* raid 1 filesystem corruption
@ 2019-02-18 21:19 Rudolf Kastl
2019-02-18 21:30 ` Chris Murphy
0 siblings, 1 reply; 3+ messages in thread
From: Rudolf Kastl @ 2019-02-18 21:19 UTC (permalink / raw)
To: linux-btrfs
Any hints on how to recover is greatly appreciated.
uname -a:
Linux localhost-live 4.18.16-300.fc29.x86_64 #1 SMP Sat Oct 20
23:24:08 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
btrfs --version:
btrfs-progs v4.17.1
dmesg:
[ 46.918149] BTRFS info (device sda2): disk space caching is enabled
[ 46.918151] BTRFS info (device sda2): has skinny extents
[ 147.509999] rfkill: input handler enabled
[ 150.657962] BTRFS warning (device sda2): failed to resume balance: -4
[ 151.541975] BTRFS error (device sda2): open_ctree failed
[ 159.209490] rfkill: input handler disabled
[ 290.624978] BTRFS info (device sda2): disk space caching is enabled
[ 290.624981] BTRFS info (device sda2): has skinny extents
[ 294.350986] BTRFS info (device sda2): checking UUID tree
[ 294.350994] BTRFS info (device sda2): balance: resuming
[ 297.425043] BTRFS info (device sda2): relocating block group
1075919716352 flags metadata|raid1
[ 342.046679] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 429.588813] WARNING: CPU: 5 PID: 155 at fs/btrfs/extent-tree.c:1680
lookup_inline_extent_backref+0x631/0x670 [btrfs]
[ 429.588814] Modules linked in: scsi_dh_rdac scsi_dh_emc
scsi_dh_alua fcoe libfcoe libfc scsi_transport_fc iscsi_ibft
iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi mcryptd sha256_ssse3
dm_crypt vfat fat dm_round_robin raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx raid1 raid0 fuse devlink
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ip6table_nat
nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4
nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_raw
iptable_security nf_conntrack ip_set nfnetlink ebtable_filter ebtables
ip6table_filter ip6_tables amdgpu chash gpu_sched arc4 ath9k
ath9k_common ath9k_hw snd_hda_codec_realtek
[ 429.588845] snd_hda_codec_generic snd_hda_codec_hdmi radeon
snd_hda_intel mac80211 edac_mce_amd snd_hda_codec kvm_amd snd_hda_core
kvm snd_hwdep snd_seq ath joydev cfg80211 i2c_algo_bit snd_seq_device
irqbypass snd_pcm ttm drm_kms_helper rfkill mxm_wmi snd_timer drm snd
soundcore fam15h_power sp5100_tco wmi i2c_piix4 k10temp pcc_cpufreq
acpi_cpufreq nls_utf8 isofs squashfs scsi_transport_iscsi dm_multipath
btrfs xor zstd_compress raid6_pq libcrc32c zstd_decompress xxhash
crct10dif_pclmul crc32_pclmul crc32c_intel firewire_ohci 8021q garp
firewire_core mrp stp uas ghash_clmulni_intel llc crc_itu_t r8169
usb_storage mii sunrpc loop
[ 429.588876] CPU: 5 PID: 155 Comm: kworker/u16:3 Not tainted
4.18.16-300.fc29.x86_64 #1
[ 429.588877] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./990XA-UD3, BIOS FEh 10/29/2014
[ 429.588897] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
[ 429.588914] RIP: 0010:lookup_inline_extent_backref+0x631/0x670 [btrfs]
[ 429.588915] Code: 48 8b 5c 24 30 44 8b 7c 24 3c 4c 8b 6c 24 40 e9
16 fe ff ff 48 8b 5c 24 30 b8 ea ff ff ff e9 5c fb ff ff 31 ed e9 1c
fc ff ff <0f> 0b b8 fb ff ff ff e9 49 fb ff ff 0f 0b 80 7c 24 56 bf 0f
87 3c
[ 429.588936] RSP: 0018:ffffa54801e5bb48 EFLAGS: 00010202
[ 429.588938] RAX: 0000000000000001 RBX: ffff8e96544da1c0 RCX: 0000000000000000
