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jkoop
Asked: 2022-01-07 09:14:15 +0800 CST

zpool import missing cache drive; ubuntu

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I apologise if my information here is badly laid out.

I added a cache drive to my zpool by udev id (e.g. sda). Later, I restarted the computer and it was assigned a different udev id (of course). To get it back, I tried zpool replace, zpool import, and zpool online, but none of them worked (maybe I did it wrong?).

Is it possible to re-add a drive to a zpool without wiping it first, or will I have to drop my cache?

Drive IDs

old udev disk/by-id
sdc ata-Apacer_AS340_480GB_YTAH190705739

zpool info

> zpool status
  pool: newpool
 state: ONLINE
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: http://zfsonlinux.org/msg/ZFS-8000-4J
  scan: scrub repaired 0B in 0 days 13:35:36 with 0 errors on Sun Dec 12 13:59:38 2021
config:

    NAME                                          STATE     READ WRITE CKSUM
    newpool                                       ONLINE       0     0     0
      mirror-0                                    ONLINE       0     0     0
        ata-WDC_WD4002FFWX-68TZ4N0_K3G0HWLB       ONLINE       0     0     0
        ata-ST4000DM000-1F2168_S3013K0S           ONLINE       0     0     0
      mirror-2                                    ONLINE       0     0     0
        ata-ST4000DM000-1F2168_Z300WERG           ONLINE       0     0     0
        ata-WDC_WD4002FFWX-68TZ4N0_K3G0HVSB       ONLINE       0     0     0
    logs    
      ata-KINGSTON_SA400S37120G_50026B7682053DB7  ONLINE       0     0     0
    cache
      sdc                                         UNAVAIL      0     0     0

> zpool version
zfs-0.8.3-1ubuntu12.13
zfs-kmod-0.8.3-1ubuntu12.13
ubuntu

0 Answers