On Mon, Jul 1, 2013 at 8:49 AM, Pierre BLONDEAU <pierre.blondeau@xxxxxxxxxx> wrote: > Hy, > > I use the 0.64.1 version of CEPH on debian wheezy for serveur and ubuntu > precise ( with raring kernel 3.8.0-25 ) as client. > > My problem is the distribution of data on the cluster. I have 3 servers each > with 6 osd, but the distribution is very heterogeneous : > 86% /var/lib/ceph/osd/ceph-15 > 67% /var/lib/ceph/osd/ceph-13 > 95% /var/lib/ceph/osd/ceph-14 > 92% /var/lib/ceph/osd/ceph-17 > 86% /var/lib/ceph/osd/ceph-12 > 20% /var/lib/ceph/osd/ceph-16 > 47% /var/lib/ceph/osd/ceph-10 > 85% /var/lib/ceph/osd/ceph-11 > 67% /var/lib/ceph/osd/ceph-6 > 86% /var/lib/ceph/osd/ceph-8 > 29% /var/lib/ceph/osd/ceph-9 > 64% /var/lib/ceph/osd/ceph-2 > 68% /var/lib/ceph/osd/ceph-0 > 86% /var/lib/ceph/osd/ceph-3 > 67% /var/lib/ceph/osd/ceph-4 > 79% /var/lib/ceph/osd/ceph-1 > 58% /var/lib/ceph/osd/ceph-18 > > Friday, one of my OSD was 95%. I could not write. I was advised on IRC to > change the weight of the OSD. I put it at 0.8. The data were migrated to > another OSD, but the distribution is still very heterogeneous. A few hours > later, I had the same problem with another OSD. > > I tried to change the weights depending on the place occupied, but it is not > much better. For example: 16 OSD is very empty. > > Do you have any idea to solve my problem ? It looks like probably your PG counts are too low for the number of OSDs you have. http://ceph.com/docs/master/rados/operations/placement-groups/ -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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