Comment 2 for bug 1900889

I think this may be a race condition, in which case duplicating this issue and testing a fix may be problematic.

I've created a potential fix and tested this against our internal regression tests, so it may be worth tying this to see if the issue occurs with the fix.

To try this out do the following:

sudo add-apt-repository ppa:colin-king/zfs-src-1900889
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install zfs-dkms

This will pull in the fixed version including the kernel ZFS driver - the DKMS ZFS driver may take several minutes to build. Once done, a reboot is required.