In certain cases (Luminous) it can actually be faster to destroy an OSD and recreate it
than to let it backfill huge maps, but I think that’s been improved by Nautilus.
You might also try setting
osd_op_queue_cut_off = high
to reduce the impact of recovery on client operations. This became the default setting at
Octopus; yours is likely set to low.
I did the same but it moved 200K keys/s!
On Wed, Dec 2, 2020 at 5:14 PM Stefan Kooman <stefan(a)bit.nl> wrote:
On 12/1/20 12:37 AM, Seena Fallah wrote:
Hi all,
Is there any configuration to slow down keys/s in recovery mode?
Not just keys, but you can limit recovery / backfill like this:
ceph tell 'osd.*' injectargs '--osd_max_backfills 1'
ceph tell 'osd.*' injectargs '--osd_recovery_max_active 1'
Gr. Stefan
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