Hi Wido, This seems similar to what our dumpling tunables cluster does when a few particular osds go down... Though in our case the remapped pgs are correctly shown as remapped, not clean.
The fix in our case will be to enable the vary_r tunable (which will move some data). Cheers, Dan On 24 Oct 2016 22:19, "Wido den Hollander" <w...@42on.com> wrote: > > Hi, > > On a cluster running Hammer 0.94.9 (upgraded from Firefly) I have 29 remapped PGs according to the OSDMap, but all PGs are active+clean. > > osdmap e111208: 171 osds: 166 up, 166 in; 29 remapped pgs > > pgmap v101069070: 6144 pgs, 2 pools, 90122 GB data, 22787 kobjects > 264 TB used, 184 TB / 448 TB avail > 6144 active+clean > > The OSDMap shows: > > root@mon1:~# ceph osd dump|grep pg_temp > pg_temp 4.39 [160,17,10,8] > pg_temp 4.52 [161,16,10,11] > pg_temp 4.8b [166,29,10,7] > pg_temp 4.b1 [5,162,148,2] > pg_temp 4.168 [95,59,6,2] > pg_temp 4.1ef [22,162,10,5] > pg_temp 4.2c9 [164,95,10,7] > pg_temp 4.330 [165,154,10,8] > pg_temp 4.353 [2,33,18,54] > pg_temp 4.3f8 [88,67,10,7] > pg_temp 4.41a [30,59,10,5] > pg_temp 4.45f [47,156,21,2] > pg_temp 4.486 [138,43,10,7] > pg_temp 4.674 [59,18,7,2] > pg_temp 4.7b8 [164,68,10,11] > pg_temp 4.816 [167,147,57,2] > pg_temp 4.829 [82,45,10,11] > pg_temp 4.843 [141,34,10,6] > pg_temp 4.862 [31,160,138,2] > pg_temp 4.868 [78,67,10,5] > pg_temp 4.9ca [150,68,10,8] > pg_temp 4.a83 [156,83,10,7] > pg_temp 4.a98 [161,94,10,7] > pg_temp 4.b80 [162,88,10,8] > pg_temp 4.d41 [163,52,10,6] > pg_temp 4.d54 [149,140,10,7] > pg_temp 4.e8e [164,78,10,8] > pg_temp 4.f2a [150,68,10,6] > pg_temp 4.ff3 [30,157,10,7] > root@mon1:~# > > So I tried to restart osd.160 and osd.161, but that didn't chance the state. > > root@mon1:~# ceph pg 4.39 query > { > "state": "active+clean", > "snap_trimq": "[]", > "epoch": 111212, > "up": [ > 160, > 17, > 8 > ], > "acting": [ > 160, > 17, > 8 > ], > "actingbackfill": [ > "8", > "17", > "160" > ], > > In all these PGs osd.10 is involved, but that OSD is down and out. I tried marking it as down again, but that didn't work. > > I haven't tried removing osd.10 yet from the CRUSHMap since that will trigger a rather large rebalance. > > This cluster is still running with the Dumpling tunables though, so that might be the issue. But before I trigger a very large rebalance I wanted to check if there are any insights on this one. > > Thanks, > > Wido > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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