Re: How can I increase or decrease the number of osd backfilling instantly

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Hello Jaemin,

it's mclock now.

Read this:

https://docs.ceph.com/en/reef/rados/configuration/mclock-config-ref/

and apply that:

https://docs.ceph.com/en/reef/rados/configuration/mclock-config-ref/#steps-to-modify-mclock-max-backfills-recovery-limits

Best,
Malte

On 28.06.24 08:54, Jaemin Joo wrote:
Hi All,

I'd like to speed up or slow down osd recovery in ceph v18.2.1.
According to the page (
https://www.suse.com/ko-kr/support/kb/doc/?id=000019693 ), I understand
that osd_max_backfills, osd_recovery_max_active have to be increased or
decreased.
but It seems not to impact the number of osd backfilling instantly. so I
tried to restart all of the osds even though I didn't need to restart osds.
I wonder how long it takes to show that the number of backfilling is
increased or decreased If the osds is not restarted. and Is there a way to
increase or decrease the number of backfilling instantly after the
configuration is changed.
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