Re: Unable to mount root fs (UBIFS volume)

[JH <jupiter.hce@gmail.com>]

Hi Richard,

On 2/15/20, Richard Weinberger <richard.weinberger@gmail.com> wrote:

> There is no mtd2.

Sorry, that was fixed, please see an updated log that the mtd2 was
actually attached "ubi0: attaching mtd2", I am wondering if I edited
the /etc/fstab wrongly to cause the sytax issue and to fail the root
mount? Here is the /etc/fstab:

ubi0:rootfs-volume /        ubifs   defaults,relatime,ro,ubi=0,vol=2 0 0
ubi0:data-volume   /data    ubifs
defaults,noatime,rw,mode=0755,ubi=0,vol=3 0 0
#/dev/root            /                    auto       defaults              1  1
proc                 /proc                proc       defaults              0  0
devpts               /dev/pts             devpts     mode=0620,gid=5       0  0
tmpfs                /run                 tmpfs
mode=0755,nodev,nosuid,strictatime 0  0
tmpfs                /var/volatile        tmpfs      defaults              0  0

Again attached the bootargs:

=> setenv bootargs "console=ttymxc0,115200 earlycon
mtdparts=gpmi-nand:1m(boot),1m(ubootenv),-(storage) root=${root}
ubi.mtd=2,2048 noinitrd rootfstype=ubifs mem=256M rootwait=5"

=> run bootcmd;
ubi0: attaching mtd1
ubi0: scanning is finished
ubi0: attached mtd1 (name "mtd=2", size 254 MiB)
ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
ubi0: good PEBs: 2028, bad PEBs: 4, corrupted PEBs: 0
ubi0: user volume: 4, internal volumes: 1, max. volumes count: 128
ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence
number: 591639195
ubi0: available PEBs: 0, total reserved PEBs: 2028, PEBs reserved for
bad PEB handling: 36
Read 0 bytes from volume kernel-volume to 80800000
No size specified -> Using max size (8325592)
Read 0 bytes from volume dtb-volume to 88c00000
No size specified -> Using max size (22907)
Kernel image @ 0x80800000 [ 0x000000 - 0x7f09d8 ]
## Flattened Device Tree blob at 88c00000
   Booting using the fdt blob at 0x88c00000
   Using Device Tree in place at 88c00000, end 88c0897a
ft_system_setup for mx6