[ 429.588938] RDX: 0000000000000008 RSI: 0000000000000001 RDI: ffff8e9620f61d88
[ 429.588939] RBP: 0000000000000000 R08: ffffa54801e5bafc R09: 000000000000009c
[ 429.588940] R10: ffff8e9340000000 R11: 0000000000000000 R12: 0000000000003000
[ 429.588941] R13: 00000000ff1f1000 R14: ffff8e967894f138 R15: 000000000000000d
[ 429.588942] FS: 0000000000000000(0000) GS:ffff8e977ed40000(0000)
knlGS:0000000000000000
[ 429.588943] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 429.588943] CR2: 00007f67c3a1f000 CR3: 000000022c20a000 CR4: 00000000000406e0
[ 429.588944] Call Trace:
[ 429.588964] insert_inline_extent_backref+0x56/0xe0 [btrfs]
[ 429.588982] ? btrfs_mark_buffer_dirty+0x73/0xa0 [btrfs]
[ 429.588998] __btrfs_inc_extent_ref.isra.68+0x8d/0x260 [btrfs]
[ 429.589015] __btrfs_run_delayed_refs+0x820/0x1060 [btrfs]
[ 429.589022] ? __switch_to_asm+0x34/0x70
[ 429.589024] ? __switch_to_asm+0x34/0x70
[ 429.589025] ? __switch_to_asm+0x40/0x70
[ 429.589026] ? __switch_to_asm+0x34/0x70
[ 429.589027] ? __switch_to_asm+0x40/0x70
[ 429.589029] ? __switch_to_asm+0x34/0x70
[ 429.589030] ? __switch_to_asm+0x40/0x70
[ 429.589031] ? __switch_to_asm+0x34/0x70
[ 429.589047] btrfs_run_delayed_refs+0x78/0x180 [btrfs]
[ 429.589064] delayed_ref_async_start+0x81/0x90 [btrfs]
[ 429.589083] normal_work_helper+0xaa/0x2f0 [btrfs]
[ 429.589087] process_one_work+0x1a1/0x350
[ 429.589089] worker_thread+0x30/0x380
[ 429.589091] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 429.589093] kthread+0x112/0x130
[ 429.589094] ? kthread_create_worker_on_cpu+0x70/0x70
[ 429.589096] ret_from_fork+0x22/0x40
[ 429.589097] ---[ end trace a095d7d24ffdf81d ]---
[ 429.589101] BTRFS: error (device sda2) in
btrfs_run_delayed_refs:3057: errno=-5 IO failure
[ 429.589104] BTRFS info (device sda2): forced readonly
[ 657.048842] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 884.822145] BTRFS error (device sda2): cleaner transaction attach
returned -30
[ 888.116936] BTRFS info (device sda2): disk space caching is enabled
[ 888.116939] BTRFS info (device sda2): has skinny extents
[ 972.059451] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 1013.071703] BTRFS info (device sda2): checking UUID tree
[ 1013.071712] BTRFS info (device sda2): balance: resuming
[ 1013.633041] BTRFS info (device sda2): relocating block group
1075919716352 flags metadata|raid1
[ 1035.037129] WARNING: CPU: 7 PID: 5493 at
fs/btrfs/extent-tree.c:1680 lookup_inline_extent_backref+0x631/0x670
[btrfs]
[ 1035.037130] Modules linked in: scsi_dh_rdac scsi_dh_emc
scsi_dh_alua fcoe libfcoe libfc scsi_transport_fc iscsi_ibft
iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi mcryptd sha256_ssse3
dm_crypt vfat fat dm_round_robin raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx raid1 raid0 fuse devlink
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ip6table_nat
nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4
nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_raw
iptable_security nf_conntrack ip_set nfnetlink ebtable_filter ebtables
ip6table_filter ip6_tables amdgpu chash gpu_sched arc4 ath9k
ath9k_common ath9k_hw snd_hda_codec_realtek
[ 1035.037163] snd_hda_codec_generic snd_hda_codec_hdmi radeon
snd_hda_intel mac80211 edac_mce_amd snd_hda_codec kvm_amd snd_hda_core
