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Bug #41141
closedmds: recall capabilities more regularly when under cache pressure
% Done:
0%
Source:
Development
Tags:
Backport:
nautilus,mimic
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
If a client is doing a large parallel create workload, the MDS may not recall capabilities fast enough and the client capabilities grow without bound.
Two things should happen here: the MDS should more regularly recall client state. The upkeep thread currently operates every 5 seconds. Second, the MDS defaults for client recall are too conservative. A client may obtain significantly more capabilities than can be recalled.
See also: https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/AOYWQSONTFROPB4DXVYADWW7V25C3G6Z/
Updated by Patrick Donnelly over 4 years ago
- Status changed from New to Fix Under Review
- Pull request ID set to 29542
Updated by Patrick Donnelly over 4 years ago
- Status changed from Fix Under Review to Pending Backport
Updated by Nathan Cutler over 4 years ago
- Copied to Backport #41467: nautilus: mds: recall capabilities more regularly when under cache pressure added
Updated by Nathan Cutler over 4 years ago
- Copied to Backport #41468: mimic: mds: recall capabilities more regularly when under cache pressure added
Updated by Nathan Cutler almost 4 years ago
- Status changed from Pending Backport to Resolved
While running with --resolve-parent, the script "backport-create-issue" noticed that all backports of this issue are in status "Resolved" or "Rejected".
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