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Bug #15432

open

kcephfs: umount -f can fail after mds reconnect failure

Added by Sage Weil about 8 years ago. Updated over 3 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Crash signature (v1):
Crash signature (v2):

Description

We've seen this several times on the lab cluster and teuthology:

- fail to reconnect to mds for some reason
- umount f
 mount doesn't go away..

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 #2

Updated by Zheng Yan about 8 years ago

find a bug that may cause forced umount hang
https://github.com/ceph/ceph-client/commit/e9344de458cd61efac6cccb98c785164b53d9c61

In my test, cleanup dirty data/metadata and mds requests work well. But it still can't cleanup pages under writeback. 'umount -f' hangs if there are hang OSD requests,

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 #3

Updated by Ian Colle over 7 years ago

  • Assignee set to Zheng Yan

Zheng - is this still an issue?

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 #4

Updated by Zheng Yan over 7 years ago

  • Status changed from New to 12
  • Priority changed from Urgent to Normal

It's not completed resolved. 'umount -f' hangs if there are hang OSD requests (caused by unhealth OSD cluster or libceph bug)

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 #5

Updated by Zheng Yan about 7 years ago

base on Jeff's ENOSPC work, It should be easy to implement function that abort pending osd requests for 'umount -f'

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 #6

Updated by Patrick Donnelly over 4 years ago

  • Status changed from 12 to New
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 #7

Updated by Patrick Donnelly over 3 years ago

  • Assignee deleted (Zheng Yan)
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