Debdiff for Jammy
** Also affects: cinder (Ubuntu)
Importance: Undecided
Status: New
** Also affects: cinder (Ubuntu Jammy)
Importance: Undecided
Status: New
** Description changed:
- With the RBD driver, in this scenario:
+ [Impact]
+ Deleting a volume will fail if it has snapshot or volume children, resulting
in an ImageBusy error.
- - Create volume A
- - Create snapshot B of volume A
- - Create cloned volume C from snapshot B
- - Delete snapshot B
- - Delete volume A
+ [Fix]
+ Upstream has a patch that uses RBD flatten operations to break dependencies
between volumes and snapshots, reducing failures when using RBD volume clones
and snapshots.
- Deleting volume A will fail with an ImageBusy error.
+ commit 1a675c9aa178c6d9c6ed10fd98f086c46d350d3f
+ Author: Eric Harney <ehar...@redhat.com>
+ CommitDate: Fri Dec 1 10:17:05 2023 -0500
+
+ RBD: Flattening of child volumes during deletion
+
+ [Test Plan]
+ 1. Prepare an OpenStack environment with cinder-ceph
+ 2. Create a volume named "vol"
+ openstack volume create --image jammy --size 10 vol
+ 3. Create a snapshot of the volume "vol"
+ openstack volume snapshot create --volume vol vol-snap
+ 4. Create a volume named "vol-copy" from the snapshot
+ openstack volume create --snapshot vol-snap vol-copy
+ 5. Delete the snapshot and then delete the volume "vol"
+ openstack volume snapshot delete vol-snap
+ openstack volume delete vol
+ 6. Confirm that the volume "vol" is successfully deleted
+ openstack volume list
+
+ [Where problems could occur]
+ The patch primarily modifies the workflow for volume deletion when using RBD
as the backend and adds a retry mechanism for unprotecting snapshots during
snapshot deletion.
+ If the patch has any undiscovered issues, it will only affect volume
deletion. Other functionalities or non-RBD backends will not be impacted.
** Patch added: "lp1969643-cinder-jammy.debdiff"
https://bugs.launchpad.net/ubuntu/+source/cinder/+bug/1969643/+attachment/5784118/+files/lp1969643-cinder-jammy.debdiff
** Changed in: cinder (Ubuntu Jammy)
Status: New => In Progress
** Changed in: cinder (Ubuntu Jammy)
Assignee: (unassigned) => Chengen Du (chengendu)
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1969643
Title:
RBD: Unable to delete a volume which has snapshot/volume children
To manage notifications about this bug go to:
https://bugs.launchpad.net/cinder/+bug/1969643/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
