Hi Sridhar
Thank you for the suggestion and the link. We'll stick with wpq for now
since it seems to work ok then upgrade to reef when we are HEALTH_OK,
and then back to mclock.
Mvh.
Torkil
On 18-01-2024 13:06, Sridhar Seshasayee wrote:
Hi,
Given that the first host added had 19 OSDs, with none of them anywhere
near the target capacity, and the one we just added has 22 empty OSDs,
having just 22 PGs backfilling and 1 recovering seems somewhat
underwhelming.
Is this to be expected with such a pool? Mclock profile is
high_recovery_ops.
Since you are already using the high_recovery_ops profile, you could
additionally try incrementing
"osd_max_backfills" (default: 1) by a small amount (2 or 3) using the
following procedure and see
if it improves the backfill rate:
https://docs.ceph.com/en/quincy/rados/configuration/mclock-config-ref/#steps-to-modify-mclock-max-backfills-recovery-limits
-Sridhar
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--
Torkil Svensgaard
Systems Administrator
Danish Research Centre for Magnetic Resonance DRCMR, Section 714
Copenhagen University Hospital Amager and Hvidovre
Kettegaard Allé 30, 2650 Hvidovre, Denmark
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