Due to a bug in time-slider cleanup and zpool importing, you could get in serious trouble when autosnapshotting zvols. See: http://defect.opensolaris.org/bz/show_bug.cgi?id=8454 http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6761786 you should integrate the patched time slider cleanup asap, to the gates. You could fetch it here: http://hg.opensolaris.org/sc/src/jds/time-slider/usr/share/time-slider/lib/time_slider/ Florian