: [mem 0xd0000000-0xd1ffffff 64bit pref]
[    0.538521] pci 0000:01:00.0: reg 0x24: [io  0xe000-0xe07f]
[    0.538832] pci 0000:01:00.0: reg 0x30: [mem 0xd3000000-0xd307ffff pref]
[    0.539227] pci 0000:01:00.0: Enabling HDA controller
[    0.539714] pci 0000:00:1c.0: PCI bridge to [bus 01]
[    0.539989] pci 0000:00:1c.0:   bridge window [io  0xe000-0xefff]
[    0.540321] pci 0000:00:1c.0:   bridge window [mem 0xc0000000-0xd30fffff]
[    0.540939] pci 0000:02:00.0: [8086:3165] type 00 class 0x028000
[    0.541440] pci 0000:02:00.0: reg 0x10: [mem 0xd5100000-0xd5101fff 64bit]
[    0.541919] pci 0000:02:00.0: PME# supported from D0 D3hot D3cold
[    0.542919] pci 0000:00:1c.5: PCI bridge to [bus 02]
[    0.543196] pci 0000:00:1c.5:   bridge window [mem 0xd5100000-0xd51fffff]
[    0.543663] pci 0000:03:00.0: [10ec:8168] type 00 class 0x020000
[    0.544008] pci 0000:03:00.0: reg 0x10: [io  0xd000-0xd0ff]
[    0.544338] pci 0000:03:00.0: reg 0x18: [mem 0xd5004000-0xd5004fff 64bit]
[    0.544798] pci 0000:03:00.0: reg 0x20: [mem 0xd5000000-0xd5003fff 64bit]
[    0.545275] pci 0000:03:00.0: supports D1 D2
[    0.545514] pci 0000:03:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.546032] pci 0000:00:1d.0: PCI bridge to [bus 03]
[    0.546305] pci 0000:00:1d.0:   bridge window [io  0xd000-0xdfff]
[    0.546637] pci 0000:00:1d.0:   bridge window [mem 0xd5000000-0xd50fffff]
[    0.548933] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.549373] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 *10 11 12 14 15)
[    0.549809] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.550244] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.550678] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.551141] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.551510] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.551943] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 *11 12 14 15)
[    0.553072] ACPI: EC: interrupt unblocked
[    0.553294] ACPI: EC: event unblocked
[    0.554782] ACPI: EC: EC_CMD/EC_SC=0x66, EC_DATA=0x62
[    0.554782] ACPI: EC: GPE=0x46
[    0.555313] ACPI: \_SB_.PCI0.LPCB.EC__: Boot DSDT EC initialization complete
[    0.555313] ACPI: \_SB_.PCI0.LPCB.EC__: EC: Used to handle transactions and events
[    0.555677] iommu: Default domain type: Translated 
[    0.558128] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[    0.558445] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[    0.558907] pci 0000:00:02.0: vgaarb: bridge control possible
[    0.559219] vgaarb: loaded
[    0.559437] SCSI subsystem initialized
[    0.559649] libata version 3.00 loaded.
[    0.559649] ACPI: bus type USB registered
[    0.559649] usbcore: registered new interface driver usbfs
[    0.559649] usbcore: registered new interface driver hub
[    0.559649] usbcore: registered new device driver usb
[    0.559649] pps_core: LinuxPPS API ver. 1 registered
[    0.559649] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.559649] PTP clock support registered
[    0.559686] EDAC MC: Ver: 3.0.0
[    0.561468] Registered efivars operations
[    0.561733] NetLabel: Initializing
[    0.561760] NetLabel:  domain hash size = 128
[    0.562002] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    0.562321] NetLabel:  unlabeled traffic allowed by default
[    0.562624] PCI: Using ACPI for IRQ routing
[    0.589859] PCI: pci_cache_line_size set to 64 bytes
[    0.590208] e820: reserve RAM buffer [mem 0x00058000-0x0005ffff]
[    0.590209] e820: reserve RAM buffer [mem 0x0009f000-0x0009ffff]
[    0.590210] e820: reserve RAM buffer [mem 0x70e02000-0x73ffffff]
[    0.590212] e820: reserve RAM buffer [mem 0x70e7f000-0x73ffffff]
[    0.590213] e820: reserve RAM buffer [mem 0x75204000-0x77ffffff]
[    0.590214] e820: reserve RAM buffer [mem 0x77fff000-0x77ffffff]
[    0.591492] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
[    0.591834] hpet0: 8 comparators, 64-bit 24.000000 MHz counter
[    0.594781] clocksource: Switched to clocksource tsc-early
[    0.603326] VFS: Disk quotas dquot_6.6.0
[    0.603556] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.603972] pnp: PnP ACPI init
[    0.604415] system 00:00: [io  0x0680-0x069f] has been reserved
[    0.604739] system 00:00: [io  0xffff] has been reserved
[    0.605029] system 00:00: [io  0xffff] has been reserved
[    0.605319] system 00:00: [io  0xffff] has been reserved
[    0.605608] system 00:00: [io  0x1800-0x18fe] has been reserved
[    0.605930] system 00:00: [io  0x164e-0x164f] has been reserved
[    0.606265] system 00:00: [io  0x0380-0x0387] has been reserved
[    0.606593] system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.606698] pnp 00:01: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.606737] system 00:02: [io  0x1854-0x1857] has been reserved
[    0.607061] system 00:02: Plug and Play ACPI device, IDs INT3f0d PNP0c02 (active)
[    0.607424] system 00:03: [mem 0xfed10000-0xfed17fff] has been reserved
[    0.607787] system 00:03: [mem 0xfed18000-0xfed18fff] has been reserved
[    0.608146] system 00:03: [mem 0xfed19000-0xfed19fff] has been reserved
[    0.608503] system 00:03: [mem 0xe0000000-0xefffffff] has been reserved
[    0.608862] system 00:03: [mem 0xfed20000-0xfed3ffff] has been reserved
[    0.609220] system 00:03: [mem 0xfed90000-0xfed93fff] could not be reserved
[    0.609596] system 00:03: [mem 0xfed45000-0xfed8ffff] has been reserved
[    0.609956] system 00:03: [mem 0xff000000-0xffffffff] has been reserved
[    0.610314] system 00:03: [mem 0xfee00000-0xfeefffff] could not be reserved
[    0.610691] system 00:03: [mem 0xdffe0000-0xdfffffff] has been reserved
[    0.611051] system 00:03: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.611098] system 00:04: [mem 0xfd000000-0xfdabffff] has been reserved
[    0.611457] system 00:04: [mem 0xfdad0000-0xfdadffff] has been reserved
[    0.611815] system 00:04: [mem 0xfdb00000-0xfdffffff] has been reserved
[    0.612173] system 00:04: [mem 0xfe000000-0xfe01ffff] could not be reserved
[    0.612550] system 00:04: [mem 0xfe036000-0xfe03bfff] has been reserved
[    0.612911] system 00:04: [mem 0xfe03d000-0xfe3fffff] has been reserved
[    0.613271] system 00:04: [mem 0xfe410000-0xfe7fffff] has been reserved
[    0.613631] system 00:04: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.613957] system 00:05: [io  0xff00-0xfffe] has been reserved
[    0.614281] system 00:05: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.615439] system 00:06: [mem 0xfe029000-0xfe029fff] has been reserved
[    0.615799] system 00:06: [mem 0xfe028000-0xfe028fff] has been reserved
[    0.616159] system 00:06: Plug and Play ACPI device, IDs PNP0c02 (active)
[    0.616650] pnp 00:07: Plug and Play ACPI device, IDs DLL070b PNP0f13 (active)
[    0.616673] pnp 00:08: Plug and Play ACPI device, IDs PNP0303 (active)
[    0.617024] pnp: PnP ACPI: found 9 devices
[    0.622854] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[    0.623379] NET: Registered protocol family 2
[    0.623744] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear)
[    0.624216] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear)
[    0.624720] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear)
[    0.625287] TCP: Hash tables configured (established 65536 bind 65536)
[    0.625677] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.626069] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear)
[    0.626523] NET: Registered protocol family 1
[    0.626775] NET: Registered protocol family 44
[    0.627035] pci 0000:00:1c.0: PCI bridge to [bus 01]
[    0.627309] pci 0000:00:1c.0:   bridge window [io  0xe000-0xefff]
[    0.627645] pci 0000:00:1c.0:   bridge window [mem 0xc0000000-0xd30fffff]
[    0.628020] pci 0000:00:1c.5: PCI bridge to [bus 02]
[    0.628295] pci 0000:00:1c.5:   bridge window [mem 0xd5100000-0xd51fffff]
[    0.628670] pci 0000:00:1d.0: PCI bridge to [bus 03]
[    0.628942] pci 0000:00:1d.0:   bridge window [io  0xd000-0xdfff]
[    0.629274] pci 0000:00:1d.0:   bridge window [mem 0xd5000000-0xd50fffff]
[    0.629646] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7 window]
[    0.629984] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff window]
[    0.630318] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[    0.630690] pci_bus 0000:00: resource 7 [mem 0x7b000000-0xdfffffff window]
[    0.631063] pci_bus 0000:00: resource 8 [mem 0xfd000000-0xfe7fffff window]
[    0.631434] pci_bus 0000:01: resource 0 [io  0xe000-0xefff]
[    0.631738] pci_bus 0000:01: resource 1 [mem 0xc0000000-0xd30fffff]
[    0.632077] pci_bus 0000:02: resource 1 [mem 0xd5100000-0xd51fffff]
[    0.632417] pci_bus 0000:03: resource 0 [io  0xd000-0xdfff]
[    0.632720] pci_bus 0000:03: resource 1 [mem 0xd5000000-0xd50fffff]
[    0.633201] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[    0.634673] PCI: CLS 0 bytes, default 64
[    0.634919] Trying to unpack rootfs image as initramfs...
[    2.259663] Freeing initrd memory: 104540K
[    2.260027] DMAR: ACPI device "device:69" under DMAR at fed91000 as 00:15.0
[    2.260420] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    2.260768] software IO TLB: mapped [mem 0x000000006bcf9000-0x000000006fcf9000] (64MB)
[    2.261609] Initialise system trusted keyrings
[    2.261862] Key type blacklist registered
[    2.262126] workingset: timestamp_bits=36 max_order=21 bucket_order=0
[    2.263615] zbud: loaded
[    2.263973] integrity: Platform Keyring initialized
[    2.272836] Key type asymmetric registered
[    2.273062] Asymmetric key parser 'x509' registered
[    2.273334] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247)
[    2.273757] io scheduler mq-deadline registered
[    2.274006] io scheduler kyber registered
[    2.274244] io scheduler bfq registered
[    2.274509] atomic64_test: passed for x86-64 platform with CX8 and with SSE
[    2.275525] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[    2.275908] efifb: probing for efifb
[    2.276117] efifb: No BGRT, not showing boot graphics
[    2.276392] efifb: framebuffer at 0xb0000000, using 4160k, total 4160k
[    2.276746] efifb: mode is 1366x768x32, linelength=5504, pages=1
[    2.277073] efifb: scrolling: redraw
[    2.277271] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[    2.277654] Console: switching to colour frame buffer device 170x48
[    2.279818] fb0: EFI VGA frame buffer device
[    2.280070] intel_idle: MWAIT substates: 0x11142120
[    2.280071] intel_idle: v0.5.1 model 0x4E
[    2.280309] intel_idle: Local APIC timer is reliable in all C-states
[    2.280473] ACPI: AC Adapter [ADP1] (on-line)
[    2.280794] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input0
[    2.281277] ACPI: Sleep Button [SLPB]
[    2.281599] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
[    2.282081] ACPI: Power Button [PWRB]
[    2.282316] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input2
[    2.282804] ACPI: Lid Switch [LID0]
[    2.283034] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
[    2.283467] ACPI: Power Button [PWRF]
[    2.284523] thermal LNXTHERM:00: registered as thermal_zone0
[    2.284887] ACPI: Thermal Zone [TZ00] (28 C)
[    2.285298] thermal LNXTHERM:01: registered as thermal_zone1
[    2.285621] ACPI: Thermal Zone [TZ01] (30 C)
[    2.286061] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    2.291588] Linux agpgart interface v0.103
[    2.292422] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80
[    2.293556] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80
[    2.295846] battery: ACPI: Battery Slot [BAT0] (battery present)
[    2.304597] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.304988] ehci-pci: EHCI PCI platform driver
[    2.305331] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    2.307538] serio: i8042 KBD port at 0x60,0x64 irq 1
[    2.308521] serio: i8042 AUX port at 0x60,0x64 irq 12
[    2.309556] mousedev: PS/2 mouse device common for all mice
[    2.310649] rtc_cmos 00:01: RTC can wake from S4
[    2.312297] rtc_cmos 00:01: registered as rtc0
[    2.313379] rtc_cmos 00:01: setting system clock to 2021-06-22T07:18:18 UTC (1624346298)
[    2.314486] rtc_cmos 00:01: alarms up to one month, y3k, 242 bytes nvram, hpet irqs
[    2.315606] intel_pstate: Intel P-state driver initializing
[    2.316885] intel_pstate: HWP enabled
[    2.317993] hid: raw HID events driver (C) Jiri Kosina
[    2.319017] usbcore: registered new interface driver usbhid
[    2.319996] usbhid: USB HID core driver
[    2.320616] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4
[    2.321154] intel_pmc_core INT33A1:00:  initialized
[    2.323875] drop_monitor: Initializing network drop monitor service
[    2.325005] Initializing XFRM netlink socket
[    2.325898] NET: Registered protocol family 17
[    2.327503] microcode: sig=0x406e3, pf=0x80, revision=0x8a
[    2.328852] microcode: Microcode Update Driver: v2.2.
[    2.328855] IPI shorthand broadcast: enabled
[    2.330685] sched_clock: Marking stable (2264818785, 64029605)->(2337965119, -9116729)
[    2.332033] registered taskstats version 1
[    2.332932] Loading compiled-in X.509 certificates
[    2.363677] Loaded X.509 cert 'Build time autogenerated kernel key: 48d5a03f570d6a6801799db90fd3bdecc59207c5'
[    2.364980] zswap: loaded using pool lzo/zbud
[    2.366047] debug_vm_pgtable: [debug_vm_pgtable         ]: Validating architecture page table helpers
[    2.367425] Key type ._fscrypt registered
[    2.368376] Key type .fscrypt registered
[    2.369365] Key type fscrypt-provisioning registered
[    2.372499] Key type encrypted registered
[    2.373988] integrity: Loading X.509 certificate: UEFI:db
[    2.375045] integrity: Loaded X.509 cert 'Microsoft Corporation UEFI CA 2011: 13adbf4309bd82709c8cd54f316ed522988a1bd4'
[    2.376296] integrity: Loading X.509 certificate: UEFI:db
[    2.377265] integrity: Loaded X.509 cert 'Microsoft Windows Production PCA 2011: a92902398e16c49778cd90f99e4f9ae17c55af53'
[    2.379092] ima: Allocated hash algorithm: sha256
[    2.404075] ima: No architecture policies found
[    2.406186] PM:   Magic number: 9:664:319
[    2.407179] tty tty44: hash matches
[    2.408220] RAS: Correctable Errors collector initialized.
[    2.410194] Freeing unused decrypted memory: 2036K
[    2.411622] Freeing unused kernel image (initmem) memory: 2460K
[    2.431643] Write protecting the kernel read-only data: 22528k
[    2.433742] Freeing unused kernel image (text/rodata gap) memory: 2040K
[    2.435699] Freeing unused kernel image (rodata/data gap) memory: 1544K
[    2.498466] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[    2.499451] rodata_test: all tests were successful
[    2.500336] x86/mm: Checking user space page tables
[    2.550917] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[    2.551890] Run /init as init process
[    2.552709]   with arguments:
[    2.552710]     /init
[    2.552711]   with environment:
[    2.552712]     HOME=/
[    2.552713]     TERM=linux
[    2.552714]     BOOT_IMAGE=/vmlinuz-5.11.7-gentoo-x86_64
[    2.557258] systemd[1]: Inserted module 'autofs4'
[    2.573583] NET: Registered protocol family 10
[    2.576732] Segment Routing with IPv6
[    2.645913] systemd[1]: systemd 243 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK -SYSVINIT +UTMP -LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL -XZ +LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
[    2.665129] systemd[1]: Detected architecture x86-64.
[    2.667281] systemd[1]: Running in initial RAM disk.
[    2.669683] systemd[1]: No hostname configured.
[    2.671834] systemd[1]: Set hostname to <localhost>.
[    2.673979] systemd[1]: Initializing machine ID from random generator.
[    2.684768] zfs-generator: starting
[    2.688909] zfs-generator: loading Dracut library from /lib/dracut-lib.sh
[    2.741680] systemd[1]: Reached target Slices.
[    2.742670] systemd[1]: Reached target Swap.
[    2.743568] systemd[1]: Reached target Timers.
[    2.744574] systemd[1]: Listening on Journal Audit Socket.
[    2.754741] Asymmetric key parser 'pkcs8' registered
[    2.791718] systemd[200]: dracut-cmdline-ask.service: Failed to set up standard input: Inappropriate ioctl for device
[    2.929904] device-mapper: uevent: version 1.0.3
[    2.930896] device-mapper: ioctl: 4.43.0-ioctl (2020-10-01) initialised: dm-devel@redhat.com
[    2.962543] RPC: Registered named UNIX socket transport module.
[    2.963520] RPC: Registered udp transport module.
[    2.964433] RPC: Registered tcp transport module.
[    2.965409] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    3.017597] raid6: skip pq benchmark and using algorithm avx2x4
[    3.018619] raid6: using avx2x2 recovery algorithm
[    3.020398] xor: automatically using best checksumming function   avx       
[    3.063838] Btrfs loaded, crc32c=crc32c-intel, zoned=yes
[    3.172214] psmouse serio1: synaptics: queried max coordinates: x [..5664], y [..4704]
[    3.205518] psmouse serio1: synaptics: queried min coordinates: x [1276..], y [1148..]
[    3.206630] psmouse serio1: synaptics: The touchpad can support a better bus than the too old PS/2 protocol. Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.
[    3.235874] wmi_bus wmi_bus-PNP0C14:01: WQBC data block query control method not found
[    3.265844] ahci 0000:00:17.0: version 3.0
[    3.266097] ahci 0000:00:17.0: AHCI 0001.0301 32 slots 2 ports 6 Gbps 0x3 impl SATA mode
[    3.267236] ahci 0000:00:17.0: flags: 64bit ncq pm led clo only pio slum part deso sadm sds apst 
[    3.272133] scsi host0: ahci
[    3.273822] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    3.274568] psmouse serio1: synaptics: Touchpad model: 1, fw: 8.2, id: 0x1e2a1, caps: 0xf00823/0x840300/0x12e800/0x0, board id: 3017, fw id: 1988148
[    3.275450] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
[    3.280580] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x0000000081109810
[    3.282548] scsi host1: ahci
[    3.283145] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.11
[    3.284151] ata1: SATA max UDMA/133 abar m2048@0xd5233000 port 0xd5233100 irq 125
[    3.284801] tsc: Refined TSC clocksource calibration: 2399.999 MHz
[    3.284805] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2298364cab5, max_idle_ns: 440795214892 ns
[    3.285578] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.286997] ata2: SATA max UDMA/133 abar m2048@0xd5233000 port 0xd5233180 irq 125
[    3.288302] usb usb1: Product: xHCI Host Controller
[    3.293938] usb usb1: Manufacturer: Linux 5.11.7-gentoo-x86_64 xhci-hcd
[    3.295316] usb usb1: SerialNumber: 0000:00:14.0
[    3.296610] clocksource: Switched to clocksource tsc
[    3.296755] hub 1-0:1.0: USB hub found
[    3.299577] hub 1-0:1.0: 12 ports detected
[    3.302703] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    3.304213] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[    3.305658] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed
[    3.307168] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.11
[    3.308726] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.310291] usb usb2: Product: xHCI Host Controller
[    3.311708] usb usb2: Manufacturer: Linux 5.11.7-gentoo-x86_64 xhci-hcd
[    3.313259] usb usb2: SerialNumber: 0000:00:14.0
[    3.314815] hub 2-0:1.0: USB hub found
[    3.316454] hub 2-0:1.0: 6 ports detected
[    3.328792] cryptd: max_cpu_qlen set to 1000
[    3.334223] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[    3.337075] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input6
[    3.338651] AVX2 version of gcm_enc/dec engaged.
[    3.340284] AES CTR mode by8 optimization enabled
[    3.360753] libphy: r8169: probed
[    3.363365] r8169 0000:03:00.0 eth0: RTL8168gu/8111gu, f4:8e:38:f1:5f:5c, XID 509, IRQ 127
[    3.365192] r8169 0000:03:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
[    3.379315] r8169 0000:03:00.0: invalid short VPD tag 00 at offset 1
[    3.390778] r8169 0000:03:00.0 p12p1: renamed from eth0
[    3.495699] MXM: GUID detected in BIOS
[    3.496727] ACPI Warning: \_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20201113/nsarguments-61)
[    3.498400] ACPI Warning: \_SB.PCI0.RP01.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20201113/nsarguments-61)
[    3.500240] pci 0000:01:00.0: optimus capabilities: enabled, status dynamic power, hda bios codec supported
[    3.501584] VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.RP01.PEGP handle
[    3.502818] nouveau 0000:01:00.0: enabling device (0006 -> 0007)
[    3.504060] checking generic (b0000000 410000) vs hw (d2000000 1000000)
[    3.504062] checking generic (b0000000 410000) vs hw (c0000000 10000000)
[    3.504063] checking generic (b0000000 410000) vs hw (d0000000 2000000)
[    3.504112] nouveau 0000:01:00.0: NVIDIA GM108 (118060a2)
[    3.524264] nouveau 0000:01:00.0: bios: version 82.08.6f.00.05
[    3.531674] checking generic (b0000000 410000) vs hw (d4000000 1000000)
[    3.531677] checking generic (b0000000 410000) vs hw (b0000000 10000000)
[    3.531678] fb0: switching to inteldrmfb from EFI VGA
[    3.532879] Console: switching to colour dummy device 80x25
[    3.533217] i915 0000:00:02.0: vgaarb: deactivate vga console
[    3.584943] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    3.586531] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)
[    3.591862] i915 0000:00:02.0: [drm] Panel advertises DPCD backlight support, but VBT disagrees. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=1. If your machine needs this, please file a _new_ bug report on drm/i915, see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.
[    3.610106] nouveau 0000:01:00.0: fb: 2048 MiB DDR3
[    3.610486] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 6013d4 [ IBUS ]
[    3.611384] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[    3.611760] ata2: SATA link down (SStatus 4 SControl 300)
[    3.638536] ata1.00: ATA-8: ST500LT012-1DG142, 0002SDM1, max UDMA/133
[    3.639169] ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 32)
[    3.668124] usb 1-5: new full-speed USB device number 2 using xhci_hcd
[    3.678744] ata1.00: configured for UDMA/133
[    3.688322] scsi 0:0:0:0: Direct-Access     ATA      ST500LT012-1DG14 SDM1 PQ: 0 ANSI: 5
[    3.693803] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/466 GiB)
[    3.694536] sd 0:0:0:0: [sda] 4096-byte physical blocks
[    3.695051] sd 0:0:0:0: [sda] Write Protect is off
[    3.695524] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    3.695542] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    3.780900]  sda: sda1 sda2
[    3.781576] sd 0:0:0:0: [sda] Attached SCSI disk
[    3.810325] usb 1-5: New USB device found, idVendor=138a, idProduct=0011, bcdDevice= 0.78
[    3.811119] usb 1-5: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[    3.811854] usb 1-5: SerialNumber: b710c460ac16
[    3.934798] usb 1-6: new full-speed USB device number 3 using xhci_hcd
[    4.045298] BTRFS: device fsid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8 devid 1 transid 942644 /dev/sda2 scanned by systemd-udevd (432)
[    4.075727] usb 1-6: New USB device found, idVendor=8087, idProduct=0a2a, bcdDevice= 0.01
[    4.076533] usb 1-6: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.201456] usb 1-7: new high-speed USB device number 4 using xhci_hcd
[    4.411042] usb 1-7: New USB device found, idVendor=0c45, idProduct=6712, bcdDevice=55.04
[    4.411845] usb 1-7: New USB device strings: Mfr=2, Product=1, SerialNumber=0
[    4.412587] usb 1-7: Product: Integrated_Webcam_HD
[    4.413064] usb 1-7: Manufacturer: CN0V359T724876BRE1PXA00
[    4.690536] [TTM] Zone  kernel: Available graphics memory: 4015338 KiB
[    4.690975] [TTM] Zone   dma32: Available graphics memory: 2097152 KiB
[    4.691346] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
[    4.691648] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    4.691975] nouveau 0000:01:00.0: DRM: Pointer to TMDS table not found
[    4.692347] nouveau 0000:01:00.0: DRM: DCB version 4.0
[    4.693309] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[    4.694089] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 0
[    4.708525] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 1
[    4.710706] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    4.711426] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input7
[    4.712196] ACPI: Video Device [PEGP] (multi-head: no  rom: yes  post: no)
[    4.712601] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:23/LNXVIDEO:01/input/input8
[    4.713415] vga_switcheroo: enabled
[    4.717808] fbcon: i915drmfb (fb0) is primary device
[    4.724482] Console: switching to colour frame buffer device 170x48
[    4.743840] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
[    4.857022] BTRFS info (device sda2): disk space caching is enabled
[    4.857406] BTRFS info (device sda2): has skinny extents
[   10.816944] ACPI: \_SB_.PCI0.RP01.PEGP: failed to evaluate _DSM
[   11.657280] zfs-generator: starting
[   11.658401] zfs-generator: loading Dracut library from /lib/dracut-lib.sh
[   13.243134] systemd-journald[190]: Received SIGTERM from PID 1 (systemd).
[   13.597779] printk: systemd: 19 output lines suppressed due to ratelimiting
[   16.080886] systemd[1]: systemd 243 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK -SYSVINIT +UTMP -LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL -XZ +LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
[   16.098621] systemd[1]: Detected architecture x86-64.
[   16.190882] systemd[1]: Set hostname to <WindowsOSX>.
[   21.969833] systemd[1]: initrd-switch-root.service: Succeeded.
[   21.970560] systemd[1]: Stopped Switch Root.
[   21.971078] systemd[1]: systemd-journald.service: Service has no hold-off time (RestartSec=0), scheduling restart.
[   21.971960] systemd[1]: systemd-journald.service: Scheduled restart job, restart counter is at 1.
[   21.972875] systemd[1]: Created slice system-getty.slice.
[   21.973565] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[   21.974302] systemd[1]: Created slice system-wpa_supplicant\x2dnl80211.slice.
[   21.975101] systemd[1]: Created slice User and Session Slice.
[   21.975515] systemd[1]: Condition check resulted in Dispatch Password Requests to Console Directory Watch being skipped.
[   21.976247] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[   22.348305] BTRFS info (device sda2): enabling auto defrag
[   22.352738] BTRFS info (device sda2): disk space caching is enabled
[   23.177235] systemd-journald[684]: Received client request to flush runtime journal.
[   24.633368] nvidia: loading out-of-tree module taints kernel.
[   24.637814] nvidia: module license 'NVIDIA' taints kernel.
[   24.642116] Disabling lock debugging due to kernel taint
[   24.669691] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[   24.690493] nvidia-nvlink: Nvlink Core is being initialized, major device number 240
[   24.691813] NVRM: The NVIDIA probe routine was not called for 1 device(s).
[   24.693426] NVRM: This can occur when a driver such as: 
               NVRM: nouveau, rivafb, nvidiafb or rivatv 
               NVRM: was loaded and obtained ownership of the NVIDIA device(s).
[   24.696839] NVRM: Try unloading the conflicting kernel module (and/or
               NVRM: reconfigure your kernel without the conflicting
               NVRM: driver(s)), then try loading the NVIDIA kernel module
               NVRM: again.
[   24.701193] NVRM: No NVIDIA devices probed.
[   24.702390] nvidia-nvlink: Unregistered the Nvlink Core, major device number 240
[   34.932110] input: DELL Wireless hotkeys as /devices/virtual/input/input9
[   34.999007] proc_thermal 0000:00:04.0: enabling device (0000 -> 0002)
[   35.000537] proc_thermal 0000:00:04.0: Creating sysfs group for PROC_THERMAL_PCI
[   35.001848] intel_rapl_common: Found RAPL domain package
[   35.002917] intel_rapl_common: Found RAPL domain dram
[   35.083883] mei_me 0000:00:16.0: enabling device (0000 -> 0002)
[   35.142543] i801_smbus 0000:00:1f.4: SPD Write Disable is set
[   35.144334] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[   35.156271] i2c i2c-7: 1/4 memory slots populated (from DMI)
[   35.157719] i2c i2c-7: Successfully instantiated SPD at 0x50
[   35.164818] intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
[   35.166512] idma64 idma64.0: Found Intel integrated DMA 64-bit
[   35.351892] nvidia-nvlink: Nvlink Core is being initialized, major device number 239
[   35.353193] NVRM: The NVIDIA probe routine was not called for 1 device(s).
[   35.355285] NVRM: This can occur when a driver such as: 
               NVRM: nouveau, rivafb, nvidiafb or rivatv 
               NVRM: was loaded and obtained ownership of the NVIDIA device(s).
[   35.360230] NVRM: Try unloading the conflicting kernel module (and/or
               NVRM: reconfigure your kernel without the conflicting
               NVRM: driver(s)), then try loading the NVIDIA kernel module
               NVRM: again.
[   35.366688] NVRM: No NVIDIA devices probed.
[   35.368446] nvidia-nvlink: Unregistered the Nvlink Core, major device number 239
[   35.496734] nvidia-nvlink: Nvlink Core is being initialized, major device number 239
[   35.497889] NVRM: The NVIDIA probe routine was not called for 1 device(s).
[   35.499499] NVRM: This can occur when a driver such as: 
               NVRM: nouveau, rivafb, nvidiafb or rivatv 
               NVRM: was loaded and obtained ownership of the NVIDIA device(s).
[   35.503328] NVRM: Try unloading the conflicting kernel module (and/or
               NVRM: reconfigure your kernel without the conflicting
               NVRM: driver(s)), then try loading the NVIDIA kernel module
               NVRM: again.
[   35.507740] NVRM: No NVIDIA devices probed.
[   35.508810] nvidia-nvlink: Unregistered the Nvlink Core, major device number 239
[   35.582135] input: PC Speaker as /devices/platform/pcspkr/input/input10
[   35.601544] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   35.603603] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   35.622646] pstore: Using crash dump compression: lzo
[   35.623708] pstore: crypto_comp_decompress failed, ret = -22!
[   35.624768] pstore: crypto_comp_decompress failed, ret = -22!
[   35.626539] pstore: crypto_comp_decompress failed, ret = -22!
[   35.627668] pstore: crypto_comp_decompress failed, ret = -22!
[   35.628840] pstore: crypto_comp_decompress failed, ret = -22!
[   35.629889] pstore: crypto_comp_decompress failed, ret = -22!
[   35.631964] pstore: crypto_comp_decompress failed, ret = -22!
[   35.632964] pstore: crypto_comp_decompress failed, ret = -22!
[   35.633944] pstore: crypto_comp_decompress failed, ret = -22!
[   35.635106] pstore: crypto_comp_decompress failed, ret = -22!
[   35.636447] pstore: crypto_comp_decompress failed, ret = -22!
[   35.637382] pstore: crypto_comp_decompress failed, ret = -22!
[   35.638349] pstore: crypto_comp_decompress failed, ret = -22!
[   35.639409] pstore: crypto_comp_decompress failed, ret = -22!
[   35.640443] pstore: crypto_comp_decompress failed, ret = -22!
[   35.641366] pstore: crypto_comp_decompress failed, ret = -22!
[   35.648651] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.4)
[   35.674139] pstore: crypto_comp_decompress failed, ret = -22!
[   35.675541] pstore: Registered efi as persistent store backend
[   35.818354] intel_rapl_common: Found RAPL domain package
[   35.819288] intel_rapl_common: Found RAPL domain core
[   35.820072] intel_rapl_common: Found RAPL domain uncore
[   35.820896] intel_rapl_common: Found RAPL domain dram
[   35.821679] intel_rapl_common: Found RAPL domain psys
[   35.868409] at24 7-0050: supply vcc not found, using dummy regulator
[   35.871123] at24 7-0050: 256 byte spd EEPROM, read-only
[   35.878740] iTCO_vendor_support: vendor-support=0
[   35.917139] iTCO_wdt iTCO_wdt: Found a Intel PCH TCO device (Version=4, TCOBASE=0x0400)
[   35.918251] iTCO_wdt iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[   35.924549] dell-smbios A80593CE-A997-11DA-B012-B622A1EF5492: WMI SMBIOS userspace interface not supported(0), try upgrading to a newer BIOS
[   35.959841] input: Dell WMI hotkeys as /devices/platform/PNP0C14:01/wmi_bus/wmi_bus-PNP0C14:01/9DBB5994-A997-11DA-B012-B622A1EF5492/input/input11
[   35.997922] i2c_hid i2c-SYNA2393:00: supply vdd not found, using dummy regulator
[   35.999316] i2c_hid i2c-SYNA2393:00: supply vddl not found, using dummy regulator
[   36.154869] input: SYNA2393:00 06CB:75E2 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-8/i2c-SYNA2393:00/0018:06CB:75E2.0001/input/input12
[   36.159258] input: SYNA2393:00 06CB:75E2 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-8/i2c-SYNA2393:00/0018:06CB:75E2.0001/input/input13
[   36.163687] hid-generic 0018:06CB:75E2.0001: input,hidraw0: I2C HID v1.00 Mouse [SYNA2393:00 06CB:75E2] on i2c-SYNA2393:00
[   36.313248] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[   36.314886] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[   36.341677] Intel(R) Wireless WiFi driver for Linux
[   36.343163] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[   36.387161] RAPL PMU: API unit is 2^-32 Joules, 5 fixed counters, 655360 ms ovfl timer
[   36.388692] RAPL PMU: hw unit of domain pp0-core 2^-14 Joules
[   36.390033] RAPL PMU: hw unit of domain package 2^-14 Joules
[   36.391350] RAPL PMU: hw unit of domain dram 2^-14 Joules
[   36.392688] RAPL PMU: hw unit of domain pp1-gpu 2^-14 Joules
[   36.394000] RAPL PMU: hw unit of domain psys 2^-14 Joules
[   36.416870] snd_hda_codec_conexant hdaudioC0D0: CX20722: BIOS auto-probing.
[   36.418183] snd_hda_codec_conexant hdaudioC0D0: autoconfig for CX20722: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:speaker
[   36.419382] snd_hda_codec_conexant hdaudioC0D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[   36.420471] snd_hda_codec_conexant hdaudioC0D0:    hp_outs=1 (0x16/0x0/0x0/0x0/0x0)
[   36.421514] snd_hda_codec_conexant hdaudioC0D0:    mono: mono_out=0x0
[   36.422584] snd_hda_codec_conexant hdaudioC0D0:    inputs:
[   36.423506] snd_hda_codec_conexant hdaudioC0D0:      Internal Mic=0x1a
[   36.424489] snd_hda_codec_conexant hdaudioC0D0:      Mic=0x19
[   36.492808] input: SYNA2393:00 06CB:75E2 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-8/i2c-SYNA2393:00/0018:06CB:75E2.0001/input/input17
[   36.494959] input: SYNA2393:00 06CB:75E2 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-8/i2c-SYNA2393:00/0018:06CB:75E2.0001/input/input18
[   36.497043] hid-multitouch 0018:06CB:75E2.0001: input,hidraw0: I2C HID v1.00 Mouse [SYNA2393:00 06CB:75E2] on i2c-SYNA2393:00
[   37.306342] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15
[   37.307906] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
[   37.309226] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20
[   37.310535] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input21
[   37.312161] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
[   37.314034] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
[   37.315894] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
[   37.399817] iwlwifi 0000:02:00.0: loaded firmware version 29.198743027.0 7265D-29.ucode op_mode iwlmvm
[   38.033149] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 3165, REV=0x210
[   38.054582] iwlwifi 0000:02:00.0: base HW address: 3c:f8:62:c7:15:aa
[   38.117114] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[   38.118735] thermal thermal_zone6: failed to read out thermal zone (-61)
[   38.169320] 8021q: 802.1Q VLAN Support v1.8
[   39.854810] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
[   40.035259] r8169 0000:03:00.0 p12p1: Link is Down
[   40.767594] bbswitch: version 0.8
[   40.769310] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
[   40.771205] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.RP01.PEGP
[   40.773264] bbswitch: detected an Optimus _DSM function
[   40.775104] bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is on
[   40.828324] [TTM] Zone  kernel: Used memory at exit: 0 KiB
[   40.830050] [TTM] Zone   dma32: Used memory at exit: 0 KiB
[   40.831964] vga_switcheroo: disabled
[   40.868467] bbswitch: disabling discrete graphics
[   40.888135] pci 0000:01:00.0: refused to change power state from D0 to D3hot
[   42.445247] Bluetooth: Core ver 2.22
[   42.446927] NET: Registered protocol family 31
[   42.448442] Bluetooth: HCI device and connection manager initialized
[   42.450380] Bluetooth: HCI socket layer initialized
[   42.451999] Bluetooth: L2CAP socket layer initialized
[   42.453517] Bluetooth: SCO socket layer initialized
[   42.736428] usbcore: registered new interface driver btusb
[   42.744490] mc: Linux media interface: v0.10
[   42.917907] videodev: Linux video capture interface: v2.00
[   43.042939] Bluetooth: hci0: read Intel version: 370810011003110e00
[   43.372654] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[   43.597205] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   43.598812] Bluetooth: BNEP filters: protocol multicast
[   43.600384] Bluetooth: BNEP socket layer initialized
[   43.629941] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[   43.647952] Bluetooth: hci0: Intel BT fw patch 0x32 completed & activated
[   43.861322] NET: Registered protocol family 38
[   43.876571] uvcvideo: Found UVC 1.00 device Integrated_Webcam_HD (0c45:6712)
[   43.931119] input: Integrated_Webcam_HD: Integrate as /devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/input/input25
[   43.933132] usbcore: registered new interface driver uvcvideo
[   43.934528] USB Video Class driver (1.1.1)
[   48.738024] alg: No test for hmac(md4) (hmac(md4-generic))
[   48.816428] "cryptomgr_test" (10070) uses obsolete ecb(arc4) skcipher
[   48.823384] "iwd" (10028) uses obsolete ecb(arc4) skcipher
[   51.641302] wlan0: authenticate with 68:db:54:a4:ce:68
[   51.647121] wlan0: send auth to 68:db:54:a4:ce:68 (try 1/3)
[   51.650739] wlan0: authenticated
[   51.654860] wlan0: associate with 68:db:54:a4:ce:68 (try 1/3)
[   51.657749] wlan0: RX AssocResp from 68:db:54:a4:ce:68 (capab=0x11 status=0 aid=1)
[   51.660595] wlan0: associated
[   51.679048] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  126.094702] rfkill: input handler disabled
[  141.075008] sushi-start[10906]: segfault at 0 ip 00007f51dccaa1df sp 00007ffd9a021300 error 6 in libgjs.so.0.0.0[7f51dcc56000+8d000]
[  141.075877] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00
[  236.286009] fuse: init (API version 7.33)
[  333.505531] sushi-start[24730]: segfault at 0 ip 00007f47215fe1df sp 00007ffec790f1b0 error 6 in libgjs.so.0.0.0[7f47215aa000+8d000]
[  333.506189] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00
[  754.426363] PM: suspend entry (deep)
[  756.924334] Filesystems sync: 2.501 seconds
[  756.990174] bbswitch: enabling discrete graphics
[  757.102751] Freezing user space processes ... (elapsed 0.004 seconds) done.
[  757.107475] OOM killer disabled.
[  757.107703] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[  757.110061] printk: Suspending console(s) (use no_console_suspend to debug)
[  757.111101] wlan0: deauthenticating from 68:db:54:a4:ce:68 by local choice (Reason: 3=DEAUTH_LEAVING)
[  757.130091] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[  757.131257] sd 0:0:0:0: [sda] Stopping disk
[  757.313472] psmouse serio1: Failed to disable mouse on isa0060/serio1
[  758.132297] PM: suspend devices took 1.024 seconds
[  758.152525] ACPI: EC: interrupt blocked
[  758.189286] ACPI: Preparing to enter system sleep state S3
[  758.226635] ACPI: EC: event blocked
[  758.226639] ACPI: EC: EC stopped
[  758.226642] PM: Saving platform NVS memory
[  758.226817] Disabling non-boot CPUs ...
[  758.230033] smpboot: CPU 1 is now offline
[  758.234081] smpboot: CPU 2 is now offline
[  758.237837] smpboot: CPU 3 is now offline
[  758.242956] ACPI: Low-level resume complete
[  758.243041] ACPI: EC: EC started
[  758.243042] PM: Restoring platform NVS memory
[  758.243756] Enabling non-boot CPUs ...
[  758.243801] x86: Booting SMP configuration:
[  758.243802] smpboot: Booting Node 0 Processor 1 APIC 0x2
[  758.244430] CPU1 is up
[  758.244459] smpboot: Booting Node 0 Processor 2 APIC 0x1
[  758.245167] CPU2 is up
[  758.245197] smpboot: Booting Node 0 Processor 3 APIC 0x3
[  758.245818] CPU3 is up
[  758.247332] ACPI: Waking up from system sleep state S3
[  758.293747] ACPI: EC: interrupt unblocked
[  758.327407] ACPI: EC: event unblocked
[  758.329615] sd 0:0:0:0: [sda] Starting disk
[  758.569157] usb 1-6: reset full-speed USB device number 3 using xhci_hcd
[  758.639374] ata2: SATA link down (SStatus 4 SControl 300)
[  758.832181] usb 1-7: reset high-speed USB device number 4 using xhci_hcd
[  759.095248] usb 1-5: reset full-speed USB device number 2 using xhci_hcd
[  759.238140] PM: resume devices took 0.914 seconds
[  759.247374] acpi LNXPOWER:00: Turning OFF
[  759.248122] OOM killer enabled.
[  759.248595] Restarting tasks ... done.
[  759.301226] bbswitch: disabling discrete graphics
[  759.328442] PM: suspend exit
[  759.424154] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
[  759.605942] r8169 0000:03:00.0 p12p1: Link is Down
[  760.626259] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[  760.692132] ata1.00: configured for UDMA/133
[  761.385527] Bluetooth: hci0: command 0x0c03 tx timeout
[  761.976840] wlan0: authenticate with 68:db:54:a4:ce:68
[  761.981811] wlan0: send auth to 68:db:54:a4:ce:68 (try 1/3)
[  761.984629] wlan0: authenticated
[  761.984989] wlan0: associate with 68:db:54:a4:ce:68 (try 1/3)
[  761.987066] wlan0: RX AssocResp from 68:db:54:a4:ce:68 (capab=0x11 status=0 aid=1)
[  761.988862] wlan0: associated
[  761.995189] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  762.653358] BTRFS warning (device sda2): excessive commit interval 600
[  762.653724] BTRFS info (device sda2): disk space caching is enabled
[  764.141969] Bluetooth: hci0: read Intel version: 370810011003110e00
[  764.142341] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[  764.443954] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[  764.461971] Bluetooth: hci0: Intel BT fw patch 0x32 completed & activated
[  774.235176] sushi-start[71388]: segfault at 0 ip 00007fbff37351df sp 00007ffde2cc1ac0 error 6 in libgjs.so.0.0.0[7fbff36e1000+8d000]
[  774.235854] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00
[ 4051.679504] PM: suspend entry (deep)
[ 4055.390200] Filesystems sync: 3.711 seconds
[ 4055.390991] bbswitch: enabling discrete graphics
[ 4059.586422] pci 0000:01:00.0: enabling device (0400 -> 0403)
[ 4060.000063] Freezing user space processes ... (elapsed 0.002 seconds) done.
[ 4060.003019] OOM killer disabled.
[ 4060.003207] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 4060.004972] printk: Suspending console(s) (use no_console_suspend to debug)
[ 4060.006230] wlan0: deauthenticating from 68:db:54:a4:ce:68 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 4060.022447] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 4060.023904] sd 0:0:0:0: [sda] Stopping disk
[ 4060.500192] PM: suspend devices took 0.494 seconds
[ 4060.520984] ACPI: EC: interrupt blocked
[ 4060.558351] ACPI: Preparing to enter system sleep state S3
[ 4060.591705] ACPI: EC: event blocked
[ 4060.591708] ACPI: EC: EC stopped
[ 4060.591709] PM: Saving platform NVS memory
[ 4060.591831] Disabling non-boot CPUs ...
[ 4060.593425] smpboot: CPU 1 is now offline
[ 4060.597365] smpboot: CPU 2 is now offline
[ 4060.600004] smpboot: CPU 3 is now offline
[ 4060.603637] ACPI: Low-level resume complete
[ 4060.603724] ACPI: EC: EC started
[ 4060.603725] PM: Restoring platform NVS memory
[ 4060.604426] Enabling non-boot CPUs ...
[ 4060.604473] x86: Booting SMP configuration:
[ 4060.604474] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 4060.605093] CPU1 is up
[ 4060.605122] smpboot: Booting Node 0 Processor 2 APIC 0x1
[ 4060.605821] CPU2 is up
[ 4060.605853] smpboot: Booting Node 0 Processor 3 APIC 0x3
[ 4060.606464] CPU3 is up
[ 4060.608030] ACPI: Waking up from system sleep state S3
[ 4060.652409] ACPI: EC: interrupt unblocked
[ 4060.969263] ACPI: EC: event unblocked
[ 4060.969722] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio.
[ 4060.969752] pci 0000:01:00.0: enabling device (0000 -> 0003)
[ 4061.061742] sd 0:0:0:0: [sda] Starting disk
[ 4061.301115] usb 1-5: reset full-speed USB device number 2 using xhci_hcd
[ 4061.370923] ata2: SATA link down (SStatus 4 SControl 300)
[ 4061.564350] usb 1-7: reset high-speed USB device number 4 using xhci_hcd
[ 4061.827716] usb 1-6: reset full-speed USB device number 3 using xhci_hcd
[ 4061.970377] PM: resume devices took 1.004 seconds
[ 4061.980349] OOM killer enabled.
[ 4061.980721] Restarting tasks ... done.
[ 4062.055540] bbswitch: disabling discrete graphics
[ 4062.133055] pci 0000:01:00.0: refused to change power state from D0 to D3hot
[ 4062.136035] PM: suspend exit
[ 4062.226796] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
[ 4062.408500] r8169 0000:03:00.0 p12p1: Link is Down
[ 4062.599824] Bluetooth: hci0: read Intel version: 370810011003110e00
[ 4062.600246] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[ 4062.863843] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[ 4062.881853] Bluetooth: hci0: Intel BT fw patch 0x32 completed & activated
[ 4062.969919] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 4063.036264] ata1.00: configured for UDMA/133
[ 4064.647555] wlan0: authenticate with 68:db:54:a4:ce:68
[ 4064.652943] wlan0: send auth to 68:db:54:a4:ce:68 (try 1/3)
[ 4064.656113] wlan0: authenticated
[ 4064.662887] wlan0: associate with 68:db:54:a4:ce:68 (try 1/3)
[ 4064.665248] wlan0: RX AssocResp from 68:db:54:a4:ce:68 (capab=0x11 status=0 aid=1)
[ 4064.668440] wlan0: associated
[ 4064.674367] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 4066.403581] sushi-start[30528]: segfault at 0 ip 00007fe06501a1df sp 00007ffd3f5295a0 error 6 in libgjs.so.0.0.0[7fe064fc6000+8d000]
[ 4066.404250] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00
[ 6313.657992] wlan0: deauthenticating from 68:db:54:a4:ce:68 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 6313.746349] wlan0: authenticate with 68:db:54:a4:ce:67
[ 6313.750890] wlan0: send auth to 68:db:54:a4:ce:67 (try 1/3)
[ 6313.763282] wlan0: authenticated
[ 6313.769922] wlan0: associate with 68:db:54:a4:ce:67 (try 1/3)
[ 6313.779623] wlan0: RX AssocResp from 68:db:54:a4:ce:67 (capab=0x431 status=0 aid=3)
[ 6313.795813] wlan0: associated
[ 6313.809051] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 6373.594461] sushi-start[180490]: segfault at 0 ip 00007f24c494c1df sp 00007ffff7c3c9a0 error 6 in libgjs.so.0.0.0[7f24c48f8000+8d000]
[ 6373.595120] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00
[ 9360.651357] PM: suspend entry (deep)
[ 9362.798305] Filesystems sync: 2.146 seconds
[ 9363.054407] Freezing user space processes ... (elapsed 0.011 seconds) done.
[ 9363.066508] OOM killer disabled.
[ 9363.066736] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 9363.069333] printk: Suspending console(s) (use no_console_suspend to debug)
[ 9363.070471] wlan0: deauthenticating from 68:db:54:a4:ce:67 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 9363.087439] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 9363.087838] sd 0:0:0:0: [sda] Stopping disk
[ 9363.561332] PM: suspend devices took 0.490 seconds
[ 9363.585938] ACPI: EC: interrupt blocked
[ 9363.623608] ACPI: Preparing to enter system sleep state S3
[ 9363.656793] ACPI: EC: event blocked
[ 9363.656798] ACPI: EC: EC stopped
[ 9363.656800] PM: Saving platform NVS memory
[ 9363.656976] Disabling non-boot CPUs ...
[ 9363.660144] smpboot: CPU 1 is now offline
[ 9363.664157] smpboot: CPU 2 is now offline
[ 9363.667695] smpboot: CPU 3 is now offline
[ 9363.672778] ACPI: Low-level resume complete
[ 9363.672864] ACPI: EC: EC started
[ 9363.672865] PM: Restoring platform NVS memory
[ 9363.673565] Enabling non-boot CPUs ...
[ 9363.673612] x86: Booting SMP configuration:
[ 9363.673612] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 9363.674228] CPU1 is up
[ 9363.674256] smpboot: Booting Node 0 Processor 2 APIC 0x1
[ 9363.674951] CPU2 is up
[ 9363.674981] smpboot: Booting Node 0 Processor 3 APIC 0x3
[ 9363.675609] CPU3 is up
[ 9363.677122] ACPI: Waking up from system sleep state S3
[ 9363.721511] ACPI: EC: interrupt unblocked
[ 9364.041244] ACPI: EC: event unblocked
[ 9364.041794] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio.
[ 9364.042934] sd 0:0:0:0: [sda] Starting disk
[ 9364.282932] usb 1-6: reset full-speed USB device number 3 using xhci_hcd
[ 9364.357066] ata2: SATA link down (SStatus 4 SControl 300)
[ 9364.546444] usb 1-5: reset full-speed USB device number 2 using xhci_hcd
[ 9364.809639] usb 1-7: reset high-speed USB device number 4 using xhci_hcd
[ 9365.024029] PM: resume devices took 0.984 seconds
[ 9365.033488] OOM killer enabled.
[ 9365.033969] Restarting tasks ... done.
[ 9365.060748] Bluetooth: hci0: read Intel version: 370810011003110e00
[ 9365.061105] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
[ 9365.116230] PM: suspend exit
[ 9365.367729] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[ 9365.385750] Bluetooth: hci0: Intel BT fw patch 0x32 completed & activated
[ 9366.009123] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 9366.076001] ata1.00: configured for UDMA/133
[ 9366.302196] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
[ 9366.465599] r8169 0000:03:00.0 p12p1: Link is Down
[ 9368.817574] wlan0: authenticate with 68:db:54:a4:ce:67
[ 9368.821959] wlan0: send auth to 68:db:54:a4:ce:67 (try 1/3)
[ 9368.826138] wlan0: authenticated
[ 9368.832207] wlan0: associate with 68:db:54:a4:ce:67 (try 1/3)
[ 9368.838071] wlan0: RX AssocResp from 68:db:54:a4:ce:67 (capab=0x431 status=0 aid=3)
[ 9368.842056] wlan0: associated
[ 9368.859140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 9370.033157] sushi-start[133476]: segfault at 0 ip 00007fab79fb71df sp 00007fff044e5770 error 6 in libgjs.so.0.0.0[7fab79f63000+8d000]
[ 9370.033832] Code: 8b 7c 24 18 89 c6 4d 89 e0 48 8d 0d c3 30 04 00 31 d2 31 c0 e8 d2 f2 fa ff 48 8b 7b 10 e8 d9 19 03 00 48 8b 44 24 08 45 31 ed <c7> 00 01 00 00 00 e9 82 00 00 00 66 0f 1f 44 00 00 0f b6 ab e1 00