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.19.75 (oe-user@oe-host) (gcc version
8.2.0 (GCC)) #1 SMP Sat Feb 15 01:18:31 UTC 2020
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
instruction cache
[    0.000000] OF: fdt: Machine model: Solar Analytics CN-44 RevD
[    0.000000] earlycon: ec_imx6q0 at MMIO 0x02020000 (options '')
[    0.000000] bootconsole [ec_imx6q0] enabled
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 64 MiB at 0x8c000000
[    0.000000] random: get_random_bytes called from
start_kernel+0x8c/0x48c with crng_init=0
[    0.000000] percpu: Embedded 18 pages/cpu s41896 r8192 d23640 u73728
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 65024
[    0.000000] Kernel command line: console=ttymxc0,115200 earlycon
mtdparts=gpmi-nand:1m(boot),1m(ubootenv),-(storage) root=
ubi.mtd=2,2048 noinitrd rootfstype=ubifs mem=256M rootwait=5
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Memory: 169124K/262144K available (11264K kernel code,
881K rwdata, 3664K rodata, 1024K init, 7648K bss, 27484K reserved,
65536K cma-reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xd0800000 - 0xff800000   ( 752 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0x(ptrval) - 0x(ptrval)   (12256 kB)
[    0.000000]       .init : 0x(ptrval) - 0x(ptrval)   (1024 kB)
[    0.000000]       .data : 0x(ptrval) - 0x(ptrval)   ( 882 kB)
[    0.000000]        .bss : 0x(ptrval) - 0x(ptrval)   (7649 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Running RCU self tests
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu:     RCU event tracing is enabled.
[    0.000000] rcu:     RCU lockdep checking is enabled.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] Switching to timer-based delay loop, resolution 41ns
[    0.000022] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps
every 89478484971ns
[    0.007842] clocksource: mxc_timer1: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 79635851949 ns
[    0.020230] Console: colour dummy device 80x30
[    0.021910] Lock dependency validator: Copyright (c) 2006 Red Hat,
Inc., Ingo Molnar
[    0.029966] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.033731] ... MAX_LOCK_DEPTH:          48
[    0.037904] ... MAX_LOCKDEP_KEYS:        8191
[    0.042366] ... CLASSHASH_SIZE:          4096
[    0.046608] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.051043] ... MAX_LOCKDEP_CHAINS:      65536
[    0.055578] ... CHAINHASH_SIZE:          32768
[    0.059918]  memory used by lock dependency info: 4655 kB
[    0.065311]  per task-struct memory footprint: 1536 bytes
[    0.070908] Calibrating delay loop (skipped), value calculated
using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.081166] pid_max: default: 32768 minimum: 301
[    0.086495] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.092430] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.103686] CPU: Testing write buffer coherency: ok
[    0.108054] /cpus/cpu@0 missing clock-frequency property
[    0.111262] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.122926] Setting up static identity map for 0x80100000 - 0x80100078
[    0.128297] rcu: Hierarchical SRCU implementation.
[    0.137058] smp: Bringing up secondary CPUs ...
[    0.139018] smp: Brought up 1 node, 1 CPU
[    0.142814] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[    0.149122] CPU: All CPU(s) started in SVC mode.
[    0.158834] devtmpfs: initialized
[    0.200877] VFP support v0.3: implementor 41 architecture 2 part 30
variant 7 rev 5
[    0.207710] clocksource: jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.215990] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.228488] pinctrl core: initialized pinctrl subsystem
[    0.240456] NET: Registered protocol family 16
[    0.321590] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.334161] cpuidle: using governor menu
[    0.376204] vdd3p0: supplied by regulator-dummy
[    0.382644] cpu: supplied by regulator-dummy
[    0.388572] vddsoc: supplied by regulator-dummy
[    0.440042] No ATAGs?
[    0.440618] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4
watchpoint registers.
[    0.448182] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.466390] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[    0.472528] imx6ul-pinctrl 2290000.iomuxc-snvs: no groups defined
in /soc/aips-bus@2200000/iomuxc-snvs@2290000
[    0.480632] imx6ul-pinctrl 2290000.iomuxc-snvs: initialized IMX
pinctrl driver
[    0.651410] mxs-dma 1804000.dma-apbh: initialized
[    0.665027] vgaarb: loaded
[    0.668106] SCSI subsystem initialized
[    0.672658] usbcore: registered new interface driver usbfs
[    0.676351] usbcore: registered new interface driver hub
[    0.681241] usbcore: registered new device driver usb
[    0.690008] media: Linux media interface: v0.10
[    0.692049] videodev: Linux video capture interface: v2.00
[    0.698507] pps_core: LinuxPPS API ver. 1 registered
[    0.702192] pps_core: Software ver. 5.3.6 - Copyright 2005-2007
Rodolfo Giometti <giometti@linux.it>
