After switching from Ubuntu back to Fedora I found a zfs dataset I created on FC15 wont mount on FC18. I keep getting "cannot mount 'rsc1tb/store': mountpoint or dataset is busy. Every tool i use to get a status on the file system says its not mounted. Even after a zfs umount -f it doesn't want to remount.
My next step was to backup the data on the filesystem and recreate it.. Which I did, but it still will not mount the filesystem.
A couple of things to note.. I cannot even do a zfs or zpool destroy with out getting the "busy" error. I recreated the file system by deleting the partition and creating a new one. Still didn't work...