Hello list,
i'm using ceph 0.56.4 and i've to replace some drives. But while ceph is
backfilling / recovering all VMs have high latencies and sometimes
they're even offline. I just replace one drive at a time.
I putted in the new drives and i'm reweighting them from 0.0 to 1.0 in
0.1 steps.
I already lowered osd recovery max active = 2 and osd max backfills = 3,
but when i put them back at 1.0 the vms are nearly all down.
Right now some drives are SSDs so they're a lot faster than the HDDs i'm
going to replace them too.
Nothing in the logs but it is recovering at 3700MB/s that this is not
possible on SATA HDDs is clear.
Log example:
2013-04-10 20:55:33.711289 mon.0 [INF] pgmap v9293315: 8128 pgs: 233
active, 7876 active+clean, 19 active+recovery_wait; 557 GB data, 1168 GB
used, 7003 GB / 8171 GB avail; 2108KB/s wr, 329op/s; 31/309692 degraded
(0.010%); recovering 840 o/s, 3278MB/s
Greets,
Stefan
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