[    0.711667] PTP clock support registered
[    0.717581] Advanced Linux Sound Architecture Driver Initialized.
[    0.727606] Bluetooth: Core ver 2.22
[    0.728679] NET: Registered protocol family 31
[    0.733056] Bluetooth: HCI device and connection manager initialized
[    0.739354] Bluetooth: HCI socket layer initialized
[    0.744269] Bluetooth: L2CAP socket layer initialized
[    0.749544] Bluetooth: SCO socket layer initialized
[    0.759205] clocksource: Switched to clocksource mxc_timer1
[    1.421313] VFS: Disk quotas dquot_6.6.0
[    1.422876] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.508326] NET: Registered protocol family 2
[    1.514993] tcp_listen_portaddr_hash hash table entries: 128
(order: 0, 5120 bytes)
[    1.520544] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[    1.526979] TCP bind hash table entries: 2048 (order: 4, 73728 bytes)
[    1.534231] TCP: Hash tables configured (established 2048 bind 2048)
[    1.541016] UDP hash table entries: 256 (order: 2, 20480 bytes)
[    1.545775] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes)
[    1.553585] NET: Registered protocol family 1
[    1.561852] RPC: Registered named UNIX socket transport module.
[    1.565063] RPC: Registered udp transport module.
[    1.569988] RPC: Registered tcp transport module.
[    1.574433] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.600078] Initialise system trusted keyrings
[    1.603405] workingset: timestamp_bits=30 max_order=16 bucket_order=0
[    1.658901] NFS: Registering the id_resolver key type
[    1.661878] Key type id_resolver registered
[    1.665374] Key type id_legacy registered
[    1.669948] jffs2: version 2.2. (NAND) �© 2001-2006 Red Hat, Inc.
[    1.680079] fuse init (API version 7.27)
[    1.726230] Key type asymmetric registered
[    1.727747] Asymmetric key parser 'x509' registered
[    1.734699] io scheduler noop registered
[    1.736343] io scheduler deadline registered
[    1.742878] io scheduler cfq registered (default)
[    1.745303] io scheduler mq-deadline registered
[    1.750283] io scheduler kyber registered
[    1.797214] imx-sdma 20ec000.sdma: Direct firmware load for
imx/sdma/sdma-imx6q.bin failed with error -2
[    1.804604] imx-sdma 20ec000.sdma: external firmware not found,
using ROM firmware
[    1.824059] console [ttymxc0] enabled
[    1.827951] bootconsole [ec_imx6q0] disabled
[    1.841671] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 49,
base_baud = 5000000) is a IMX
[    1.856113] 21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 50,
base_baud = 5000000) is a IMX
[    1.971409] brd: module loaded
[    2.046973] loop: module loaded
[    2.075101] random: fast init done
[    2.106567] nand: device found, Manufacturer ID: 0xef, Chip ID: 0xda
[    2.113307] nand: Winbond W29N02GV
[    2.116842] nand: 256 MiB, SLC, erase size: 128 KiB, page size:
2048, OOB size: 64
[    2.131214] Bad block table found at page 131008, version 0x01
[    2.138309] Bad block table found at page 130944, version 0x01
[    2.146101] 3 cmdlinepart partitions found on MTD device gpmi-nand
[    2.152634] Creating 3 MTD partitions on "gpmi-nand":
[    2.157843] 0x000000000000-0x000000100000 : "boot"
[    2.175020] 0x000000100000-0x000000200000 : "ubootenv"
[    2.189695] 0x000000200000-0x000010000000 : "storage"
[    2.610333] gpmi-nand 1806000.gpmi-nand: driver registered.
[    2.625907] libphy: Fixed MDIO Bus: probed
[    2.634113] CAN device driver interface
[    2.645496] usbcore: registered new interface driver asix
[    2.651574] usbcore: registered new interface driver ax88179_178a
[    2.658066] usbcore: registered new interface driver cdc_ether
[    2.664534] usbcore: registered new interface driver net1080
[    2.670779] usbcore: registered new interface driver cdc_subset
[    2.677074] usbcore: registered new interface driver zaurus
[    2.683381] usbcore: registered new interface driver cdc_ncm
[    2.689620] usbcore: registered new interface driver qmi_wwan
[    2.695501] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.702316] ehci-pci: EHCI PCI platform driver
[    2.707168] ehci-mxc: Freescale On-Chip EHCI Host driver
[    2.714921] usbcore: registered new interface driver cdc_wdm
[    2.721339] usbcore: registered new interface driver usb-storage
[    3.025086] imx_usb 2184200.usb: 2184200.usb supply vbus not found,
using dummy regulator
[    3.034565] imx_usb 2184200.usb: Linked as a consumer to regulator.0
[    3.047616] ci_hdrc ci_hdrc.1: EHCI Host Controller
[    3.053461] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[    3.089416] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[    3.104798] hub 1-0:1.0: USB hub found
[    3.109957] hub 1-0:1.0: 1 port detected
[    3.131624] input: 20cc000.snvs:snvs-powerkey as
/devices/soc0/soc/2000000.aips-bus/20cc000.snvs/20cc000.snvs:snvs-powerkey/input/input0
[    3.163344] snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered
20cc000.snvs:snvs-rtc-lp as rtc0
[    3.174107] i2c /dev entries driver
