Bug #18068: diff calculate can hide parent extents when examining first snapshot in clone - rbd - Ceph

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Bug #18068

closed

diff calculate can hide parent extents when examining first snapshot in clone

Added by Jason Dillaman over 7 years ago. Updated about 7 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Jason Dillaman

Target version:

% Done:

Source:

Tags:

Backport:

jewel,hammer

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

Create a clone from a parent image, create a snapshot on the clone, and write some data to the clone's HEAD revision. Attempting to export the clone's snapshot diff should return the parent history but instead excludes any parent extents where a backing object exists within the clone. Note: for >Infernalis, krbd is required to write to the clone since librbd will perform a CoW and the diff will include all parent extents.

Related issues 2 (0 open — 2 closed)