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-22 13:02 [question] free space of disk with btrfs is too different from other du 吴振宇
@ 2021-06-22 14:31 ` Su Yue
       [not found]   ` <CAJ9tZB9M=KOWVLH_azagtBnxDzpV2=ssnBcYsJx6Ao8cQOELhg@mail.gmail.com>
  0 siblings, 1 reply; 24+ messages in thread
From: Su Yue @ 2021-06-22 14:31 UTC (permalink / raw)
  To: 吴振宇; +Cc: linux-btrfs


On Tue 22 Jun 2021 at 21:02, 吴振宇 <wuzy001@gmail.com> wrote:

> Sorry for my disturbance!
>
> my disk with btrfs filesystem tell me it doesn't have enough 
> free space:
>
> ```
> $ sudo btrfs fi df /
> Data, single: total=448.02GiB, used=427.74GiB
> System, DUP: total=8.00MiB, used=64.00KiB
> Metadata, DUP: total=8.80GiB, used=6.39GiB
> GlobalReserve, single: total=512.00MiB, used=0.00B
> $ sudo btrfs fi usage /
> Overall:
>     Device size:                 465.64GiB
>     Device allocated:            465.63GiB
>     Device unallocated:            1.00MiB
>     Device missing:                  0.00B
>     Used:                        440.54GiB
>     Free (estimated):             20.26GiB      (min: 20.26GiB)
>     Data ratio:                       1.00
>     Metadata ratio:                   2.00
>     Global reserve:              512.00MiB      (used: 0.00B)
>     Multiple profiles:                  no
>
> Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
>    /dev/sda2     448.02GiB
>
> Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
>    /dev/sda2      17.60GiB
>
> System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
>    /dev/sda2      16.00MiB
>
> Unallocated:
>    /dev/sda2       1.00MiB
> $ sudo btrfs fi show /
> Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>         Total devices 1 FS bytes used 434.14GiB
>         devid    1 size 465.64GiB used 465.63GiB path /dev/sda2
>
> $ df -Th
> Filesystem     Type      Size  Used Avail Use% Mounted on
> devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
> tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
> tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
> /dev/sda2      btrfs     466G  442G   21G  96% /
> tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
> /dev/sda1      vfat      128M  125M  2.9M  98% /boot
> tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
> tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
> ```
>
> however, i try to use gdu to scan my disk. it tell me
>
> ```
> $ sudo gdu /
>  gdu ~ Use arrow keys to navigate, press ? for help
>  --- / ---
>    49.9 GiB [#####     ] /usr
>    15.1 GiB [#         ] /home
>    11.1 GiB [#         ] /opt
>     6.5 GiB [          ] /var
>   930.8 MiB [          ] /lib
>   124.9 MiB [          ] /boot
>    55.2 MiB [          ] /root
>    50.6 MiB [          ] /etc
>    27.1 MiB [          ] /sbin
>    23.5 MiB [          ] /lib64
>    10.9 MiB [          ] /bin
> . 312.0 KiB [          ] /tmp
>    20.0 KiB [          ] /mnt
> e   4.0 KiB [          ] /srv
> e   4.0 KiB [          ] /tftproot
> @   4.0 KiB [          ] media
>  Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items: 
>  2424046
> Sorting by: size desc
> ```
>
> 427.76GiB or 83.8 GiB!
>
Maybe your fs have some snapshots?
Try:

btrfs subvolume list /

--
Su

> i know btrfs is a CoW filesystem, which means it will cost more 
> space
> to store a file. but the gap is too large, which it is hard to 
> accept
> the fact.
> who can tell me what happened to my disk? and how can i do to 
> rescue
> my hard disk? the rest free space is not enough. if i cannot 
> find the
> solution, maybe i should format my hard disk to get more free 
> space.
> thanks.
>
> there are some information which maybe useful.
>
> ```
> $ uname -r
> 5.11.7-gentoo-x86_64
> $ btrfs --version
> btrfs-progs v5.9
> $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
> Pasting > 25 kB often tend to fail with dpaste. Use --verbose or
> --debug to see the
> error output from wget if it fails. Alternatively use another 
> pastebin service.
> Your paste can be seen here: https://dpaste.com/FCZF83YYA
> ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
       [not found]     ` <5yy5orgi.fsf@damenly.su>
@ 2021-06-23 11:46       ` 吴振宇
  2021-06-23 12:00         ` Qu Wenruo
  0 siblings, 1 reply; 24+ messages in thread
From: 吴振宇 @ 2021-06-23 11:46 UTC (permalink / raw)
  To: Su Yue; +Cc: linux-btrfs

Thanks for your tips! i forgot to CC linux-btrfs when reply you. sorry.

i believe this problem which my disk is out of memory does not occur
suddenly. before i notice this problem, i use snapper with its default config
to make snapshot for my btrfs filesystem. snapper will create many snapshots
so i don't detect that how much is the true free space (without snapshots),
and when the disk is out of memory. every time i feel the free space is too
small, i will `snapper delete` some snapshots. but the free space of my disk
still decrease inappearently.

about ten days ago, after one compter crash (system freeze), i press power
button to try to restart it. before this time, the same thing has happened
not only one time, but this time is different. after restart, the OS cannot
work -- after dmesg print (these information comes from my mobile photos)
```
[4.941061] BTRFS info (device sda2): disk space caching is enabled
[4.941549] BTRFS info (device sda2): has skinny extents
[11.937528] BTRFS info (device sda2): start tree-log replay
```

after about 200 seconds, it print more information
```
[259.503140] BTRFS: error (device sda2) in btrfs_replay_log:2254:
errno=-22 unknown (Failed to recover log tree)
# this line occur many times
[273.XXXXXX] BTRFS warning (device sda2): page private not zero on
page 85809XXXXXX
[273.478984] BTRFS error (device sda2): open_ctree failed
```

perhaps i should seek for help that time, but i think i should try to solve
this problem by myself first to avoid disturb other one. after boot my
computer from liveUSB, then I try to mount /dev/sda2, but failed. then i try
to `btrfs check /dev/sda2` but not use `--repair` because `--repair` is so
dangerous. it tell me some error like 100, 200, 1.
i try to
```
btrfs rescue chunk-recovery /dev/sda2
btrfs rescue super-recovery /dev/sda2
```
but still cannot mount /dev/sda2. at last,
```
btrfs rescue zero-log /dev/sda2
```
work and i can mount /dev/sda2. then i can reboot my OS without liveUSB.
after then, i use `find -inum XXX` to search that file which inode is error
100, and found they are `~/.cache/google-chrome/Default/Code\ Cache/js/XXXXXX`
and delete them.

after that time, i doubt my filesystem is not normal. and try to use some du
tools to scan my disk. initially i thought maybe my disk is full truly. but
this is the gdu result: (these information come from my mobile photos)
```
gdu ~ Use arrow keys to navigate, press ? for help
--- /mnt/gentoo ---
 115.3 GiB [#####     ] /.snapshots
  49.8 GiB [##        ] /usr
  33.4 GiB [#         ] /home
  12.5 GiB [          ] /opt
   9.7 GiB [          ] /var
 930.8 MiB [          ] /lib
  55.2 MiB [          ] /root
  50.6 MiB [          ] /etc
  27.1 MiB [          ] /sbin
  23.5 MiB [          ] /lib64
  10.1 MiB [          ] /bin
   8.1 MiB [          ] /tftproot
  24.0 KiB [          ] /dev
  20.0 KiB [          ] /mnt
  20.0 KiB [          ] /run
   4.0 KiB [          ] /sys
e  4.0 KiB [          ] /proc
e  4.0 KiB [          ] /boot
e  4.0 KiB [          ] /srv
e  4.0 KiB [          ] /tmp
@  4.0 KiB [          ] media
Total disk usage: 221.8 GiB Apparent size: 210.7 GiB Items: 5175776
Sorting by: size desc
```

so i try to delete snapshots but the free space is not change almostly --
maybe because they are snapshots. then i try to delete some `~/.cache` and
some file to make `df -Th` have 4% free space in order to i can use my
computer now.

it's almostly all the things i can remember with the remind of photos. if you
want to see any other output of program, i'll do. thanks.

sorry for disturbing anyone's precious time!

