Re: Kicking 'Remapped' PGs

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 Gregory Farnum <greg@xxxxxxxxxxx> wrote:

Oh. That's strange; they are all mapped to two OSDs but are placed on
two different ones. I'm...not sure why that would happen. Are these
PGs active? What's the full output of "ceph -s"?

Those 4 PG’s went inactive at some point, and we had the luxury of  time to understand how we arrived at this state before we truly have to fix it (but that time is soon). 
So...We kicked a couple of OSD’s out yesterday to let the cluster re-shuffle things (osd.19 and osd.34…both of which were non-primary copies of the ‘acting’ PG map) and now the cluster status is even more interesting, IMHO: 

ceph@nc48-n1:/ceph-deploy/nautilus$ ceph -s
    cluster 68bc69c1-1382-4c30-9bf8-480e32cc5b92
     health HEALTH_WARN 2 pgs stuck inactive; 2 pgs stuck unclean; nodeep-scrub flag(s) set; crush map has legacy tunables
     monmap e1: 3 mons at {nc48-n1=10.253.50.211:6789/0,nc48-n2=10.253.50.212:6789/0,nc48-n3=10.253.50.213:6789/0}, election epoch 564, quorum 0,1,2 nc48-n1,nc48-n2,nc48-n3
     osdmap e80862: 94 osds: 94 up, 92 in
            flags nodeep-scrub
      pgmap v1954234: 6144 pgs, 2 pools, 35251 GB data, 4419 kobjects
            91727 GB used, 245 TB / 334 TB avail
                6140 active+clean
                   2 remapped
                   2 active+clean+scrubbing
ceph@nc48-n1:/ceph-deploy/nautilus$ ceph pg dump_stuck
ok
pg_stat    objects    mip    degr    unf    bytes    log    disklog    state    state_stamp    v    reported    up    up_primary    acting    acting_primary    last_scrub    scrub_stamp    last_deep_scrub    deep_scrub_stamp
11.e2f    280    0    0    0    2339844181    3001    3001    remapped    2015-04-23 13:18:59.299589    68310'51082    80862:121916    [77,4]    77    [77,34]    77    68310'51082    2015-04-23 11:40:11.565487    0'0    2014-10-20 13:41:46.122624
11.323    282    0    0    0    2357186647    3001    3001    remapped    2015-04-23 13:18:58.970396    70105'48961    80862:126346    [0,37]    0    [0,19]    0    70105'48961    2015-04-23 11:47:02.980145    8145'44375    2015-03-30 16:09:36.975875

-- 
Paul
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