Am 31.12.2012 02:10, schrieb Samuel Just:
Are you using xfs? If so, what mount options?
Yes, noatime,nodiratime,nobarrier,logbufs=8,logbsize=256k Stefan
On Dec 30, 2012 1:28 PM, "Stefan Priebe" <s.priebe@xxxxxxxxxxxx <mailto:s.priebe@xxxxxxxxxxxx>> wrote: > > Am 30.12.2012 19:17, schrieb Samuel Just: >> >> This is somewhat more likely to have been a bug in the replication logic >> (there were a few fixed between 0.53 and 0.55). Had there been any >> recent osd failures? > > Yes i was stressing CEPH with failures (power, link, disk, ...). > > Stefan > >> On Dec 24, 2012 10:55 PM, "Sage Weil" <sage@xxxxxxxxxxx <mailto:sage@xxxxxxxxxxx> >> <mailto:sage@xxxxxxxxxxx <mailto:sage@xxxxxxxxxxx>>> wrote: >> >> On Tue, 25 Dec 2012, Stefan Priebe wrote: >> > Hello list, >> > >> > today i got the following ceph status output: >> > 2012-12-25 02:57:00.632945 mon.0 [INF] pgmap v1394388: 7632 pgs: 7631 >> > active+clean, 1 active+clean+inconsistent; 151 GB data, 307 GB >> used, 5028 GB / >> > 5336 GB avail >> > >> > >> > i then grepped the inconsistent pg by: >> > # ceph pg dump - | grep inconsistent >> > 3.ccf 10 0 0 0 41037824 155930 >> 155930 >> > active+clean+inconsistent 2012-12-25 01:51:35.318459 6243'2107 >> > 6190'9847 [14,42] [14,42] 6243'2107 2012-12-25 >> 01:51:35.318436 >> > 6007'2074 2012-12-23 01:51:24.386366 >> > >> > and initiated a repair: >> > # ceph pg repair 3.ccf >> > instructing pg 3.ccf on osd.14 to repair >> > >> > The log output then was: >> > 2012-12-25 02:56:59.056382 osd.14 [ERR] 3.ccf osd.42 missing >> > 1c602ccf/rbd_data.4904d6b8b4567.0000000000000b84/head//3 >> > 2012-12-25 02:56:59.056385 osd.14 [ERR] 3.ccf osd.42 missing >> > ceb55ccf/rbd_data.48cc66b8b4567.0000000000001538/head//3 >> > 2012-12-25 02:56:59.097989 osd.14 [ERR] 3.ccf osd.42 missing >> > dba6bccf/rbd_data.4797d6b8b4567.00000000000015ad/head//3 >> > 2012-12-25 02:56:59.097991 osd.14 [ERR] 3.ccf osd.42 missing >> > a4deccf/rbd_data.45f956b8b4567.00000000000003d5/head//3 >> > 2012-12-25 02:56:59.098022 osd.14 [ERR] 3.ccf repair 4 missing, 0 >> inconsistent >> > objects >> > 2012-12-25 02:56:59.098046 osd.14 [ERR] 3.ccf repair 4 errors, 4 >> fixed >> > >> > Why doesn't ceph repair this automatically? Ho could this happen >> at all? >> >> We just made some fixes to repair in next (it was broken sometime >> between >> ~0.53 and 0.55). The latest next should repair it. In general we don't >> repair automatically lest we inadvertantly propagate bad data or paper >> over a bug. >> >> As for the original source of the missing objects... I'm not sure. >> There >> were some fixed races related to backfill that could lead to an object >> being missed, but Sam would know more about how likely that actually is. >> >> sage >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx <mailto:majordomo@xxxxxxxxxxxxxxx> >> <mailto:majordomo@xxxxxxxxxxxxxxx <mailto:majordomo@xxxxxxxxxxxxxxx>> >> More majordomo info at http://vger.kernel.org/majordomo-info.html >>
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