I’m looking at iostat and most of the IO is read, so I think it would still take a while if it was still single threaded
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util sda 0.00 0.50 0.00 5.50 0.00 22.25 8.09 0.00 0.00 0.00 0.00 0.00 0.00 sdb 0.00 0.50 0.00 5.50 0.00 22.25 8.09 0.00 0.00 0.00 0.00 0.00 0.00 sdc 0.00 356.00 498.50 3.00 1994.00 1436.00 13.68 1.24 2.48 2.38 18.00 1.94 97.20 sdd 0.50 0.00 324.50 0.00 1484.00 0.00 9.15 0.97 2.98 2.98 0.00 2.98 96.80 sde 0.00 0.00 300.50 0.00 1588.00 0.00 10.57 0.98 3.25 3.25 0.00 3.25 97.80 sdf 0.00 13.00 197.00 95.50 1086.00 1200.00 15.63 121.41 685.70 4.98 2089.91 3.42 100.00 md1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 md0 0.00 0.00 0.00 5.50 0.00 22.00 8.00 0.00 0.00 0.00 0.00 0.00 0.00 sdg 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdm 0.00 0.00 262.00 0.00 1430.00 0.00 10.92 0.99 3.78 3.78 0.00 3.76 98.60 sdi 0.00 113.00 141.00 337.00 764.00 3340.00 17.17 98.93 191.24 3.65 269.73 2.06 98.40 sdk 1.00 42.50 378.50 74.50 2004.00 692.00 11.90 145.21 278.94 2.68 1682.44 2.21 100.00 sdn 0.00 0.00 250.50 0.00 1346.00 0.00 10.75 0.97 3.90 3.90 0.00 3.88 97.20 sdj 0.00 67.50 94.00 287.50 466.00 2952.00 17.92 144.55 589.07 5.43 779.90 2.62 100.00 sdh 0.00 85.50 158.00 176.00 852.00 2120.00 17.80 144.49 500.04 5.05 944.40 2.99 100.00 sdl 0.00 0.00 173.00 9.50 956.00 300.00 13.76 2.85 15.64 5.73 196.00 5.41 98.80 From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Jan Schermer Sent: 10 November 2015 12:07 To: Nick Fisk <n...@fisk.me.uk> Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] Chown in Parallel I would just disable barriers and enable them afterwards(+sync), should be a breeze then. Jan On 10 Nov 2015, at 12:58, Nick Fisk <n...@fisk.me.uk <mailto:n...@fisk.me.uk> > wrote: I’m currently upgrading to Infernalis and the chown stage is taking a log time on my OSD nodes. I’ve come up with this little one liner to run the chown’s in parallel find /var/lib/ceph/osd -maxdepth 1 -mindepth 1 -print | xargs -P12 -n1 chown -R ceph:ceph NOTE: You still need to make sure the other directory’s in the /var/lib/ceph folder are updated separately but this should speed up the process for machines with larger number of disks. Nick _______________________________________________ ceph-users mailing list <mailto:ceph-users@lists.ceph.com> ceph-users@lists.ceph.com <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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