Hard-Disk

BTRFS 是否說我的硬碟已死?

  • September 2, 2017

我注意到我的 HP N54L 正在工作,並發現它dmesg正在報告這個:

[   81.945530] btrfs read error corrected: ino 1 off 16685977600 (dev /dev/sdb sector 2636776)
[   82.010023] btrfs read error corrected: ino 1 off 16637734912 (dev /dev/sdb sector 2589656)

[   85.927604] verify_parent_transid: 43 callbacks suppressed
[   85.927615] parent transid verify failed on 16956989440 wanted 13182 found 12799
[   85.974600] parent transid verify failed on 16585043968 wanted 13145 found 12357

[   89.903548] repair_io_failure: 26 callbacks suppressed
[   89.903560] btrfs read error corrected: ino 1 off 16875483136 (dev /dev/sdb sector 2821816)
[  115.951579] parent transid verify failed on 16963846144 wanted 13184 found 12802
[  115.976830] btrfs read error corrected: ino 1 off 16963846144 (dev /dev/sdb sector 2908128)
[  115.988907] parent transid verify failed on 16978874368 wanted 13187 found 12815

[  543.848294] btrfs: device fsid e8f8fc09-3aae-4fce-85ca-fcf7665b9f02 devid 2 transid 13199 /dev/sdb
[ 1120.854825] verify_parent_transid: 5 callbacks suppressed
[ 1120.854838] parent transid verify failed on 16956600320 wanted 13184 found 12799

[ 1120.891229] repair_io_failure: 6 callbacks suppressed
[ 1120.891243] btrfs read error corrected: ino 1 off 16956600320 (dev /dev/sdb sector 2901016)
[ 1124.851937] parent transid verify failed on 16977842176 wanted 13187 found 12814
[ 1124.885429] btrfs read error corrected: ino 1 off 16977842176 (dev /dev/sdb sector 2921768)

這是我的 BTRFS 設置。跨 4x3TB 硬碟的 RAID10:

$ sudo btrfs filesystem df /mnt/btrfs
Data, RAID10: total=136.00GiB, used=134.70GiB
System, RAID10: total=64.00MiB, used=20.00KiB
System, single: total=4.00MiB, used=0.00
Metadata, RAID10: total=1.00GiB, used=363.21MiB

$ sudo btrfs filesystem show /mnt/btrfs
Label: none  uuid: <UUID>
   Total devices 4 FS bytes used 135.05GiB
   devid    1 size 2.73TiB used 68.54GiB path /dev/sda
   devid    2 size 2.73TiB used 68.53GiB path /dev/sdb
   devid    3 size 2.73TiB used 68.53GiB path /dev/sdc
   devid    4 size 2.73TiB used 68.53GiB path /dev/sdd

我注意到來自 BTRFS 的設備統計數據是……奇怪……:

$ sudo btrfs device stats /mnt/btrfs
[/dev/sda].write_io_errs   0
[/dev/sda].read_io_errs    0
[/dev/sda].flush_io_errs   0
[/dev/sda].corruption_errs 0
[/dev/sda].generation_errs 0
[/dev/sdb].write_io_errs   207275
[/dev/sdb].read_io_errs    127287
[/dev/sdb].flush_io_errs   0
[/dev/sdb].corruption_errs 0
[/dev/sdb].generation_errs 0
[/dev/sdc].write_io_errs   0
[/dev/sdc].read_io_errs    0
[/dev/sdc].flush_io_errs   0
[/dev/sdc].corruption_errs 0
[/dev/sdc].generation_errs 0
[/dev/sdd].write_io_errs   0
[/dev/sdd].read_io_errs    0
[/dev/sdd].flush_io_errs   0
[/dev/sdd].corruption_errs 0
[/dev/sdd].generation_errs 0

我已經為自己訂購了一個備用的 3TB 硬碟以防萬一,但我可以安全地假設它/dev/sdb已經死了嗎?我只是覺得 BTRFS 報告有點奇怪[/dev/sdb].corruption_errs 0

是否有一種普遍接受的方法來證明硬碟在 BTRFS RAID 陣列中已失效?

我在家裡的伺服器上看到了類似的性能下降(執行 RAID-6,Btrfs 位於頂部)。它已在三個場合證明了其中一個驅動器。

我做的第一件事是smartctl為每個驅動器執行。然後對於失敗的驅動器,我注意到原始錯誤的數量:

smartctl -x /dev/sdf | fgrep Raw

跟踪這些。我有一個驅動器曾經出現過一些錯誤,但在重置佈線後的過去 9 個月內一直很穩定。不知道為什麼,但我確實認為那個“還沒有死”。

如果錯誤計數再次增加,我會移除驅動器並進行更換(我可以忍受 RAID-6 中兩個額外驅動器之一離線半天的風險)。

引用自:https://unix.stackexchange.com/questions/209018