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Bug #16919
closedMDS: Standby replay daemons don't drop purged strays
% Done:
0%
Source:
other
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Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
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Crash signature (v1):
Crash signature (v2):
Description
This is not fatal, because the inodes will ultimately end up at the top of the LRU list and get trimmed, but it's a weird behaviour and it leads to standby-replay daemons (and by extension active daemons when a failure happens) having inflated caches.
Reproduce by just running one active and one standby-replay, and then create and delete a load of files, unmount a client and flush the journal: you'll see the active daemon's inode count fall back down, but the inode count on the standby-replay will remain high, and if you dump its cache you can see all the strays.
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