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Bug #35916

closed

mds: rctime may go back

Added by Zheng Yan over 5 years ago. Updated over 5 years ago.

Status:
Resolved
Priority:
High
Assignee:
Zheng Yan
Category:
-
Target version:
Ceph - v14.0.0
% Done:

0%

Source:
Q/A
Tags:
Backport:
mimic,luminous
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

code like below can cause rctime to go back

if (new_mtime > pi.inode.ctime)
pi.inode.ctime = pi.inode.rstat.rctime = new_mtime;

The reason is that clients' time is not reliable.

Related issues 2 (0 open — 2 closed)

Copied to CephFS - Backport #36135: luminous: mds: rctime may go backResolvedNathan CutlerActions
Copied to CephFS - Backport #36136: mimic: mds: rctime may go backResolvedNathan CutlerActions
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 #1

Updated by Zheng Yan over 5 years ago

  • Status changed from New to Fix Under Review
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 #2

Updated by Zheng Yan over 5 years ago

/ceph/teuthology-archive/pdonnell-2018-09-08_06:58:28-kcephfs-wip-pdonnell-testing-20180908.044939-distro-basic-smithi/2994828/teuthology.log

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 #3

Updated by Patrick Donnelly over 5 years ago

  • Subject changed from rctime may go back to mds: rctime may go back
  • Assignee set to Zheng Yan
  • Priority changed from Normal to High
  • Target version set to v14.0.0
  • Source set to Q/A
  • Backport set to mimic,luminous
  • Component(FS) MDS added
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 #4

Updated by Patrick Donnelly over 5 years ago

  • Status changed from Fix Under Review to Pending Backport
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 #5

Updated by Nathan Cutler over 5 years ago

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 #6

Updated by Nathan Cutler over 5 years ago

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 #7

Updated by Nathan Cutler over 5 years ago

  • Status changed from Pending Backport to Resolved
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