[    3.196218] imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0)
[    3.204822] Bluetooth: HCI UART driver ver 2.3
[    3.209654] Bluetooth: HCI UART protocol H4 registered
[    3.216099] Bluetooth: HCI UART protocol LL registered
[    3.230914] sdhci: Secure Digital Host Controller Interface driver
[    3.237240] sdhci: Copyright(c) Pierre Ossman
[    3.241935] sdhci-pltfm: SDHCI platform and OF driver helper
[    3.252676] sdhci-esdhc-imx 2190000.usdhc: Linked as a consumer to
regulator.4
[    3.300771] mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc]
using ADMA
[    3.324292] usbcore: registered new interface driver usbhid
[    3.330247] usbhid: USB HID core driver
[    3.414207] NET: Registered protocol family 10
[    3.420499] mmc0: new high speed SDIO card at address 0001
[    3.437557] Segment Routing with IPv6
[    3.443410] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    3.455001] NET: Registered protocol family 17
[    3.460253] can: controller area network core (rev 20170425 abi 9)
[    3.467114] NET: Registered protocol family 29
[    3.471938] can: raw protocol (rev 20170425)
[    3.476570] can: broadcast manager protocol (rev 20170425 t)
[    3.483604] can: netlink gateway (rev 20170425) max_hops=1
[    3.491231] Key type dns_resolver registered
[    3.501055] cpu cpu0: Linked as a consumer to regulator.2
[    3.507345] cpu cpu0: Linked as a consumer to regulator.3
[    3.518347] cpu cpu0: failed to disable 696MHz OPP
[    3.528692] Registering SWP/SWPB emulation handler
[    3.540428] Loading compiled-in X.509 certificates
[    3.654350] imx_thermal tempmon: Commercial CPU temperature grade -
max:95C critical:90C passive:85C
[    3.667738] ubi0: default fastmap pool size: 100
[    3.672705] ubi0: default fastmap WL pool size: 50
[    3.677555] ubi0: attaching mtd2
[    5.310878] random: crng init done
[    5.811903] ubi0: scanning is finished
[    5.825036] ubi0 warning: ubi_read_volume_table: static volume 2
misses 1 LEBs - corrupted
[    5.840838] ubi0 warning: ubi_eba_init: cannot reserve enough PEBs
for bad PEB handling, reserved 34, need 36
[    5.866965] ubi0: attached mtd2 (name "storage", size 254 MiB)
[    5.873031] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[    5.880093] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    5.886932] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[    5.894018] ubi0: good PEBs: 2028, bad PEBs: 4, corrupted PEBs: 0
[    5.900239] ubi0: user volume: 4, internal volumes: 1, max. volumes
count: 128
[    5.907511] ubi0: max/mean erase counter: 1/0, WL threshold: 4096,
image sequence number: 591639195
[    5.916670] ubi0: available PEBs: 0, total reserved PEBs: 2028,
PEBs reserved for bad PEB handling: 34
[    5.926391] ubi0: background thread "ubi_bgt0d" started, PID 63
[    5.933727] snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock
to 1970-01-01 00:00:02 UTC (2)
[    5.943214] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
[    5.960159] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    5.968413] vdd3p0: disabling
[    5.971923] ALSA device list:
[    5.974951]   No soundcards found.
[    5.979992] platform regulatory.0: Direct firmware load for
regulatory.db failed with error -2
[    5.988771] cfg80211: failed to load regulatory.db
[    5.996639] List of all partitions:
[    6.000581] 0100           65536 ram0
[    6.000603]  (driver?)
[    6.006783] 0101           65536 ram1
[    6.006799]  (driver?)
[    6.013104] 0102           65536 ram2
[    6.013124]  (driver?)
[    6.019380] 0103           65536 ram3
[    6.019396]  (driver?)
[    6.025570] 0104           65536 ram4
[    6.025586]  (driver?)
[    6.031838] 0105           65536 ram5
[    6.031856]  (driver?)
[    6.038025] 0106           65536 ram6
[    6.038040]  (driver?)
[    6.044286] 0107           65536 ram7
[    6.044304]  (driver?)
[    6.050545] 0108           65536 ram8
[    6.050561]  (driver?)
[    6.056729] 0109           65536 ram9
[    6.056745]  (driver?)
[    6.062984] 010a           65536 ram10
[    6.063000]  (driver?)
[    6.069337] 010b           65536 ram11
[    6.069355]  (driver?)
[    6.075611] 010c           65536 ram12
[    6.075626]  (driver?)
[    6.081957] 010d           65536 ram13
[    6.081975]  (driver?)
[    6.088230] 010e           65536 ram14
[    6.088245]  (driver?)
[    6.094581] 010f           65536 ram15
[    6.094597]  (driver?)
[    6.100949] 1f00            1024 mtdblock0
[    6.100967]  (driver?)
[    6.107568] 1f01            1024 mtdblock1
[    6.107584]  (driver?)
[    6.114265] 1f02          260096 mtdblock2
[    6.114281]  (driver?)
[    6.120941] No filesystem could mount root, tried:
[    6.120957]  ubifs
[    6.125863]
[    6.129482] Kernel panic - not syncing: VFS: Unable to mount root
fs on unknown-block(0,0)
[    6.138004] ---[ end Kernel panic - not syncing: VFS: Unable to
mount root fs on unknown-block(0,0) ]---

Thank you.

- jh

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