I see that you have many inactive PGs, probably because the 6 OSD OUT+DOWN.
Problems with "flapping" OSD I use to solved:
* setting NOUP flag
* restarting the "fragile" OSDs
* check if everything is ok look ing their logs
* taking off the NOUP flag
Another solution is:
* Setting NOIN and NOUP flag
* Taking the fragile OSD out
* restarting the "fragile" OSDs
* check if everything is ok look ing their logs
* taking off the NOUP flag
* Take a coffee and wait till all data are drain
[]'s
Arthur (aKa Guilherme Geronimo)
On 04/09/2019 15:32, Bryan Stillwell wrote:
We are not using jumbo frames anywhere on this cluster
(all mtu 1500).
The cluster was originally built in October of 2016 and has the
following history:
2016-10-04: Created with Hammer (0.94.3)
2017-05-03: Upgraded to Hammer (0.94.10)
2017-10-09: Upgraded to Jewel (10.2.9)
2017-11-02: Upgraded to Jewel (10.2.10)
2018-04-30: Upgraded to Luminous (12.2.5)
2018-09-05: Upgraded to Luminous (12.2.8)
2019-04-05: Upgraded to Luminous (12.2.11)
2019-04-18: Upgraded to Luminous (12.2.12)
2019-07-26: Upgraded to Nautilus (14.2.2)
It wasn't until after the Nautilus upgrade when this problem started
showing up.
Here's the output you requested:
[root@a2mon002 ~]# ceph -s
cluster:
id: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
health: HEALTH_ERR
nodown,norebalance,noscrub,nodeep-scrub flag(s) set
1 nearfull osd(s)
19 pool(s) nearfull
1 scrub errors
Reduced data availability: 6014 pgs inactive, 3 pgs down,
5958 pgs peering, 83 pgs stale
Possible data damage: 1 pg inconsistent
Degraded data redundancy: 1601/81648846 objects degraded
(0.002%), 4 pgs degraded, 5 pgs undersized
1048 slow requests are blocked > 32 sec
services:
mon: 3 daemons, quorum a2mon002,a2mon003,a2mon004 (age 17m)
mgr: a2mon004(active, since 53m), standbys: a2mon003, a2mon002
mds: cephfs:2 {0=a2mon004=up:active(laggy or
crashed),1=a2mon003=up:active(laggy or crashed)} 1 up:standby
osd: 143 osds: 141 up, 137 in; 486 remapped pgs
flags nodown,norebalance,noscrub,nodeep-scrub
data:
pools: 20 pools, 6288 pgs
objects: 27.22M objects, 98 TiB
usage: 308 TiB used, 114 TiB / 422 TiB avail
pgs: 0.048% pgs unknown
95.611% pgs not active
1601/81648846 objects degraded (0.002%)
53012/81648846 objects misplaced (0.065%)
5379 peering
495 remapped+peering
269 active+clean
75 stale+peering
46 activating
7 stale+remapped+peering
3 unknown
3 active+undersized+degraded
3 down
2 activating+remapped
1 activating+undersized
1 active+clean+scrubbing
1 remapped+inconsistent+peering
1 activating+undersized+degraded
1 stale+activating
1 creating+peering
[root@a2mon002 ~]# ceph versions
{
"mon": {
"ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)": 3
},
"mgr": {
"ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)": 3
},
"osd": {
"ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)": 141
},
"mds": {
"ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)": 1
},
"overall": {
"ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)": 148
}
}
We had seen the slow peering shortly after the Nautilus upgrade, but
it eventually recovered. We then started filling the cluster up to
test another Nautilus bug (
https://tracker.ceph.com/issues/41255), but
then a disk started to die (which caused the inconsistent PG). When
we marked it out we ran into this peering problem again, but it seems
much worse this time.
Thanks,
Bryan
On Sep 4, 2019, at 11:55 AM, Guilherme Geronimo
<guilherme.geronimo(a)gmail.com <mailto:guilherme.geronimo@gmail.com>>
wrote:
Notice: This email is from an external sender.
Hey Bryan,
I suppose all nodes are using jumboframes (mtu 9000), right?
I would suggest to check OSD->MON communication.
Can you send the output os these commands for us?
* ceph -s
* ceph versions
[]'s
Arthur (aKa Guilherme Geronimo)
On 04/09/2019 14:18, Bryan Stillwell wrote:
Our test cluster is seeing a problem where
peering is going
incredibly slow shortly after upgrading it to Nautilus (14.2.2) from
Luminous (12.2.12).
From what I can tell it seems to be caused by "wait for new map"
taking a long time. When looking at dump_historic_slow_ops on
pretty much any OSD I see stuff like this:
# ceph daemon osd.112 dump_historic_slow_ops
[...snip...]
{
"description": "osd_pg_create(e180614 287.4b:177739
287.75:177739 287.1c3:177739 287.1cf:177739 287.1e1:177739
287.2dd:177739 287.2fc:177739 287.342:177739 287.382:177739)",
"initiated_at": "2019-09-03 15:12:41.366514",
"age": 4800.8847047119998,
"duration": 4780.0579745630002,
"type_data": {
"flag_point": "started",
"events": [
{
"time": "2019-09-03 15:12:41.366514",
"event": "initiated"
},
{
"time": "2019-09-03 15:12:41.366514",
"event": "header_read"
},
{
"time": "2019-09-03 15:12:41.366501",
"event": "throttled"
},
{
"time": "2019-09-03 15:12:41.366547",
"event": "all_read"
},
{
"time": "2019-09-03 15:39:03.379456",
"event": "dispatched"
},
{
"time": "2019-09-03 15:39:03.379477",
"event": "wait for new map"
},
{
"time": "2019-09-03 15:39:03.522376",
"event": "wait for new map"
},
{
"time": "2019-09-03 15:53:55.912499",
"event": "wait for new map"
},
{
"time": "2019-09-03 15:59:37.909063",
"event": "wait for new map"
},
{
"time": "2019-09-03 16:00:43.356023",
"event": "wait for new map"
},
{
"time": "2019-09-03 16:20:50.575498",
"event": "wait for new map"
},
{
"time": "2019-09-03 16:31:48.689415",
"event": "started"
},
{
"time": "2019-09-03 16:32:21.424489",
"event": "done"
}
]
}
It always seems to be in osd_pg_create() with multiple "wait for new
map" messages before it finally does something. What could be
causing it so long to get the OSD map? The mons don't appear to be
overloaded in any way.
Thanks,
Bryan
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