kvm snd_hwdep snd_seq ath joydev cfg80211 i2c_algo_bit snd_seq_device
irqbypass snd_pcm ttm drm_kms_helper rfkill mxm_wmi snd_timer drm snd
soundcore fam15h_power sp5100_tco wmi i2c_piix4 k10temp pcc_cpufreq
acpi_cpufreq nls_utf8 isofs squashfs scsi_transport_iscsi dm_multipath
btrfs xor zstd_compress raid6_pq libcrc32c zstd_decompress xxhash
crct10dif_pclmul crc32_pclmul crc32c_intel firewire_ohci 8021q garp
firewire_core mrp stp uas ghash_clmulni_intel llc crc_itu_t r8169
usb_storage mii sunrpc loop
[ 1035.037194] CPU: 7 PID: 5493 Comm: kworker/u16:2 Tainted: G
W 4.18.16-300.fc29.x86_64 #1
[ 1035.037195] Hardware name: Gigabyte Technology Co., Ltd. To be
filled by O.E.M./990XA-UD3, BIOS FEh 10/29/2014
[ 1035.037216] Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
[ 1035.037232] RIP: 0010:lookup_inline_extent_backref+0x631/0x670 [btrfs]
[ 1035.037233] Code: 48 8b 5c 24 30 44 8b 7c 24 3c 4c 8b 6c 24 40 e9
16 fe ff ff 48 8b 5c 24 30 b8 ea ff ff ff e9 5c fb ff ff 31 ed e9 1c
fc ff ff <0f> 0b b8 fb ff ff ff e9 49 fb ff ff 0f 0b 80 7c 24 56 bf 0f
87 3c
[ 1035.037254] RSP: 0018:ffffa5480775fb48 EFLAGS: 00010202
[ 1035.037256] RAX: 0000000000000001 RBX: ffff8e95901e0310 RCX: 0000000000000000
[ 1035.037256] RDX: 0000000000000008 RSI: 0000000000000001 RDI: ffff8e960ea7dea0
[ 1035.037257] RBP: 0000000000000000 R08: ffffa5480775fafc R09: 000000000000009c
[ 1035.037258] R10: ffff8e9340000000 R11: 0000000000000000 R12: 0000000000003000
[ 1035.037259] R13: 00000000ff1f1000 R14: ffff8e96b23a8208 R15: 000000000000000d
[ 1035.037260] FS: 0000000000000000(0000) GS:ffff8e977edc0000(0000)
knlGS:0000000000000000
[ 1035.037261] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1035.037262] CR2: 0000164bec47f2d0 CR3: 000000039115e000 CR4: 00000000000406e0
[ 1035.037263] Call Trace:
[ 1035.037283] insert_inline_extent_backref+0x56/0xe0 [btrfs]
[ 1035.037301] ? btrfs_mark_buffer_dirty+0x73/0xa0 [btrfs]
[ 1035.037316] __btrfs_inc_extent_ref.isra.68+0x8d/0x260 [btrfs]
[ 1035.037333] __btrfs_run_delayed_refs+0x820/0x1060 [btrfs]
[ 1035.037337] ? __switch_to_asm+0x34/0x70
[ 1035.037339] ? __switch_to_asm+0x34/0x70
[ 1035.037340] ? __switch_to_asm+0x40/0x70
[ 1035.037341] ? __switch_to_asm+0x34/0x70
[ 1035.037342] ? __switch_to_asm+0x40/0x70
[ 1035.037344] ? __switch_to_asm+0x34/0x70
[ 1035.037345] ? __switch_to_asm+0x40/0x70
[ 1035.037346] ? __switch_to_asm+0x34/0x70
[ 1035.037361] btrfs_run_delayed_refs+0x78/0x180 [btrfs]
[ 1035.037378] delayed_ref_async_start+0x81/0x90 [btrfs]
[ 1035.037397] normal_work_helper+0xaa/0x2f0 [btrfs]
[ 1035.037401] process_one_work+0x1a1/0x350
[ 1035.037403] worker_thread+0x30/0x380
[ 1035.037405] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 1035.037407] kthread+0x112/0x130
[ 1035.037409] ? kthread_create_worker_on_cpu+0x70/0x70
[ 1035.037410] ret_from_fork+0x22/0x40
[ 1035.037412] ---[ end trace a095d7d24ffdf81e ]---
[ 1035.037416] BTRFS: error (device sda2) in
btrfs_run_delayed_refs:3057: errno=-5 IO failure
[ 1035.037419] BTRFS info (device sda2): forced readonly
[ 1287.060044] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 1307.357847] BTRFS error (device sda2): cleaner transaction attach
returned -30
btrfs check:
[root@localhost-live ~]# btrfs check /dev/sda2
Opening filesystem to check...
