Bug 2215021 - [GSS][ODF 4.12] Failing to respond to cache pressure
Summary: [GSS][ODF 4.12] Failing to respond to cache pressure
Keywords:
Status: NEW
Alias: None
Product: Red Hat OpenShift Data Foundation
Classification: Red Hat Storage
Component: ceph
Version: 4.12
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: ---
: ---
Assignee: Kotresh HR
QA Contact: Elad
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-06-14 13:33 UTC by Rafrojas
Modified: 2023-08-09 16:37 UTC (History)
8 users (show)

Fixed In Version:
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Description Rafrojas 2023-06-14 13:33:47 UTC
Description of problem (please be detailed as possible and provide log
snippests):
After increasing the value of KCS 2 times the issue persists


Version of all relevant components (if applicable):
ODF operator 4.11.3 + Mode Internal

Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?
Not at the moment the warning is constantly increasing

Is there any workaround available to the best of your knowledge?
No

Rate from 1 - 5 the complexity of the scenario you performed that caused this
bug (1 - very simple, 5 - very complex)?


Can this issue reproducible?
Constantly

Can this issue reproduce from the UI?


If this is a regression, please provide more details to justify this:


Steps to Reproduce:
1.
2.
3.


Actual results:


Expected results:


Additional info:

Comment 3 Malay Kumar parida 2023-06-14 17:09:07 UTC
Seems like some issue related to ceph configuration, Moving to rook for investigation.

Comment 4 Travis Nielsen 2023-06-14 21:18:01 UTC
Rook sets the mds_cache_memory_limit to 50% of the memory limit [1], which by default in ODF is set to 8Gi. 

Have you tried increasing the 'mds' memory limits specified in the StorageCluster CR to see if more memory will help resolve the warning? 

[1] https://github.com/rook/rook/blob/cd27f17ce8a9fd22000c961cee3e0a147707074f/pkg/operator/ceph/file/mds/config.go#L72-L74


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