Bug 1941987 - [gss][rados] Ceph autoscaler is not managing the warning "MANY_OBJECTS_PER_PG X pools have many more objects per pg than average"
Summary: [gss][rados] Ceph autoscaler is not managing the warning "MANY_OBJECTS_PER_PG...
Keywords:
Status: CLOSED DUPLICATE of bug 1942171
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: RADOS
Version: 4.2
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: ---
: 5.1
Assignee: Neha Ojha
QA Contact: Manohar Murthy
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-03-23 11:09 UTC by Geo Jose
Modified: 2024-10-01 17:45 UTC (History)
13 users (show)

Fixed In Version:
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Last Closed: 2021-03-25 01:45:20 UTC
Embargoed:

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Description Geo Jose 2021-03-23 11:09:36 UTC 
Description of problem:
Ceph autoscaler calculates pg num considering the percentage of data contained in the specific pools. It does not take the number of objects per PG into consideration.
In certain situations, pools can have a large number of objects but comparatively very small space utilization. And the cluster will end up with warning MANY_OBJECTS_PER_PG even though autobalancer is enabled.
In such cases, we need to manually increase the PG number of the pool or change the mon_pg_warn_max_object_skew value.

Should this be handled by autobalancer?


Version-Release number of selected component (if applicable):
 RHCS 4.2
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