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Bug #42509

closed

ceph balancer should consider number of OSD available for the pool

Added by Марк Коренберг over 4 years ago. Updated over 4 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Tags:
Backport:
nautilus
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
31636
Crash signature (v1):
Crash signature (v2):

Description

For small pools (i.e. cephfs metadata for example) it considers too small number of pools. For example, for my 16-OSD cluster, it suggests 4 PGs. If I agreed with that, I would lose IOPS since data will not be distributed by all of my OSDs.

So, balancer should limit the minimum number of PGs to at least, say, 3*<number of OSDsavailable for the pool>.

Related issues 1 (0 open — 1 closed)

Copied to mgr - Backport #42999: nautilus: ceph balancer should consider number of OSD available for the poolResolvedNathan CutlerActions
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