ZFS file systems are in the ignored mountlist
Submitted by Mike Swanson
Created attachment 276153 Don't ignore zfs
File systems under ZFS are not stored on any typical block device, instead they are all part of storage pools and thus do not show up as being mounted on a block device. ZFS on Linux (http://zfsonlinux.org/) reflects this by having /proc/filesystems print out "nodev zfs".
The patch attached makes a special exception for ZFS file systems. Especially good about it, is that it makes baobab not exit immediately on a pure-ZFS system claiming to not find any mounted file systems.
Patch 276153, "Don't ignore zfs":