Checking filesystem on /dev/sda2
UUID: b1672f65-57c6-433b-8175-4ea29426c8c6
[1/7] checking root items
[2/7] checking extents
ref mismatch on [4263448576 12288] extent item 1, found 0
incorrect local backref count on 4263448576 root 265 owner 20398689
offset 0 found 0 wanted 1 back 0x55b303728e80
backref disk bytenr does not match extent record, bytenr=4263448576,
ref bytenr=0
backpointer mismatch on [4263448576 12288]
owner ref check failed [4263448576 12288]
ref mismatch on [4280225792 12288] extent item 0, found 1
data backref 4280225792 root 265 owner 20398689 offset 0 num_refs 0
not found in extent tree
incorrect local backref count on 4280225792 root 265 owner 20398689
offset 0 found 1 wanted 0 back 0x55b305599680
backpointer mismatch on [4280225792 12288]
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space cache
[4/7] checking fs roots
root 265 inode 6722075 errors 100, file extent discount
Found file extent holes:
start: 0, len: 8192
root 265 inode 20398749 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20398750 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399694 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399695 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399704 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399705 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399706 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399708 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 20399733 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21077342 errors 100, file extent discount
Found file extent holes:
start: 0, len: 40960
root 265 inode 21077348 errors 100, file extent discount
Found file extent holes:
start: 0, len: 8192
root 265 inode 21158520 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 16384
root 265 inode 21158522 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 45056
root 265 inode 21249516 errors 100, file extent discount
Found file extent holes:
start: 0, len: 167936
root 265 inode 21249517 errors 100, file extent discount
Found file extent holes:
start: 0, len: 28672
root 265 inode 21249518 errors 100, file extent discount
Found file extent holes:
start: 0, len: 65536
root 265 inode 21249519 errors 100, file extent discount
Found file extent holes:
start: 0, len: 20480
root 265 inode 21292513 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 61440
start: 69632, len: 61440
start: 135168, len: 61440
start: 200704, len: 61440
start: 266240, len: 8192
start: 278528, len: 12288
start: 294912, len: 12288
start: 311296, len: 4096
root 265 inode 21292514 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 8192
root 265 inode 21292515 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 8192
root 265 inode 21292516 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 8192
root 265 inode 21292517 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 12288
root 265 inode 21292519 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 8192
start: 16384, len: 61440
start: 81920, len: 12288
start: 98304, len: 16384
root 265 inode 21292526 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 4096
root 265 inode 21292529 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 12288
root 265 inode 21292532 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 4096
start: 20480, len: 4096
root 265 inode 21292535 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 4096
root 265 inode 21292539 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 4096
root 265 inode 21292541 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 8192
root 265 inode 21292563 errors 100, file extent discount
Found file extent holes:
start: 16384, len: 4096
root 265 inode 21294020 errors 100, file extent discount
Found file extent holes:
start: 4096, len: 28672
start: 36864, len: 28672
start: 69632, len: 28672
start: 102400, len: 28672
start: 135168, len: 28672
start: 167936, len: 28672
start: 200704, len: 28672
start: 233472, len: 16384
root 265 inode 21294023 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294024 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 8192
start: 24576, len: 28672
start: 57344, len: 28672
start: 90112, len: 12288
start: 106496, len: 4096
start: 118784, len: 28672
start: 151552, len: 24576
root 265 inode 21294040 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294046 errors 100, file extent discount
Found file extent holes:
start: 0, len: 8192
root 265 inode 21294048 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 4096
start: 16384, len: 8192
root 265 inode 21294052 errors 100, file extent discount
Found file extent holes:
start: 69632, len: 12288
start: 86016, len: 53248
root 265 inode 21294058 errors 100, file extent discount
Found file extent holes:
start: 8192, len: 4096
start: 16384, len: 4096
start: 24576, len: 4096
start: 36864, len: 32768
start: 73728, len: 4096
start: 81920, len: 61440
start: 147456, len: 4096
root 265 inode 21294059 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294062 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294063 errors 100, file extent discount
Found file extent holes:
start: 36864, len: 12288
root 265 inode 21294064 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294066 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
root 265 inode 21294067 errors 100, file extent discount
Found file extent holes:
start: 0, len: 4096
ERROR: errors found in fs roots
found 1310761340928 bytes used, error(s) found
total csum bytes: 1273838524
total tree bytes: 5730992128
total fs tree bytes: 3982426112
total extent tree bytes: 295813120
btree space waste bytes: 911901620
file data blocks allocated: 1822835818496
referenced 1294330966016
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: raid 1 filesystem corruption
2019-02-18 21:19 raid 1 filesystem corruption Rudolf Kastl
@ 2019-02-18 21:30 ` Chris Murphy
[not found] ` <CAAD7_rBSYJ_Srcsuf--0YMXW3xd3SVdECzmH=BroOwu9YTnTjg@mail.gmail.com>
0 siblings, 1 reply; 3+ messages in thread
From: Chris Murphy @ 2019-02-18 21:30 UTC (permalink / raw)
To: Rudolf Kastl; +Cc: Btrfs BTRFS
On Mon, Feb 18, 2019 at 2:19 PM Rudolf Kastl <che666@gmail.com> wrote:
>
> Any hints on how to recover is greatly appreciated.