On Wed, Jun 23, 2021 at 5:33 PM Su Yue <l@damenly.su> wrote:
>
>
> On Wed 23 Jun 2021 at 14:47, Zhenyu Wu <wuzy001@gmail.com> wrote:
>
> BTW if your info is not so sensitive, better to reply me and CC
> linux-btrfs. Others can see your info and help you ;)
>
> --
> Su
> > Sorry for my late reply!
> > thanks for your suggestion.
> > ```
> > $ sudo btrfs subvolume list /
> > ID 7501 gen 942958 top level 5 path srv
> > ID 7502 gen 942959 top level 5 path var/lib/portables
> > ID 7503 gen 942960 top level 5 path var/lib/machines
> > ```
> >
> > these directories are all empty. however, if i delete them:
> >
> > ```
> > $ sudo btrfs subvolume delete
> > {/srv,/var/lib/portables,/var/lib/machines}
> > Delete subvolume (no-commit): '//srv'
> > Delete subvolume (no-commit): '/var/lib/portables'
> > Delete subvolume (no-commit): '/var/lib/machines'
> > ```
> >
> > when i reboot, these will occur again. i believe there exists
> > some
> > autostart script to create these subvolumes.
> >
> > i don't know whether this is the true reason. how can i do to
> > solve
> > this problem?
> >
> > thanks!
> >
> > On Tue, Jun 22, 2021 at 10:33 PM Su Yue <l@damenly.su> wrote:
> >>
> >>
> >> On Tue 22 Jun 2021 at 21:02, Zhenyu Wu <wuzy001@gmail.com> wrote:
> >>
> >> > Sorry for my disturbance!
> >> >
> >> > my disk with btrfs filesystem tell me it doesn't have enough
> >> > free space:
> >> >
> >> > ```
> >> > $ sudo btrfs fi df /
> >> > Data, single: total=448.02GiB, used=427.74GiB
> >> > System, DUP: total=8.00MiB, used=64.00KiB
> >> > Metadata, DUP: total=8.80GiB, used=6.39GiB
> >> > GlobalReserve, single: total=512.00MiB, used=0.00B
> >> > $ sudo btrfs fi usage /
> >> > Overall:
> >> >     Device size:                 465.64GiB
> >> >     Device allocated:            465.63GiB
> >> >     Device unallocated:            1.00MiB
> >> >     Device missing:                  0.00B
> >> >     Used:                        440.54GiB
> >> >     Free (estimated):             20.26GiB      (min:
> >> >     20.26GiB)
> >> >     Data ratio:                       1.00
> >> >     Metadata ratio:                   2.00
> >> >     Global reserve:              512.00MiB      (used: 0.00B)
> >> >     Multiple profiles:                  no
> >> >
> >> > Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
> >> >    /dev/sda2     448.02GiB
> >> >
> >> > Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
> >> >    /dev/sda2      17.60GiB
> >> >
> >> > System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
> >> >    /dev/sda2      16.00MiB
> >> >
> >> > Unallocated:
> >> >    /dev/sda2       1.00MiB
> >> > $ sudo btrfs fi show /
> >> > Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >> >         Total devices 1 FS bytes used 434.14GiB
> >> >         devid    1 size 465.64GiB used 465.63GiB path
> >> >         /dev/sda2
> >> >
> >> > $ df -Th
> >> > Filesystem     Type      Size  Used Avail Use% Mounted on
> >> > devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
> >> > tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
> >> > tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
> >> > /dev/sda2      btrfs     466G  442G   21G  96% /
> >> > tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
> >> > /dev/sda1      vfat      128M  125M  2.9M  98% /boot
> >> > tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
> >> > tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
> >> > ```
> >> >
> >> > however, i try to use gdu to scan my disk. it tell me
> >> >
> >> > ```
> >> > $ sudo gdu /
> >> >  gdu ~ Use arrow keys to navigate, press ? for help
> >> >  --- / ---
> >> >    49.9 GiB [#####     ] /usr
> >> >    15.1 GiB [#         ] /home
> >> >    11.1 GiB [#         ] /opt
> >> >     6.5 GiB [          ] /var
> >> >   930.8 MiB [          ] /lib
> >> >   124.9 MiB [          ] /boot
> >> >    55.2 MiB [          ] /root
> >> >    50.6 MiB [          ] /etc
> >> >    27.1 MiB [          ] /sbin
> >> >    23.5 MiB [          ] /lib64
> >> >    10.9 MiB [          ] /bin
> >> > . 312.0 KiB [          ] /tmp
> >> >    20.0 KiB [          ] /mnt
> >> > e   4.0 KiB [          ] /srv
> >> > e   4.0 KiB [          ] /tftproot
> >> > @   4.0 KiB [          ] media
> >> >  Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items:
> >> >  2424046
> >> > Sorting by: size desc
> >> > ```
> >> >
> >> > 427.76GiB or 83.8 GiB!
> >> >
> >> Maybe your fs have some snapshots?
> >> Try:
> >>
> >> btrfs subvolume list /
> >>
> >> --
> >> Su
> >>
> >> > i know btrfs is a CoW filesystem, which means it will cost
> >> > more
> >> > space
> >> > to store a file. but the gap is too large, which it is hard
> >> > to
> >> > accept
> >> > the fact.
> >> > who can tell me what happened to my disk? and how can i do to
> >> > rescue
> >> > my hard disk? the rest free space is not enough. if i cannot
> >> > find the
> >> > solution, maybe i should format my hard disk to get more free
> >> > space.
> >> > thanks.
> >> >
> >> > there are some information which maybe useful.
> >> >
> >> > ```
> >> > $ uname -r
> >> > 5.11.7-gentoo-x86_64
> >> > $ btrfs --version
> >> > btrfs-progs v5.9
> >> > $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
> >> > Pasting > 25 kB often tend to fail with dpaste. Use --verbose
> >> > or
> >> > --debug to see the
> >> > error output from wget if it fails. Alternatively use another
> >> > pastebin service.
> >> > Your paste can be seen here: https://dpaste.com/FCZF83YYA
> >> > ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-23 11:46       ` 吴振宇
@ 2021-06-23 12:00         ` Qu Wenruo
  2021-06-23 12:08           ` Qu Wenruo
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-23 12:00 UTC (permalink / raw)
  To: 吴振宇, Su Yue; +Cc: linux-btrfs



On 2021/6/23 下午7:46, 吴振宇 wrote:
> Thanks for your tips! i forgot to CC linux-btrfs when reply you. sorry.
>
> i believe this problem which my disk is out of memory does not occur

By "out of memory" I guess you mean "out of space"?

> suddenly. before i notice this problem, i use snapper with its default config
> to make snapshot for my btrfs filesystem. snapper will create many snapshots
> so i don't detect that how much is the true free space (without snapshots),
> and when the disk is out of memory. every time i feel the free space is too
> small, i will `snapper delete` some snapshots. but the free space of my disk
> still decrease inappearently.

This is strange.

Either the deletion is delayed and something wrong happened, they should
really not behave like this.

>
> about ten days ago, after one compter crash (system freeze), i press power
> button to try to restart it. before this time, the same thing has happened
> not only one time, but this time is different. after restart, the OS cannot
> work -- after dmesg print (these information comes from my mobile photos)
> ```
> [4.941061] BTRFS info (device sda2): disk space caching is enabled
> [4.941549] BTRFS info (device sda2): has skinny extents
> [11.937528] BTRFS info (device sda2): start tree-log replay
> ```
>
> after about 200 seconds, it print more information
> ```
> [259.503140] BTRFS: error (device sda2) in btrfs_replay_log:2254:
> errno=-22 unknown (Failed to recover log tree)

This is not a big deal, btrfs rescue zero log should handle it without
problem.

> # this line occur many times
> [273.XXXXXX] BTRFS warning (device sda2): page private not zero on
> page 85809XXXXXX
> [273.478984] BTRFS error (device sda2): open_ctree failed
> ```
>
> perhaps i should seek for help that time, but i think i should try to solve
> this problem by myself first to avoid disturb other one. after boot my
> computer from liveUSB, then I try to mount /dev/sda2, but failed. then i try
> to `btrfs check /dev/sda2` but not use `--repair` because `--repair` is so
> dangerous. it tell me some error like 100, 200, 1.
> i try to
> ```
> btrfs rescue chunk-recovery /dev/sda2
> btrfs rescue super-recovery /dev/sda2
> ```

Those are a little dangerous now...

> but still cannot mount /dev/sda2. at last,
> ```
> btrfs rescue zero-log /dev/sda2
> ```

As expected, zero log should work.

> work and i can mount /dev/sda2. then i can reboot my OS without liveUSB.
> after then, i use `find -inum XXX` to search that file which inode is error
> 100, and found they are `~/.cache/google-chrome/Default/Code\ Cache/js/XXXXXX`
> and delete them.

error 0x100 is inode file extent discount, it's a pretty low priority thing.
Kernel can handle it without problem.

>
> after that time, i doubt my filesystem is not normal. and try to use some du
> tools to scan my disk. initially i thought maybe my disk is full truly. but
> this is the gdu result: (these information come from my mobile photos)
> ```
> gdu ~ Use arrow keys to navigate, press ? for help
> --- /mnt/gentoo ---
>   115.3 GiB [#####     ] /.snapshots
>    49.8 GiB [##        ] /usr
>    33.4 GiB [#         ] /home
>    12.5 GiB [          ] /opt
>     9.7 GiB [          ] /var
>   930.8 MiB [          ] /lib
>    55.2 MiB [          ] /root
>    50.6 MiB [          ] /etc
>    27.1 MiB [          ] /sbin
>    23.5 MiB [          ] /lib64
>    10.1 MiB [          ] /bin
>     8.1 MiB [          ] /tftproot
>    24.0 KiB [          ] /dev
>    20.0 KiB [          ] /mnt
>    20.0 KiB [          ] /run
>     4.0 KiB [          ] /sys
> e  4.0 KiB [          ] /proc
> e  4.0 KiB [          ] /boot
> e  4.0 KiB [          ] /srv
> e  4.0 KiB [          ] /tmp
> @  4.0 KiB [          ] media
> Total disk usage: 221.8 GiB Apparent size: 210.7 GiB Items: 5175776
> Sorting by: size desc
> ```
>
> so i try to delete snapshots but the free space is not change almostly --
> maybe because they are snapshots. then i try to delete some `~/.cache` and
> some file to make `df -Th` have 4% free space in order to i can use my
> computer now.

Snapshot deletion doesn't happen immediate.

They just get unlinked first, and then get deleted at background.

It's preferred to run "btrfs fi sync" to wait for all of the deletion
finishes, then check again.


BTW, if you are not confident about the healthy of your fs, use liveUSB
to run "btrfs check" on the fs and save the output.

I don't believe it's a big deal, mostly just small (and mostly solvable)
problems.

>
> it's almostly all the things i can remember with the remind of photos. if you
> want to see any other output of program, i'll do. thanks.
>
> sorry for disturbing anyone's precious time!

Don't need to be too humble, in fact we really care what the end users
hits in real world, so that we can enhance btrfs.

As long as your kernel isn't too heavily backported nor too old, we're
pretty happy to help.

Thanks,
Qu

>
> On Wed, Jun 23, 2021 at 5:33 PM Su Yue <l@damenly.su> wrote:
>>
>>
>> On Wed 23 Jun 2021 at 14:47, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>
>> BTW if your info is not so sensitive, better to reply me and CC
>> linux-btrfs. Others can see your info and help you ;)
>>
>> --
>> Su
>>> Sorry for my late reply!
>>> thanks for your suggestion.
>>> ```
>>> $ sudo btrfs subvolume list /
>>> ID 7501 gen 942958 top level 5 path srv
>>> ID 7502 gen 942959 top level 5 path var/lib/portables
>>> ID 7503 gen 942960 top level 5 path var/lib/machines
>>> ```
>>>
>>> these directories are all empty. however, if i delete them:
>>>
>>> ```
>>> $ sudo btrfs subvolume delete
>>> {/srv,/var/lib/portables,/var/lib/machines}
>>> Delete subvolume (no-commit): '//srv'
>>> Delete subvolume (no-commit): '/var/lib/portables'
>>> Delete subvolume (no-commit): '/var/lib/machines'
>>> ```
>>>
>>> when i reboot, these will occur again. i believe there exists
>>> some
>>> autostart script to create these subvolumes.
>>>
>>> i don't know whether this is the true reason. how can i do to
>>> solve
>>> this problem?
>>>
>>> thanks!
>>>
>>> On Tue, Jun 22, 2021 at 10:33 PM Su Yue <l@damenly.su> wrote:
>>>>
>>>>
>>>> On Tue 22 Jun 2021 at 21:02, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>>>
>>>>> Sorry for my disturbance!
>>>>>
>>>>> my disk with btrfs filesystem tell me it doesn't have enough
>>>>> free space:
>>>>>
>>>>> ```
>>>>> $ sudo btrfs fi df /
>>>>> Data, single: total=448.02GiB, used=427.74GiB
>>>>> System, DUP: total=8.00MiB, used=64.00KiB
>>>>> Metadata, DUP: total=8.80GiB, used=6.39GiB
>>>>> GlobalReserve, single: total=512.00MiB, used=0.00B
>>>>> $ sudo btrfs fi usage /
>>>>> Overall:
>>>>>      Device size:                 465.64GiB
>>>>>      Device allocated:            465.63GiB
>>>>>      Device unallocated:            1.00MiB
>>>>>      Device missing:                  0.00B
>>>>>      Used:                        440.54GiB
>>>>>      Free (estimated):             20.26GiB      (min:
>>>>>      20.26GiB)
>>>>>      Data ratio:                       1.00
>>>>>      Metadata ratio:                   2.00
>>>>>      Global reserve:              512.00MiB      (used: 0.00B)
>>>>>      Multiple profiles:                  no
>>>>>
>>>>> Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
>>>>>     /dev/sda2     448.02GiB
>>>>>
>>>>> Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
>>>>>     /dev/sda2      17.60GiB
>>>>>
>>>>> System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
>>>>>     /dev/sda2      16.00MiB
>>>>>
>>>>> Unallocated:
>>>>>     /dev/sda2       1.00MiB
>>>>> $ sudo btrfs fi show /
>>>>> Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>>>          Total devices 1 FS bytes used 434.14GiB
>>>>>          devid    1 size 465.64GiB used 465.63GiB path
>>>>>          /dev/sda2
>>>>>
>>>>> $ df -Th
>>>>> Filesystem     Type      Size  Used Avail Use% Mounted on
>>>>> devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
>>>>> tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
>>>>> tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
>>>>> /dev/sda2      btrfs     466G  442G   21G  96% /
>>>>> tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
>>>>> /dev/sda1      vfat      128M  125M  2.9M  98% /boot
>>>>> tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
>>>>> tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
>>>>> ```
>>>>>
>>>>> however, i try to use gdu to scan my disk. it tell me
>>>>>
>>>>> ```
>>>>> $ sudo gdu /
>>>>>   gdu ~ Use arrow keys to navigate, press ? for help
>>>>>   --- / ---
>>>>>     49.9 GiB [#####     ] /usr
>>>>>     15.1 GiB [#         ] /home
>>>>>     11.1 GiB [#         ] /opt
>>>>>      6.5 GiB [          ] /var
>>>>>    930.8 MiB [          ] /lib
>>>>>    124.9 MiB [          ] /boot
>>>>>     55.2 MiB [          ] /root
>>>>>     50.6 MiB [          ] /etc
>>>>>     27.1 MiB [          ] /sbin
>>>>>     23.5 MiB [          ] /lib64
>>>>>     10.9 MiB [          ] /bin
>>>>> . 312.0 KiB [          ] /tmp
>>>>>     20.0 KiB [          ] /mnt
>>>>> e   4.0 KiB [          ] /srv
>>>>> e   4.0 KiB [          ] /tftproot
>>>>> @   4.0 KiB [          ] media
>>>>>   Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items:
>>>>>   2424046
>>>>> Sorting by: size desc
>>>>> ```
>>>>>
>>>>> 427.76GiB or 83.8 GiB!
>>>>>
>>>> Maybe your fs have some snapshots?
>>>> Try:
>>>>
>>>> btrfs subvolume list /
>>>>
>>>> --
>>>> Su
>>>>
>>>>> i know btrfs is a CoW filesystem, which means it will cost
>>>>> more
>>>>> space
>>>>> to store a file. but the gap is too large, which it is hard
>>>>> to
>>>>> accept
>>>>> the fact.
>>>>> who can tell me what happened to my disk? and how can i do to
>>>>> rescue
>>>>> my hard disk? the rest free space is not enough. if i cannot
>>>>> find the
>>>>> solution, maybe i should format my hard disk to get more free
>>>>> space.
>>>>> thanks.
>>>>>
>>>>> there are some information which maybe useful.
>>>>>
>>>>> ```
>>>>> $ uname -r
>>>>> 5.11.7-gentoo-x86_64
>>>>> $ btrfs --version
>>>>> btrfs-progs v5.9
>>>>> $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
>>>>> Pasting > 25 kB often tend to fail with dpaste. Use --verbose
>>>>> or
>>>>> --debug to see the
>>>>> error output from wget if it fails. Alternatively use another
>>>>> pastebin service.
>>>>> Your paste can be seen here: https://dpaste.com/FCZF83YYA
>>>>> ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-23 12:00         ` Qu Wenruo
@ 2021-06-23 12:08           ` Qu Wenruo
  2021-06-24  7:45             ` Zhenyu Wu
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-23 12:08 UTC (permalink / raw)
  To: 吴振宇, Su Yue; +Cc: linux-btrfs



On 2021/6/23 下午8:00, Qu Wenruo wrote:
>
>
> On 2021/6/23 下午7:46, 吴振宇 wrote:
>> Thanks for your tips! i forgot to CC linux-btrfs when reply you. sorry.
>>
>> i believe this problem which my disk is out of memory does not occur
>
> By "out of memory" I guess you mean "out of space"?
>
>> suddenly. before i notice this problem, i use snapper with its default
>> config
>> to make snapshot for my btrfs filesystem. snapper will create many
>> snapshots
>> so i don't detect that how much is the true free space (without
>> snapshots),
>> and when the disk is out of memory. every time i feel the free space
>> is too
>> small, i will `snapper delete` some snapshots. but the free space of
>> my disk
>> still decrease inappearently.
>
> This is strange.
>
> Either the deletion is delayed and something wrong happened, they should
> really not behave like this.

BTW, since you're using snapper, maybe it has already enabled qgroup.

With qgroup, it has some pretty good indication of real space used by
certain subvolume.
This number includes the extent booking, which would be more accurate
numbers.

Also, qgroup could more or less shows the process of snapshot deletion,
so you can check it by the following command:

# btrfs qgroup show -prce </mnt>

Thanks,
Qu

>
>>
>> about ten days ago, after one compter crash (system freeze), i press
>> power
>> button to try to restart it. before this time, the same thing has
>> happened
>> not only one time, but this time is different. after restart, the OS
>> cannot
>> work -- after dmesg print (these information comes from my mobile photos)
>> ```
>> [4.941061] BTRFS info (device sda2): disk space caching is enabled
>> [4.941549] BTRFS info (device sda2): has skinny extents
>> [11.937528] BTRFS info (device sda2): start tree-log replay
>> ```
>>
>> after about 200 seconds, it print more information
>> ```
>> [259.503140] BTRFS: error (device sda2) in btrfs_replay_log:2254:
>> errno=-22 unknown (Failed to recover log tree)
>
> This is not a big deal, btrfs rescue zero log should handle it without
> problem.
>
>> # this line occur many times
>> [273.XXXXXX] BTRFS warning (device sda2): page private not zero on
>> page 85809XXXXXX
>> [273.478984] BTRFS error (device sda2): open_ctree failed
>> ```
>>
>> perhaps i should seek for help that time, but i think i should try to
>> solve
>> this problem by myself first to avoid disturb other one. after boot my
>> computer from liveUSB, then I try to mount /dev/sda2, but failed. then
>> i try
>> to `btrfs check /dev/sda2` but not use `--repair` because `--repair`
>> is so
>> dangerous. it tell me some error like 100, 200, 1.
>> i try to
>> ```
>> btrfs rescue chunk-recovery /dev/sda2
>> btrfs rescue super-recovery /dev/sda2
>> ```
>
> Those are a little dangerous now...
>
>> but still cannot mount /dev/sda2. at last,
>> ```
>> btrfs rescue zero-log /dev/sda2
>> ```
>
> As expected, zero log should work.
>
>> work and i can mount /dev/sda2. then i can reboot my OS without liveUSB.
>> after then, i use `find -inum XXX` to search that file which inode is
>> error
>> 100, and found they are `~/.cache/google-chrome/Default/Code\
>> Cache/js/XXXXXX`
>> and delete them.
>
> error 0x100 is inode file extent discount, it's a pretty low priority
> thing.
> Kernel can handle it without problem.
>
>>
>> after that time, i doubt my filesystem is not normal. and try to use
>> some du
>> tools to scan my disk. initially i thought maybe my disk is full
>> truly. but
>> this is the gdu result: (these information come from my mobile photos)
>> ```
>> gdu ~ Use arrow keys to navigate, press ? for help
>> --- /mnt/gentoo ---
>>   115.3 GiB [#####     ] /.snapshots
>>    49.8 GiB [##        ] /usr
>>    33.4 GiB [#         ] /home
>>    12.5 GiB [          ] /opt
>>     9.7 GiB [          ] /var
>>   930.8 MiB [          ] /lib
>>    55.2 MiB [          ] /root
>>    50.6 MiB [          ] /etc
>>    27.1 MiB [          ] /sbin
>>    23.5 MiB [          ] /lib64
>>    10.1 MiB [          ] /bin
>>     8.1 MiB [          ] /tftproot
>>    24.0 KiB [          ] /dev
>>    20.0 KiB [          ] /mnt
>>    20.0 KiB [          ] /run
>>     4.0 KiB [          ] /sys
>> e  4.0 KiB [          ] /proc
>> e  4.0 KiB [          ] /boot
>> e  4.0 KiB [          ] /srv
>> e  4.0 KiB [          ] /tmp
>> @  4.0 KiB [          ] media
>> Total disk usage: 221.8 GiB Apparent size: 210.7 GiB Items: 5175776
>> Sorting by: size desc
>> ```
>>
>> so i try to delete snapshots but the free space is not change almostly --
>> maybe because they are snapshots. then i try to delete some `~/.cache`
>> and
>> some file to make `df -Th` have 4% free space in order to i can use my
>> computer now.
>
> Snapshot deletion doesn't happen immediate.
>
> They just get unlinked first, and then get deleted at background.
>
> It's preferred to run "btrfs fi sync" to wait for all of the deletion
> finishes, then check again.
>
>
> BTW, if you are not confident about the healthy of your fs, use liveUSB
> to run "btrfs check" on the fs and save the output.
>
> I don't believe it's a big deal, mostly just small (and mostly solvable)
> problems.
>
>>
>> it's almostly all the things i can remember with the remind of photos.
>> if you
>> want to see any other output of program, i'll do. thanks.
>>
>> sorry for disturbing anyone's precious time!
>
> Don't need to be too humble, in fact we really care what the end users
> hits in real world, so that we can enhance btrfs.
>
> As long as your kernel isn't too heavily backported nor too old, we're
> pretty happy to help.
>
> Thanks,
> Qu
>
>>
>> On Wed, Jun 23, 2021 at 5:33 PM Su Yue <l@damenly.su> wrote:
>>>
>>>
>>> On Wed 23 Jun 2021 at 14:47, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>>
>>> BTW if your info is not so sensitive, better to reply me and CC
>>> linux-btrfs. Others can see your info and help you ;)
>>>
>>> --
>>> Su
>>>> Sorry for my late reply!
>>>> thanks for your suggestion.
>>>> ```
>>>> $ sudo btrfs subvolume list /
>>>> ID 7501 gen 942958 top level 5 path srv
>>>> ID 7502 gen 942959 top level 5 path var/lib/portables
>>>> ID 7503 gen 942960 top level 5 path var/lib/machines
>>>> ```
>>>>
>>>> these directories are all empty. however, if i delete them:
>>>>
>>>> ```
>>>> $ sudo btrfs subvolume delete
>>>> {/srv,/var/lib/portables,/var/lib/machines}
>>>> Delete subvolume (no-commit): '//srv'
>>>> Delete subvolume (no-commit): '/var/lib/portables'
>>>> Delete subvolume (no-commit): '/var/lib/machines'
>>>> ```
>>>>
>>>> when i reboot, these will occur again. i believe there exists
>>>> some
>>>> autostart script to create these subvolumes.
>>>>
>>>> i don't know whether this is the true reason. how can i do to
>>>> solve
>>>> this problem?
>>>>
>>>> thanks!
>>>>
>>>> On Tue, Jun 22, 2021 at 10:33 PM Su Yue <l@damenly.su> wrote:
>>>>>
>>>>>
>>>>> On Tue 22 Jun 2021 at 21:02, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>>>>
>>>>>> Sorry for my disturbance!
>>>>>>
>>>>>> my disk with btrfs filesystem tell me it doesn't have enough
>>>>>> free space:
>>>>>>
>>>>>> ```
>>>>>> $ sudo btrfs fi df /
>>>>>> Data, single: total=448.02GiB, used=427.74GiB
>>>>>> System, DUP: total=8.00MiB, used=64.00KiB
>>>>>> Metadata, DUP: total=8.80GiB, used=6.39GiB
>>>>>> GlobalReserve, single: total=512.00MiB, used=0.00B
>>>>>> $ sudo btrfs fi usage /
>>>>>> Overall:
>>>>>>      Device size:                 465.64GiB
>>>>>>      Device allocated:            465.63GiB
>>>>>>      Device unallocated:            1.00MiB
>>>>>>      Device missing:                  0.00B
>>>>>>      Used:                        440.54GiB
>>>>>>      Free (estimated):             20.26GiB      (min:
>>>>>>      20.26GiB)
>>>>>>      Data ratio:                       1.00
>>>>>>      Metadata ratio:                   2.00
>>>>>>      Global reserve:              512.00MiB      (used: 0.00B)
>>>>>>      Multiple profiles:                  no
>>>>>>
>>>>>> Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
>>>>>>     /dev/sda2     448.02GiB
>>>>>>
>>>>>> Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
>>>>>>     /dev/sda2      17.60GiB
>>>>>>
>>>>>> System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
>>>>>>     /dev/sda2      16.00MiB
>>>>>>
>>>>>> Unallocated:
>>>>>>     /dev/sda2       1.00MiB
>>>>>> $ sudo btrfs fi show /
>>>>>> Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>>>>          Total devices 1 FS bytes used 434.14GiB
>>>>>>          devid    1 size 465.64GiB used 465.63GiB path
>>>>>>          /dev/sda2
>>>>>>
>>>>>> $ df -Th
>>>>>> Filesystem     Type      Size  Used Avail Use% Mounted on
>>>>>> devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
>>>>>> tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
>>>>>> tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
>>>>>> /dev/sda2      btrfs     466G  442G   21G  96% /
>>>>>> tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
>>>>>> /dev/sda1      vfat      128M  125M  2.9M  98% /boot
>>>>>> tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
>>>>>> tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
>>>>>> ```
>>>>>>
>>>>>> however, i try to use gdu to scan my disk. it tell me
>>>>>>
>>>>>> ```
>>>>>> $ sudo gdu /
>>>>>>   gdu ~ Use arrow keys to navigate, press ? for help
>>>>>>   --- / ---
>>>>>>     49.9 GiB [#####     ] /usr
>>>>>>     15.1 GiB [#         ] /home
>>>>>>     11.1 GiB [#         ] /opt
>>>>>>      6.5 GiB [          ] /var
>>>>>>    930.8 MiB [          ] /lib
>>>>>>    124.9 MiB [          ] /boot
>>>>>>     55.2 MiB [          ] /root
>>>>>>     50.6 MiB [          ] /etc
>>>>>>     27.1 MiB [          ] /sbin
>>>>>>     23.5 MiB [          ] /lib64
>>>>>>     10.9 MiB [          ] /bin
>>>>>> . 312.0 KiB [          ] /tmp
>>>>>>     20.0 KiB [          ] /mnt
>>>>>> e   4.0 KiB [          ] /srv
>>>>>> e   4.0 KiB [          ] /tftproot
>>>>>> @   4.0 KiB [          ] media
>>>>>>   Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items:
>>>>>>   2424046
>>>>>> Sorting by: size desc
>>>>>> ```
>>>>>>
>>>>>> 427.76GiB or 83.8 GiB!
>>>>>>
>>>>> Maybe your fs have some snapshots?
>>>>> Try:
>>>>>
>>>>> btrfs subvolume list /
>>>>>
>>>>> --
>>>>> Su
>>>>>
>>>>>> i know btrfs is a CoW filesystem, which means it will cost
>>>>>> more
>>>>>> space
>>>>>> to store a file. but the gap is too large, which it is hard
>>>>>> to
>>>>>> accept
>>>>>> the fact.
>>>>>> who can tell me what happened to my disk? and how can i do to
>>>>>> rescue
>>>>>> my hard disk? the rest free space is not enough. if i cannot
>>>>>> find the
>>>>>> solution, maybe i should format my hard disk to get more free
>>>>>> space.
>>>>>> thanks.
>>>>>>
>>>>>> there are some information which maybe useful.
>>>>>>
>>>>>> ```
>>>>>> $ uname -r
>>>>>> 5.11.7-gentoo-x86_64
>>>>>> $ btrfs --version
>>>>>> btrfs-progs v5.9
>>>>>> $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
>>>>>> Pasting > 25 kB often tend to fail with dpaste. Use --verbose
>>>>>> or
>>>>>> --debug to see the
>>>>>> error output from wget if it fails. Alternatively use another
>>>>>> pastebin service.
>>>>>> Your paste can be seen here: https://dpaste.com/FCZF83YYA
>>>>>> ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-23 12:08           ` Qu Wenruo
@ 2021-06-24  7:45             ` Zhenyu Wu
  2021-06-24  7:54               ` Qu Wenruo
  2021-06-24  8:32               ` Graham Cobb
  0 siblings, 2 replies; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-24  7:45 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Su Yue, linux-btrfs

Thanks! this is some information of some programs.
```
# boot from liveUSB
$ btrfs check /dev/sda2
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space cache
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups
# after mount /dev/sda2 to /mnt/gentoo
$ btrfs fi sync /mnt/gentoo
# no output
```

```
# normal boot
$ sudo btrfs qoata rescan /
$ sudo btrfs qgroup show -pcre /
qgroupid         rfer         excl     max_rfer     max_excl parent   child
--------         ----         ----     --------     -------- ------   -----
0/5          81.23GiB      6.90GiB         none         none ---      ---
0/265           0.00B        0.00B         none         none ---      ---
0/266           0.00B        0.00B         none         none ---      ---
0/267           0.00B        0.00B         none         none ---      ---
0/6482          0.00B        0.00B         none         none ---      ---
0/7501       16.00KiB     16.00KiB         none         none ---      ---
0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
1/0             0.00B        0.00B         none         none ---      ---
255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
```
i don't know why these qgroups exist because they are not created by me...

the result of `btrfs check` looks like now there is not any error in
filesystem. but i still want to know where does the free space go and
how to inrease them?

out of memory is a typo. sorry:(

sorry for late, `btrfs check` costs a very long time.

