Re: Removing OSD very slow (objects misplaced)

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Hi erich,
You can reference following link:
https://www.suse.com/support/kb/doc/?id=000019693

Thanks,
Liang Zheng


E Taka <0etaka0@xxxxxxxxx> 于2022年12月16日周五 01:52写道:

> Hi,
>
> when removing some OSD with the command `ceph orch osd rm X`, the
> rebalancing starts very fast, but after a while it almost stalls with a
> very low recovering rate:
>
> Dec 15 18:47:17 … : cluster [DBG] pgmap v125312: 3361 pgs: 13
> active+clean+scrubbing+deep, 4 active+remapped+backfilling, 3344
> active+clean; 95 TiB data, 298 TiB used, 320 TiB / 618 TiB avail; 13 MiB/s
> rd, 3.9 MiB/s wr, 610 op/s; 403603/330817302 objects misplaced (0.122%);
> 1.1 MiB/s, 2 objects/s recovering
>
> As you can see, the rate is 2 Objects/s for over 400000 objects. `ceph orch
> osd rm status` shows long running draining processes (now over 4 days):
>
> OSD  HOST    STATE     PGS  REPLACE  FORCE  ZAP    DRAIN STARTED AT
> 64   ceph05  draining    1  False    False  False  2022-12-11
> 16:18:14.692636+00:00
>
>
> Is there y way to increase the speed of the draining/rebalancing?
>
> Thanks!
> Erich
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