ZFS disk change

[MarekORDI]

Hello

I recently replaced a failed disk in ZFS data pool. Everything worked without problems but after command zpool status shows the new disk differently in command line.

I wonder if it would cause me problems down the line?

What I did. Working disk in pool is /dev/sda and new disk is /dev/sdb. Old disk failed completely. So I shut down the server and replaced the disk first.

Then these commands:

sgdisk /dev/sda -R /dev/sdb

sgdisk -G /dev/sdb

zpool replace -f storage01 16383656347721028438 ata-Micron_5300_MTFDDAK960TDS_2218377YYYY-part1

The pool before disk change

pool: storage01
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-4J
scan: scrub repaired 0B in 00:06:51 with 0 errors on Sun May 8 00:30:52 2022
config:

NAME STATE READ WRITE CKSUM
storage01 DEGRADED 0 0 0
mirror-0 DEGRADED 0 0 0
ata-Micron_5300_MTFDDAK960TDS_20522C5CXXXX ONLINE 0 0 0
16383656347721028438 UNAVAIL 0 0 0 was /dev/disk/by-id/ata-Micron_5300_MTFDDAK960TDS_20522C5XXXY-part1


Pool after disk change.

pool: storage01
state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(5) for details.
scan: scrub repaired 0B in 00:06:55 with 0 errors on Tue May 31 09:09:11 2022
config:

NAME STATE READ WRITE CKSUM
storage01 ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ata-Micron_5300_MTFDDAK960TDS_20522C5CXXXX ONLINE 0 0 0
ata-Micron_5300_MTFDDAK960TDS_2218377CYYYY-part1 ONLINE 0 0 0

errors: No known data errors

The new disk has additinal -part1 after the name. If I look the pool in Proxmox WebUI then it shows -part1 for both disks.




Is this some weird bug that only shows in command line zpool status or could I have a problem with this?

 

[shrdlicka]

Proxmox calls this command to display zpool status information:

zpool status -P <pool name>

You should see the same names there. WIth -P the full paths are printed. My example pools look like this:

root@21-cl1:~# zpool status
  pool: canister
 state: ONLINE
config:

    NAME                 STATE     READ WRITE CKSUM
    canister             ONLINE       0     0     0
      draid3:1d:4c:0s-0  ONLINE       0     0     0
        sdc              ONLINE       0     0     0
        sdd              ONLINE       0     0     0
        sde              ONLINE       0     0     0
        sdf              ONLINE       0     0     0

errors: No known data errors

  pool: wall
 state: ONLINE
config:

    NAME                                      STATE     READ WRITE CKSUM
    wall                                      ONLINE       0     0     0
      mirror-0                                ONLINE       0     0     0
        scsi-0QEMU_QEMU_HARDDISK_drive-scsi2  ONLINE       0     0     0
        scsi-0QEMU_QEMU_HARDDISK_drive-scsi1  ONLINE       0     0     0

errors: No known data errors

because the first one i created by hand with the /dev/sd* paths the other one was created by proxmox which is using a different path to access the device.

 

[MarekORDI]

Checked with -P and this show the disks same way.

# zpool status -P storage01
pool: storage01
state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(5) for details.
scan: scrub repaired 0B in 00:06:55 with 0 errors on Tue May 31 09:09:11 2022
config:

NAME STATE READ WRITE CKSUM
storage01 ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
/dev/disk/by-id/ata-Micron_5300_MTFDDAK960TDS_20522C5CXXXX-part1 ONLINE 0 0 0
/dev/disk/by-id/ata-Micron_5300_MTFDDAK960TDS_2218377CYYYY-part1 ONLINE 0 0 0

errors: No known data errors


So everything seems to be good. Thank you for the information.