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rated 0 times [  0] [ 0]  / answers: 1 / hits: 943  / 2 Years ago, mon, may 23, 2022, 2:22:20

After upgrading to 4.4.0-59 yesterday I realized today that my zfs partitions were gone! Googling a bit suggested that [ ] zfs-native did not like (as in: compile with) the -59 kernel.

Sure enough, zfs is missing from the -59 kernel (check last 2 lines):

% dkms status
bbswitch, 0.7, 4.4.0-53-generic, x86_64: installed
bbswitch, 0.7, 4.4.0-57-generic, x86_64: installed
bbswitch, 0.7, 4.4.0-59-generic, x86_64: installed
nvidia-340, 340.98, 4.4.0-53-generic, x86_64: installed
nvidia-340, 340.98, 4.4.0-57-generic, x86_64: installed
nvidia-340, 340.98, 4.4.0-59-generic, x86_64: installed
spl,, 4.4.0-53-generic, x86_64: installed
spl,, 4.4.0-57-generic, x86_64: installed
spl,, 4.4.0-59-generic, x86_64: installed
virtualbox, 4.3.36, 4.4.0-53-generic, x86_64: installed
virtualbox, 4.3.36, 4.4.0-57-generic, x86_64: installed
virtualbox, 4.3.36, 4.4.0-59-generic, x86_64: installed
zfs,, 4.4.0-53-generic, x86_64: installed
zfs,, 4.4.0-57-generic, x86_64: installed

Ok, what to do? Reboot under the previously known good kernel (-57)!

After rebooting, sure I can access my zpool, but my partitions are not mounted. To confuse matters even more,

zpool status
suggests I upgrade my pool:

% sudo zpool status
pool: tank
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: none requested

tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ata-ST4000DM000-1F2168_S3014GKE-part4 ONLINE 0 0 0

errors: No known data errors

Dare I do that? Or, did something get messed up during the failed update to 4.4.0-59? I have installed zfs via

apt-get install ubuntu-zfs
and do not feel brave enough to try to compile and install the zfs module myself. For now, I just want my zfs partitions back!

Update: I have posted the solution that worked below. It might be against askubuntu rules, but I wanted to have this info out as soon as possible if someone else were to run into the same problem.

More From » 14.04


After a few days an update to zfs- appeared. After installing it, re-installing the -59 kernel produced no error messages. However, my partitions were not mounted automatically at boot. A modification to

(from 30) in
solved that. So now everything appears to be back to normal!

[#12459] Monday, May 23, 2022, 2 Years  [reply] [flag answer]
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