I did recently upgrade my little NAS to ubuntu 14.04 and initially everything worked fine.
I'm used to re-import my ZFS pools after restarts and so it was no surprise when the mount point was gone after a restart 2 days ago.
But this time i was not able to re-import it and when i started looking closer the whole ZFS dataset disappeared too and i start to run out of ideas what to try (as do the google results i find).
$ zpool list or zpool status
no pools available
$ zfs list
no datasets available
$ ls /dev/disk/by-id/
… disks as i have used them in my config …none missing
Everything was working fine before a reboot 2 days ago, and before that reboot i did run some upgrades including the kernel (standard upgrade via apt).
Re-installing/further upgrading or going back to previous versions (selected in grub) all did not help.
It would be really cool to get it back running, especially since i switched to ZFS for its promised reliability. The nice data redundancy does not help me if the whole storage disappears out of nowhere…
Any ideas?
Best Answer
I had the same Problem. Doing
and rebooting solved it for me. For some Reasons ubuntu did not update all zfs-packages. You can see if this is the case at the end of apt-get update output (packages held back)