Degraded pool as a result of several power losses

[Por12]

Hi,

I have had some electrical work done at home. Despite having a UPS, my proxmox server had several unscheduled power loses and now is reporting a degraded status on a 4TB HDD I use to store backups. I am not that proficient on ZFS so I'm a bit lost. Ideally I would like to see the files affected and recreate that backup. But I don't know how to see adicional detail on the errores (it says 0 read, 0 write, 0 chksum).

Thanks in advance

 

[Moayad]

Hi,

Could you please post the output of `zpool status -v` command?

 

[ness1602]

Restore from backup,the pool is gone.

 

[Por12]

  pool: rust-olivar
 state: DEGRADED
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
  scan: scrub repaired 0B in 04:26:29 with 5 errors on Sun Jan 14 04:50:31 2024
config:

        NAME                                        STATE     READ WRITE CKSUM
        rust-olivar                                 DEGRADED     0     0     0
          ata-WDC_WD40EFRX-68N32N0_WD-WCC7K5FDTKLP  DEGRADED     0     0     0  too many errors

errors: Permanent errors have been detected in the following files:

        /rust-olivar/local-backups/dump/vzdump-lxc-304-2024_01_12-18_22_49.tar.zst

Should I delete the /rust-olivar/local-backups/dump/vzdump-lxc-304-2024_01_12-18_22_49.tar.zst file and then all would be good?

Restore from backup,the pool is gone.

Is my backup was it's degraded, my live stuff is all good. In any case it's only old security cam footage so I wouldn't mind deleting the backup and keep doing new ones.

Thanks!

 

[Moayad]

Should I delete the /rust-olivar/local-backups/dump/vzdump-lxc-304-2024_01_12-18_22_49.tar.zst file and then all would be good?

This has been identified as corrupted, and if you know that the LXC have a valid backup, you can safely remove it.

ata-WDC_WD40EFRX-68N32N0_WD-WCC7K5FDTKLP DEGRADED 0 0 0 too many errors

I would replace this disk as soon as possible to avoid further data corruption and to restore the health of your ZFS POOL.

 

[Por12]

Cleared the errors several times but they keep appearing. I've just ordered a new HDD to replace the damaged one.

Thanks for the help.

 

[Kingneutron]

Unless you are completely unable to add a mirror to that drive, please consider doing so to remove a single point of failure. This will also give you self-healing scrubs.

In the future I would also shutdown your PC equipment safely before doing electrical work.