On Sun, Mar 17, 2013 at 7:56 PM, Gregory Farnum <g...@inktank.com> wrote: > On Sunday, March 17, 2013 at 4:46 AM, Andrey Korolyov wrote: >> Hi, >> >> from osd tree: >> >> -16 4.95 host 10.5.0.52 >> 32 1.9 osd.32 up 2 >> 33 1.05 osd.33 up 1 >> 34 1 osd.34 up 1 >> 35 1 osd.35 up 1 >> >> df -h: >> /dev/sdd3 3.7T 595G 3.1T 16% /var/lib/ceph/osd/32 >> /dev/sde3 3.7T 332G 3.4T 9% /var/lib/ceph/osd/33 >> /dev/sdf3 3.7T 322G 3.4T 9% /var/lib/ceph/osd/34 >> /dev/sdg3 3.7T 320G 3.4T 9% /var/lib/ceph/osd/35 >> >> -10 2 host 10.5.0.32 >> 18 1 osd.18 up 1 >> 26 1 osd.26 up 1 >> >> df -h: >> /dev/sda2 926G 417G 510G 45% /var/lib/ceph/osd/18 >> /dev/sdb2 926G 431G 496G 47% /var/lib/ceph/osd/26 >> >> Since osds on 10.5.0.32 does not contain garbage bytes almost for >> sure, seems to be some weirdness in the placement. Crush rules are >> almost default, there is no adjustment by node subsets. Any thoughts >> will be appreciated! >> > Do you have any other nodes? What's the rest of your osd tree look like? > > I do note that at a first glance, you've got 1569GB in 10.5.0.52 and 848 in > 10.5.0.32, which is a 1.85 differential when you'd really like a ~2.5 > differential (based on the very odd CRUSH weights you've assigned to each > device, and the hosts). I suspect/hope you've also got something weird going > on with the rest of your interior nodes (not pictured here), but perhaps not > — and either way I'd recommend fixing up the rest of your weights and seeing > if that improves the distribution.
Nope, all other osds have weight one(and each host contains two osds, this many-disk system is an experimental one). This host had round values recently, I`ve just changed weights a bit to test a speed of data rearrangement. Problem existed since 10.5.0.52 entered to the data placement with default ``1'' osd weights. > -Greg > Software Engineer #42 @ http://inktank.com | http://ceph.com > > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