>
> uname -a:
> Linux localhost-live 4.18.16-300.fc29.x86_64 #1 SMP Sat Oct 20
> 23:24:08 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
>
> btrfs --version:
> btrfs-progs v4.17.1
>
> dmesg:
> [ 46.918149] BTRFS info (device sda2): disk space caching is enabled
> [ 46.918151] BTRFS info (device sda2): has skinny extents
> [ 147.509999] rfkill: input handler enabled
> [ 150.657962] BTRFS warning (device sda2): failed to resume balance: -4
> [ 151.541975] BTRFS error (device sda2): open_ctree failed
> [ 159.209490] rfkill: input handler disabled
> [ 290.624978] BTRFS info (device sda2): disk space caching is enabled
> [ 290.624981] BTRFS info (device sda2): has skinny extents
> [ 294.350986] BTRFS info (device sda2): checking UUID tree
> [ 294.350994] BTRFS info (device sda2): balance: resuming
> [ 297.425043] BTRFS info (device sda2): relocating block group
> 1075919716352 flags metadata|raid1
> [ 342.046679] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
> [ 429.588813] WARNING: CPU: 5 PID: 155 at fs/btrfs/extent-tree.c:1680
[snip]
> [ 429.589101] BTRFS: error (device sda2) in
> btrfs_run_delayed_refs:3057: errno=-5 IO failure
This suggests an underlying block layer problem, IO error happened
outside of Btrfs I think. Do you have the complete dmesg?
Also useful:
'smartctl -x' for both drives
'smartctl -l sct erc' for both drives
'cat /sys/block/sdX/device/timeout' for both drives
--
Chris Murphy
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: raid 1 filesystem corruption
[not found] ` <CAAD7_rAk=iArkpSHeTRv7uv1tFz5nEh2qGEb7nixujLXcmhxxw@mail.gmail.com>
@ 2019-02-18 23:23 ` Chris Murphy
0 siblings, 0 replies; 3+ messages in thread
From: Chris Murphy @ 2019-02-18 23:23 UTC (permalink / raw)
To: Btrfs BTRFS
> Am Mo., 18. Feb. 2019 um 23:35 Uhr schrieb Rudolf Kastl <che666@gmail.com>:
> >
> > I tried a btrfs check --repair on sda2:
OK I think this is a risky decision, hopefully it works out though.
a. There's corruption and IO error we don't understand the source of
yet. Repairs can make problems much worse if the source of corruption
happens during repair.
b. from the 'man btrfs check' page
Warning
Do not use --repair unless you are advised to do so by a
developer or an experienced user, and then only after having accepted
that no fsck successfully repair all types of filesystem corruption.
Eg. some other software or hardware bugs can fatally damage a volume.
--
Chris Murphy
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-02-18 23:23 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2019-02-18 21:19 raid 1 filesystem corruption Rudolf Kastl
2019-02-18 21:30 ` Chris Murphy
[not found] ` <CAAD7_rBSYJ_Srcsuf--0YMXW3xd3SVdECzmH=BroOwu9YTnTjg@mail.gmail.com>
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2019-02-18 23:23 ` Chris Murphy
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