ZFS Zpool disappeared

So, I just did a software update on my ZFS server. The machine runs on Ubuntu Server 12.04. So basically what happened is that after the software updates a reboot was required, and since this is my personal server a bit of downtime is not a big deal. So anyway I rebooted the system and my zpool did not remount. This is not the first time I have seen something like this happen. My typical process is to open the terminal and simply remount the pool. Issuing the zpool mount -a did not bring my pool back up. So I proceeded to try and export / import the array and it issued an error. Ill post the exact error later. Anyway now when I issue zpool import storage I get an error that says the pool does not exist.

Any input is appreciated.

Ok, so with a bit of troubleshooting help from thinderas I managed to track down the problem. Somehow during the update 2 of ZFS dependent packages ended up being removed or lost somehow. I solved the problem by issuing an apt-get update, and apt-get --reinstall install ubuntu-zfs.

I was able to get the pool back up with the standard commands zpool import poolname and zfs mount -a.