Bug #11342: librbd notification race condition on snap_create - rbd - Ceph

Actions

Copy link

Bug #11342

closed

librbd notification race condition on snap_create

Added by Jason Dillaman about 9 years ago. Updated almost 9 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Jason Dillaman

Target version:

% Done:

Source:

other

Tags:

Backport:

hammer

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

It's possible for the call to snap_create to complete before a notification is sent indicating that the header has been updated. This only occurs when the snap_create call is proxied to an exclusive lock owner. This is resulting in very sporadic failures of 'TestLibRBD.SnapCreateViaLockOwner'.

[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from TestLibRBD
[ RUN      ] TestLibRBD.SnapCreateViaLockOwner
using new format!
test/librbd/test_librbd.cc:2453: Failure
Value of: image2.snap_exists("snap1")
  Actual: false
Expected: true