Home / server / Questions / 708783
Accepted
Christopher
Asked: 2015-07-28 06:13:09 +0800 CST

ZFS never mounts my pool automatically, why?

  • 772

I'm running ZFS on Linux on my workstation, and have been for about two years:

[  273.779699] SPL: Loaded module v0.6.4.2-1~vivid
[  273.824212] ZFS: Loaded module v0.6.4.2-1~vivid, ZFS pool version 5000, ZFS filesystem version 5
[  280.179534] SPL: using hostid 0x007f0101

It works great, except that a couple of months ago I upgraded to Ubuntu 15.04. When I rebooted after the upgrade, the ZFS pool was not seen. At first I panicked, but when I had zpool search my devices it found the missing pool. Running "zpool import store" works fine, and everything mounts as it ought to. Until the next time I reboot.

Everytime I reboot ZFS appears to forget about my pool. However, I can't see anything obviously wrong:

$ sudo zpool list -Hv
store   1.30T   301G    1.00T   -       22%     22%     1.17x   ONLINE  -
        sda4    432G    135G    297G    -       31%     31%
        sdb3    896G    167G    729G    -       19%     18%

I also don't see anything obviously wrong in the partition tables:

$ sudo parted -l
Model: ATA ST500DM002-1BD14 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name                  Flags
 1      1049kB  512MB   511MB   fat32        EFI System Partition  msftdata
 2      512MB   35.5GB  35.0GB  ext4
 4      35.5GB  500GB   465GB   zfs


Model: ATA WDC WD1002FAEX-0 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  10.0GB  9999MB  linux-swap(v1)
 2      10.0GB  35.0GB  25.0GB  xfs
 3      35.0GB  1000GB  965GB   zfs

Any guidance about where to look, or what to do would be very much appreciated.

linux

3 Answers

  1. Check /etc/default/zfs and make sure it's set to:

    ZFS_MOUNT='yes' ZFS_UNMOUNT='yes'

    • 2

  2. Be sure to have ubuntu-zfspackage installed, as it provides the correct pinning for the mountallcommand. See https://github.com/zfsonlinux/pkg-zfs/wiki/Ubuntu-ZFS-mountall-FAQ-and-troubleshooting for more details

    AND/OR

    have a look into and change /etc/init/zpool-import.conf

    modprobe zfs zfs_autoimport_disable=1

    to

    modprobe zfs zfs_autoimport_disable=0

    • 1
  3. Best Answer

    I updated the ZFS packages this week and the problem simply vanished. It must have been a bug somewhere that got fixed. Everything is good again.

    • 1