Removing OSD very slow (objects misplaced)

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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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