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Bug #50238

mds: ceph.dir.rctime for older snaps is erroneously updated

Added by Milind Changire 13 days ago. Updated 13 days ago.

Status:
New
Priority:
Normal
Category:
Correctness/Safety
Target version:
% Done:

0%

Source:
Development
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
snapshots
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

vxattr ceph.dir.rctime shows new values for older snaps when new snap is created or when live data is updated.

History

#1 Updated by Milind Changire 13 days ago

To fix this issue:
  1. the correct sequence of snap IDs must be chosen to be updated on a mksnap request (snapshot create request)
  2. the snapshot sequence numbers for each SnapRealm must be persisted and reloaded when the system is restarted

#2 Updated by Patrick Donnelly 13 days ago

  • Subject changed from snapshot: ceph.dir.rctime for older snaps is erroneously updated to mds: ceph.dir.rctime for older snaps is erroneously updated
  • Target version set to v17.0.0
  • Source set to Development

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