Hi!
I have a server (ceph version 0.80.7, links 10Gb), there is set: 1 pool is write to 5 osd. I'm using the iscsi-target write to this pool (disk rbd3) some data from other server. And speed on network is near 150 Mbit / sec. In this case, iostat shows the usage rbd3 drive 100%, but drives on which there are 5 osd (sdc sdd sde sdf sdg) loaded in the region of 20% each. Who knows why this could be and what i can run the utility for the diagnosis?
iostat -x 1
avg-cpu: %user %nice %system %iowait %steal %idle
1.80 0.00 1.46 0.71 0.00 96.03
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 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdb 0.00 9.00 0.00 6.00 0.00 68.00 22.67 0.00 0.67 0.00 0.67 0.67 0.40
sdc 0.00 2.00 0.00 33.00 0.00 7756.00 470.06 2.76 83.76 0.00 83.76 5.45 18.00
sdd 0.00 0.00 0.00 59.00 0.00 9236.00 313.08 0.57 9.69 0.00 9.69 6.58 38.80
sde 0.00 0.00 0.00 29.00 0.00 5112.00 352.55 0.43 13.93 0.00 13.93 7.03 20.40
sdf 0.00 0.00 0.00 28.00 0.00 4612.00 329.43 0.26 9.14 0.00 9.14 6.57 18.40
sdg 0.00 0.00 0.00 24.00 0.00 4032.00 336.00 0.22 8.67 0.00 8.67 6.67 16.00
rbd0 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
rbd1 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
rbd2 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
rbd3 0.00 0.00 0.00 318.00 0.00 20045.00 126.07 7.28 28.29 0.00 28.29 3.13 99.60
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