Re: Help Basically..

Lee <lquince@xxxxxxxxx> · Sun, 2 Sep 2018 15:41:39 +0100

Hi David,

Yes heath detail outputs all the errors etc and recovery / backfill is going on, just taking time 25% misplaced and 1.5 degraded.

I can list out the pools and see sizes etc..

My main problem is I have no client IO from a read perspective, I cannot start vms I'm openstack and ceph -w states that rd is zero most of the time.

I can restart the nodes and the osd reconnect and come in correctly..

I was chasing a missing object but was able to correct that by setting the crush weight to 0.0 on the secondary.

Kind regards

Lee

On Sun, 2 Sep 2018, 13:43 David C, <dcsysengineer@xxxxxxxxx> wrote:
Does "ceph health detail" work?
Have you manually confirmed the OSDs on the nodes are working?
What was the replica size of the pools?
Are you seeing any progress with the recovery?

On Sun, Sep 2, 2018 at 9:42 AM Lee <lquince@xxxxxxxxx> wrote:
Running 0.94.5 as part of a Openstack enviroment, our ceph setup is 3x OSD Nodes 3x MON Nodes, yesterday we had a aircon outage in our hosting enviroment, 1 OSD node failed (offline with a the journal SSD dead) left with 2 nodes running correctly, 2 hours later a second OSD node failed complaining of readwrite errors to the physical drives, i assume this was a heat issue as when rebooted this came back online ok and ceph started to repair itself. We have since brought the first failed node back on by replacing the ssd and recreating the journals hoping it would all repair.. Our pools are min 2 repl. 

The problem we have is client IO (read) is totally blocked, and when I query the stuck PG's it just hangs..

For example the check version command just errors with:

Error EINTR: problem getting command descriptions from on various OSD's so I cannot even query the inactive PG's

root@node31-a4:~# ceph -s
    cluster 7c24e1b9-24b3-4a1b-8889-9b2d7fd88cd2
     health HEALTH_WARN
            83 pgs backfill
            2 pgs backfill_toofull
            3 pgs backfilling
            48 pgs degraded
            1 pgs down
            31 pgs incomplete
            1 pgs recovering
            29 pgs recovery_wait
            1 pgs stale
            48 pgs stuck degraded
            31 pgs stuck inactive
            1 pgs stuck stale
            148 pgs stuck unclean
            17 pgs stuck undersized
            17 pgs undersized
            599 requests are blocked > 32 sec
            recovery 111489/4697618 objects degraded (2.373%)
            recovery 772268/4697618 objects misplaced (16.440%)
            recovery 1/2171314 unfound (0.000%)
     monmap e5: 3 mons at {bc07s12-a7=172.27.16.11:6789/0,bc07s13-a7=172.27.16.21:6789/0,bc07s14-a7=172.27.16.15:6789/0}
            election epoch 198, quorum 0,1,2 bc07s12-a7,bc07s14-a7,bc07s13-a7
     osdmap e18727: 25 osds: 25 up, 25 in; 90 remapped pgs
      pgmap v70996322: 1792 pgs, 13 pools, 8210 GB data, 2120 kobjects
            16783 GB used, 6487 GB / 23270 GB avail
            111489/4697618 objects degraded (2.373%)
            772268/4697618 objects misplaced (16.440%)
            1/2171314 unfound (0.000%)
                1639 active+clean
                  66 active+remapped+wait_backfill
                  30 incomplete
                  25 active+recovery_wait+degraded
                  15 active+undersized+degraded+remapped+wait_backfill
                   4 active+recovery_wait+degraded+remapped
                   4 active+clean+scrubbing
                   2 active+remapped+wait_backfill+backfill_toofull
                   1 down+incomplete
                   1 active+remapped+backfilling
                   1 active+clean+scrubbing+deep
                   1 stale+active+undersized+degraded
                   1 active+undersized+degraded+remapped+backfilling
                   1 active+degraded+remapped+backfilling
                   1 active+recovering+degraded
recovery io 29385 kB/s, 7 objects/s
  client io 5877 B/s wr, 1 op/s

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