On Wed, Jun 23, 2021 at 8:08 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/23 下午8:00, Qu Wenruo wrote:
> >
> >
> > On 2021/6/23 下午7:46, 吴振宇 wrote:
> >> Thanks for your tips! i forgot to CC linux-btrfs when reply you. sorry.
> >>
> >> i believe this problem which my disk is out of memory does not occur
> >
> > By "out of memory" I guess you mean "out of space"?
> >
> >> suddenly. before i notice this problem, i use snapper with its default
> >> config
> >> to make snapshot for my btrfs filesystem. snapper will create many
> >> snapshots
> >> so i don't detect that how much is the true free space (without
> >> snapshots),
> >> and when the disk is out of memory. every time i feel the free space
> >> is too
> >> small, i will `snapper delete` some snapshots. but the free space of
> >> my disk
> >> still decrease inappearently.
> >
> > This is strange.
> >
> > Either the deletion is delayed and something wrong happened, they should
> > really not behave like this.
>
> BTW, since you're using snapper, maybe it has already enabled qgroup.
>
> With qgroup, it has some pretty good indication of real space used by
> certain subvolume.
> This number includes the extent booking, which would be more accurate
> numbers.
>
> Also, qgroup could more or less shows the process of snapshot deletion,
> so you can check it by the following command:
>
> # btrfs qgroup show -prce </mnt>
>
> Thanks,
> Qu
>
> >
> >>
> >> about ten days ago, after one compter crash (system freeze), i press
> >> power
> >> button to try to restart it. before this time, the same thing has
> >> happened
> >> not only one time, but this time is different. after restart, the OS
> >> cannot
> >> work -- after dmesg print (these information comes from my mobile photos)
> >> ```
> >> [4.941061] BTRFS info (device sda2): disk space caching is enabled
> >> [4.941549] BTRFS info (device sda2): has skinny extents
> >> [11.937528] BTRFS info (device sda2): start tree-log replay
> >> ```
> >>
> >> after about 200 seconds, it print more information
> >> ```
> >> [259.503140] BTRFS: error (device sda2) in btrfs_replay_log:2254:
> >> errno=-22 unknown (Failed to recover log tree)
> >
> > This is not a big deal, btrfs rescue zero log should handle it without
> > problem.
> >
> >> # this line occur many times
> >> [273.XXXXXX] BTRFS warning (device sda2): page private not zero on
> >> page 85809XXXXXX
> >> [273.478984] BTRFS error (device sda2): open_ctree failed
> >> ```
> >>
> >> perhaps i should seek for help that time, but i think i should try to
> >> solve
> >> this problem by myself first to avoid disturb other one. after boot my
> >> computer from liveUSB, then I try to mount /dev/sda2, but failed. then
> >> i try
> >> to `btrfs check /dev/sda2` but not use `--repair` because `--repair`
> >> is so
> >> dangerous. it tell me some error like 100, 200, 1.
> >> i try to
> >> ```
> >> btrfs rescue chunk-recovery /dev/sda2
> >> btrfs rescue super-recovery /dev/sda2
> >> ```
> >
> > Those are a little dangerous now...
> >
> >> but still cannot mount /dev/sda2. at last,
> >> ```
> >> btrfs rescue zero-log /dev/sda2
> >> ```
> >
> > As expected, zero log should work.
> >
> >> work and i can mount /dev/sda2. then i can reboot my OS without liveUSB.
> >> after then, i use `find -inum XXX` to search that file which inode is
> >> error
> >> 100, and found they are `~/.cache/google-chrome/Default/Code\
> >> Cache/js/XXXXXX`
> >> and delete them.
> >
> > error 0x100 is inode file extent discount, it's a pretty low priority
> > thing.
> > Kernel can handle it without problem.
> >
> >>
> >> after that time, i doubt my filesystem is not normal. and try to use
> >> some du
> >> tools to scan my disk. initially i thought maybe my disk is full
> >> truly. but
> >> this is the gdu result: (these information come from my mobile photos)
> >> ```
> >> gdu ~ Use arrow keys to navigate, press ? for help
> >> --- /mnt/gentoo ---
> >>   115.3 GiB [#####     ] /.snapshots
> >>    49.8 GiB [##        ] /usr
> >>    33.4 GiB [#         ] /home
> >>    12.5 GiB [          ] /opt
> >>     9.7 GiB [          ] /var
> >>   930.8 MiB [          ] /lib
> >>    55.2 MiB [          ] /root
> >>    50.6 MiB [          ] /etc
> >>    27.1 MiB [          ] /sbin
> >>    23.5 MiB [          ] /lib64
> >>    10.1 MiB [          ] /bin
> >>     8.1 MiB [          ] /tftproot
> >>    24.0 KiB [          ] /dev
> >>    20.0 KiB [          ] /mnt
> >>    20.0 KiB [          ] /run
> >>     4.0 KiB [          ] /sys
> >> e  4.0 KiB [          ] /proc
> >> e  4.0 KiB [          ] /boot
> >> e  4.0 KiB [          ] /srv
> >> e  4.0 KiB [          ] /tmp
> >> @  4.0 KiB [          ] media
> >> Total disk usage: 221.8 GiB Apparent size: 210.7 GiB Items: 5175776
> >> Sorting by: size desc
> >> ```
> >>
> >> so i try to delete snapshots but the free space is not change almostly --
> >> maybe because they are snapshots. then i try to delete some `~/.cache`
> >> and
> >> some file to make `df -Th` have 4% free space in order to i can use my
> >> computer now.
> >
> > Snapshot deletion doesn't happen immediate.
> >
> > They just get unlinked first, and then get deleted at background.
> >
> > It's preferred to run "btrfs fi sync" to wait for all of the deletion
> > finishes, then check again.
> >
> >
> > BTW, if you are not confident about the healthy of your fs, use liveUSB
> > to run "btrfs check" on the fs and save the output.
> >
> > I don't believe it's a big deal, mostly just small (and mostly solvable)
> > problems.
> >
> >>
> >> it's almostly all the things i can remember with the remind of photos.
> >> if you
> >> want to see any other output of program, i'll do. thanks.
> >>
> >> sorry for disturbing anyone's precious time!
> >
> > Don't need to be too humble, in fact we really care what the end users
> > hits in real world, so that we can enhance btrfs.
> >
> > As long as your kernel isn't too heavily backported nor too old, we're
> > pretty happy to help.
> >
> > Thanks,
> > Qu
> >
> >>
> >> On Wed, Jun 23, 2021 at 5:33 PM Su Yue <l@damenly.su> wrote:
> >>>
> >>>
> >>> On Wed 23 Jun 2021 at 14:47, Zhenyu Wu <wuzy001@gmail.com> wrote:
> >>>
> >>> BTW if your info is not so sensitive, better to reply me and CC
> >>> linux-btrfs. Others can see your info and help you ;)
> >>>
> >>> --
> >>> Su
> >>>> Sorry for my late reply!
> >>>> thanks for your suggestion.
> >>>> ```
> >>>> $ sudo btrfs subvolume list /
> >>>> ID 7501 gen 942958 top level 5 path srv
> >>>> ID 7502 gen 942959 top level 5 path var/lib/portables
> >>>> ID 7503 gen 942960 top level 5 path var/lib/machines
> >>>> ```
> >>>>
> >>>> these directories are all empty. however, if i delete them:
> >>>>
> >>>> ```
> >>>> $ sudo btrfs subvolume delete
> >>>> {/srv,/var/lib/portables,/var/lib/machines}
> >>>> Delete subvolume (no-commit): '//srv'
> >>>> Delete subvolume (no-commit): '/var/lib/portables'
> >>>> Delete subvolume (no-commit): '/var/lib/machines'
> >>>> ```
> >>>>
> >>>> when i reboot, these will occur again. i believe there exists
> >>>> some
> >>>> autostart script to create these subvolumes.
> >>>>
> >>>> i don't know whether this is the true reason. how can i do to
> >>>> solve
> >>>> this problem?
> >>>>
> >>>> thanks!
> >>>>
> >>>> On Tue, Jun 22, 2021 at 10:33 PM Su Yue <l@damenly.su> wrote:
> >>>>>
> >>>>>
> >>>>> On Tue 22 Jun 2021 at 21:02, Zhenyu Wu <wuzy001@gmail.com> wrote:
> >>>>>
> >>>>>> Sorry for my disturbance!
> >>>>>>
> >>>>>> my disk with btrfs filesystem tell me it doesn't have enough
> >>>>>> free space:
> >>>>>>
> >>>>>> ```
> >>>>>> $ sudo btrfs fi df /
> >>>>>> Data, single: total=448.02GiB, used=427.74GiB
> >>>>>> System, DUP: total=8.00MiB, used=64.00KiB
> >>>>>> Metadata, DUP: total=8.80GiB, used=6.39GiB
> >>>>>> GlobalReserve, single: total=512.00MiB, used=0.00B
> >>>>>> $ sudo btrfs fi usage /
> >>>>>> Overall:
> >>>>>>      Device size:                 465.64GiB
> >>>>>>      Device allocated:            465.63GiB
> >>>>>>      Device unallocated:            1.00MiB
> >>>>>>      Device missing:                  0.00B
> >>>>>>      Used:                        440.54GiB
> >>>>>>      Free (estimated):             20.26GiB      (min:
> >>>>>>      20.26GiB)
> >>>>>>      Data ratio:                       1.00
> >>>>>>      Metadata ratio:                   2.00
> >>>>>>      Global reserve:              512.00MiB      (used: 0.00B)
> >>>>>>      Multiple profiles:                  no
> >>>>>>
> >>>>>> Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
> >>>>>>     /dev/sda2     448.02GiB
> >>>>>>
> >>>>>> Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
> >>>>>>     /dev/sda2      17.60GiB
> >>>>>>
> >>>>>> System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
> >>>>>>     /dev/sda2      16.00MiB
> >>>>>>
> >>>>>> Unallocated:
> >>>>>>     /dev/sda2       1.00MiB
> >>>>>> $ sudo btrfs fi show /
> >>>>>> Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >>>>>>          Total devices 1 FS bytes used 434.14GiB
> >>>>>>          devid    1 size 465.64GiB used 465.63GiB path
> >>>>>>          /dev/sda2
> >>>>>>
> >>>>>> $ df -Th
> >>>>>> Filesystem     Type      Size  Used Avail Use% Mounted on
> >>>>>> devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
> >>>>>> tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
> >>>>>> tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
> >>>>>> /dev/sda2      btrfs     466G  442G   21G  96% /
> >>>>>> tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
> >>>>>> /dev/sda1      vfat      128M  125M  2.9M  98% /boot
> >>>>>> tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
> >>>>>> tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
> >>>>>> ```
> >>>>>>
> >>>>>> however, i try to use gdu to scan my disk. it tell me
> >>>>>>
> >>>>>> ```
> >>>>>> $ sudo gdu /
> >>>>>>   gdu ~ Use arrow keys to navigate, press ? for help
> >>>>>>   --- / ---
> >>>>>>     49.9 GiB [#####     ] /usr
> >>>>>>     15.1 GiB [#         ] /home
> >>>>>>     11.1 GiB [#         ] /opt
> >>>>>>      6.5 GiB [          ] /var
> >>>>>>    930.8 MiB [          ] /lib
> >>>>>>    124.9 MiB [          ] /boot
> >>>>>>     55.2 MiB [          ] /root
> >>>>>>     50.6 MiB [          ] /etc
> >>>>>>     27.1 MiB [          ] /sbin
> >>>>>>     23.5 MiB [          ] /lib64
> >>>>>>     10.9 MiB [          ] /bin
> >>>>>> . 312.0 KiB [          ] /tmp
> >>>>>>     20.0 KiB [          ] /mnt
> >>>>>> e   4.0 KiB [          ] /srv
> >>>>>> e   4.0 KiB [          ] /tftproot
> >>>>>> @   4.0 KiB [          ] media
> >>>>>>   Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items:
> >>>>>>   2424046
> >>>>>> Sorting by: size desc
> >>>>>> ```
> >>>>>>
> >>>>>> 427.76GiB or 83.8 GiB!
> >>>>>>
> >>>>> Maybe your fs have some snapshots?
> >>>>> Try:
> >>>>>
> >>>>> btrfs subvolume list /
> >>>>>
> >>>>> --
> >>>>> Su
> >>>>>
> >>>>>> i know btrfs is a CoW filesystem, which means it will cost
> >>>>>> more
> >>>>>> space
> >>>>>> to store a file. but the gap is too large, which it is hard
> >>>>>> to
> >>>>>> accept
> >>>>>> the fact.
> >>>>>> who can tell me what happened to my disk? and how can i do to
> >>>>>> rescue
> >>>>>> my hard disk? the rest free space is not enough. if i cannot
> >>>>>> find the
> >>>>>> solution, maybe i should format my hard disk to get more free
> >>>>>> space.
> >>>>>> thanks.
> >>>>>>
> >>>>>> there are some information which maybe useful.
> >>>>>>
> >>>>>> ```
> >>>>>> $ uname -r
> >>>>>> 5.11.7-gentoo-x86_64
> >>>>>> $ btrfs --version
> >>>>>> btrfs-progs v5.9
> >>>>>> $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
> >>>>>> Pasting > 25 kB often tend to fail with dpaste. Use --verbose
> >>>>>> or
> >>>>>> --debug to see the
> >>>>>> error output from wget if it fails. Alternatively use another
> >>>>>> pastebin service.
> >>>>>> Your paste can be seen here: https://dpaste.com/FCZF83YYA
> >>>>>> ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24  7:45             ` Zhenyu Wu
@ 2021-06-24  7:54               ` Qu Wenruo
  2021-06-24  8:32               ` Graham Cobb
  1 sibling, 0 replies; 24+ messages in thread
From: Qu Wenruo @ 2021-06-24  7:54 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Su Yue, linux-btrfs



On 2021/6/24 下午3:45, Zhenyu Wu wrote:
> Thanks! this is some information of some programs.
> ```
> # boot from liveUSB
> $ btrfs check /dev/sda2
> [1/7] checking root items
> [2/7] checking extents
> [3/7] checking free space cache
> [4/7] checking fs roots
> [5/7] checking only csums items (without verifying data)
> [6/7] checking root refs
> [7/7] checking quota groups
> # after mount /dev/sda2 to /mnt/gentoo

Your fs is completely fine, pretty good news.

> $ btrfs fi sync /mnt/gentoo
> # no output
> ```
>
> ```
> # normal boot
> $ sudo btrfs qoata rescan /
> $ sudo btrfs qgroup show -pcre /
> qgroupid         rfer         excl     max_rfer     max_excl parent   child
> --------         ----         ----     --------     -------- ------   -----
> 0/5          81.23GiB      6.90GiB         none         none ---      ---
> 0/265           0.00B        0.00B         none         none ---      ---
> 0/266           0.00B        0.00B         none         none ---      ---
> 0/267           0.00B        0.00B         none         none ---      ---
> 0/6482          0.00B        0.00B         none         none ---      ---
> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
> 1/0             0.00B        0.00B         none         none ---      ---
> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
> ```
> i don't know why these qgroups exist because they are not created by me...

Not a big deal, snapper is known to create qgroup by default.

Considering it's using multi-level qgroup, the number may not be
uptodate, you may want to rescan the qgroup, by "btrfs quota rescan -w
<mnt>"
Then it should be able to give you a complete view of which subvolume is
taking up space.

After above rescan, you should be able to see which subvolume is really
taking up your space.

Things like subvolume 7501/7502/7503 look suspicious, I gess after
rescan it would be pretty large and then you can go and delete them.

Considering the 255 level qgroup is mostly created by snapper, you may
want to dig deeper why these snapshots are created.

Thanks,
Qu
>
> the result of `btrfs check` looks like now there is not any error in
> filesystem. but i still want to know where does the free space go and
> how to inrease them?
>
> out of memory is a typo. sorry:(
>
> sorry for late, `btrfs check` costs a very long time.
>
> On Wed, Jun 23, 2021 at 8:08 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>
>>
>>
>> On 2021/6/23 下午8:00, Qu Wenruo wrote:
>>>
>>>
>>> On 2021/6/23 下午7:46, 吴振宇 wrote:
>>>> Thanks for your tips! i forgot to CC linux-btrfs when reply you. sorry.
>>>>
>>>> i believe this problem which my disk is out of memory does not occur
>>>
>>> By "out of memory" I guess you mean "out of space"?
>>>
>>>> suddenly. before i notice this problem, i use snapper with its default
>>>> config
>>>> to make snapshot for my btrfs filesystem. snapper will create many
>>>> snapshots
>>>> so i don't detect that how much is the true free space (without
>>>> snapshots),
>>>> and when the disk is out of memory. every time i feel the free space
>>>> is too
>>>> small, i will `snapper delete` some snapshots. but the free space of
>>>> my disk
>>>> still decrease inappearently.
>>>
>>> This is strange.
>>>
>>> Either the deletion is delayed and something wrong happened, they should
>>> really not behave like this.
>>
>> BTW, since you're using snapper, maybe it has already enabled qgroup.
>>
>> With qgroup, it has some pretty good indication of real space used by
>> certain subvolume.
>> This number includes the extent booking, which would be more accurate
>> numbers.
>>
>> Also, qgroup could more or less shows the process of snapshot deletion,
>> so you can check it by the following command:
>>
>> # btrfs qgroup show -prce </mnt>
>>
>> Thanks,
>> Qu
>>
>>>
>>>>
>>>> about ten days ago, after one compter crash (system freeze), i press
>>>> power
>>>> button to try to restart it. before this time, the same thing has
>>>> happened
>>>> not only one time, but this time is different. after restart, the OS
>>>> cannot
>>>> work -- after dmesg print (these information comes from my mobile photos)
>>>> ```
>>>> [4.941061] BTRFS info (device sda2): disk space caching is enabled
>>>> [4.941549] BTRFS info (device sda2): has skinny extents
>>>> [11.937528] BTRFS info (device sda2): start tree-log replay
>>>> ```
>>>>
>>>> after about 200 seconds, it print more information
>>>> ```
>>>> [259.503140] BTRFS: error (device sda2) in btrfs_replay_log:2254:
>>>> errno=-22 unknown (Failed to recover log tree)
>>>
>>> This is not a big deal, btrfs rescue zero log should handle it without
>>> problem.
>>>
>>>> # this line occur many times
>>>> [273.XXXXXX] BTRFS warning (device sda2): page private not zero on
>>>> page 85809XXXXXX
>>>> [273.478984] BTRFS error (device sda2): open_ctree failed
>>>> ```
>>>>
>>>> perhaps i should seek for help that time, but i think i should try to
>>>> solve
>>>> this problem by myself first to avoid disturb other one. after boot my
>>>> computer from liveUSB, then I try to mount /dev/sda2, but failed. then
>>>> i try
>>>> to `btrfs check /dev/sda2` but not use `--repair` because `--repair`
>>>> is so
>>>> dangerous. it tell me some error like 100, 200, 1.
>>>> i try to
>>>> ```
>>>> btrfs rescue chunk-recovery /dev/sda2
>>>> btrfs rescue super-recovery /dev/sda2
>>>> ```
>>>
>>> Those are a little dangerous now...
>>>
>>>> but still cannot mount /dev/sda2. at last,
>>>> ```
>>>> btrfs rescue zero-log /dev/sda2
>>>> ```
>>>
>>> As expected, zero log should work.
>>>
>>>> work and i can mount /dev/sda2. then i can reboot my OS without liveUSB.
>>>> after then, i use `find -inum XXX` to search that file which inode is
>>>> error
>>>> 100, and found they are `~/.cache/google-chrome/Default/Code\
>>>> Cache/js/XXXXXX`
>>>> and delete them.
>>>
>>> error 0x100 is inode file extent discount, it's a pretty low priority
>>> thing.
>>> Kernel can handle it without problem.
>>>
>>>>
>>>> after that time, i doubt my filesystem is not normal. and try to use
>>>> some du
>>>> tools to scan my disk. initially i thought maybe my disk is full
>>>> truly. but
>>>> this is the gdu result: (these information come from my mobile photos)
>>>> ```
>>>> gdu ~ Use arrow keys to navigate, press ? for help
>>>> --- /mnt/gentoo ---
>>>>    115.3 GiB [#####     ] /.snapshots
>>>>     49.8 GiB [##        ] /usr
>>>>     33.4 GiB [#         ] /home
>>>>     12.5 GiB [          ] /opt
>>>>      9.7 GiB [          ] /var
>>>>    930.8 MiB [          ] /lib
>>>>     55.2 MiB [          ] /root
>>>>     50.6 MiB [          ] /etc
>>>>     27.1 MiB [          ] /sbin
>>>>     23.5 MiB [          ] /lib64
>>>>     10.1 MiB [          ] /bin
>>>>      8.1 MiB [          ] /tftproot
>>>>     24.0 KiB [          ] /dev
>>>>     20.0 KiB [          ] /mnt
>>>>     20.0 KiB [          ] /run
>>>>      4.0 KiB [          ] /sys
>>>> e  4.0 KiB [          ] /proc
>>>> e  4.0 KiB [          ] /boot
>>>> e  4.0 KiB [          ] /srv
>>>> e  4.0 KiB [          ] /tmp
>>>> @  4.0 KiB [          ] media
>>>> Total disk usage: 221.8 GiB Apparent size: 210.7 GiB Items: 5175776
>>>> Sorting by: size desc
>>>> ```
>>>>
>>>> so i try to delete snapshots but the free space is not change almostly --
>>>> maybe because they are snapshots. then i try to delete some `~/.cache`
>>>> and
>>>> some file to make `df -Th` have 4% free space in order to i can use my
>>>> computer now.
>>>
>>> Snapshot deletion doesn't happen immediate.
>>>
>>> They just get unlinked first, and then get deleted at background.
>>>
>>> It's preferred to run "btrfs fi sync" to wait for all of the deletion
>>> finishes, then check again.
>>>
>>>
>>> BTW, if you are not confident about the healthy of your fs, use liveUSB
>>> to run "btrfs check" on the fs and save the output.
>>>
>>> I don't believe it's a big deal, mostly just small (and mostly solvable)
>>> problems.
>>>
>>>>
>>>> it's almostly all the things i can remember with the remind of photos.
>>>> if you
>>>> want to see any other output of program, i'll do. thanks.
>>>>
>>>> sorry for disturbing anyone's precious time!
>>>
>>> Don't need to be too humble, in fact we really care what the end users
>>> hits in real world, so that we can enhance btrfs.
>>>
>>> As long as your kernel isn't too heavily backported nor too old, we're
>>> pretty happy to help.
>>>
>>> Thanks,
>>> Qu
>>>
>>>>
>>>> On Wed, Jun 23, 2021 at 5:33 PM Su Yue <l@damenly.su> wrote:
>>>>>
>>>>>
>>>>> On Wed 23 Jun 2021 at 14:47, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>>>>
>>>>> BTW if your info is not so sensitive, better to reply me and CC
>>>>> linux-btrfs. Others can see your info and help you ;)
>>>>>
>>>>> --
>>>>> Su
>>>>>> Sorry for my late reply!
>>>>>> thanks for your suggestion.
>>>>>> ```
>>>>>> $ sudo btrfs subvolume list /
>>>>>> ID 7501 gen 942958 top level 5 path srv
>>>>>> ID 7502 gen 942959 top level 5 path var/lib/portables
>>>>>> ID 7503 gen 942960 top level 5 path var/lib/machines
>>>>>> ```
>>>>>>
>>>>>> these directories are all empty. however, if i delete them:
>>>>>>
>>>>>> ```
>>>>>> $ sudo btrfs subvolume delete
>>>>>> {/srv,/var/lib/portables,/var/lib/machines}
>>>>>> Delete subvolume (no-commit): '//srv'
>>>>>> Delete subvolume (no-commit): '/var/lib/portables'
>>>>>> Delete subvolume (no-commit): '/var/lib/machines'
>>>>>> ```
>>>>>>
>>>>>> when i reboot, these will occur again. i believe there exists
>>>>>> some
>>>>>> autostart script to create these subvolumes.
>>>>>>
>>>>>> i don't know whether this is the true reason. how can i do to
>>>>>> solve
>>>>>> this problem?
>>>>>>
>>>>>> thanks!
>>>>>>
>>>>>> On Tue, Jun 22, 2021 at 10:33 PM Su Yue <l@damenly.su> wrote:
>>>>>>>
>>>>>>>
>>>>>>> On Tue 22 Jun 2021 at 21:02, Zhenyu Wu <wuzy001@gmail.com> wrote:
>>>>>>>
>>>>>>>> Sorry for my disturbance!
>>>>>>>>
>>>>>>>> my disk with btrfs filesystem tell me it doesn't have enough
>>>>>>>> free space:
>>>>>>>>
>>>>>>>> ```
>>>>>>>> $ sudo btrfs fi df /
>>>>>>>> Data, single: total=448.02GiB, used=427.74GiB
>>>>>>>> System, DUP: total=8.00MiB, used=64.00KiB
>>>>>>>> Metadata, DUP: total=8.80GiB, used=6.39GiB
>>>>>>>> GlobalReserve, single: total=512.00MiB, used=0.00B
>>>>>>>> $ sudo btrfs fi usage /
>>>>>>>> Overall:
>>>>>>>>       Device size:                 465.64GiB
>>>>>>>>       Device allocated:            465.63GiB
>>>>>>>>       Device unallocated:            1.00MiB
>>>>>>>>       Device missing:                  0.00B
>>>>>>>>       Used:                        440.54GiB
>>>>>>>>       Free (estimated):             20.26GiB      (min:
>>>>>>>>       20.26GiB)
>>>>>>>>       Data ratio:                       1.00
>>>>>>>>       Metadata ratio:                   2.00
>>>>>>>>       Global reserve:              512.00MiB      (used: 0.00B)
>>>>>>>>       Multiple profiles:                  no
>>>>>>>>
>>>>>>>> Data,single: Size:448.02GiB, Used:427.76GiB (95.48%)
>>>>>>>>      /dev/sda2     448.02GiB
>>>>>>>>
>>>>>>>> Metadata,DUP: Size:8.80GiB, Used:6.39GiB (72.60%)
>>>>>>>>      /dev/sda2      17.60GiB
>>>>>>>>
>>>>>>>> System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
>>>>>>>>      /dev/sda2      16.00MiB
>>>>>>>>
>>>>>>>> Unallocated:
>>>>>>>>      /dev/sda2       1.00MiB
>>>>>>>> $ sudo btrfs fi show /
>>>>>>>> Label: none  uuid: 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>>>>>>           Total devices 1 FS bytes used 434.14GiB
>>>>>>>>           devid    1 size 465.64GiB used 465.63GiB path
>>>>>>>>           /dev/sda2
>>>>>>>>
>>>>>>>> $ df -Th
>>>>>>>> Filesystem     Type      Size  Used Avail Use% Mounted on
>>>>>>>> devtmpfs       devtmpfs  3.8G     0  3.8G   0% /dev
>>>>>>>> tmpfs          tmpfs     3.9G   46M  3.8G   2% /dev/shm
>>>>>>>> tmpfs          tmpfs     3.9G  3.9M  3.9G   1% /run
>>>>>>>> /dev/sda2      btrfs     466G  442G   21G  96% /
>>>>>>>> tmpfs          tmpfs     3.9G  204K  3.9G   1% /tmp
>>>>>>>> /dev/sda1      vfat      128M  125M  2.9M  98% /boot
>>>>>>>> tmpfs          tmpfs     785M   16K  785M   1% /run/user/994
>>>>>>>> tmpfs          tmpfs     785M   80K  785M   1% /run/user/1000
>>>>>>>> ```
>>>>>>>>
>>>>>>>> however, i try to use gdu to scan my disk. it tell me
>>>>>>>>
>>>>>>>> ```
>>>>>>>> $ sudo gdu /
>>>>>>>>    gdu ~ Use arrow keys to navigate, press ? for help
>>>>>>>>    --- / ---
>>>>>>>>      49.9 GiB [#####     ] /usr
>>>>>>>>      15.1 GiB [#         ] /home
>>>>>>>>      11.1 GiB [#         ] /opt
>>>>>>>>       6.5 GiB [          ] /var
>>>>>>>>     930.8 MiB [          ] /lib
>>>>>>>>     124.9 MiB [          ] /boot
>>>>>>>>      55.2 MiB [          ] /root
>>>>>>>>      50.6 MiB [          ] /etc
>>>>>>>>      27.1 MiB [          ] /sbin
>>>>>>>>      23.5 MiB [          ] /lib64
>>>>>>>>      10.9 MiB [          ] /bin
>>>>>>>> . 312.0 KiB [          ] /tmp
>>>>>>>>      20.0 KiB [          ] /mnt
>>>>>>>> e   4.0 KiB [          ] /srv
>>>>>>>> e   4.0 KiB [          ] /tftproot
>>>>>>>> @   4.0 KiB [          ] media
>>>>>>>>    Total disk usage: 83.8 GiB Apparent size: 78.4 GiB Items:
>>>>>>>>    2424046
>>>>>>>> Sorting by: size desc
>>>>>>>> ```
>>>>>>>>
>>>>>>>> 427.76GiB or 83.8 GiB!
>>>>>>>>
>>>>>>> Maybe your fs have some snapshots?
>>>>>>> Try:
>>>>>>>
>>>>>>> btrfs subvolume list /
>>>>>>>
>>>>>>> --
>>>>>>> Su
>>>>>>>
>>>>>>>> i know btrfs is a CoW filesystem, which means it will cost
>>>>>>>> more
>>>>>>>> space
>>>>>>>> to store a file. but the gap is too large, which it is hard
>>>>>>>> to
>>>>>>>> accept
>>>>>>>> the fact.
>>>>>>>> who can tell me what happened to my disk? and how can i do to
>>>>>>>> rescue
>>>>>>>> my hard disk? the rest free space is not enough. if i cannot
>>>>>>>> find the
>>>>>>>> solution, maybe i should format my hard disk to get more free
>>>>>>>> space.
>>>>>>>> thanks.
>>>>>>>>
>>>>>>>> there are some information which maybe useful.
>>>>>>>>
>>>>>>>> ```
>>>>>>>> $ uname -r
>>>>>>>> 5.11.7-gentoo-x86_64
>>>>>>>> $ btrfs --version
>>>>>>>> btrfs-progs v5.9
>>>>>>>> $ dmesg > dmesg.txt && wgetpaste -s dpaste dmesg.txt
>>>>>>>> Pasting > 25 kB often tend to fail with dpaste. Use --verbose
>>>>>>>> or
>>>>>>>> --debug to see the
>>>>>>>> error output from wget if it fails. Alternatively use another
>>>>>>>> pastebin service.
>>>>>>>> Your paste can be seen here: https://dpaste.com/FCZF83YYA
>>>>>>>> ```

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24  7:45             ` Zhenyu Wu
  2021-06-24  7:54               ` Qu Wenruo
@ 2021-06-24  8:32               ` Graham Cobb
  2021-06-24  9:52                 ` Zhenyu Wu
  1 sibling, 1 reply; 24+ messages in thread
From: Graham Cobb @ 2021-06-24  8:32 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Su Yue, linux-btrfs, Qu Wenruo

On 24/06/2021 08:45, Zhenyu Wu wrote:
> Thanks! this is some information of some programs.
> ```
> # boot from liveUSB
> $ btrfs check /dev/sda2
> [1/7] checking root items
> [2/7] checking extents
> [3/7] checking free space cache
> [4/7] checking fs roots
> [5/7] checking only csums items (without verifying data)
> [6/7] checking root refs
> [7/7] checking quota groups
> # after mount /dev/sda2 to /mnt/gentoo

Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
can see all subvolumes, not just the default subvolume? I guess it
doesn't matter for quota, but it matters if you are using tools like du.

You don't even need to use a liveUSB. On your normal mounted system you
can do...

mkdir /tmp/fulldisk
mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
ls -lA /tmp/fulldisk

to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24  8:32               ` Graham Cobb
@ 2021-06-24  9:52                 ` Zhenyu Wu
  2021-06-24 10:07                   ` Qu Wenruo
  0 siblings, 1 reply; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-24  9:52 UTC (permalink / raw)
  To: Graham Cobb; +Cc: Su Yue, linux-btrfs, Qu Wenruo

i have rescan quota but it looks like nothing change...
```
$ sudo btrfs quota rescan -w /
quota rescan started
# after 8m39s
$ sudo btrfs qgroup show -pcre /
qgroupid         rfer         excl     max_rfer     max_excl parent   child
--------         ----         ----     --------     -------- ------   -----
0/5          81.23GiB      6.89GiB         none         none ---      ---
0/265           0.00B        0.00B         none         none ---      ---
0/266           0.00B        0.00B         none         none ---      ---
0/267           0.00B        0.00B         none         none ---      ---
0/6482          0.00B        0.00B         none         none ---      ---
0/7501       16.00KiB     16.00KiB         none         none ---      ---
0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
1/0             0.00B        0.00B         none         none ---      ---
255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
```

and i try to mount with option subvolid:
```
$ mkdir /tmp/fulldisk
$ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
$ ls -lA /tmp/fulldisk
total 4
drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
drwxr-xr-x 1 root   root     22 Oct 17  2020 home
drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
drwxr-xr-x 1 root   root     48 May 30 14:14 run
drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
$ sudo btrfs fi du -s /tmp/fulldisk/*
     Total   Exclusive  Set shared  Filename
  10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
     0.00B       0.00B       0.00B  /tmp/fulldisk/boot
     0.00B       0.00B       0.00B  /tmp/fulldisk/dev
  33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
  13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
 922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
  23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
ioctl for device
     0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
  11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
     0.00B       0.00B       0.00B  /tmp/fulldisk/proc
  40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
     0.00B       0.00B       0.00B  /tmp/fulldisk/run
  26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
     0.00B       0.00B       0.00B  /tmp/fulldisk/sys
     0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
     0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
  47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
   5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
```

because media is a symbolic link so the ERROR should be normal.
according to `btrfs fi du` it looks like i only use about 80GiB. it is
too weird.
thanks!

