I’ve been working quite heavily with ZFS as of lately. So far, I’m loving most every aspect of it except for a few quirks.

Most importantly being the lack of performance on 32bit systems.

Recently I found a defect in zfs recieve that allows the creation of an invalid named snapshot.

This rogue snapshot then causes the other zfs and zpool commands to core dump. It’s quite fun. You can’t rename it, you can’t destroy it, you can’t list it .. .you can’t do anything to it. Eventually You’ll need to boot into single user and just forcefully create a new pool ontop of the old one. (yes . . .we’re talking serious data loss). However .. good news is you can still snapshot and backup and restore all of the other filesystems. (provided you have the space to do so) .. .took me about 700Gb and several days .. .AAARRGHH.

ISCSI target support has been working out pretty well as well. I have found a few more quirks that has cause initiator systems to hang and even once crash. (yes it’s bad to delete a static-config when the system is still using the filesystem)