Recover Your Files using your snapshot directory
Snapshots of your home directory are taken nightly and are named "YYYY-MM-DD".
Snapshots could be accessed as follows: "cd $HOME/.zfs/snapshot"
Example:
$cd $HOME/.zfs/snapshot
$ls
2011-11-23
$cd 2011-11-23
$ls
You will be able to see a snapshot of your entire home directory with all the files
as they were at the time when the snapshot was taken and you may recover the files you need.