On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
>
> On 24/06/2021 08:45, Zhenyu Wu wrote:
> > Thanks! this is some information of some programs.
> > ```
> > # boot from liveUSB
> > $ btrfs check /dev/sda2
> > [1/7] checking root items
> > [2/7] checking extents
> > [3/7] checking free space cache
> > [4/7] checking fs roots
> > [5/7] checking only csums items (without verifying data)
> > [6/7] checking root refs
> > [7/7] checking quota groups
> > # after mount /dev/sda2 to /mnt/gentoo
>
> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
> can see all subvolumes, not just the default subvolume? I guess it
> doesn't matter for quota, but it matters if you are using tools like du.
>
> You don't even need to use a liveUSB. On your normal mounted system you
> can do...
>
> mkdir /tmp/fulldisk
> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> ls -lA /tmp/fulldisk
>
> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24  9:52                 ` Zhenyu Wu
@ 2021-06-24 10:07                   ` Qu Wenruo
  2021-06-24 11:33                     ` Zhenyu Wu
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-24 10:07 UTC (permalink / raw)
  To: Zhenyu Wu, Graham Cobb; +Cc: Su Yue, linux-btrfs



On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> i have rescan quota but it looks like nothing change...
> ```
> $ sudo btrfs quota rescan -w /
> quota rescan started
> # after 8m39s
> $ sudo btrfs qgroup show -pcre /
> qgroupid         rfer         excl     max_rfer     max_excl parent   child
> --------         ----         ----     --------     -------- ------   -----
> 0/5          81.23GiB      6.89GiB         none         none ---      ---
> 0/265           0.00B        0.00B         none         none ---      ---
> 0/266           0.00B        0.00B         none         none ---      ---
> 0/267           0.00B        0.00B         none         none ---      ---
> 0/6482          0.00B        0.00B         none         none ---      ---
> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---

This is now getting super weird now.

Firstly, if there are some snapshots of subvolume 5, it should show up
here, with size over several GiB.

Thus there seems to be some ghost/hidden subvolumes that even don't show
up in qgroup.

It's possible that some qgroup is intentionally deleted, thus not being
properly updated.

For that case, you may want to disable qgroup, re-enable, then do a
rescan: (Can all be done on the running system)

# btrfs quota disable <mnt>
# btrfs quota enable <mnt>
# btrfs quota rescan -w <mnt>

Then provide the output of 'btrfs qgroup show -prce <mnt>"

If the output doesn't change at all, after the full 10min rescan, then I
guess you have to dump the root tree, along with the data_reloc tree.

# btrfs ins dump-tree -t root <device>
# btrfs ins dump-tree -t data_reloc <device>

Thanks,
Qu
> 1/0             0.00B        0.00B         none         none ---      ---
> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
> ```
>
> and i try to mount with option subvolid:
> ```
> $ mkdir /tmp/fulldisk
> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> $ ls -lA /tmp/fulldisk
> total 4
> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> $ sudo btrfs fi du -s /tmp/fulldisk/*
>       Total   Exclusive  Set shared  Filename
>    10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>       0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>       0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>    33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>    13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>   922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>    23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> ioctl for device
>       0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>    11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>       0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>    40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>       0.00B       0.00B       0.00B  /tmp/fulldisk/run
>    26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>       0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>       0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>       0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>    47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>     5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> ```
>
> because media is a symbolic link so the ERROR should be normal.
> according to `btrfs fi du` it looks like i only use about 80GiB. it is
> too weird.
> thanks!
>
> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
>>
>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>> Thanks! this is some information of some programs.
>>> ```
>>> # boot from liveUSB
>>> $ btrfs check /dev/sda2
>>> [1/7] checking root items
>>> [2/7] checking extents
>>> [3/7] checking free space cache
>>> [4/7] checking fs roots
>>> [5/7] checking only csums items (without verifying data)
>>> [6/7] checking root refs
>>> [7/7] checking quota groups
>>> # after mount /dev/sda2 to /mnt/gentoo
>>
>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
>> can see all subvolumes, not just the default subvolume? I guess it
>> doesn't matter for quota, but it matters if you are using tools like du.
>>
>> You don't even need to use a liveUSB. On your normal mounted system you
>> can do...
>>
>> mkdir /tmp/fulldisk
>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>> ls -lA /tmp/fulldisk
>>
>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 10:07                   ` Qu Wenruo
@ 2021-06-24 11:33                     ` Zhenyu Wu
  2021-06-24 12:30                       ` Qu Wenruo
  0 siblings, 1 reply; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-24 11:33 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

the output has changed. do i need `btrfs ins dump-tree -t root`?
```
$ sudo btrfs quota disable /
$ sudo btrfs quota enable /
$ sudo btrfs quota rescan -w /
# after 22m11s
$ sudo btrfs qgroup show -pcre /
qgroupid         rfer         excl     max_rfer     max_excl parent  child
--------         ----         ----     --------     -------- ------  -----
0/5          81.23GiB      6.90GiB         none         none ---     ---
```
thanks!

On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> > i have rescan quota but it looks like nothing change...
> > ```
> > $ sudo btrfs quota rescan -w /
> > quota rescan started
> > # after 8m39s
> > $ sudo btrfs qgroup show -pcre /
> > qgroupid         rfer         excl     max_rfer     max_excl parent   child
> > --------         ----         ----     --------     -------- ------   -----
> > 0/5          81.23GiB      6.89GiB         none         none ---      ---
> > 0/265           0.00B        0.00B         none         none ---      ---
> > 0/266           0.00B        0.00B         none         none ---      ---
> > 0/267           0.00B        0.00B         none         none ---      ---
> > 0/6482          0.00B        0.00B         none         none ---      ---
> > 0/7501       16.00KiB     16.00KiB         none         none ---      ---
> > 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
> > 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
>
> This is now getting super weird now.
>
> Firstly, if there are some snapshots of subvolume 5, it should show up
> here, with size over several GiB.
>
> Thus there seems to be some ghost/hidden subvolumes that even don't show
> up in qgroup.
>
> It's possible that some qgroup is intentionally deleted, thus not being
> properly updated.
>
> For that case, you may want to disable qgroup, re-enable, then do a
> rescan: (Can all be done on the running system)
>
> # btrfs quota disable <mnt>
> # btrfs quota enable <mnt>
> # btrfs quota rescan -w <mnt>
>
> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>
> If the output doesn't change at all, after the full 10min rescan, then I
> guess you have to dump the root tree, along with the data_reloc tree.
>
> # btrfs ins dump-tree -t root <device>
> # btrfs ins dump-tree -t data_reloc <device>
>
> Thanks,
> Qu
> > 1/0             0.00B        0.00B         none         none ---      ---
> > 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
> > 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
> > ```
> >
> > and i try to mount with option subvolid:
> > ```
> > $ mkdir /tmp/fulldisk
> > $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> > $ ls -lA /tmp/fulldisk
> > total 4
> > drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> > drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> > drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> > drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> > drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> > drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> > drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> > lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> > drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> > drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> > drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> > drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> > drwxr-xr-x 1 root   root     48 May 30 14:14 run
> > drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> > drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> > drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> > drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> > drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> > drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> > $ sudo btrfs fi du -s /tmp/fulldisk/*
> >       Total   Exclusive  Set shared  Filename
> >    10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> >    33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> >    13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> >   922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> >    23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> > ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> > ioctl for device
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> >    11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> >    40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/run
> >    26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> >       0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> >    47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> >     5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> > ```
> >
> > because media is a symbolic link so the ERROR should be normal.
> > according to `btrfs fi du` it looks like i only use about 80GiB. it is
> > too weird.
> > thanks!
> >
> > On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
> >>
> >> On 24/06/2021 08:45, Zhenyu Wu wrote:
> >>> Thanks! this is some information of some programs.
> >>> ```
> >>> # boot from liveUSB
> >>> $ btrfs check /dev/sda2
> >>> [1/7] checking root items
> >>> [2/7] checking extents
> >>> [3/7] checking free space cache
> >>> [4/7] checking fs roots
> >>> [5/7] checking only csums items (without verifying data)
> >>> [6/7] checking root refs
> >>> [7/7] checking quota groups
> >>> # after mount /dev/sda2 to /mnt/gentoo
> >>
> >> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
> >> can see all subvolumes, not just the default subvolume? I guess it
> >> doesn't matter for quota, but it matters if you are using tools like du.
> >>
> >> You don't even need to use a liveUSB. On your normal mounted system you
> >> can do...
> >>
> >> mkdir /tmp/fulldisk
> >> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >> ls -lA /tmp/fulldisk
> >>
> >> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 11:33                     ` Zhenyu Wu
@ 2021-06-24 12:30                       ` Qu Wenruo
  2021-06-24 14:38                         ` Zhenyu Wu
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-24 12:30 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> the output has changed. do i need `btrfs ins dump-tree -t root`?
> ```
> $ sudo btrfs quota disable /
> $ sudo btrfs quota enable /
> $ sudo btrfs quota rescan -w /
> # after 22m11s
> $ sudo btrfs qgroup show -pcre /
> qgroupid         rfer         excl     max_rfer     max_excl parent  child
> --------         ----         ----     --------     -------- ------  -----
> 0/5          81.23GiB      6.90GiB         none         none ---     ---
> ```
> thanks!

Yes, dump tree output for both root and data_reloc is needed.

There may be a larger dump needed, "btrfs ins dump-tree -t extent
<device>", as I guess there is some ghost trees not properly deleted at
all...

The whole thing is going crazy now.

Thanks,
Qu
>
> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>
>>
>>
>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>> i have rescan quota but it looks like nothing change...
>>> ```
>>> $ sudo btrfs quota rescan -w /
>>> quota rescan started
>>> # after 8m39s
>>> $ sudo btrfs qgroup show -pcre /
>>> qgroupid         rfer         excl     max_rfer     max_excl parent   child
>>> --------         ----         ----     --------     -------- ------   -----
>>> 0/5          81.23GiB      6.89GiB         none         none ---      ---
>>> 0/265           0.00B        0.00B         none         none ---      ---
>>> 0/266           0.00B        0.00B         none         none ---      ---
>>> 0/267           0.00B        0.00B         none         none ---      ---
>>> 0/6482          0.00B        0.00B         none         none ---      ---
>>> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
>>> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
>>> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
>>
>> This is now getting super weird now.
>>
>> Firstly, if there are some snapshots of subvolume 5, it should show up
>> here, with size over several GiB.
>>
>> Thus there seems to be some ghost/hidden subvolumes that even don't show
>> up in qgroup.
>>
>> It's possible that some qgroup is intentionally deleted, thus not being
>> properly updated.
>>
>> For that case, you may want to disable qgroup, re-enable, then do a
>> rescan: (Can all be done on the running system)
>>
>> # btrfs quota disable <mnt>
>> # btrfs quota enable <mnt>
>> # btrfs quota rescan -w <mnt>
>>
>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>
>> If the output doesn't change at all, after the full 10min rescan, then I
>> guess you have to dump the root tree, along with the data_reloc tree.
>>
>> # btrfs ins dump-tree -t root <device>
>> # btrfs ins dump-tree -t data_reloc <device>
>>
>> Thanks,
>> Qu
>>> 1/0             0.00B        0.00B         none         none ---      ---
>>> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
>>> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
>>> ```
>>>
>>> and i try to mount with option subvolid:
>>> ```
>>> $ mkdir /tmp/fulldisk
>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>> $ ls -lA /tmp/fulldisk
>>> total 4
>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>        Total   Exclusive  Set shared  Filename
>>>     10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>     33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>     13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>    922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>     23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>> ioctl for device
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>     11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>     40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>     26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>     47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>      5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>> ```
>>>
>>> because media is a symbolic link so the ERROR should be normal.
>>> according to `btrfs fi du` it looks like i only use about 80GiB. it is
>>> too weird.
>>> thanks!
>>>
>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
>>>>
>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>> Thanks! this is some information of some programs.
>>>>> ```
>>>>> # boot from liveUSB
>>>>> $ btrfs check /dev/sda2
>>>>> [1/7] checking root items
>>>>> [2/7] checking extents
>>>>> [3/7] checking free space cache
>>>>> [4/7] checking fs roots
>>>>> [5/7] checking only csums items (without verifying data)
>>>>> [6/7] checking root refs
>>>>> [7/7] checking quota groups
>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>
>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>> doesn't matter for quota, but it matters if you are using tools like du.
>>>>
>>>> You don't even need to use a liveUSB. On your normal mounted system you
>>>> can do...
>>>>
>>>> mkdir /tmp/fulldisk
>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>> ls -lA /tmp/fulldisk
>>>>
>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 12:30                       ` Qu Wenruo
@ 2021-06-24 14:38                         ` Zhenyu Wu
  2021-06-24 14:52                           ` Zhenyu Wu
  2021-06-24 23:46                           ` Qu Wenruo
  0 siblings, 2 replies; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-24 14:38 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

[-- Attachment #1: Type: text/plain, Size: 8374 bytes --]

```
$ btrfs ins dump-tree -t data_reloc
btrfs-progs v5.10.1
data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
leaf 57458688 items 2 free space 16061 generation 941500 owner DATA_RELOC_TREE
leaf 57458688 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
generation 3 transid 0 size 0 nbytes 16384
block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
sequence 0 flags 0x0(none)
atime 1579910090.0 (2020-01-24 23:54:50)
ctime 1579910090.0 (2020-01-24 23:54:50)
mtime 1579910090.0 (2020-01-24 23:54:50)
otime 1579910090.0 (2020-01-24 23:54:50)
item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
index 0 namelen 2 name: ..
total bytes 499972575232
bytes used 466593501184
uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
$ btrfs ins dump-tree -t root 2>&1|tee root.txt
# attachment
$ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
# it's too large, i'll upload it to a cloud disk
```

thanks!



On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> > the output has changed. do i need `btrfs ins dump-tree -t root`?
> > ```
> > $ sudo btrfs quota disable /
> > $ sudo btrfs quota enable /
> > $ sudo btrfs quota rescan -w /
> > # after 22m11s
> > $ sudo btrfs qgroup show -pcre /
> > qgroupid         rfer         excl     max_rfer     max_excl parent  child
> > --------         ----         ----     --------     -------- ------  -----
> > 0/5          81.23GiB      6.90GiB         none         none ---     ---
> > ```
> > thanks!
>
> Yes, dump tree output for both root and data_reloc is needed.
>
> There may be a larger dump needed, "btrfs ins dump-tree -t extent
> <device>", as I guess there is some ghost trees not properly deleted at
> all...
>
> The whole thing is going crazy now.
>
> Thanks,
> Qu
> >
> > On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >>
> >>
> >>
> >> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> >>> i have rescan quota but it looks like nothing change...
> >>> ```
> >>> $ sudo btrfs quota rescan -w /
> >>> quota rescan started
> >>> # after 8m39s
> >>> $ sudo btrfs qgroup show -pcre /
> >>> qgroupid         rfer         excl     max_rfer     max_excl parent   child
> >>> --------         ----         ----     --------     -------- ------   -----
> >>> 0/5          81.23GiB      6.89GiB         none         none ---      ---
> >>> 0/265           0.00B        0.00B         none         none ---      ---
> >>> 0/266           0.00B        0.00B         none         none ---      ---
> >>> 0/267           0.00B        0.00B         none         none ---      ---
> >>> 0/6482          0.00B        0.00B         none         none ---      ---
> >>> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
> >>> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
> >>> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
> >>
> >> This is now getting super weird now.
> >>
> >> Firstly, if there are some snapshots of subvolume 5, it should show up
> >> here, with size over several GiB.
> >>
> >> Thus there seems to be some ghost/hidden subvolumes that even don't show
> >> up in qgroup.
> >>
> >> It's possible that some qgroup is intentionally deleted, thus not being
> >> properly updated.
> >>
> >> For that case, you may want to disable qgroup, re-enable, then do a
> >> rescan: (Can all be done on the running system)
> >>
> >> # btrfs quota disable <mnt>
> >> # btrfs quota enable <mnt>
> >> # btrfs quota rescan -w <mnt>
> >>
> >> Then provide the output of 'btrfs qgroup show -prce <mnt>"
> >>
> >> If the output doesn't change at all, after the full 10min rescan, then I
> >> guess you have to dump the root tree, along with the data_reloc tree.
> >>
> >> # btrfs ins dump-tree -t root <device>
> >> # btrfs ins dump-tree -t data_reloc <device>
> >>
> >> Thanks,
> >> Qu
> >>> 1/0             0.00B        0.00B         none         none ---      ---
> >>> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
> >>> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
> >>> ```
> >>>
> >>> and i try to mount with option subvolid:
> >>> ```
> >>> $ mkdir /tmp/fulldisk
> >>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>> $ ls -lA /tmp/fulldisk
> >>> total 4
> >>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> >>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> >>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> >>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> >>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> >>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> >>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> >>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> >>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> >>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> >>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> >>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> >>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> >>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> >>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> >>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> >>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> >>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> >>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> >>> $ sudo btrfs fi du -s /tmp/fulldisk/*
> >>>        Total   Exclusive  Set shared  Filename
> >>>     10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> >>>     33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> >>>     13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> >>>    922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> >>>     23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> >>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> >>> ioctl for device
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> >>>     11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> >>>     40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/run
> >>>     26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> >>>     47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> >>>      5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> >>> ```
> >>>
> >>> because media is a symbolic link so the ERROR should be normal.
> >>> according to `btrfs fi du` it looks like i only use about 80GiB. it is
> >>> too weird.
> >>> thanks!
> >>>
> >>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
> >>>>
> >>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
> >>>>> Thanks! this is some information of some programs.
> >>>>> ```
> >>>>> # boot from liveUSB
> >>>>> $ btrfs check /dev/sda2
> >>>>> [1/7] checking root items
> >>>>> [2/7] checking extents
> >>>>> [3/7] checking free space cache
> >>>>> [4/7] checking fs roots
> >>>>> [5/7] checking only csums items (without verifying data)
> >>>>> [6/7] checking root refs
> >>>>> [7/7] checking quota groups
> >>>>> # after mount /dev/sda2 to /mnt/gentoo
> >>>>
> >>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
> >>>> can see all subvolumes, not just the default subvolume? I guess it
> >>>> doesn't matter for quota, but it matters if you are using tools like du.
> >>>>
> >>>> You don't even need to use a liveUSB. On your normal mounted system you
> >>>> can do...
> >>>>
> >>>> mkdir /tmp/fulldisk
> >>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>> ls -lA /tmp/fulldisk
> >>>>
> >>>> to see if there are other subvolumes which are not visible in /

[-- Attachment #2: root.txt --]
[-- Type: text/plain, Size: 405234 bytes --]

btrfs-progs v5.10.1 
root tree
node 30408704 level 1 items 16 free space 477 generation 944448 owner ROOT_TREE
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leaf 38895616 items 116 free space 1029 generation 944448 owner ROOT_TREE
leaf 38895616 flags 0x1(WRITTEN) backref revision 1
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leaf 295092224 items 72 free space 6815 generation 944443 owner ROOT_TREE
leaf 295092224 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
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leaf 295206912 items 60 free space 8393 generation 944443 owner ROOT_TREE
leaf 295206912 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
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leaf 295272448 items 100 free space 3133 generation 944443 owner ROOT_TREE
leaf 295272448 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
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leaf 259276800 items 84 free space 5237 generation 944444 owner ROOT_TREE
leaf 259276800 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
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leaf 493043712 items 119 free space 581 generation 942984 owner ROOT_TREE
leaf 493043712 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
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leaf 107855872 items 75 free space 6474 generation 943505 owner ROOT_TREE
leaf 107855872 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
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leaf 107954176 items 88 free space 4711 generation 943505 owner ROOT_TREE
leaf 107954176 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
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leaf 1346753757184 items 56 free space 8812 generation 941663 owner ROOT_TREE
leaf 1346753757184 flags 0x1(WRITTEN) backref revision 1
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leaf 260079616 items 95 free space 2151 generation 944444 owner ROOT_TREE
leaf 260079616 flags 0x1(WRITTEN) backref revision 1
fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
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		ctime 1623859261.643093351 (2021-06-16 16:01:01)
		otime 1623859261.680310877 (2021-06-16 16:01:01)
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		cache generation 820009 entries 2 bitmaps 0
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		cache generation 820022 entries 0 bitmaps 0
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		cache generation 820019 entries 2 bitmaps 0
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		cache generation 820014 entries 2 bitmaps 0
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		cache generation 944443 entries 412 bitmaps 8
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		cache generation 820019 entries 0 bitmaps 0
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		cache generation 942984 entries 15 bitmaps 0
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		cache generation 941660 entries 1 bitmaps 0
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		cache generation 941662 entries 1 bitmaps 0
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		location key (7289 INODE_ITEM 0)
		cache generation 941660 entries 4 bitmaps 0
	item 102 key (DATA_RELOC_TREE ROOT_ITEM 0) itemoff 11662 itemsize 439
		generation 941500 root_dirid 256 bytenr 57458688 level 0 refs 1
		lastsnap 941498 byte_limit 0 bytes_used 16384 flags 0x0(none)
		uuid 00000000-0000-0000-0000-000000000000
		drop key (0 UNKNOWN.0 0) level 0

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 14:38                         ` Zhenyu Wu
@ 2021-06-24 14:52                           ` Zhenyu Wu
  2021-06-24 23:33                             ` Qu Wenruo
  2021-06-24 23:46                           ` Qu Wenruo
  1 sibling, 1 reply; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-24 14:52 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

the extent.txt has been uploaded to <https://share.weiyun.com/1G0Vkvv5>

thanks!

On Thu, Jun 24, 2021 at 10:38 PM Zhenyu Wu <wuzy001@gmail.com> wrote:
>
> ```
> $ btrfs ins dump-tree -t data_reloc
> btrfs-progs v5.10.1
> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
> leaf 57458688 items 2 free space 16061 generation 941500 owner DATA_RELOC_TREE
> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
> generation 3 transid 0 size 0 nbytes 16384
> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
> sequence 0 flags 0x0(none)
> atime 1579910090.0 (2020-01-24 23:54:50)
> ctime 1579910090.0 (2020-01-24 23:54:50)
> mtime 1579910090.0 (2020-01-24 23:54:50)
> otime 1579910090.0 (2020-01-24 23:54:50)
> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
> index 0 namelen 2 name: ..
> total bytes 499972575232
> bytes used 466593501184
> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
> # attachment
> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
> # it's too large, i'll upload it to a cloud disk
> ```
>
> thanks!
>
>
>
> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >
> >
> >
> > On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> > > the output has changed. do i need `btrfs ins dump-tree -t root`?
> > > ```
> > > $ sudo btrfs quota disable /
> > > $ sudo btrfs quota enable /
> > > $ sudo btrfs quota rescan -w /
> > > # after 22m11s
> > > $ sudo btrfs qgroup show -pcre /
> > > qgroupid         rfer         excl     max_rfer     max_excl parent  child
> > > --------         ----         ----     --------     -------- ------  -----
> > > 0/5          81.23GiB      6.90GiB         none         none ---     ---
> > > ```
> > > thanks!
> >
> > Yes, dump tree output for both root and data_reloc is needed.
> >
> > There may be a larger dump needed, "btrfs ins dump-tree -t extent
> > <device>", as I guess there is some ghost trees not properly deleted at
> > all...
> >
> > The whole thing is going crazy now.
> >
> > Thanks,
> > Qu
> > >
> > > On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> > >>
> > >>
> > >>
> > >> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> > >>> i have rescan quota but it looks like nothing change...
> > >>> ```
> > >>> $ sudo btrfs quota rescan -w /
> > >>> quota rescan started
> > >>> # after 8m39s
> > >>> $ sudo btrfs qgroup show -pcre /
> > >>> qgroupid         rfer         excl     max_rfer     max_excl parent   child
> > >>> --------         ----         ----     --------     -------- ------   -----
> > >>> 0/5          81.23GiB      6.89GiB         none         none ---      ---
> > >>> 0/265           0.00B        0.00B         none         none ---      ---
> > >>> 0/266           0.00B        0.00B         none         none ---      ---
> > >>> 0/267           0.00B        0.00B         none         none ---      ---
> > >>> 0/6482          0.00B        0.00B         none         none ---      ---
> > >>> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
> > >>> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
> > >>> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
> > >>
> > >> This is now getting super weird now.
> > >>
> > >> Firstly, if there are some snapshots of subvolume 5, it should show up
> > >> here, with size over several GiB.
> > >>
> > >> Thus there seems to be some ghost/hidden subvolumes that even don't show
> > >> up in qgroup.
> > >>
> > >> It's possible that some qgroup is intentionally deleted, thus not being
> > >> properly updated.
> > >>
> > >> For that case, you may want to disable qgroup, re-enable, then do a
> > >> rescan: (Can all be done on the running system)
> > >>
> > >> # btrfs quota disable <mnt>
> > >> # btrfs quota enable <mnt>
> > >> # btrfs quota rescan -w <mnt>
> > >>
> > >> Then provide the output of 'btrfs qgroup show -prce <mnt>"
> > >>
> > >> If the output doesn't change at all, after the full 10min rescan, then I
> > >> guess you have to dump the root tree, along with the data_reloc tree.
> > >>
> > >> # btrfs ins dump-tree -t root <device>
> > >> # btrfs ins dump-tree -t data_reloc <device>
> > >>
> > >> Thanks,
> > >> Qu
> > >>> 1/0             0.00B        0.00B         none         none ---      ---
> > >>> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
> > >>> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
> > >>> ```
> > >>>
> > >>> and i try to mount with option subvolid:
> > >>> ```
> > >>> $ mkdir /tmp/fulldisk
> > >>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> > >>> $ ls -lA /tmp/fulldisk
> > >>> total 4
> > >>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> > >>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> > >>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> > >>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> > >>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> > >>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> > >>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> > >>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> > >>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> > >>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> > >>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> > >>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> > >>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> > >>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> > >>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> > >>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> > >>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> > >>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> > >>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> > >>> $ sudo btrfs fi du -s /tmp/fulldisk/*
> > >>>        Total   Exclusive  Set shared  Filename
> > >>>     10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> > >>>     33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> > >>>     13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> > >>>    922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> > >>>     23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> > >>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> > >>> ioctl for device
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> > >>>     11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> > >>>     40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/run
> > >>>     26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> > >>>        0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> > >>>     47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> > >>>      5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> > >>> ```
> > >>>
> > >>> because media is a symbolic link so the ERROR should be normal.
> > >>> according to `btrfs fi du` it looks like i only use about 80GiB. it is
> > >>> too weird.
> > >>> thanks!
> > >>>
> > >>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
> > >>>>
> > >>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
> > >>>>> Thanks! this is some information of some programs.
> > >>>>> ```
> > >>>>> # boot from liveUSB
> > >>>>> $ btrfs check /dev/sda2
> > >>>>> [1/7] checking root items
> > >>>>> [2/7] checking extents
> > >>>>> [3/7] checking free space cache
> > >>>>> [4/7] checking fs roots
> > >>>>> [5/7] checking only csums items (without verifying data)
> > >>>>> [6/7] checking root refs
> > >>>>> [7/7] checking quota groups
> > >>>>> # after mount /dev/sda2 to /mnt/gentoo
> > >>>>
> > >>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
> > >>>> can see all subvolumes, not just the default subvolume? I guess it
> > >>>> doesn't matter for quota, but it matters if you are using tools like du.
> > >>>>
> > >>>> You don't even need to use a liveUSB. On your normal mounted system you
> > >>>> can do...
> > >>>>
> > >>>> mkdir /tmp/fulldisk
> > >>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> > >>>> ls -lA /tmp/fulldisk
> > >>>>
> > >>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 14:52                           ` Zhenyu Wu
@ 2021-06-24 23:33                             ` Qu Wenruo
  2021-06-24 23:51                               ` Su Yue
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-24 23:33 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/24 下午10:52, Zhenyu Wu wrote:
> the extent.txt has been uploaded to <https://share.weiyun.com/1G0Vkvv5>
>
> thanks!
>

Sorry, could you upload it to google drive?

I don't have any tencent account to download the file.

Thanks,
Qu

> On Thu, Jun 24, 2021 at 10:38 PM Zhenyu Wu <wuzy001@gmail.com> wrote:
>>
>> ```
>> $ btrfs ins dump-tree -t data_reloc
>> btrfs-progs v5.10.1
>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>> leaf 57458688 items 2 free space 16061 generation 941500 owner DATA_RELOC_TREE
>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>> generation 3 transid 0 size 0 nbytes 16384
>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>> sequence 0 flags 0x0(none)
>> atime 1579910090.0 (2020-01-24 23:54:50)
>> ctime 1579910090.0 (2020-01-24 23:54:50)
>> mtime 1579910090.0 (2020-01-24 23:54:50)
>> otime 1579910090.0 (2020-01-24 23:54:50)
>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>> index 0 namelen 2 name: ..
>> total bytes 499972575232
>> bytes used 466593501184
>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>> # attachment
>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>> # it's too large, i'll upload it to a cloud disk
>> ```
>>
>> thanks!
>>
>>
>>
>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>>
>>>
>>>
>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>>> ```
>>>> $ sudo btrfs quota disable /
>>>> $ sudo btrfs quota enable /
>>>> $ sudo btrfs quota rescan -w /
>>>> # after 22m11s
>>>> $ sudo btrfs qgroup show -pcre /
>>>> qgroupid         rfer         excl     max_rfer     max_excl parent  child
>>>> --------         ----         ----     --------     -------- ------  -----
>>>> 0/5          81.23GiB      6.90GiB         none         none ---     ---
>>>> ```
>>>> thanks!
>>>
>>> Yes, dump tree output for both root and data_reloc is needed.
>>>
>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>>> <device>", as I guess there is some ghost trees not properly deleted at
>>> all...
>>>
>>> The whole thing is going crazy now.
>>>
>>> Thanks,
>>> Qu
>>>>
>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>> i have rescan quota but it looks like nothing change...
>>>>>> ```
>>>>>> $ sudo btrfs quota rescan -w /
>>>>>> quota rescan started
>>>>>> # after 8m39s
>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent   child
>>>>>> --------         ----         ----     --------     -------- ------   -----
>>>>>> 0/5          81.23GiB      6.89GiB         none         none ---      ---
>>>>>> 0/265           0.00B        0.00B         none         none ---      ---
>>>>>> 0/266           0.00B        0.00B         none         none ---      ---
>>>>>> 0/267           0.00B        0.00B         none         none ---      ---
>>>>>> 0/6482          0.00B        0.00B         none         none ---      ---
>>>>>> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
>>>>>> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
>>>>>> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
>>>>>
>>>>> This is now getting super weird now.
>>>>>
>>>>> Firstly, if there are some snapshots of subvolume 5, it should show up
>>>>> here, with size over several GiB.
>>>>>
>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't show
>>>>> up in qgroup.
>>>>>
>>>>> It's possible that some qgroup is intentionally deleted, thus not being
>>>>> properly updated.
>>>>>
>>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>>> rescan: (Can all be done on the running system)
>>>>>
>>>>> # btrfs quota disable <mnt>
>>>>> # btrfs quota enable <mnt>
>>>>> # btrfs quota rescan -w <mnt>
>>>>>
>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>
>>>>> If the output doesn't change at all, after the full 10min rescan, then I
>>>>> guess you have to dump the root tree, along with the data_reloc tree.
>>>>>
>>>>> # btrfs ins dump-tree -t root <device>
>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>
>>>>> Thanks,
>>>>> Qu
>>>>>> 1/0             0.00B        0.00B         none         none ---      ---
>>>>>> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
>>>>>> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
>>>>>> ```
>>>>>>
>>>>>> and i try to mount with option subvolid:
>>>>>> ```
>>>>>> $ mkdir /tmp/fulldisk
>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>> $ ls -lA /tmp/fulldisk
>>>>>> total 4
>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>         Total   Exclusive  Set shared  Filename
>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>>> ioctl for device
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>> ```
>>>>>>
>>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB. it is
>>>>>> too weird.
>>>>>> thanks!
>>>>>>
>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
>>>>>>>
>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>> ```
>>>>>>>> # boot from liveUSB
>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>> [1/7] checking root items
>>>>>>>> [2/7] checking extents
>>>>>>>> [3/7] checking free space cache
>>>>>>>> [4/7] checking fs roots
>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>> [6/7] checking root refs
>>>>>>>> [7/7] checking quota groups
>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>
>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>>> doesn't matter for quota, but it matters if you are using tools like du.
>>>>>>>
>>>>>>> You don't even need to use a liveUSB. On your normal mounted system you
>>>>>>> can do...
>>>>>>>
>>>>>>> mkdir /tmp/fulldisk
>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>
>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 14:38                         ` Zhenyu Wu
  2021-06-24 14:52                           ` Zhenyu Wu
@ 2021-06-24 23:46                           ` Qu Wenruo
  2021-06-25  0:59                             ` Qu Wenruo
  1 sibling, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-24 23:46 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs

[-- Attachment #1: Type: text/plain, Size: 9682 bytes --]



On 2021/6/24 下午10:38, Zhenyu Wu wrote:
> ```
> $ btrfs ins dump-tree -t data_reloc
> btrfs-progs v5.10.1
> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
> leaf 57458688 items 2 free space 16061 generation 941500 owner DATA_RELOC_TREE
> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
> generation 3 transid 0 size 0 nbytes 16384
> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
> sequence 0 flags 0x0(none)
> atime 1579910090.0 (2020-01-24 23:54:50)
> ctime 1579910090.0 (2020-01-24 23:54:50)
> mtime 1579910090.0 (2020-01-24 23:54:50)
> otime 1579910090.0 (2020-01-24 23:54:50)
> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
> index 0 namelen 2 name: ..
> total bytes 499972575232
> bytes used 466593501184
> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
> # attachment

This explains everything!

