I think I'm seeing an error in the output from zfs list with regards to snapshot space utilization.
In the first list, there are 818M used by snapshots, but the snaps listed aren't using anything close to that amount. If I destroy the first snapshot, then the second one suddenly jumps in space used to 813M, which seems about right and the USEDSNAP column makes sense. Is this a bug in snapshot accounting or reporting, or is there something I missed? r...@basestar:/export/vmware# zfs list -t all -r -o space tank/export/volumes/caliban NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD tank/export/volumes/caliban 3.09T 1.59G 818M 813M 0 0 tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-10:00 - 2.88M - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-11:00 - 2.80M - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-12:00 - 200K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:15 - 174K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:30 - 252K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:45 - 340K - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-13:00 - 0 - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-13:00 - 0 - - - - r...@basestar:/export/vmware# zfs destroy tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-10:00 r...@basestar:/export/vmware# zfs list -t all -r -o space tank/export/volumes/caliban NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD tank/export/volumes 3.09T 39.3G 0 47.1K 0 39.3G tank/export/volumes/caliban 3.09T 1.59G 815M 813M 0 0 tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-11:00 - 813M - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-12:00 - 200K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:15 - 174K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:30 - 252K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:45 - 340K - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-13:00 - 0 - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-13:00 - 0 - - - - r...@basestar:/export/vmware# zfs destroy tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-11:00 r...@basestar:/export/vmware# zfs list -t all -r -o space tank/export/volumes/caliban NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD tank/export/volumes/caliban 3.09T 815M 2.04M 813M 0 0 tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-12:00 - 200K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:15 - 174K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:30 - 252K - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-12:45 - 340K - - - - tank/export/volumes/cali...@zfs-auto-snap:hourly-2010-03-19-13:00 - 0 - - - - tank/export/volumes/cali...@zfs-auto-snap:frequent-2010-03-19-13:00 - 0 - - - - -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
