Here is the link to the upstream bug related to the configuration option:
https://bugs.launchpad.net/cinder/+bug/2076891
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https://bugs.launchpad.net/bugs/1969643
Title:
RBD: Unable to d
Hi @hopem,
Thanks for your suggestion on this issue. For the proposed upstream
patch that adds a configuration to enable RBD flatten operations during
delete_volume/delete_snapshot calls, we've currently set the default to
false. However, it may be challenging to get upstream approval,
especially
Hi Chengen,
Additionally, and back to the testing comments (sorry for the delay),
your test plan looks good, thanks! I just updated step 6 to reflect
it should fail (depending on scenario 1 or 2 / config option value).
Thanks!
** Description changed:
[Impact]
Deleting a volume will fail if
Moving bug task of Ubuntu Jammy to Incomplete per comment #17.
BTW, since this bug number has already been used upstream for
the original changes, which don't include these new changes
for the config option, the latter should use another bug number,
if that is needed for an upstream submission.
Hi @chengendu,
In order to continue with this backport there are a couple of things
that we need from you.
Firstly the patch needs to be backported in upstream Openstack.
Currently the patch has been backported upstream to stable/2014.1 (i.e.
Caracal which is the release avaiable in Ubuntu Noble)
@mfo I apologize for the haste earlier and have now modified the test
plan.
** Description changed:
[Impact]
Deleting a volume will fail if it has snapshot or volume children, resulting
in an ImageBusy error.
[Fix]
Upstream has a patch that uses RBD flatten operations to break depende
Hi Chengen,
Thanks for implementing this!
Could you please confirm/describe the testing
performed with this additional patch/option?
** Changed in: cinder (Ubuntu Jammy)
Status: In Progress => Incomplete
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@mfo I have introduced a configuration option,
'enable_flatten_children_deletion', to enable RBD flatten operations
during delete_volume/delete_snapshot calls (default is False). Please
take a look and proceed with the SRU process. Thanks for your continued
support.
** Patch added: "lp1969643-cind
Hi Ed and Chengen,
Ed, thanks for your review and feedback.
> I think that to make this patch really same some guardrails should be
put in place.
> it might have been safer to make this an optional feature, defaulting
to disabled
This also aligns with Dan's feedback (internal):
> there are sig
Thanks @mfo i think your two concerns are valid. This patch does create
the risk that a user, in deleting a single volume, could overwhelm the
Ceph cluster. It is not uncommon for production Ceph clusters to be
reasonably full and with this patch if you happen to delete a large
volume that has a la
Chengen,
Now the changes review notes:
This patch is concerning for a couple of reasons, if I understand correctly:
1) behavior changes that are potentially impactful to the storage backend;
2) new requirements for the deployment configuration that might seriously
impact the deployment.
In or
Hi Chengen,
Thanks for your work on this bug / fix / SRU template!
Some process review notes:
In the future, please update the bug tasks for the newer/devel releases
as well.
In this case, Mantic not marked as Won't Fix possibly would require you
an extra round-trip during the review with the S
** Also affects: cinder (Ubuntu Mantic)
Importance: Undecided
Status: New
** Also affects: cinder (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: cinder (Ubuntu Oracular)
Importance: Undecided
Status: New
** Changed in: cinder (Ubuntu Mantic)
** Description changed:
[Impact]
Deleting a volume will fail if it has snapshot or volume children, resulting
in an ImageBusy error.
[Fix]
Upstream has a patch that uses RBD flatten operations to break dependencies
between volumes and snapshots, reducing failures when using RBD volume
** Description changed:
[Impact]
Deleting a volume will fail if it has snapshot or volume children, resulting
in an ImageBusy error.
[Fix]
Upstream has a patch that uses RBD flatten operations to break dependencies
between volumes and snapshots, reducing failures when using RBD volume
The attachment "lp1969643-cinder-jammy.debdiff" seems to be a debdiff.
The ubuntu-sponsors team has been subscribed to the bug report so that
they can review and hopefully sponsor the debdiff. If the attachment
isn't a patch, please remove the "patch" flag from the attachment,
remove the "patch" t
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 s
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