There are 58 root items! Meaning all of those snapshots are still taking
space.

Furthermore, all those roots have no backref, meaning it's already
unlinked from the fs, thus btrfs subvolume list won't list them.

For the worst part, they also have no orphan item marking them to be
deleted.
Thus they all become real ghost subvolumes.

And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
to create 0 level qgroups, all these ghost snapshots are not created,
causing the super weird result.

I have no idea why this could happen, need to dig further into the code.

But for now, you can try to delete all these 58 subvolumes by their
subvolume ID.

You can try this as a quick test:

# btrfs subv delete -i 6317 <mnt>
# btrfs subv sync <mnt>

Then check if you still have "6317 ROOT_ITEM" in your root tree dump.

If it's gone, repeat the process for all roots, I have extracted the
root list and attached, so that you can craft a bash script to delete
all of them.
(Note that above "subv sync" is not needed for each deletion if you want
to delete them in a batch)

Thanks,
Qu

> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
> # it's too large, i'll upload it to a cloud disk
> ```
>
> thanks!
>
>
>
> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>
>>
>>
>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>> ```
>>> $ sudo btrfs quota disable /
>>> $ sudo btrfs quota enable /
>>> $ sudo btrfs quota rescan -w /
>>> # after 22m11s
>>> $ sudo btrfs qgroup show -pcre /
>>> qgroupid         rfer         excl     max_rfer     max_excl parent  child
>>> --------         ----         ----     --------     -------- ------  -----
>>> 0/5          81.23GiB      6.90GiB         none         none ---     ---
>>> ```
>>> thanks!
>>
>> Yes, dump tree output for both root and data_reloc is needed.
>>
>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>> <device>", as I guess there is some ghost trees not properly deleted at
>> all...
>>
>> The whole thing is going crazy now.
>>
>> Thanks,
>> Qu
>>>
>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>>>
>>>>
>>>>
>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>> i have rescan quota but it looks like nothing change...
>>>>> ```
>>>>> $ sudo btrfs quota rescan -w /
>>>>> quota rescan started
>>>>> # after 8m39s
>>>>> $ sudo btrfs qgroup show -pcre /
>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent   child
>>>>> --------         ----         ----     --------     -------- ------   -----
>>>>> 0/5          81.23GiB      6.89GiB         none         none ---      ---
>>>>> 0/265           0.00B        0.00B         none         none ---      ---
>>>>> 0/266           0.00B        0.00B         none         none ---      ---
>>>>> 0/267           0.00B        0.00B         none         none ---      ---
>>>>> 0/6482          0.00B        0.00B         none         none ---      ---
>>>>> 0/7501       16.00KiB     16.00KiB         none         none ---      ---
>>>>> 0/7502       16.00KiB     16.00KiB         none         none 255/7502 ---
>>>>> 0/7503       16.00KiB     16.00KiB         none         none 255/7503 ---
>>>>
>>>> This is now getting super weird now.
>>>>
>>>> Firstly, if there are some snapshots of subvolume 5, it should show up
>>>> here, with size over several GiB.
>>>>
>>>> Thus there seems to be some ghost/hidden subvolumes that even don't show
>>>> up in qgroup.
>>>>
>>>> It's possible that some qgroup is intentionally deleted, thus not being
>>>> properly updated.
>>>>
>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>> rescan: (Can all be done on the running system)
>>>>
>>>> # btrfs quota disable <mnt>
>>>> # btrfs quota enable <mnt>
>>>> # btrfs quota rescan -w <mnt>
>>>>
>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>
>>>> If the output doesn't change at all, after the full 10min rescan, then I
>>>> guess you have to dump the root tree, along with the data_reloc tree.
>>>>
>>>> # btrfs ins dump-tree -t root <device>
>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>
>>>> Thanks,
>>>> Qu
>>>>> 1/0             0.00B        0.00B         none         none ---      ---
>>>>> 255/7502     16.00KiB     16.00KiB         none         none ---      0/7502
>>>>> 255/7503     16.00KiB     16.00KiB         none         none ---      0/7503
>>>>> ```
>>>>>
>>>>> and i try to mount with option subvolid:
>>>>> ```
>>>>> $ mkdir /tmp/fulldisk
>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>> $ ls -lA /tmp/fulldisk
>>>>> total 4
>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>         Total   Exclusive  Set shared  Filename
>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>> ioctl for device
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>> ```
>>>>>
>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>> according to `btrfs fi du` it looks like i only use about 80GiB. it is
>>>>> too weird.
>>>>> thanks!
>>>>>
>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net> wrote:
>>>>>>
>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>> Thanks! this is some information of some programs.
>>>>>>> ```
>>>>>>> # boot from liveUSB
>>>>>>> $ btrfs check /dev/sda2
>>>>>>> [1/7] checking root items
>>>>>>> [2/7] checking extents
>>>>>>> [3/7] checking free space cache
>>>>>>> [4/7] checking fs roots
>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>> [6/7] checking root refs
>>>>>>> [7/7] checking quota groups
>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>
>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make sure you
>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>> doesn't matter for quota, but it matters if you are using tools like du.
>>>>>>
>>>>>> You don't even need to use a liveUSB. On your normal mounted system you
>>>>>> can do...
>>>>>>
>>>>>> mkdir /tmp/fulldisk
>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>> ls -lA /tmp/fulldisk
>>>>>>
>>>>>> to see if there are other subvolumes which are not visible in /

[-- Attachment #2: roots --]
[-- Type: text/plain, Size: 348 bytes --]

6317 
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^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 23:33                             ` Qu Wenruo
@ 2021-06-24 23:51                               ` Su Yue
  0 siblings, 0 replies; 24+ messages in thread
From: Su Yue @ 2021-06-24 23:51 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Zhenyu Wu, Graham Cobb, linux-btrfs


On Fri 25 Jun 2021 at 07:33, Qu Wenruo <quwenruo.btrfs@gmx.com> 
wrote:

> On 2021/6/24 下午10:52, Zhenyu Wu wrote:
>> the extent.txt has been uploaded to 
>> <https://share.weiyun.com/1G0Vkvv5>
>>
>> thanks!
>>
>
> Sorry, could you upload it to google drive?
>
The download speepd of tecent disk even is even slower than my 
VPN.

https://drive.google.com/file/d/1HJzw7vvVDOz4EIpzjg1M2Dr5Y0YbzkgD/view?usp=sharing

--
Su

> I don't have any tencent account to download the file.
>
> Thanks,
> Qu
>
>> On Thu, Jun 24, 2021 at 10:38 PM Zhenyu Wu <wuzy001@gmail.com> 
>> wrote:
>>>
>>> ```
>>> $ btrfs ins dump-tree -t data_reloc
>>> btrfs-progs v5.10.1
>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>>> leaf 57458688 items 2 free space 16061 generation 941500 owner 
>>> DATA_RELOC_TREE
>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>>> generation 3 transid 0 size 0 nbytes 16384
>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>>> sequence 0 flags 0x0(none)
>>> atime 1579910090.0 (2020-01-24 23:54:50)
>>> ctime 1579910090.0 (2020-01-24 23:54:50)
>>> mtime 1579910090.0 (2020-01-24 23:54:50)
>>> otime 1579910090.0 (2020-01-24 23:54:50)
>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>>> index 0 namelen 2 name: ..
>>> total bytes 499972575232
>>> bytes used 466593501184
>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>>> # attachment
>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>>> # it's too large, i'll upload it to a cloud disk
>>> ```
>>>
>>> thanks!
>>>
>>>
>>>
>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo 
>>> <quwenruo.btrfs@gmx.com> wrote:
>>>>
>>>>
>>>>
>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>>> the output has changed. do i need `btrfs ins dump-tree -t 
>>>>> root`?
>>>>> ```
>>>>> $ sudo btrfs quota disable /
>>>>> $ sudo btrfs quota enable /
>>>>> $ sudo btrfs quota rescan -w /
>>>>> # after 22m11s
>>>>> $ sudo btrfs qgroup show -pcre /
>>>>> qgroupid         rfer         excl     max_rfer     max_excl 
>>>>> parent  child
>>>>> --------         ----         ----     --------     -------- 
>>>>> ------  -----
>>>>> 0/5          81.23GiB      6.90GiB         none         none 
>>>>> ---     ---
>>>>> ```
>>>>> thanks!
>>>>
>>>> Yes, dump tree output for both root and data_reloc is needed.
>>>>
>>>> There may be a larger dump needed, "btrfs ins dump-tree -t 
>>>> extent
>>>> <device>", as I guess there is some ghost trees not properly 
>>>> deleted at
>>>> all...
>>>>
>>>> The whole thing is going crazy now.
>>>>
>>>> Thanks,
>>>> Qu
>>>>>
>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo 
>>>>> <quwenruo.btrfs@gmx.com> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>>> i have rescan quota but it looks like nothing change...
>>>>>>> ```
>>>>>>> $ sudo btrfs quota rescan -w /
>>>>>>> quota rescan started
>>>>>>> # after 8m39s
>>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>>> qgroupid         rfer         excl     max_rfer 
>>>>>>> max_excl parent   child
>>>>>>> --------         ----         ----     -------- 
>>>>>>> -------- ------   -----
>>>>>>> 0/5          81.23GiB      6.89GiB         none 
>>>>>>> none ---      ---
>>>>>>> 0/265           0.00B        0.00B         none 
>>>>>>> none ---      ---
>>>>>>> 0/266           0.00B        0.00B         none 
>>>>>>> none ---      ---
>>>>>>> 0/267           0.00B        0.00B         none 
>>>>>>> none ---      ---
>>>>>>> 0/6482          0.00B        0.00B         none 
>>>>>>> none ---      ---
>>>>>>> 0/7501       16.00KiB     16.00KiB         none 
>>>>>>> none ---      ---
>>>>>>> 0/7502       16.00KiB     16.00KiB         none 
>>>>>>> none 255/7502 ---
>>>>>>> 0/7503       16.00KiB     16.00KiB         none 
>>>>>>> none 255/7503 ---
>>>>>>
>>>>>> This is now getting super weird now.
>>>>>>
>>>>>> Firstly, if there are some snapshots of subvolume 5, it 
>>>>>> should show up
>>>>>> here, with size over several GiB.
>>>>>>
>>>>>> Thus there seems to be some ghost/hidden subvolumes that 
>>>>>> even don't show
>>>>>> up in qgroup.
>>>>>>
>>>>>> It's possible that some qgroup is intentionally deleted, 
>>>>>> thus not being
>>>>>> properly updated.
>>>>>>
>>>>>> For that case, you may want to disable qgroup, re-enable, 
>>>>>> then do a
>>>>>> rescan: (Can all be done on the running system)
>>>>>>
>>>>>> # btrfs quota disable <mnt>
>>>>>> # btrfs quota enable <mnt>
>>>>>> # btrfs quota rescan -w <mnt>
>>>>>>
>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>>
>>>>>> If the output doesn't change at all, after the full 10min 
>>>>>> rescan, then I
>>>>>> guess you have to dump the root tree, along with the 
>>>>>> data_reloc tree.
>>>>>>
>>>>>> # btrfs ins dump-tree -t root <device>
>>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>>
>>>>>> Thanks,
>>>>>> Qu
>>>>>>> 1/0             0.00B        0.00B         none 
>>>>>>> none ---      ---
>>>>>>> 255/7502     16.00KiB     16.00KiB         none 
>>>>>>> none ---      0/7502
>>>>>>> 255/7503     16.00KiB     16.00KiB         none 
>>>>>>> none ---      0/7503
>>>>>>> ```
>>>>>>>
>>>>>>> and i try to mount with option subvolid:
>>>>>>> ```
>>>>>>> $ mkdir /tmp/fulldisk
>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>> $ ls -lA /tmp/fulldisk
>>>>>>> total 4
>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> 
>>>>>>> /run/media
>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>>         Total   Exclusive  Set shared  Filename
>>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': 
>>>>>>> Inappropriate
>>>>>>> ioctl for device
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>>         0.00B       0.00B       0.00B 
>>>>>>>         /tmp/fulldisk/tftproot
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>>> ```
>>>>>>>
>>>>>>> because media is a symbolic link so the ERROR should be 
>>>>>>> normal.
>>>>>>> according to `btrfs fi du` it looks like i only use about 
>>>>>>> 80GiB. it is
>>>>>>> too weird.
>>>>>>> thanks!
>>>>>>>
>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb 
>>>>>>> <g.btrfs@cobb.uk.net> wrote:
>>>>>>>>
>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>>> ```
>>>>>>>>> # boot from liveUSB
>>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>>> [1/7] checking root items
>>>>>>>>> [2/7] checking extents
>>>>>>>>> [3/7] checking free space cache
>>>>>>>>> [4/7] checking fs roots
>>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>>> [6/7] checking root refs
>>>>>>>>> [7/7] checking quota groups
>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>>
>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to 
>>>>>>>> make sure you
>>>>>>>> can see all subvolumes, not just the default subvolume? I 
>>>>>>>> guess it
>>>>>>>> doesn't matter for quota, but it matters if you are using 
>>>>>>>> tools like du.
>>>>>>>>
>>>>>>>> You don't even need to use a liveUSB. On your normal 
>>>>>>>> mounted system you
>>>>>>>> can do...
>>>>>>>>
>>>>>>>> mkdir /tmp/fulldisk
>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>>
>>>>>>>> to see if there are other subvolumes which are not 
>>>>>>>> visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-24 23:46                           ` Qu Wenruo
@ 2021-06-25  0:59                             ` Qu Wenruo
  2021-06-25  5:28                               ` Qu Wenruo
  2021-06-25  5:30                               ` Zhenyu Wu
  0 siblings, 2 replies; 24+ messages in thread
From: Qu Wenruo @ 2021-06-25  0:59 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/25 上午7:46, Qu Wenruo wrote:
>
>
> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
>> ```
>> $ btrfs ins dump-tree -t data_reloc
>> btrfs-progs v5.10.1
>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>> leaf 57458688 items 2 free space 16061 generation 941500 owner
>> DATA_RELOC_TREE
>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>> generation 3 transid 0 size 0 nbytes 16384
>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>> sequence 0 flags 0x0(none)
>> atime 1579910090.0 (2020-01-24 23:54:50)
>> ctime 1579910090.0 (2020-01-24 23:54:50)
>> mtime 1579910090.0 (2020-01-24 23:54:50)
>> otime 1579910090.0 (2020-01-24 23:54:50)
>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>> index 0 namelen 2 name: ..
>> total bytes 499972575232
>> bytes used 466593501184
>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>> # attachment
>
> This explains everything!
>
> There are 58 root items! Meaning all of those snapshots are still taking
> space.
>
> Furthermore, all those roots have no backref, meaning it's already
> unlinked from the fs, thus btrfs subvolume list won't list them.
>
> For the worst part, they also have no orphan item marking them to be
> deleted.
> Thus they all become real ghost subvolumes.
>
> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
> to create 0 level qgroups, all these ghost snapshots are not created,
> causing the super weird result.
>
> I have no idea why this could happen, need to dig further into the code.

A quick glance into the code, and it seems that for such ghost
subvolumes, "btrfs subv delete -i" may not work.

For that case, I'll craft you a special btrfs-progs branch so that we
can add orphan items for those ghost roots and let them go for good.

Thus if above "delete -i" doesn't work, please prepare a liveUSB in
which you can compile btrfs-progs.

Thanks,
Qu
>
> But for now, you can try to delete all these 58 subvolumes by their
> subvolume ID.
>
> You can try this as a quick test:
>
> # btrfs subv delete -i 6317 <mnt>
> # btrfs subv sync <mnt>
>
> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
>
> If it's gone, repeat the process for all roots, I have extracted the
> root list and attached, so that you can craft a bash script to delete
> all of them.
> (Note that above "subv sync" is not needed for each deletion if you want
> to delete them in a batch)
>
> Thanks,
> Qu
>
>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>> # it's too large, i'll upload it to a cloud disk
>> ```
>>
>> thanks!
>>
>>
>>
>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>>
>>>
>>>
>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>>> ```
>>>> $ sudo btrfs quota disable /
>>>> $ sudo btrfs quota enable /
>>>> $ sudo btrfs quota rescan -w /
>>>> # after 22m11s
>>>> $ sudo btrfs qgroup show -pcre /
>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
>>>> child
>>>> --------         ----         ----     --------     -------- ------
>>>> -----
>>>> 0/5          81.23GiB      6.90GiB         none         none ---
>>>> ---
>>>> ```
>>>> thanks!
>>>
>>> Yes, dump tree output for both root and data_reloc is needed.
>>>
>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>>> <device>", as I guess there is some ghost trees not properly deleted at
>>> all...
>>>
>>> The whole thing is going crazy now.
>>>
>>> Thanks,
>>> Qu
>>>>
>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>> wrote:
>>>>>
>>>>>
>>>>>
>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>> i have rescan quota but it looks like nothing change...
>>>>>> ```
>>>>>> $ sudo btrfs quota rescan -w /
>>>>>> quota rescan started
>>>>>> # after 8m39s
>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
>>>>>> parent   child
>>>>>> --------         ----         ----     --------     --------
>>>>>> ------   -----
>>>>>> 0/5          81.23GiB      6.89GiB         none         none
>>>>>> ---      ---
>>>>>> 0/265           0.00B        0.00B         none         none
>>>>>> ---      ---
>>>>>> 0/266           0.00B        0.00B         none         none
>>>>>> ---      ---
>>>>>> 0/267           0.00B        0.00B         none         none
>>>>>> ---      ---
>>>>>> 0/6482          0.00B        0.00B         none         none
>>>>>> ---      ---
>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
>>>>>> ---      ---
>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
>>>>>> 255/7502 ---
>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
>>>>>> 255/7503 ---
>>>>>
>>>>> This is now getting super weird now.
>>>>>
>>>>> Firstly, if there are some snapshots of subvolume 5, it should show up
>>>>> here, with size over several GiB.
>>>>>
>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
>>>>> show
>>>>> up in qgroup.
>>>>>
>>>>> It's possible that some qgroup is intentionally deleted, thus not
>>>>> being
>>>>> properly updated.
>>>>>
>>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>>> rescan: (Can all be done on the running system)
>>>>>
>>>>> # btrfs quota disable <mnt>
>>>>> # btrfs quota enable <mnt>
>>>>> # btrfs quota rescan -w <mnt>
>>>>>
>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>
>>>>> If the output doesn't change at all, after the full 10min rescan,
>>>>> then I
>>>>> guess you have to dump the root tree, along with the data_reloc tree.
>>>>>
>>>>> # btrfs ins dump-tree -t root <device>
>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>
>>>>> Thanks,
>>>>> Qu
>>>>>> 1/0             0.00B        0.00B         none         none
>>>>>> ---      ---
>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
>>>>>> ---      0/7502
>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
>>>>>> ---      0/7503
>>>>>> ```
>>>>>>
>>>>>> and i try to mount with option subvolid:
>>>>>> ```
>>>>>> $ mkdir /tmp/fulldisk
>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>> $ ls -lA /tmp/fulldisk
>>>>>> total 4
>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>         Total   Exclusive  Set shared  Filename
>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>>> ioctl for device
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>> ```
>>>>>>
>>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
>>>>>> it is
>>>>>> too weird.
>>>>>> thanks!
>>>>>>
>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
>>>>>> wrote:
>>>>>>>
>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>> ```
>>>>>>>> # boot from liveUSB
>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>> [1/7] checking root items
>>>>>>>> [2/7] checking extents
>>>>>>>> [3/7] checking free space cache
>>>>>>>> [4/7] checking fs roots
>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>> [6/7] checking root refs
>>>>>>>> [7/7] checking quota groups
>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>
>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
>>>>>>> sure you
>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>>> doesn't matter for quota, but it matters if you are using tools
>>>>>>> like du.
>>>>>>>
>>>>>>> You don't even need to use a liveUSB. On your normal mounted
>>>>>>> system you
>>>>>>> can do...
>>>>>>>
>>>>>>> mkdir /tmp/fulldisk
>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>
>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-25  0:59                             ` Qu Wenruo
@ 2021-06-25  5:28                               ` Qu Wenruo
  2021-06-25  5:36                                 ` Qu Wenruo
  2021-06-25  5:30                               ` Zhenyu Wu
  1 sibling, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-25  5:28 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/25 上午8:59, Qu Wenruo wrote:
>
>
> On 2021/6/25 上午7:46, Qu Wenruo wrote:
>>
>>
>> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
>>> ```
>>> $ btrfs ins dump-tree -t data_reloc
>>> btrfs-progs v5.10.1
>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>>> leaf 57458688 items 2 free space 16061 generation 941500 owner
>>> DATA_RELOC_TREE
>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>>> generation 3 transid 0 size 0 nbytes 16384
>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>>> sequence 0 flags 0x0(none)
>>> atime 1579910090.0 (2020-01-24 23:54:50)
>>> ctime 1579910090.0 (2020-01-24 23:54:50)
>>> mtime 1579910090.0 (2020-01-24 23:54:50)
>>> otime 1579910090.0 (2020-01-24 23:54:50)
>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>>> index 0 namelen 2 name: ..
>>> total bytes 499972575232
>>> bytes used 466593501184
>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>>> # attachment
>>
>> This explains everything!
>>
>> There are 58 root items! Meaning all of those snapshots are still taking
>> space.
>>
>> Furthermore, all those roots have no backref, meaning it's already
>> unlinked from the fs, thus btrfs subvolume list won't list them.
>>
>> For the worst part, they also have no orphan item marking them to be
>> deleted.
>> Thus they all become real ghost subvolumes.
>>
>> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
>> to create 0 level qgroups, all these ghost snapshots are not created,
>> causing the super weird result.
>>
>> I have no idea why this could happen, need to dig further into the code.
>
> A quick glance into the code, and it seems that for such ghost
> subvolumes, "btrfs subv delete -i" may not work.
>
> For that case, I'll craft you a special btrfs-progs branch so that we
> can add orphan items for those ghost roots and let them go for good.
>
> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
> which you can compile btrfs-progs.

Here you go, please use the branch of btrfs-progs in LiveUSB:

https://github.com/adam900710/btrfs-progs/tree/dirty_fixes

It enhances btrfs-progs/btrfs-corrupt-block command (I know it's scary,
but trust me, I make the extra option to be extra safe).

Now in your liveUSB, make sure your fs is not mounted first.

Then go the following loop:

# ./btrfs-corrupt-block -X <device>

It will output which roots are ghosts and will add back orphan items for
them.

# mount <device> <mnt>

# btrfs subv sync <mnt>

It will wait for the 4 subvolumes to be deleted.

# umount <mnt>

Then go back to "corrupt-block -X" command and continue.
I made the command to only add orphans to at most 4 subvolumes, to make
sure we won't trigger too many deletions at the same time.

If you don't want above loop (you need to go at least 15 loops), nor
want to craft a small script to do that, I can change the code to do all
of them in one go, but I'm not sure if it's OK for the kernel to handle
so many orphan roots.

BTW, since you have qgroup enabled, it will make subvolume deletion
pretty slow, it's recommended to disable qgroup first.

Thanks,
Qu
>
> Thanks,
> Qu
>>
>> But for now, you can try to delete all these 58 subvolumes by their
>> subvolume ID.
>>
>> You can try this as a quick test:
>>
>> # btrfs subv delete -i 6317 <mnt>
>> # btrfs subv sync <mnt>
>>
>> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
>>
>> If it's gone, repeat the process for all roots, I have extracted the
>> root list and attached, so that you can craft a bash script to delete
>> all of them.
>> (Note that above "subv sync" is not needed for each deletion if you want
>> to delete them in a batch)
>>
>> Thanks,
>> Qu
>>
>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>>> # it's too large, i'll upload it to a cloud disk
>>> ```
>>>
>>> thanks!
>>>
>>>
>>>
>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>> wrote:
>>>>
>>>>
>>>>
>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>>>> ```
>>>>> $ sudo btrfs quota disable /
>>>>> $ sudo btrfs quota enable /
>>>>> $ sudo btrfs quota rescan -w /
>>>>> # after 22m11s
>>>>> $ sudo btrfs qgroup show -pcre /
>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
>>>>> child
>>>>> --------         ----         ----     --------     -------- ------
>>>>> -----
>>>>> 0/5          81.23GiB      6.90GiB         none         none ---
>>>>> ---
>>>>> ```
>>>>> thanks!
>>>>
>>>> Yes, dump tree output for both root and data_reloc is needed.
>>>>
>>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>>>> <device>", as I guess there is some ghost trees not properly deleted at
>>>> all...
>>>>
>>>> The whole thing is going crazy now.
>>>>
>>>> Thanks,
>>>> Qu
>>>>>
>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>>> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>>> i have rescan quota but it looks like nothing change...
>>>>>>> ```
>>>>>>> $ sudo btrfs quota rescan -w /
>>>>>>> quota rescan started
>>>>>>> # after 8m39s
>>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
>>>>>>> parent   child
>>>>>>> --------         ----         ----     --------     --------
>>>>>>> ------   -----
>>>>>>> 0/5          81.23GiB      6.89GiB         none         none
>>>>>>> ---      ---
>>>>>>> 0/265           0.00B        0.00B         none         none
>>>>>>> ---      ---
>>>>>>> 0/266           0.00B        0.00B         none         none
>>>>>>> ---      ---
>>>>>>> 0/267           0.00B        0.00B         none         none
>>>>>>> ---      ---
>>>>>>> 0/6482          0.00B        0.00B         none         none
>>>>>>> ---      ---
>>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
>>>>>>> ---      ---
>>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
>>>>>>> 255/7502 ---
>>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
>>>>>>> 255/7503 ---
>>>>>>
>>>>>> This is now getting super weird now.
>>>>>>
>>>>>> Firstly, if there are some snapshots of subvolume 5, it should
>>>>>> show up
>>>>>> here, with size over several GiB.
>>>>>>
>>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
>>>>>> show
>>>>>> up in qgroup.
>>>>>>
>>>>>> It's possible that some qgroup is intentionally deleted, thus not
>>>>>> being
>>>>>> properly updated.
>>>>>>
>>>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>>>> rescan: (Can all be done on the running system)
>>>>>>
>>>>>> # btrfs quota disable <mnt>
>>>>>> # btrfs quota enable <mnt>
>>>>>> # btrfs quota rescan -w <mnt>
>>>>>>
>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>>
>>>>>> If the output doesn't change at all, after the full 10min rescan,
>>>>>> then I
>>>>>> guess you have to dump the root tree, along with the data_reloc tree.
>>>>>>
>>>>>> # btrfs ins dump-tree -t root <device>
>>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>>
>>>>>> Thanks,
>>>>>> Qu
>>>>>>> 1/0             0.00B        0.00B         none         none
>>>>>>> ---      ---
>>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
>>>>>>> ---      0/7502
>>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
>>>>>>> ---      0/7503
>>>>>>> ```
>>>>>>>
>>>>>>> and i try to mount with option subvolid:
>>>>>>> ```
>>>>>>> $ mkdir /tmp/fulldisk
>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>> $ ls -lA /tmp/fulldisk
>>>>>>> total 4
>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>>         Total   Exclusive  Set shared  Filename
>>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>>>> ioctl for device
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>>> ```
>>>>>>>
>>>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
>>>>>>> it is
>>>>>>> too weird.
>>>>>>> thanks!
>>>>>>>
>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>>> ```
>>>>>>>>> # boot from liveUSB
>>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>>> [1/7] checking root items
>>>>>>>>> [2/7] checking extents
>>>>>>>>> [3/7] checking free space cache
>>>>>>>>> [4/7] checking fs roots
>>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>>> [6/7] checking root refs
>>>>>>>>> [7/7] checking quota groups
>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>>
>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
>>>>>>>> sure you
>>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>>>> doesn't matter for quota, but it matters if you are using tools
>>>>>>>> like du.
>>>>>>>>
>>>>>>>> You don't even need to use a liveUSB. On your normal mounted
>>>>>>>> system you
>>>>>>>> can do...
>>>>>>>>
>>>>>>>> mkdir /tmp/fulldisk
>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>>
>>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-25  0:59                             ` Qu Wenruo
  2021-06-25  5:28                               ` Qu Wenruo
@ 2021-06-25  5:30                               ` Zhenyu Wu
  1 sibling, 0 replies; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-25  5:30 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

you are right. `btrfs subv delete -i` cannot work:
```
btrfs subv delete -i 6317 /mnt/gentoo
ERROR: Subvolume not found: No such file or directory
```

after `btrfs subv sync`, the subvolume 6317 still exists...

thanks!

