I adjusted the crush map, everything's OK now. Thanks for your help! On Wed, 23 Mar 2016 at 23:13 Matt Conner <[email protected]> wrote:
> Hi Zhang, > > In a 2 copy pool, each placement group is spread across 2 OSDs - that is > why you see such a high number of placement groups per OSD. There is a PG > calculator at http://ceph.com/pgcalc/. Based on your setup, it may be > worth using 2048 instead of 4096. > > As for stuck/degraded PGs, most are reporting as being on osd.0. Looking > at your OSD Tree, you somehow have 21 OSDs being reported with 2 being > labeled as osd.0; both up and in. I'd recommend trying to get rid of the > one listed on host 148_96 and see if it clears the issues. > > > > On Tue, Mar 22, 2016 at 6:28 AM, Zhang Qiang <[email protected]> > wrote: > >> Hi Reddy, >> It's over a thousand lines, I pasted it on gist: >> https://gist.github.com/dotSlashLu/22623b4cefa06a46e0d4 >> >> On Tue, 22 Mar 2016 at 18:15 M Ranga Swami Reddy <[email protected]> >> wrote: >> >>> Hi, >>> Can you please share the "ceph health detail" output? >>> >>> Thanks >>> Swami >>> >>> On Tue, Mar 22, 2016 at 3:32 PM, Zhang Qiang <[email protected]> >>> wrote: >>> > Hi all, >>> > >>> > I have 20 OSDs and 1 pool, and, as recommended by the >>> > doc( >>> http://docs.ceph.com/docs/master/rados/operations/placement-groups/), I >>> > configured pg_num and pgp_num to 4096, size 2, min size 1. >>> > >>> > But ceph -s shows: >>> > >>> > HEALTH_WARN >>> > 534 pgs degraded >>> > 551 pgs stuck unclean >>> > 534 pgs undersized >>> > too many PGs per OSD (382 > max 300) >>> > >>> > Why the recommended value, 4096, for 10 ~ 50 OSDs doesn't work? And >>> what >>> > does it mean by "too many PGs per OSD (382 > max 300)"? If per OSD has >>> 382 >>> > PGs I would have had 7640 PGs. >>> > >>> > _______________________________________________ >>> > ceph-users mailing list >>> > [email protected] >>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> > >>> >> >> _______________________________________________ >> ceph-users mailing list >> [email protected] >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >
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