T3 comment below... Gavin Maltby wrote: > Hi, > > On 09/29/07 22:00, Gavin Maltby wrote: >> Hi, >> >> Our zfs nfs build server running snv_73 (pool created back before >> zfs integrated to ON) paniced I guess from zfs the first time >> and now panics on attempted boot every time as below. Is this >> a known issue and, more importantly (2TB of data in the pool), >> any suggestions on how to recover (other than from backup). >> >> panic[cpu0]/thread=ffffff003cc8dc80: zfs: allocating allocated >> segment(offset=24872013824 size=4096) > > So in desperation I set 'zfs_recover' which just produced an > assertion failure moments after the original panic location. > but also set 'aok' to blast through assertions has allowed > me to import the pool again (I had booted -m milestone=none > and blown away /etc/zfs/zpool.cache to be able to boot at > all). > > Luckily just the single corruption apparent at the moment, ie > just a single assertion caught after running for half a day like this: > > Sep 30 17:01:53 tb3 genunix: [ID 415322 kern.warning] WARNING: zfs: > allocating allocated segment(offset=24872013824 size=4096) > Sep 30 17:01:53 tb3 genunix: [ID 411747 kern.notice] ASSERTION CAUGHT: > sm->sm_space == space (0xc4896c00 == 0xc4897c00), file: > ../../common/fs/zfs/space_map.c, line: 355 > > What I'd really like to know is whether/how I can map from that > assertion at the pool level back down to a single filesystem > or even file using this segment - perhaps I can recycle that file > to free the segment and set the world straight again? > > A scrub is only 20% complete, but has found no errors thus far. I check > the T3 pair and no complaints there either - I did reboot them just for > luck (last reboot was 2 years ago, apparently!).
Living on the edge... The T3 has a 2 year battery life (time is counted). When it decides the batteries are too old, it will shut down the nonvolatile write cache. You'll want to make sure you have fresh batteries soon. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