On Fri, Jun 25, 2021 at 9:00 AM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/25 上午7:46, Qu Wenruo wrote:
> >
> >
> > On 2021/6/24 下午10:38, Zhenyu Wu wrote:
> >> ```
> >> $ btrfs ins dump-tree -t data_reloc
> >> btrfs-progs v5.10.1
> >> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
> >> leaf 57458688 items 2 free space 16061 generation 941500 owner
> >> DATA_RELOC_TREE
> >> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
> >> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
> >> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
> >> generation 3 transid 0 size 0 nbytes 16384
> >> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
> >> sequence 0 flags 0x0(none)
> >> atime 1579910090.0 (2020-01-24 23:54:50)
> >> ctime 1579910090.0 (2020-01-24 23:54:50)
> >> mtime 1579910090.0 (2020-01-24 23:54:50)
> >> otime 1579910090.0 (2020-01-24 23:54:50)
> >> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
> >> index 0 namelen 2 name: ..
> >> total bytes 499972575232
> >> bytes used 466593501184
> >> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
> >> # attachment
> >
> > This explains everything!
> >
> > There are 58 root items! Meaning all of those snapshots are still taking
> > space.
> >
> > Furthermore, all those roots have no backref, meaning it's already
> > unlinked from the fs, thus btrfs subvolume list won't list them.
> >
> > For the worst part, they also have no orphan item marking them to be
> > deleted.
> > Thus they all become real ghost subvolumes.
> >
> > And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
> > to create 0 level qgroups, all these ghost snapshots are not created,
> > causing the super weird result.
> >
> > I have no idea why this could happen, need to dig further into the code.
>
> A quick glance into the code, and it seems that for such ghost
> subvolumes, "btrfs subv delete -i" may not work.
>
> For that case, I'll craft you a special btrfs-progs branch so that we
> can add orphan items for those ghost roots and let them go for good.
>
> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
> which you can compile btrfs-progs.
>
> Thanks,
> Qu
> >
> > But for now, you can try to delete all these 58 subvolumes by their
> > subvolume ID.
> >
> > You can try this as a quick test:
> >
> > # btrfs subv delete -i 6317 <mnt>
> > # btrfs subv sync <mnt>
> >
> > Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
> >
> > If it's gone, repeat the process for all roots, I have extracted the
> > root list and attached, so that you can craft a bash script to delete
> > all of them.
> > (Note that above "subv sync" is not needed for each deletion if you want
> > to delete them in a batch)
> >
> > Thanks,
> > Qu
> >
> >> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
> >> # it's too large, i'll upload it to a cloud disk
> >> ```
> >>
> >> thanks!
> >>
> >>
> >>
> >> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >>>
> >>>
> >>>
> >>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> >>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
> >>>> ```
> >>>> $ sudo btrfs quota disable /
> >>>> $ sudo btrfs quota enable /
> >>>> $ sudo btrfs quota rescan -w /
> >>>> # after 22m11s
> >>>> $ sudo btrfs qgroup show -pcre /
> >>>> qgroupid         rfer         excl     max_rfer     max_excl parent
> >>>> child
> >>>> --------         ----         ----     --------     -------- ------
> >>>> -----
> >>>> 0/5          81.23GiB      6.90GiB         none         none ---
> >>>> ---
> >>>> ```
> >>>> thanks!
> >>>
> >>> Yes, dump tree output for both root and data_reloc is needed.
> >>>
> >>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
> >>> <device>", as I guess there is some ghost trees not properly deleted at
> >>> all...
> >>>
> >>> The whole thing is going crazy now.
> >>>
> >>> Thanks,
> >>> Qu
> >>>>
> >>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
> >>>> wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> >>>>>> i have rescan quota but it looks like nothing change...
> >>>>>> ```
> >>>>>> $ sudo btrfs quota rescan -w /
> >>>>>> quota rescan started
> >>>>>> # after 8m39s
> >>>>>> $ sudo btrfs qgroup show -pcre /
> >>>>>> qgroupid         rfer         excl     max_rfer     max_excl
> >>>>>> parent   child
> >>>>>> --------         ----         ----     --------     --------
> >>>>>> ------   -----
> >>>>>> 0/5          81.23GiB      6.89GiB         none         none
> >>>>>> ---      ---
> >>>>>> 0/265           0.00B        0.00B         none         none
> >>>>>> ---      ---
> >>>>>> 0/266           0.00B        0.00B         none         none
> >>>>>> ---      ---
> >>>>>> 0/267           0.00B        0.00B         none         none
> >>>>>> ---      ---
> >>>>>> 0/6482          0.00B        0.00B         none         none
> >>>>>> ---      ---
> >>>>>> 0/7501       16.00KiB     16.00KiB         none         none
> >>>>>> ---      ---
> >>>>>> 0/7502       16.00KiB     16.00KiB         none         none
> >>>>>> 255/7502 ---
> >>>>>> 0/7503       16.00KiB     16.00KiB         none         none
> >>>>>> 255/7503 ---
> >>>>>
> >>>>> This is now getting super weird now.
> >>>>>
> >>>>> Firstly, if there are some snapshots of subvolume 5, it should show up
> >>>>> here, with size over several GiB.
> >>>>>
> >>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
> >>>>> show
> >>>>> up in qgroup.
> >>>>>
> >>>>> It's possible that some qgroup is intentionally deleted, thus not
> >>>>> being
> >>>>> properly updated.
> >>>>>
> >>>>> For that case, you may want to disable qgroup, re-enable, then do a
> >>>>> rescan: (Can all be done on the running system)
> >>>>>
> >>>>> # btrfs quota disable <mnt>
> >>>>> # btrfs quota enable <mnt>
> >>>>> # btrfs quota rescan -w <mnt>
> >>>>>
> >>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
> >>>>>
> >>>>> If the output doesn't change at all, after the full 10min rescan,
> >>>>> then I
> >>>>> guess you have to dump the root tree, along with the data_reloc tree.
> >>>>>
> >>>>> # btrfs ins dump-tree -t root <device>
> >>>>> # btrfs ins dump-tree -t data_reloc <device>
> >>>>>
> >>>>> Thanks,
> >>>>> Qu
> >>>>>> 1/0             0.00B        0.00B         none         none
> >>>>>> ---      ---
> >>>>>> 255/7502     16.00KiB     16.00KiB         none         none
> >>>>>> ---      0/7502
> >>>>>> 255/7503     16.00KiB     16.00KiB         none         none
> >>>>>> ---      0/7503
> >>>>>> ```
> >>>>>>
> >>>>>> and i try to mount with option subvolid:
> >>>>>> ```
> >>>>>> $ mkdir /tmp/fulldisk
> >>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>> $ ls -lA /tmp/fulldisk
> >>>>>> total 4
> >>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> >>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> >>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> >>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> >>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> >>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> >>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> >>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> >>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> >>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> >>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> >>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> >>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> >>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> >>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> >>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> >>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> >>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> >>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> >>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
> >>>>>>         Total   Exclusive  Set shared  Filename
> >>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> >>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> >>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> >>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> >>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> >>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> >>>>>> ioctl for device
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> >>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> >>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
> >>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> >>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> >>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> >>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> >>>>>> ```
> >>>>>>
> >>>>>> because media is a symbolic link so the ERROR should be normal.
> >>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
> >>>>>> it is
> >>>>>> too weird.
> >>>>>> thanks!
> >>>>>>
> >>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
> >>>>>> wrote:
> >>>>>>>
> >>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
> >>>>>>>> Thanks! this is some information of some programs.
> >>>>>>>> ```
> >>>>>>>> # boot from liveUSB
> >>>>>>>> $ btrfs check /dev/sda2
> >>>>>>>> [1/7] checking root items
> >>>>>>>> [2/7] checking extents
> >>>>>>>> [3/7] checking free space cache
> >>>>>>>> [4/7] checking fs roots
> >>>>>>>> [5/7] checking only csums items (without verifying data)
> >>>>>>>> [6/7] checking root refs
> >>>>>>>> [7/7] checking quota groups
> >>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
> >>>>>>>
> >>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
> >>>>>>> sure you
> >>>>>>> can see all subvolumes, not just the default subvolume? I guess it
> >>>>>>> doesn't matter for quota, but it matters if you are using tools
> >>>>>>> like du.
> >>>>>>>
> >>>>>>> You don't even need to use a liveUSB. On your normal mounted
> >>>>>>> system you
> >>>>>>> can do...
> >>>>>>>
> >>>>>>> mkdir /tmp/fulldisk
> >>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>>> ls -lA /tmp/fulldisk
> >>>>>>>
> >>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-25  5:28                               ` Qu Wenruo
@ 2021-06-25  5:36                                 ` Qu Wenruo
  2021-06-26  7:17                                   ` Zhenyu Wu
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-25  5:36 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/25 下午1:28, Qu Wenruo wrote:
>
>
> On 2021/6/25 上午8:59, Qu Wenruo wrote:
>>
>>
>> On 2021/6/25 上午7:46, Qu Wenruo wrote:
>>>
>>>
>>> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
>>>> ```
>>>> $ btrfs ins dump-tree -t data_reloc
>>>> btrfs-progs v5.10.1
>>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>>>> leaf 57458688 items 2 free space 16061 generation 941500 owner
>>>> DATA_RELOC_TREE
>>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>>>> generation 3 transid 0 size 0 nbytes 16384
>>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>>>> sequence 0 flags 0x0(none)
>>>> atime 1579910090.0 (2020-01-24 23:54:50)
>>>> ctime 1579910090.0 (2020-01-24 23:54:50)
>>>> mtime 1579910090.0 (2020-01-24 23:54:50)
>>>> otime 1579910090.0 (2020-01-24 23:54:50)
>>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>>>> index 0 namelen 2 name: ..
>>>> total bytes 499972575232
>>>> bytes used 466593501184
>>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>>>> # attachment
>>>
>>> This explains everything!
>>>
>>> There are 58 root items! Meaning all of those snapshots are still taking
>>> space.
>>>
>>> Furthermore, all those roots have no backref, meaning it's already
>>> unlinked from the fs, thus btrfs subvolume list won't list them.
>>>
>>> For the worst part, they also have no orphan item marking them to be
>>> deleted.
>>> Thus they all become real ghost subvolumes.
>>>
>>> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
>>> to create 0 level qgroups, all these ghost snapshots are not created,
>>> causing the super weird result.
>>>
>>> I have no idea why this could happen, need to dig further into the code.
>>
>> A quick glance into the code, and it seems that for such ghost
>> subvolumes, "btrfs subv delete -i" may not work.
>>
>> For that case, I'll craft you a special btrfs-progs branch so that we
>> can add orphan items for those ghost roots and let them go for good.
>>
>> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
>> which you can compile btrfs-progs.
>
> Here you go, please use the branch of btrfs-progs in LiveUSB:
>
> https://github.com/adam900710/btrfs-progs/tree/dirty_fixes

Forgot to mention, I have tested the tool locally without problem.

But even if the tool crashes by somehow, it shouldn't change any thing
of your fs, so feel free to use it.

After digging into the kernel code, kernel will just drop snapshots one
by one, thus the limit is not really needed.

You can change the line of "u64 orphan_roots[4] = { 0 };" to
"u64 orphan_roots[64] = { 0 }", which will cover all your ghosts roots
in one go.

For the formal fix, I'll enhance btrfs-check to detect and fix the
problem soon, but I'm afraid you have to use the dirty fix branch for now.

Thanks,
Qu
>
> It enhances btrfs-progs/btrfs-corrupt-block command (I know it's scary,
> but trust me, I make the extra option to be extra safe).
>
> Now in your liveUSB, make sure your fs is not mounted first.
>
> Then go the following loop:
>
> # ./btrfs-corrupt-block -X <device>
>
> It will output which roots are ghosts and will add back orphan items for
> them.
>
> # mount <device> <mnt>
>
> # btrfs subv sync <mnt>
>
> It will wait for the 4 subvolumes to be deleted.
>
> # umount <mnt>
>
> Then go back to "corrupt-block -X" command and continue.
> I made the command to only add orphans to at most 4 subvolumes, to make
> sure we won't trigger too many deletions at the same time.
>
> If you don't want above loop (you need to go at least 15 loops), nor
> want to craft a small script to do that, I can change the code to do all
> of them in one go, but I'm not sure if it's OK for the kernel to handle
> so many orphan roots.
>
> BTW, since you have qgroup enabled, it will make subvolume deletion
> pretty slow, it's recommended to disable qgroup first. >
> Thanks,
> Qu
>>
>> Thanks,
>> Qu
>>>
>>> But for now, you can try to delete all these 58 subvolumes by their
>>> subvolume ID.
>>>
>>> You can try this as a quick test:
>>>
>>> # btrfs subv delete -i 6317 <mnt>
>>> # btrfs subv sync <mnt>
>>>
>>> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
>>>
>>> If it's gone, repeat the process for all roots, I have extracted the
>>> root list and attached, so that you can craft a bash script to delete
>>> all of them.
>>> (Note that above "subv sync" is not needed for each deletion if you want
>>> to delete them in a batch)
>>>
>>> Thanks,
>>> Qu
>>>
>>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>>>> # it's too large, i'll upload it to a cloud disk
>>>> ```
>>>>
>>>> thanks!
>>>>
>>>>
>>>>
>>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>> wrote:
>>>>>
>>>>>
>>>>>
>>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>>>>> ```
>>>>>> $ sudo btrfs quota disable /
>>>>>> $ sudo btrfs quota enable /
>>>>>> $ sudo btrfs quota rescan -w /
>>>>>> # after 22m11s
>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
>>>>>> child
>>>>>> --------         ----         ----     --------     -------- ------
>>>>>> -----
>>>>>> 0/5          81.23GiB      6.90GiB         none         none ---
>>>>>> ---
>>>>>> ```
>>>>>> thanks!
>>>>>
>>>>> Yes, dump tree output for both root and data_reloc is needed.
>>>>>
>>>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>>>>> <device>", as I guess there is some ghost trees not properly
>>>>> deleted at
>>>>> all...
>>>>>
>>>>> The whole thing is going crazy now.
>>>>>
>>>>> Thanks,
>>>>> Qu
>>>>>>
>>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>>>> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>>>> i have rescan quota but it looks like nothing change...
>>>>>>>> ```
>>>>>>>> $ sudo btrfs quota rescan -w /
>>>>>>>> quota rescan started
>>>>>>>> # after 8m39s
>>>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
>>>>>>>> parent   child
>>>>>>>> --------         ----         ----     --------     --------
>>>>>>>> ------   -----
>>>>>>>> 0/5          81.23GiB      6.89GiB         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/265           0.00B        0.00B         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/266           0.00B        0.00B         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/267           0.00B        0.00B         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/6482          0.00B        0.00B         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
>>>>>>>> ---      ---
>>>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
>>>>>>>> 255/7502 ---
>>>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
>>>>>>>> 255/7503 ---
>>>>>>>
>>>>>>> This is now getting super weird now.
>>>>>>>
>>>>>>> Firstly, if there are some snapshots of subvolume 5, it should
>>>>>>> show up
>>>>>>> here, with size over several GiB.
>>>>>>>
>>>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
>>>>>>> show
>>>>>>> up in qgroup.
>>>>>>>
>>>>>>> It's possible that some qgroup is intentionally deleted, thus not
>>>>>>> being
>>>>>>> properly updated.
>>>>>>>
>>>>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>>>>> rescan: (Can all be done on the running system)
>>>>>>>
>>>>>>> # btrfs quota disable <mnt>
>>>>>>> # btrfs quota enable <mnt>
>>>>>>> # btrfs quota rescan -w <mnt>
>>>>>>>
>>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>>>
>>>>>>> If the output doesn't change at all, after the full 10min rescan,
>>>>>>> then I
>>>>>>> guess you have to dump the root tree, along with the data_reloc
>>>>>>> tree.
>>>>>>>
>>>>>>> # btrfs ins dump-tree -t root <device>
>>>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Qu
>>>>>>>> 1/0             0.00B        0.00B         none         none
>>>>>>>> ---      ---
>>>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
>>>>>>>> ---      0/7502
>>>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
>>>>>>>> ---      0/7503
>>>>>>>> ```
>>>>>>>>
>>>>>>>> and i try to mount with option subvolid:
>>>>>>>> ```
>>>>>>>> $ mkdir /tmp/fulldisk
>>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>> $ ls -lA /tmp/fulldisk
>>>>>>>> total 4
>>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>>>         Total   Exclusive  Set shared  Filename
>>>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>>>>> ioctl for device
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>>>> ```
>>>>>>>>
>>>>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
>>>>>>>> it is
>>>>>>>> too weird.
>>>>>>>> thanks!
>>>>>>>>
>>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>>>> ```
>>>>>>>>>> # boot from liveUSB
>>>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>>>> [1/7] checking root items
>>>>>>>>>> [2/7] checking extents
>>>>>>>>>> [3/7] checking free space cache
>>>>>>>>>> [4/7] checking fs roots
>>>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>>>> [6/7] checking root refs
>>>>>>>>>> [7/7] checking quota groups
>>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>>>
>>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
>>>>>>>>> sure you
>>>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>>>>> doesn't matter for quota, but it matters if you are using tools
>>>>>>>>> like du.
>>>>>>>>>
>>>>>>>>> You don't even need to use a liveUSB. On your normal mounted
>>>>>>>>> system you
>>>>>>>>> can do...
>>>>>>>>>
>>>>>>>>> mkdir /tmp/fulldisk
>>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>>>
>>>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-25  5:36                                 ` Qu Wenruo
@ 2021-06-26  7:17                                   ` Zhenyu Wu
  2021-06-26  8:05                                     ` Qu Wenruo
  0 siblings, 1 reply; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-26  7:17 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

Thank you very much!

i spend about one whole day to delete 58 ghosts and now i have about
370GiB free space. now i have enough space to snapper to make
snapshots. without your help, it is impossible.

and i want to know if this circumstance which ghosts exist will
happened again? i need to do the same operation to delete these
ghosts? thanks!

btw, if i `btrfs-corrupt-block -X /dev/sda2` again, it will
```
$ ./btrfs-corrupt-block -X /dev/sda2
Root XXXX is a ghost
# repeat 4 times
Inserted orhpan item for root XXXX
# repeat 4 times
Please mount the fs and kernel will try to delete above roots
$ ./btrfs-corrupt-block -X /dev/sda2
Root XXXX is a ghost
# repeat 4 times
btrfs-corrupt-block.c:1182: mark_roots_orphan: Assertion `ret == 0`
failed, value 0
./btrfs-corrupt-block(main+0x78d)[0x55df0ffee925]
/lib64/libc.so.6(__libc_start_main+0xcd)[0x7f72c889f7ed]
./btrfs-corrupt-block(_start+0x2a)[0x55df0ffe083a]
Aborted
```
it will not harm my data, will it?
thanks!

On Fri, Jun 25, 2021 at 1:36 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/25 下午1:28, Qu Wenruo wrote:
> >
> >
> > On 2021/6/25 上午8:59, Qu Wenruo wrote:
> >>
> >>
> >> On 2021/6/25 上午7:46, Qu Wenruo wrote:
> >>>
> >>>
> >>> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
> >>>> ```
> >>>> $ btrfs ins dump-tree -t data_reloc
> >>>> btrfs-progs v5.10.1
> >>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
> >>>> leaf 57458688 items 2 free space 16061 generation 941500 owner
> >>>> DATA_RELOC_TREE
> >>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
> >>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
> >>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
> >>>> generation 3 transid 0 size 0 nbytes 16384
> >>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
> >>>> sequence 0 flags 0x0(none)
> >>>> atime 1579910090.0 (2020-01-24 23:54:50)
> >>>> ctime 1579910090.0 (2020-01-24 23:54:50)
> >>>> mtime 1579910090.0 (2020-01-24 23:54:50)
> >>>> otime 1579910090.0 (2020-01-24 23:54:50)
> >>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
> >>>> index 0 namelen 2 name: ..
> >>>> total bytes 499972575232
> >>>> bytes used 466593501184
> >>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
> >>>> # attachment
> >>>
> >>> This explains everything!
> >>>
> >>> There are 58 root items! Meaning all of those snapshots are still taking
> >>> space.
> >>>
> >>> Furthermore, all those roots have no backref, meaning it's already
> >>> unlinked from the fs, thus btrfs subvolume list won't list them.
> >>>
> >>> For the worst part, they also have no orphan item marking them to be
> >>> deleted.
> >>> Thus they all become real ghost subvolumes.
> >>>
> >>> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
> >>> to create 0 level qgroups, all these ghost snapshots are not created,
> >>> causing the super weird result.
> >>>
> >>> I have no idea why this could happen, need to dig further into the code.
> >>
> >> A quick glance into the code, and it seems that for such ghost
> >> subvolumes, "btrfs subv delete -i" may not work.
> >>
> >> For that case, I'll craft you a special btrfs-progs branch so that we
> >> can add orphan items for those ghost roots and let them go for good.
> >>
> >> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
> >> which you can compile btrfs-progs.
> >
> > Here you go, please use the branch of btrfs-progs in LiveUSB:
> >
> > https://github.com/adam900710/btrfs-progs/tree/dirty_fixes
>
> Forgot to mention, I have tested the tool locally without problem.
>
> But even if the tool crashes by somehow, it shouldn't change any thing
> of your fs, so feel free to use it.
>
> After digging into the kernel code, kernel will just drop snapshots one
> by one, thus the limit is not really needed.
>
> You can change the line of "u64 orphan_roots[4] = { 0 };" to
> "u64 orphan_roots[64] = { 0 }", which will cover all your ghosts roots
> in one go.
>
> For the formal fix, I'll enhance btrfs-check to detect and fix the
> problem soon, but I'm afraid you have to use the dirty fix branch for now.
>
> Thanks,
> Qu
> >
> > It enhances btrfs-progs/btrfs-corrupt-block command (I know it's scary,
> > but trust me, I make the extra option to be extra safe).
> >
> > Now in your liveUSB, make sure your fs is not mounted first.
> >
> > Then go the following loop:
> >
> > # ./btrfs-corrupt-block -X <device>
> >
> > It will output which roots are ghosts and will add back orphan items for
> > them.
> >
> > # mount <device> <mnt>
> >
> > # btrfs subv sync <mnt>
> >
> > It will wait for the 4 subvolumes to be deleted.
> >
> > # umount <mnt>
> >
> > Then go back to "corrupt-block -X" command and continue.
> > I made the command to only add orphans to at most 4 subvolumes, to make
> > sure we won't trigger too many deletions at the same time.
> >
> > If you don't want above loop (you need to go at least 15 loops), nor
> > want to craft a small script to do that, I can change the code to do all
> > of them in one go, but I'm not sure if it's OK for the kernel to handle
> > so many orphan roots.
> >
> > BTW, since you have qgroup enabled, it will make subvolume deletion
> > pretty slow, it's recommended to disable qgroup first. >
> > Thanks,
> > Qu
> >>
> >> Thanks,
> >> Qu
> >>>
> >>> But for now, you can try to delete all these 58 subvolumes by their
> >>> subvolume ID.
> >>>
> >>> You can try this as a quick test:
> >>>
> >>> # btrfs subv delete -i 6317 <mnt>
> >>> # btrfs subv sync <mnt>
> >>>
> >>> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
> >>>
> >>> If it's gone, repeat the process for all roots, I have extracted the
> >>> root list and attached, so that you can craft a bash script to delete
> >>> all of them.
> >>> (Note that above "subv sync" is not needed for each deletion if you want
> >>> to delete them in a batch)
> >>>
> >>> Thanks,
> >>> Qu
> >>>
> >>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
> >>>> # it's too large, i'll upload it to a cloud disk
> >>>> ```
> >>>>
> >>>> thanks!
> >>>>
> >>>>
> >>>>
> >>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
> >>>> wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> >>>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
> >>>>>> ```
> >>>>>> $ sudo btrfs quota disable /
> >>>>>> $ sudo btrfs quota enable /
> >>>>>> $ sudo btrfs quota rescan -w /
> >>>>>> # after 22m11s
> >>>>>> $ sudo btrfs qgroup show -pcre /
> >>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
> >>>>>> child
> >>>>>> --------         ----         ----     --------     -------- ------
> >>>>>> -----
> >>>>>> 0/5          81.23GiB      6.90GiB         none         none ---
> >>>>>> ---
> >>>>>> ```
> >>>>>> thanks!
> >>>>>
> >>>>> Yes, dump tree output for both root and data_reloc is needed.
> >>>>>
> >>>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
> >>>>> <device>", as I guess there is some ghost trees not properly
> >>>>> deleted at
> >>>>> all...
> >>>>>
> >>>>> The whole thing is going crazy now.
> >>>>>
> >>>>> Thanks,
> >>>>> Qu
> >>>>>>
> >>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
> >>>>>> wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> >>>>>>>> i have rescan quota but it looks like nothing change...
> >>>>>>>> ```
> >>>>>>>> $ sudo btrfs quota rescan -w /
> >>>>>>>> quota rescan started
> >>>>>>>> # after 8m39s
> >>>>>>>> $ sudo btrfs qgroup show -pcre /
> >>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
> >>>>>>>> parent   child
> >>>>>>>> --------         ----         ----     --------     --------
> >>>>>>>> ------   -----
> >>>>>>>> 0/5          81.23GiB      6.89GiB         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/265           0.00B        0.00B         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/266           0.00B        0.00B         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/267           0.00B        0.00B         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/6482          0.00B        0.00B         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
> >>>>>>>> 255/7502 ---
> >>>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
> >>>>>>>> 255/7503 ---
> >>>>>>>
> >>>>>>> This is now getting super weird now.
> >>>>>>>
> >>>>>>> Firstly, if there are some snapshots of subvolume 5, it should
> >>>>>>> show up
> >>>>>>> here, with size over several GiB.
> >>>>>>>
> >>>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
> >>>>>>> show
> >>>>>>> up in qgroup.
> >>>>>>>
> >>>>>>> It's possible that some qgroup is intentionally deleted, thus not
> >>>>>>> being
> >>>>>>> properly updated.
> >>>>>>>
> >>>>>>> For that case, you may want to disable qgroup, re-enable, then do a
> >>>>>>> rescan: (Can all be done on the running system)
> >>>>>>>
> >>>>>>> # btrfs quota disable <mnt>
> >>>>>>> # btrfs quota enable <mnt>
> >>>>>>> # btrfs quota rescan -w <mnt>
> >>>>>>>
> >>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
> >>>>>>>
> >>>>>>> If the output doesn't change at all, after the full 10min rescan,
> >>>>>>> then I
> >>>>>>> guess you have to dump the root tree, along with the data_reloc
> >>>>>>> tree.
> >>>>>>>
> >>>>>>> # btrfs ins dump-tree -t root <device>
> >>>>>>> # btrfs ins dump-tree -t data_reloc <device>
> >>>>>>>
> >>>>>>> Thanks,
> >>>>>>> Qu
> >>>>>>>> 1/0             0.00B        0.00B         none         none
> >>>>>>>> ---      ---
> >>>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
> >>>>>>>> ---      0/7502
> >>>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
> >>>>>>>> ---      0/7503
> >>>>>>>> ```
> >>>>>>>>
> >>>>>>>> and i try to mount with option subvolid:
> >>>>>>>> ```
> >>>>>>>> $ mkdir /tmp/fulldisk
> >>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>>>> $ ls -lA /tmp/fulldisk
> >>>>>>>> total 4
> >>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> >>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> >>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> >>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> >>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> >>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> >>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> >>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> >>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> >>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> >>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> >>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> >>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> >>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> >>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> >>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> >>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> >>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> >>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> >>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
> >>>>>>>>         Total   Exclusive  Set shared  Filename
> >>>>>>>>      10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> >>>>>>>>      33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> >>>>>>>>      13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> >>>>>>>>     922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> >>>>>>>>      23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> >>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> >>>>>>>> ioctl for device
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> >>>>>>>>      11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> >>>>>>>>      40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/run
> >>>>>>>>      26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> >>>>>>>>         0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> >>>>>>>>      47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> >>>>>>>>       5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> >>>>>>>> ```
> >>>>>>>>
> >>>>>>>> because media is a symbolic link so the ERROR should be normal.
> >>>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
> >>>>>>>> it is
> >>>>>>>> too weird.
> >>>>>>>> thanks!
> >>>>>>>>
> >>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
> >>>>>>>> wrote:
> >>>>>>>>>
> >>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
> >>>>>>>>>> Thanks! this is some information of some programs.
> >>>>>>>>>> ```
> >>>>>>>>>> # boot from liveUSB
> >>>>>>>>>> $ btrfs check /dev/sda2
> >>>>>>>>>> [1/7] checking root items
> >>>>>>>>>> [2/7] checking extents
> >>>>>>>>>> [3/7] checking free space cache
> >>>>>>>>>> [4/7] checking fs roots
> >>>>>>>>>> [5/7] checking only csums items (without verifying data)
> >>>>>>>>>> [6/7] checking root refs
> >>>>>>>>>> [7/7] checking quota groups
> >>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
> >>>>>>>>>
> >>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
> >>>>>>>>> sure you
> >>>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
> >>>>>>>>> doesn't matter for quota, but it matters if you are using tools
> >>>>>>>>> like du.
> >>>>>>>>>
> >>>>>>>>> You don't even need to use a liveUSB. On your normal mounted
> >>>>>>>>> system you
> >>>>>>>>> can do...
> >>>>>>>>>
> >>>>>>>>> mkdir /tmp/fulldisk
> >>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>>>>> ls -lA /tmp/fulldisk
> >>>>>>>>>
> >>>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-26  7:17                                   ` Zhenyu Wu
@ 2021-06-26  8:05                                     ` Qu Wenruo
  2021-06-26  8:17                                       ` Zhenyu Wu
  0 siblings, 1 reply; 24+ messages in thread
From: Qu Wenruo @ 2021-06-26  8:05 UTC (permalink / raw)
  To: Zhenyu Wu; +Cc: Graham Cobb, Su Yue, linux-btrfs



On 2021/6/26 下午3:17, Zhenyu Wu wrote:
> Thank you very much!
>
> i spend about one whole day to delete 58 ghosts and now i have about
> 370GiB free space. now i have enough space to snapper to make
> snapshots. without your help, it is impossible.

It takes much longer than I thought, thus I guess maybe qgroup is
heavily slowing down the process?

>
> and i want to know if this circumstance which ghosts exist will
> happened again? i need to do the same operation to delete these
> ghosts? thanks!

Looking into the subvolume deletion code, the orphan item and subvolume
unlink all happen inside one transaction, thus it should not be possible
to have subvolume unlinked but no orphan item.

Maybe it's some special race/corner case where we inserted orphan item
first, but I don't have a clue yet.

I guess it could be related to the btrfs-zero-log call, but I'm not
familiar enough to log tree code thus hard to say.


Personally speaking, it shouldn't be an easy thing to trigger such
situation anyway.
If it happens again, please let us know, with the history so that we
could have a better clue.

>
> btw, if i `btrfs-corrupt-block -X /dev/sda2` again, it will
> ```
> $ ./btrfs-corrupt-block -X /dev/sda2
> Root XXXX is a ghost
> # repeat 4 times
> Inserted orhpan item for root XXXX
> # repeat 4 times
> Please mount the fs and kernel will try to delete above roots
> $ ./btrfs-corrupt-block -X /dev/sda2
> Root XXXX is a ghost
> # repeat 4 times
> btrfs-corrupt-block.c:1182: mark_roots_orphan: Assertion `ret == 0`
> failed, value 0
> ./btrfs-corrupt-block(main+0x78d)[0x55df0ffee925]
> /lib64/libc.so.6(__libc_start_main+0xcd)[0x7f72c889f7ed]
> ./btrfs-corrupt-block(_start+0x2a)[0x55df0ffe083a]
> Aborted
> ```
> it will not harm my data, will it?

If it crashes, it won't write anything to your fs, thus you're
completely safe.

In fact, for your case, it's btrfs_insert_empty_item(), which means the
orphan item is already inserted, and you're completely safe.

I just didn't take the error handling too series as it's just a dirty hack.

We should have proper btrfs check for such case soon, thanks to your
report and test!

