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Bug #36703
closedMDS admin socket command `dump cache` with a very large cache will hang/kill the MDS
% Done:
0%
Source:
Community (dev)
Tags:
Backport:
luminous,mimic
Regression:
No
Severity:
2 - major
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
The MDS tries to dump the cache to a formatter which will not work well if the MDS cache is too large (probably starting around 1GB).
Till we fully fix the underlying issue, MDS can err back if the cache is too large to dump. Need to do tests with large cache sizes to determine the limit.
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