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Bug #14986

closed

rbd export/export-diff with needs to protect against unintended journal replay

Added by Jason Dillaman about 8 years ago. Updated about 8 years ago.

Status:
Closed
Priority:
High
Assignee:
-
Target version:
-
% Done:

0%

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

Description

If journaling is enabled on an image, reading from the image HEAD will result in a journal replay. If the image was concurrently opened by another processs (e.g. qemu), this might lead to unexpected behavior as the exclusive lock is transitions back-and-force between the two processes.

Suggest adding protection to prevent exporting an image HEAD when journaling is enabled (exporting a snapshot is fine) unless a "--force" option is provided.

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 #1

Updated by Josh Durgin about 8 years ago

  • Priority changed from Normal to High
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 #2

Updated by Jason Dillaman about 8 years ago

  • Status changed from New to Closed

The journal actually won't be replayed since export/export-diff open the image read-only. This prevents the journal (and exclusive lock) from being used.

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