Thanks,
Qu

> thanks!
>
> On Fri, Jun 25, 2021 at 1:36 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>>
>>
>>
>> On 2021/6/25 下午1:28, Qu Wenruo wrote:
>>>
>>>
>>> On 2021/6/25 上午8:59, Qu Wenruo wrote:
>>>>
>>>>
>>>> On 2021/6/25 上午7:46, Qu Wenruo wrote:
>>>>>
>>>>>
>>>>> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
>>>>>> ```
>>>>>> $ btrfs ins dump-tree -t data_reloc
>>>>>> btrfs-progs v5.10.1
>>>>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
>>>>>> leaf 57458688 items 2 free space 16061 generation 941500 owner
>>>>>> DATA_RELOC_TREE
>>>>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
>>>>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
>>>>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
>>>>>> generation 3 transid 0 size 0 nbytes 16384
>>>>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
>>>>>> sequence 0 flags 0x0(none)
>>>>>> atime 1579910090.0 (2020-01-24 23:54:50)
>>>>>> ctime 1579910090.0 (2020-01-24 23:54:50)
>>>>>> mtime 1579910090.0 (2020-01-24 23:54:50)
>>>>>> otime 1579910090.0 (2020-01-24 23:54:50)
>>>>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
>>>>>> index 0 namelen 2 name: ..
>>>>>> total bytes 499972575232
>>>>>> bytes used 466593501184
>>>>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
>>>>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
>>>>>> # attachment
>>>>>
>>>>> This explains everything!
>>>>>
>>>>> There are 58 root items! Meaning all of those snapshots are still taking
>>>>> space.
>>>>>
>>>>> Furthermore, all those roots have no backref, meaning it's already
>>>>> unlinked from the fs, thus btrfs subvolume list won't list them.
>>>>>
>>>>> For the worst part, they also have no orphan item marking them to be
>>>>> deleted.
>>>>> Thus they all become real ghost subvolumes.
>>>>>
>>>>> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
>>>>> to create 0 level qgroups, all these ghost snapshots are not created,
>>>>> causing the super weird result.
>>>>>
>>>>> I have no idea why this could happen, need to dig further into the code.
>>>>
>>>> A quick glance into the code, and it seems that for such ghost
>>>> subvolumes, "btrfs subv delete -i" may not work.
>>>>
>>>> For that case, I'll craft you a special btrfs-progs branch so that we
>>>> can add orphan items for those ghost roots and let them go for good.
>>>>
>>>> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
>>>> which you can compile btrfs-progs.
>>>
>>> Here you go, please use the branch of btrfs-progs in LiveUSB:
>>>
>>> https://github.com/adam900710/btrfs-progs/tree/dirty_fixes
>>
>> Forgot to mention, I have tested the tool locally without problem.
>>
>> But even if the tool crashes by somehow, it shouldn't change any thing
>> of your fs, so feel free to use it.
>>
>> After digging into the kernel code, kernel will just drop snapshots one
>> by one, thus the limit is not really needed.
>>
>> You can change the line of "u64 orphan_roots[4] = { 0 };" to
>> "u64 orphan_roots[64] = { 0 }", which will cover all your ghosts roots
>> in one go.
>>
>> For the formal fix, I'll enhance btrfs-check to detect and fix the
>> problem soon, but I'm afraid you have to use the dirty fix branch for now.
>>
>> Thanks,
>> Qu
>>>
>>> It enhances btrfs-progs/btrfs-corrupt-block command (I know it's scary,
>>> but trust me, I make the extra option to be extra safe).
>>>
>>> Now in your liveUSB, make sure your fs is not mounted first.
>>>
>>> Then go the following loop:
>>>
>>> # ./btrfs-corrupt-block -X <device>
>>>
>>> It will output which roots are ghosts and will add back orphan items for
>>> them.
>>>
>>> # mount <device> <mnt>
>>>
>>> # btrfs subv sync <mnt>
>>>
>>> It will wait for the 4 subvolumes to be deleted.
>>>
>>> # umount <mnt>
>>>
>>> Then go back to "corrupt-block -X" command and continue.
>>> I made the command to only add orphans to at most 4 subvolumes, to make
>>> sure we won't trigger too many deletions at the same time.
>>>
>>> If you don't want above loop (you need to go at least 15 loops), nor
>>> want to craft a small script to do that, I can change the code to do all
>>> of them in one go, but I'm not sure if it's OK for the kernel to handle
>>> so many orphan roots.
>>>
>>> BTW, since you have qgroup enabled, it will make subvolume deletion
>>> pretty slow, it's recommended to disable qgroup first. >
>>> Thanks,
>>> Qu
>>>>
>>>> Thanks,
>>>> Qu
>>>>>
>>>>> But for now, you can try to delete all these 58 subvolumes by their
>>>>> subvolume ID.
>>>>>
>>>>> You can try this as a quick test:
>>>>>
>>>>> # btrfs subv delete -i 6317 <mnt>
>>>>> # btrfs subv sync <mnt>
>>>>>
>>>>> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
>>>>>
>>>>> If it's gone, repeat the process for all roots, I have extracted the
>>>>> root list and attached, so that you can craft a bash script to delete
>>>>> all of them.
>>>>> (Note that above "subv sync" is not needed for each deletion if you want
>>>>> to delete them in a batch)
>>>>>
>>>>> Thanks,
>>>>> Qu
>>>>>
>>>>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
>>>>>> # it's too large, i'll upload it to a cloud disk
>>>>>> ```
>>>>>>
>>>>>> thanks!
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>>>> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
>>>>>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
>>>>>>>> ```
>>>>>>>> $ sudo btrfs quota disable /
>>>>>>>> $ sudo btrfs quota enable /
>>>>>>>> $ sudo btrfs quota rescan -w /
>>>>>>>> # after 22m11s
>>>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
>>>>>>>> child
>>>>>>>> --------         ----         ----     --------     -------- ------
>>>>>>>> -----
>>>>>>>> 0/5          81.23GiB      6.90GiB         none         none ---
>>>>>>>> ---
>>>>>>>> ```
>>>>>>>> thanks!
>>>>>>>
>>>>>>> Yes, dump tree output for both root and data_reloc is needed.
>>>>>>>
>>>>>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
>>>>>>> <device>", as I guess there is some ghost trees not properly
>>>>>>> deleted at
>>>>>>> all...
>>>>>>>
>>>>>>> The whole thing is going crazy now.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Qu
>>>>>>>>
>>>>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
>>>>>>>>>> i have rescan quota but it looks like nothing change...
>>>>>>>>>> ```
>>>>>>>>>> $ sudo btrfs quota rescan -w /
>>>>>>>>>> quota rescan started
>>>>>>>>>> # after 8m39s
>>>>>>>>>> $ sudo btrfs qgroup show -pcre /
>>>>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
>>>>>>>>>> parent   child
>>>>>>>>>> --------         ----         ----     --------     --------
>>>>>>>>>> ------   -----
>>>>>>>>>> 0/5          81.23GiB      6.89GiB         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/265           0.00B        0.00B         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/266           0.00B        0.00B         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/267           0.00B        0.00B         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/6482          0.00B        0.00B         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
>>>>>>>>>> 255/7502 ---
>>>>>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
>>>>>>>>>> 255/7503 ---
>>>>>>>>>
>>>>>>>>> This is now getting super weird now.
>>>>>>>>>
>>>>>>>>> Firstly, if there are some snapshots of subvolume 5, it should
>>>>>>>>> show up
>>>>>>>>> here, with size over several GiB.
>>>>>>>>>
>>>>>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
>>>>>>>>> show
>>>>>>>>> up in qgroup.
>>>>>>>>>
>>>>>>>>> It's possible that some qgroup is intentionally deleted, thus not
>>>>>>>>> being
>>>>>>>>> properly updated.
>>>>>>>>>
>>>>>>>>> For that case, you may want to disable qgroup, re-enable, then do a
>>>>>>>>> rescan: (Can all be done on the running system)
>>>>>>>>>
>>>>>>>>> # btrfs quota disable <mnt>
>>>>>>>>> # btrfs quota enable <mnt>
>>>>>>>>> # btrfs quota rescan -w <mnt>
>>>>>>>>>
>>>>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
>>>>>>>>>
>>>>>>>>> If the output doesn't change at all, after the full 10min rescan,
>>>>>>>>> then I
>>>>>>>>> guess you have to dump the root tree, along with the data_reloc
>>>>>>>>> tree.
>>>>>>>>>
>>>>>>>>> # btrfs ins dump-tree -t root <device>
>>>>>>>>> # btrfs ins dump-tree -t data_reloc <device>
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>> Qu
>>>>>>>>>> 1/0             0.00B        0.00B         none         none
>>>>>>>>>> ---      ---
>>>>>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
>>>>>>>>>> ---      0/7502
>>>>>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
>>>>>>>>>> ---      0/7503
>>>>>>>>>> ```
>>>>>>>>>>
>>>>>>>>>> and i try to mount with option subvolid:
>>>>>>>>>> ```
>>>>>>>>>> $ mkdir /tmp/fulldisk
>>>>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>>>> $ ls -lA /tmp/fulldisk
>>>>>>>>>> total 4
>>>>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
>>>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
>>>>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
>>>>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
>>>>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
>>>>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
>>>>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
>>>>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
>>>>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
>>>>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
>>>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
>>>>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
>>>>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
>>>>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
>>>>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
>>>>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
>>>>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
>>>>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
>>>>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
>>>>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
>>>>>>>>>>          Total   Exclusive  Set shared  Filename
>>>>>>>>>>       10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/boot
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/dev
>>>>>>>>>>       33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
>>>>>>>>>>       13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
>>>>>>>>>>      922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
>>>>>>>>>>       23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
>>>>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
>>>>>>>>>> ioctl for device
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
>>>>>>>>>>       11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/proc
>>>>>>>>>>       40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/run
>>>>>>>>>>       26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/sys
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
>>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
>>>>>>>>>>       47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
>>>>>>>>>>        5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
>>>>>>>>>> ```
>>>>>>>>>>
>>>>>>>>>> because media is a symbolic link so the ERROR should be normal.
>>>>>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
>>>>>>>>>> it is
>>>>>>>>>> too weird.
>>>>>>>>>> thanks!
>>>>>>>>>>
>>>>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
>>>>>>>>>>>> Thanks! this is some information of some programs.
>>>>>>>>>>>> ```
>>>>>>>>>>>> # boot from liveUSB
>>>>>>>>>>>> $ btrfs check /dev/sda2
>>>>>>>>>>>> [1/7] checking root items
>>>>>>>>>>>> [2/7] checking extents
>>>>>>>>>>>> [3/7] checking free space cache
>>>>>>>>>>>> [4/7] checking fs roots
>>>>>>>>>>>> [5/7] checking only csums items (without verifying data)
>>>>>>>>>>>> [6/7] checking root refs
>>>>>>>>>>>> [7/7] checking quota groups
>>>>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
>>>>>>>>>>>
>>>>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
>>>>>>>>>>> sure you
>>>>>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
>>>>>>>>>>> doesn't matter for quota, but it matters if you are using tools
>>>>>>>>>>> like du.
>>>>>>>>>>>
>>>>>>>>>>> You don't even need to use a liveUSB. On your normal mounted
>>>>>>>>>>> system you
>>>>>>>>>>> can do...
>>>>>>>>>>>
>>>>>>>>>>> mkdir /tmp/fulldisk
>>>>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
>>>>>>>>>>> ls -lA /tmp/fulldisk
>>>>>>>>>>>
>>>>>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

* Re: [question] free space of disk with btrfs is too different from other du
  2021-06-26  8:05                                     ` Qu Wenruo
@ 2021-06-26  8:17                                       ` Zhenyu Wu
  0 siblings, 0 replies; 24+ messages in thread
From: Zhenyu Wu @ 2021-06-26  8:17 UTC (permalink / raw)
  To: Qu Wenruo; +Cc: Graham Cobb, Su Yue, linux-btrfs

if i notice this situation happened again, i will report it.

Thanks!

On Sat, Jun 26, 2021 at 4:05 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>
>
>
> On 2021/6/26 下午3:17, Zhenyu Wu wrote:
> > Thank you very much!
> >
> > i spend about one whole day to delete 58 ghosts and now i have about
> > 370GiB free space. now i have enough space to snapper to make
> > snapshots. without your help, it is impossible.
>
> It takes much longer than I thought, thus I guess maybe qgroup is
> heavily slowing down the process?
>
> >
> > and i want to know if this circumstance which ghosts exist will
> > happened again? i need to do the same operation to delete these
> > ghosts? thanks!
>
> Looking into the subvolume deletion code, the orphan item and subvolume
> unlink all happen inside one transaction, thus it should not be possible
> to have subvolume unlinked but no orphan item.
>
> Maybe it's some special race/corner case where we inserted orphan item
> first, but I don't have a clue yet.
>
> I guess it could be related to the btrfs-zero-log call, but I'm not
> familiar enough to log tree code thus hard to say.
>
>
> Personally speaking, it shouldn't be an easy thing to trigger such
> situation anyway.
> If it happens again, please let us know, with the history so that we
> could have a better clue.
>
> >
> > btw, if i `btrfs-corrupt-block -X /dev/sda2` again, it will
> > ```
> > $ ./btrfs-corrupt-block -X /dev/sda2
> > Root XXXX is a ghost
> > # repeat 4 times
> > Inserted orhpan item for root XXXX
> > # repeat 4 times
> > Please mount the fs and kernel will try to delete above roots
> > $ ./btrfs-corrupt-block -X /dev/sda2
> > Root XXXX is a ghost
> > # repeat 4 times
> > btrfs-corrupt-block.c:1182: mark_roots_orphan: Assertion `ret == 0`
> > failed, value 0
> > ./btrfs-corrupt-block(main+0x78d)[0x55df0ffee925]
> > /lib64/libc.so.6(__libc_start_main+0xcd)[0x7f72c889f7ed]
> > ./btrfs-corrupt-block(_start+0x2a)[0x55df0ffe083a]
> > Aborted
> > ```
> > it will not harm my data, will it?
>
> If it crashes, it won't write anything to your fs, thus you're
> completely safe.
>
> In fact, for your case, it's btrfs_insert_empty_item(), which means the
> orphan item is already inserted, and you're completely safe.
>
> I just didn't take the error handling too series as it's just a dirty hack.
>
> We should have proper btrfs check for such case soon, thanks to your
> report and test!
>
> Thanks,
> Qu
>
> > thanks!
> >
> > On Fri, Jun 25, 2021 at 1:36 PM Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
> >>
> >>
> >>
> >> On 2021/6/25 下午1:28, Qu Wenruo wrote:
> >>>
> >>>
> >>> On 2021/6/25 上午8:59, Qu Wenruo wrote:
> >>>>
> >>>>
> >>>> On 2021/6/25 上午7:46, Qu Wenruo wrote:
> >>>>>
> >>>>>
> >>>>> On 2021/6/24 下午10:38, Zhenyu Wu wrote:
> >>>>>> ```
> >>>>>> $ btrfs ins dump-tree -t data_reloc
> >>>>>> btrfs-progs v5.10.1
> >>>>>> data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
> >>>>>> leaf 57458688 items 2 free space 16061 generation 941500 owner
> >>>>>> DATA_RELOC_TREE
> >>>>>> leaf 57458688 flags 0x1(WRITTEN) backref revision 1
> >>>>>> fs uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >>>>>> chunk uuid fa782e34-63ae-4917-ac63-bbbe56851d8b
> >>>>>> item 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160
> >>>>>> generation 3 transid 0 size 0 nbytes 16384
> >>>>>> block group 0 mode 40755 links 1 uid 0 gid 0 rdev 0
> >>>>>> sequence 0 flags 0x0(none)
> >>>>>> atime 1579910090.0 (2020-01-24 23:54:50)
> >>>>>> ctime 1579910090.0 (2020-01-24 23:54:50)
> >>>>>> mtime 1579910090.0 (2020-01-24 23:54:50)
> >>>>>> otime 1579910090.0 (2020-01-24 23:54:50)
> >>>>>> item 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12
> >>>>>> index 0 namelen 2 name: ..
> >>>>>> total bytes 499972575232
> >>>>>> bytes used 466593501184
> >>>>>> uuid 644a9e91-5e05-4f5d-a79b-e0eccd21a1a8
> >>>>>> $ btrfs ins dump-tree -t root 2>&1|tee root.txt
> >>>>>> # attachment
> >>>>>
> >>>>> This explains everything!
> >>>>>
> >>>>> There are 58 root items! Meaning all of those snapshots are still taking
> >>>>> space.
> >>>>>
> >>>>> Furthermore, all those roots have no backref, meaning it's already
> >>>>> unlinked from the fs, thus btrfs subvolume list won't list them.
> >>>>>
> >>>>> For the worst part, they also have no orphan item marking them to be
> >>>>> deleted.
> >>>>> Thus they all become real ghost subvolumes.
> >>>>>
> >>>>> And since qgroup rescan only create subvolumes based on its ROOT_REF_KEY
> >>>>> to create 0 level qgroups, all these ghost snapshots are not created,
> >>>>> causing the super weird result.
> >>>>>
> >>>>> I have no idea why this could happen, need to dig further into the code.
> >>>>
> >>>> A quick glance into the code, and it seems that for such ghost
> >>>> subvolumes, "btrfs subv delete -i" may not work.
> >>>>
> >>>> For that case, I'll craft you a special btrfs-progs branch so that we
> >>>> can add orphan items for those ghost roots and let them go for good.
> >>>>
> >>>> Thus if above "delete -i" doesn't work, please prepare a liveUSB in
> >>>> which you can compile btrfs-progs.
> >>>
> >>> Here you go, please use the branch of btrfs-progs in LiveUSB:
> >>>
> >>> https://github.com/adam900710/btrfs-progs/tree/dirty_fixes
> >>
> >> Forgot to mention, I have tested the tool locally without problem.
> >>
> >> But even if the tool crashes by somehow, it shouldn't change any thing
> >> of your fs, so feel free to use it.
> >>
> >> After digging into the kernel code, kernel will just drop snapshots one
> >> by one, thus the limit is not really needed.
> >>
> >> You can change the line of "u64 orphan_roots[4] = { 0 };" to
> >> "u64 orphan_roots[64] = { 0 }", which will cover all your ghosts roots
> >> in one go.
> >>
> >> For the formal fix, I'll enhance btrfs-check to detect and fix the
> >> problem soon, but I'm afraid you have to use the dirty fix branch for now.
> >>
> >> Thanks,
> >> Qu
> >>>
> >>> It enhances btrfs-progs/btrfs-corrupt-block command (I know it's scary,
> >>> but trust me, I make the extra option to be extra safe).
> >>>
> >>> Now in your liveUSB, make sure your fs is not mounted first.
> >>>
> >>> Then go the following loop:
> >>>
> >>> # ./btrfs-corrupt-block -X <device>
> >>>
> >>> It will output which roots are ghosts and will add back orphan items for
> >>> them.
> >>>
> >>> # mount <device> <mnt>
> >>>
> >>> # btrfs subv sync <mnt>
> >>>
> >>> It will wait for the 4 subvolumes to be deleted.
> >>>
> >>> # umount <mnt>
> >>>
> >>> Then go back to "corrupt-block -X" command and continue.
> >>> I made the command to only add orphans to at most 4 subvolumes, to make
> >>> sure we won't trigger too many deletions at the same time.
> >>>
> >>> If you don't want above loop (you need to go at least 15 loops), nor
> >>> want to craft a small script to do that, I can change the code to do all
> >>> of them in one go, but I'm not sure if it's OK for the kernel to handle
> >>> so many orphan roots.
> >>>
> >>> BTW, since you have qgroup enabled, it will make subvolume deletion
> >>> pretty slow, it's recommended to disable qgroup first. >
> >>> Thanks,
> >>> Qu
> >>>>
> >>>> Thanks,
> >>>> Qu
> >>>>>
> >>>>> But for now, you can try to delete all these 58 subvolumes by their
> >>>>> subvolume ID.
> >>>>>
> >>>>> You can try this as a quick test:
> >>>>>
> >>>>> # btrfs subv delete -i 6317 <mnt>
> >>>>> # btrfs subv sync <mnt>
> >>>>>
> >>>>> Then check if you still have "6317 ROOT_ITEM" in your root tree dump.
> >>>>>
> >>>>> If it's gone, repeat the process for all roots, I have extracted the
> >>>>> root list and attached, so that you can craft a bash script to delete
> >>>>> all of them.
> >>>>> (Note that above "subv sync" is not needed for each deletion if you want
> >>>>> to delete them in a batch)
> >>>>>
> >>>>> Thanks,
> >>>>> Qu
> >>>>>
> >>>>>> $ btrfs ins dump-tree -t extent 2>&1|tee extent.txt
> >>>>>> # it's too large, i'll upload it to a cloud disk
> >>>>>> ```
> >>>>>>
> >>>>>> thanks!
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> On Thu, Jun 24, 2021 at 8:30 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
> >>>>>> wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> On 2021/6/24 下午7:33, Zhenyu Wu wrote:
> >>>>>>>> the output has changed. do i need `btrfs ins dump-tree -t root`?
> >>>>>>>> ```
> >>>>>>>> $ sudo btrfs quota disable /
> >>>>>>>> $ sudo btrfs quota enable /
> >>>>>>>> $ sudo btrfs quota rescan -w /
> >>>>>>>> # after 22m11s
> >>>>>>>> $ sudo btrfs qgroup show -pcre /
> >>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl parent
> >>>>>>>> child
> >>>>>>>> --------         ----         ----     --------     -------- ------
> >>>>>>>> -----
> >>>>>>>> 0/5          81.23GiB      6.90GiB         none         none ---
> >>>>>>>> ---
> >>>>>>>> ```
> >>>>>>>> thanks!
> >>>>>>>
> >>>>>>> Yes, dump tree output for both root and data_reloc is needed.
> >>>>>>>
> >>>>>>> There may be a larger dump needed, "btrfs ins dump-tree -t extent
> >>>>>>> <device>", as I guess there is some ghost trees not properly
> >>>>>>> deleted at
> >>>>>>> all...
> >>>>>>>
> >>>>>>> The whole thing is going crazy now.
> >>>>>>>
> >>>>>>> Thanks,
> >>>>>>> Qu
> >>>>>>>>
> >>>>>>>> On Thu, Jun 24, 2021 at 6:07 PM Qu Wenruo <quwenruo.btrfs@gmx.com>
> >>>>>>>> wrote:
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> On 2021/6/24 下午5:52, Zhenyu Wu wrote:
> >>>>>>>>>> i have rescan quota but it looks like nothing change...
> >>>>>>>>>> ```
> >>>>>>>>>> $ sudo btrfs quota rescan -w /
> >>>>>>>>>> quota rescan started
> >>>>>>>>>> # after 8m39s
> >>>>>>>>>> $ sudo btrfs qgroup show -pcre /
> >>>>>>>>>> qgroupid         rfer         excl     max_rfer     max_excl
> >>>>>>>>>> parent   child
> >>>>>>>>>> --------         ----         ----     --------     --------
> >>>>>>>>>> ------   -----
> >>>>>>>>>> 0/5          81.23GiB      6.89GiB         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/265           0.00B        0.00B         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/266           0.00B        0.00B         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/267           0.00B        0.00B         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/6482          0.00B        0.00B         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/7501       16.00KiB     16.00KiB         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 0/7502       16.00KiB     16.00KiB         none         none
> >>>>>>>>>> 255/7502 ---
> >>>>>>>>>> 0/7503       16.00KiB     16.00KiB         none         none
> >>>>>>>>>> 255/7503 ---
> >>>>>>>>>
> >>>>>>>>> This is now getting super weird now.
> >>>>>>>>>
> >>>>>>>>> Firstly, if there are some snapshots of subvolume 5, it should
> >>>>>>>>> show up
> >>>>>>>>> here, with size over several GiB.
> >>>>>>>>>
> >>>>>>>>> Thus there seems to be some ghost/hidden subvolumes that even don't
> >>>>>>>>> show
> >>>>>>>>> up in qgroup.
> >>>>>>>>>
> >>>>>>>>> It's possible that some qgroup is intentionally deleted, thus not
> >>>>>>>>> being
> >>>>>>>>> properly updated.
> >>>>>>>>>
> >>>>>>>>> For that case, you may want to disable qgroup, re-enable, then do a
> >>>>>>>>> rescan: (Can all be done on the running system)
> >>>>>>>>>
> >>>>>>>>> # btrfs quota disable <mnt>
> >>>>>>>>> # btrfs quota enable <mnt>
> >>>>>>>>> # btrfs quota rescan -w <mnt>
> >>>>>>>>>
> >>>>>>>>> Then provide the output of 'btrfs qgroup show -prce <mnt>"
> >>>>>>>>>
> >>>>>>>>> If the output doesn't change at all, after the full 10min rescan,
> >>>>>>>>> then I
> >>>>>>>>> guess you have to dump the root tree, along with the data_reloc
> >>>>>>>>> tree.
> >>>>>>>>>
> >>>>>>>>> # btrfs ins dump-tree -t root <device>
> >>>>>>>>> # btrfs ins dump-tree -t data_reloc <device>
> >>>>>>>>>
> >>>>>>>>> Thanks,
> >>>>>>>>> Qu
> >>>>>>>>>> 1/0             0.00B        0.00B         none         none
> >>>>>>>>>> ---      ---
> >>>>>>>>>> 255/7502     16.00KiB     16.00KiB         none         none
> >>>>>>>>>> ---      0/7502
> >>>>>>>>>> 255/7503     16.00KiB     16.00KiB         none         none
> >>>>>>>>>> ---      0/7503
> >>>>>>>>>> ```
> >>>>>>>>>>
> >>>>>>>>>> and i try to mount with option subvolid:
> >>>>>>>>>> ```
> >>>>>>>>>> $ mkdir /tmp/fulldisk
> >>>>>>>>>> $ sudo mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>>>>>> $ ls -lA /tmp/fulldisk
> >>>>>>>>>> total 4
> >>>>>>>>>> drwxr-xr-x 1 root   root   1936 May  3 21:34 bin
> >>>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 25  2020 boot
> >>>>>>>>>> drwxr-xr-x 1 root   root   1686 Jan 20  2020 dev
> >>>>>>>>>> drwxr-xr-x 1 wzy    wzy    5756 Jun 24 13:51 etc
> >>>>>>>>>> drwxr-xr-x 1 root   root     22 Oct 17  2020 home
> >>>>>>>>>> drwxr-xr-x 1 root   root   1332 May 18 14:13 lib
> >>>>>>>>>> drwxr-xr-x 1 root   root   6606 May 18 14:13 lib64
> >>>>>>>>>> lrwxrwxrwx 1 root   root     10 Jan 24 20:23 media -> /run/media
> >>>>>>>>>> drwxr-xr-x 1 wzy    wzy      38 Jan 27 16:51 mnt
> >>>>>>>>>> drwxr-xr-x 1 root   root    234 Jun 18 14:29 opt
> >>>>>>>>>> drwxr-xr-x 1 root   root      0 Jan 20  2020 proc
> >>>>>>>>>> drwx------ 1 wzy    wzy     536 Jun 15 20:26 root
> >>>>>>>>>> drwxr-xr-x 1 root   root     48 May 30 14:14 run
> >>>>>>>>>> drwxr-xr-x 1 root   root   4926 May 18 14:12 sbin
> >>>>>>>>>> drwxr-xr-x 1 root   root     10 Jan 20  2020 sys
> >>>>>>>>>> drwxrwxrwx 1 nobody nobody    0 Jun 18 14:34 tftproot
> >>>>>>>>>> drwxrwxrwt 1 root   root      0 May 30 14:25 tmp
> >>>>>>>>>> drwxr-xr-x 1 root   root    198 Mar 31 19:32 usr
> >>>>>>>>>> drwxr-xr-x 1 root   root    150 Apr  1 18:21 var
> >>>>>>>>>> $ sudo btrfs fi du -s /tmp/fulldisk/*
> >>>>>>>>>>          Total   Exclusive  Set shared  Filename
> >>>>>>>>>>       10.66MiB       0.00B    10.66MiB  /tmp/fulldisk/bin
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/boot
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/dev
> >>>>>>>>>>       33.34MiB    36.00KiB    33.30MiB  /tmp/fulldisk/etc
> >>>>>>>>>>       13.79GiB   784.05MiB    12.96GiB  /tmp/fulldisk/home
> >>>>>>>>>>      922.28MiB       0.00B   922.28MiB  /tmp/fulldisk/lib
> >>>>>>>>>>       23.11MiB       0.00B    23.11MiB  /tmp/fulldisk/lib64
> >>>>>>>>>> ERROR: cannot check space of '/tmp/fulldisk/media': Inappropriate
> >>>>>>>>>> ioctl for device
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/mnt
> >>>>>>>>>>       11.08GiB       0.00B    11.08GiB  /tmp/fulldisk/opt
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/proc
> >>>>>>>>>>       40.38MiB     4.35MiB    36.03MiB  /tmp/fulldisk/root
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/run
> >>>>>>>>>>       26.62MiB       0.00B    26.62MiB  /tmp/fulldisk/sbin
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/sys
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/tftproot
> >>>>>>>>>>          0.00B       0.00B       0.00B  /tmp/fulldisk/tmp
> >>>>>>>>>>       47.22GiB     1.03GiB    46.15GiB  /tmp/fulldisk/usr
> >>>>>>>>>>        5.80GiB     4.35GiB     1.45GiB  /tmp/fulldisk/var
> >>>>>>>>>> ```
> >>>>>>>>>>
> >>>>>>>>>> because media is a symbolic link so the ERROR should be normal.
> >>>>>>>>>> according to `btrfs fi du` it looks like i only use about 80GiB.
> >>>>>>>>>> it is
> >>>>>>>>>> too weird.
> >>>>>>>>>> thanks!
> >>>>>>>>>>
> >>>>>>>>>> On Thu, Jun 24, 2021 at 4:32 PM Graham Cobb <g.btrfs@cobb.uk.net>
> >>>>>>>>>> wrote:
> >>>>>>>>>>>
> >>>>>>>>>>> On 24/06/2021 08:45, Zhenyu Wu wrote:
> >>>>>>>>>>>> Thanks! this is some information of some programs.
> >>>>>>>>>>>> ```
> >>>>>>>>>>>> # boot from liveUSB
> >>>>>>>>>>>> $ btrfs check /dev/sda2
> >>>>>>>>>>>> [1/7] checking root items
> >>>>>>>>>>>> [2/7] checking extents
> >>>>>>>>>>>> [3/7] checking free space cache
> >>>>>>>>>>>> [4/7] checking fs roots
> >>>>>>>>>>>> [5/7] checking only csums items (without verifying data)
> >>>>>>>>>>>> [6/7] checking root refs
> >>>>>>>>>>>> [7/7] checking quota groups
> >>>>>>>>>>>> # after mount /dev/sda2 to /mnt/gentoo
> >>>>>>>>>>>
> >>>>>>>>>>> Did you do 'mount -o subvolid=5 /dev/sda2 /mnt/gentoo' to make
> >>>>>>>>>>> sure you
> >>>>>>>>>>> can see all subvolumes, not just the default subvolume? I guess it
> >>>>>>>>>>> doesn't matter for quota, but it matters if you are using tools
> >>>>>>>>>>> like du.
> >>>>>>>>>>>
> >>>>>>>>>>> You don't even need to use a liveUSB. On your normal mounted
> >>>>>>>>>>> system you
> >>>>>>>>>>> can do...
> >>>>>>>>>>>
> >>>>>>>>>>> mkdir /tmp/fulldisk
> >>>>>>>>>>> mount -o subvolid=5 /dev/sda2 /tmp/fulldisk
> >>>>>>>>>>> ls -lA /tmp/fulldisk
> >>>>>>>>>>>
> >>>>>>>>>>> to see if there are other subvolumes which are not visible in /

^ permalink raw reply	[flat|nested] 24+ messages in thread

end of thread, other threads:[~2021-06-26  8:17 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-22 13:02 [question] free space of disk with btrfs is too different from other du 吴振宇
2021-06-22 14:31 ` Su Yue
     [not found]   ` <CAJ9tZB9M=KOWVLH_azagtBnxDzpV2=ssnBcYsJx6Ao8cQOELhg@mail.gmail.com>
     [not found]     ` <5yy5orgi.fsf@damenly.su>
2021-06-23 11:46       ` 吴振宇
2021-06-23 12:00         ` Qu Wenruo
2021-06-23 12:08           ` Qu Wenruo
2021-06-24  7:45             ` Zhenyu Wu
2021-06-24  7:54               ` Qu Wenruo
2021-06-24  8:32               ` Graham Cobb
2021-06-24  9:52                 ` Zhenyu Wu
2021-06-24 10:07                   ` Qu Wenruo
2021-06-24 11:33                     ` Zhenyu Wu
2021-06-24 12:30                       ` Qu Wenruo
2021-06-24 14:38                         ` Zhenyu Wu
2021-06-24 14:52                           ` Zhenyu Wu
2021-06-24 23:33                             ` Qu Wenruo
2021-06-24 23:51                               ` Su Yue
2021-06-24 23:46                           ` Qu Wenruo
2021-06-25  0:59                             ` Qu Wenruo
2021-06-25  5:28                               ` Qu Wenruo
2021-06-25  5:36                                 ` Qu Wenruo
2021-06-26  7:17                                   ` Zhenyu Wu
2021-06-26  8:05                                     ` Qu Wenruo
2021-06-26  8:17                                       ` Zhenyu Wu
2021-06-25  5:30                               ` Zhenyu Wu

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