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    ZFS problem - drive wont online? Expert help needed.

    Discussion in 'Linux Compatibility and Software' started by masterchef341, Sep 20, 2013.

  1. masterchef341

    masterchef341 The guy from The Notebook

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    I'm on Ubuntu 13.04, I've got native ZFS installed. I could explain the whole story at length, but I'll keep it short and post some command line results in hope of getting some help. I've been at this for a while =p

    Basically, I corrupted one of the drives in my ZFS pool accidentally. The pool was populated with drives by mount point name- like /dev/sdb, /dev/sdc, etc. I plugged in a USB flash drive to this system and it took over the mount point /dev/sdd and pushed my /dev/sdd ZFS drive to the /dev/sde position. This confused the hell out of ZFS, but didn't take down the raidz1 pool, which has one parity drive.

    The pool is still totally functional, but I want my parity drive to resilver. I've since changed the mapping to the absolute names for the drives, but after trying offlinining and onlining and wiping and zeroing several times, I just cant get ZFS to resilver this drive. Logs follow:

    ubuntu:~$ sudo zpool status -v
    pool: zstore
    state: DEGRADED
    status: One or more devices has been taken offline by the administrator.
    Sufficient replicas exist for the pool to continue functioning in a
    degraded state.
    action: Online the device using 'zpool online' or replace the device with
    'zpool replace'.
    scan: resilvered 7.62M in 0h0m with 0 errors on Wed Sep 18 21:58:27 2013
    config:


    NAME STATE READ WRITE CKSUM
    zstore DEGRADED 0 0 0
    raidz1-0 DEGRADED 0 0 0
    ata-WDC_WD20EZRX-00DC0B0_WD-WMC301543757 ONLINE 0 0 0
    ata-WDC_WD20EARS-00MVWB0_WD-WCAZA2142186 ONLINE 0 0 0
    ata-WDC_WD20EZRX-00D8PB0_WD-WMC4M0248743 OFFLINE 0 0 0


    errors: No known data errors
    ubuntu:~$ sudo zpool online zstore ata-WDC_WD20EZRX-00D8PB0_WD-WMC4M0248743
    warning: device 'ata-WDC_WD20EZRX-00D8PB0_WD-WMC4M0248743' onlined, but remains in faulted state
    use 'zpool replace' to replace devices that are no longer present
    ubuntu:~$ sudo zpool status -v
    pool: zstore
    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: ZFS Message ID: ZFS-8000-4J
    scan: resilvered 7.62M in 0h0m with 0 errors on Wed Sep 18 21:58:27 2013
    config:


    NAME STATE READ WRITE CKSUM
    zstore DEGRADED 0 0 0
    raidz1-0 DEGRADED 0 0 0
    ata-WDC_WD20EZRX-00DC0B0_WD-WMC301543757 ONLINE 0 0 0
    ata-WDC_WD20EARS-00MVWB0_WD-WCAZA2142186 ONLINE 0 0 0
    ata-WDC_WD20EZRX-00D8PB0_WD-WMC4M0248743 UNAVAIL 0 0 0


    errors: No known data errors
     
    masterchef341, Sep 20, 2013
    #1
  2. masterchef341

    masterchef341 The guy from The Notebook

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    Nevermind. I just forced it to replace with itself and it took it. I had been getting errors when trying to do this before.

    ubuntu:~$ sudo zpool replace -f zstore ata-WDC_WD20EZRX-00D8PB0_WD-WMC4M0248743

    ZFS is strange.

    <iframe width='420' height="315" src="//www.youtube.com/embed/GJY8jJkDoMY" frameborder='0' allowfullscreen=""></iframe>
     
    Last edited by a moderator: May 6, 2015
    masterchef341, Sep 20, 2013
    #2
    katalin_2003 likes this.