Comment 3 for bug 1848653

Note that I was able to recover from this by doing a sudo dpkg --configure -a which then prompted me about what to do for my existing zfs-zed package. I still got an error in the end indicating that there were failures during the process but my system seemed stable. A quick reboot later cat /sys/module/zfs/version shows 0.8.1-1ubuntu12 and all seems to be well...so far :)