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Bug #52537

closed

pool validation lockup on selfmanaged_snap_create()

Added by Ilya Dryomov over 2 years ago. Updated over 2 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Ilya Dryomov
Target version:
-
% Done:

0%

Source:
Tags:
Backport:
pacific
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
43086
Crash signature (v1):
Crash signature (v2):

Description

Concurrent rbd_pool_init() or rbd_create() operations on an unvalidated (uninitialized) pool trigger a lockup in ValidatePoolRequest state machine caused by blocking selfmanaged_snap_{create,remove}() calls.
There are two reactor threads by default (librados_thread_count) but we effectively need N + 1 reactor threads for N concurrent pool validation requests, especially for small N.

Related issues 1 (0 open — 1 closed)

Copied to rbd - Backport #52559: pacific: pool validation lockup on selfmanaged_snap_create()ResolvedIlya DryomovActions
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 #1

Updated by Ilya Dryomov over 2 years ago

  • Subject changed from pool validation lockup to pool validation lockup on selfmanaged_snap_create()
  • Description updated (diff)
  • Status changed from New to In Progress
  • Assignee set to Ilya Dryomov
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 #2

Updated by Ilya Dryomov over 2 years ago

  • Backport set to pacific
  • Pull request ID set to 43086
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 #3

Updated by Ilya Dryomov over 2 years ago

  • Status changed from In Progress to Fix Under Review
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 #4

Updated by Ilya Dryomov over 2 years ago

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

Updated by Backport Bot over 2 years ago

  • Copied to Backport #52559: pacific: pool validation lockup on selfmanaged_snap_create() added
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 #6

Updated by Loïc Dachary over 2 years ago

  • Status changed from Pending Backport to Resolved

While running with --resolve-parent, the script "backport-create-issue" noticed that all backports of this issue are in status "Resolved" or "Rejected".

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