Hi,
I’m not sure if I remember correctly but I believe the backfill is
preventing the repair to happen. I think it has been discussed a
couple of times on this list but I don’t know right now if you can
tweak anything to prioritize the repair, I believe there is, but not
sure. It looks like your backfill could take quite some time…
Zitat von Frank Schilder <frans@xxxxxx>:
Hi all,
we have an inconsistent PG for a couple of days now (octopus latest):
# ceph status
cluster:
id:
health: HEALTH_ERR
1 scrub errors
Possible data damage: 1 pg inconsistent
services:
mon: 5 daemons, quorum ceph-01,ceph-02,ceph-03,ceph-25,ceph-26 (age 8d)
mgr: ceph-25(active, since 8d), standbys: ceph-26, ceph-03,
ceph-02, ceph-01
mds: con-fs2:8 4 up:standby 8 up:active
osd: 1086 osds: 1071 up (since 13h), 1070 in (since 4d); 547 remapped pgs
task status:
data:
pools: 14 pools, 17185 pgs
objects: 1.39G objects, 2.5 PiB
usage: 3.1 PiB used, 8.4 PiB / 11 PiB avail
pgs: 305530535/11943726075 objects misplaced (2.558%)
16614 active+clean
516 active+remapped+backfill_wait
23 active+clean+scrubbing+deep
21 active+remapped+backfilling
10 active+remapped+backfill_wait+forced_backfill
1 active+clean+inconsistent
io:
client: 143 MiB/s rd, 135 MiB/s wr, 2.21k op/s rd, 2.33k op/s wr
recovery: 0 B/s, 224 objects/s
I issued "ceph pg repair 11.1ba" more than 36 hours ago, but it
never got executed (checked the logs for repair state). The usual
wait time we had on our cluster so far was 2-6 hours. 36 hours is
unusually long. The pool in question is moderately busy and has no
misplaced ojects. Its only unhealthy PG is the inconsistent one.
Are there situations in which ceph cancels/ignores a pg repair?
Is there any way to check if it is actually still scheduled to happen?
Is there a way to force it a bit more urgently?
The error was caused by a read error, the drive is healthy:
2022-10-11T19:19:13.621470+0200 osd.231 (osd.231) 40 : cluster [ERR]
11.1ba shard 294(6) soid
11:5df75341:::rbd_data.1.b688997dc79def.000000000005d530:head :
candidate had a read error
2022-10-11T19:26:22.344862+0200 osd.231 (osd.231) 41 : cluster [ERR]
11.1bas0 deep-scrub 0 missing, 1 inconsistent objects
2022-10-11T19:26:22.344866+0200 osd.231 (osd.231) 42 : cluster [ERR]
11.1ba deep-scrub 1 errors
2022-10-11T19:26:23.356402+0200 mgr.ceph-25 (mgr.144330518) 378551 :
cluster [DBG] pgmap v301249: 17334 pgs: 1 active+clean+inconsistent,
2 active+clean+scrubbing, 26 active+remapped+backfill_wait, 13
active+remapped+backfilling, 19 active+clean+scrubbing+deep, 17273
active+clean; 2.5 PiB data, 3.1 PiB used, 8.4 PiB / 11 PiB avail;
193 MiB/s rd, 181 MiB/s wr, 4.95k op/s; 16126995/11848511097 objects
misplaced (0.136%); 0 B/s, 513 objects/s recovering
2022-10-11T19:26:24.246194+0200 mon.ceph-01 (mon.0) 633486 : cluster
[ERR] Health check failed: 1 scrub errors (OSD_SCRUB_ERRORS)
2022-10-11T19:26:24.246215+0200 mon.ceph-01 (mon.0) 633487 : cluster
[ERR] Health check failed: Possible data damage: 1 pg inconsistent
(PG_DAMAGED)
Thanks and best regards,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14
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