Bug 1990428

Summary:	Deleting the PVC and RBD provisioner leader pod while provisioning is progressing, will leave a stale image
Product:	OpenShift Container Platform	Reporter:	Mudit Agarwal <muagarwa>
Component:	Storage	Assignee:	Fabio Bertinatto <fbertina>
Storage sub component:	Storage	QA Contact:	Wei Duan <wduan>
Status:	CLOSED DEFERRED	Docs Contact:
Severity:	medium
Priority:	medium	CC:	aos-bugs, gcharot, jsafrane, mrajanna, muagarwa
Version:	4.6
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Last Closed:	2021-12-16 13:37:31 UTC	Type:	Bug
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Bug Blocks:	1962956

Description Mudit Agarwal 2021-08-05 11:41:22 UTC

Description of problem:

Deleting the PVC and RBD provisioner leader pod while provisioning is progressing, will leave a stale image. The issue can be seen frequently with thick provisioned volumes.

Version-Release number of selected component (if applicable):

How reproducible:
Always (with thick provisioning)

Steps to Reproduce:
1. Start creating a RBD PVC of size 15 GiB. Use thick provision enabled storage class.
2. When step 1 is progressing (PVC in Pending state), delete the csi-rbdplugin-provisioner leader pod.
3. Immediately after step 2 (PVC is still in Pending state), delete the PVC.
4. Wait for the PVC to get deleted.
5. Wait for the corresponding RBD image to get deleted.

Actual results:
PVC deleted. RBD image is not deleted.

Expected results:
The RBD image should be deleted.

Master Log:

Node Log (of failed PODs):

PV Dump:

PVC Dump:

StorageClass Dump (if StorageClass used by PV/PVC):

Additional info:

Comment 4 Jan Safranek 2021-08-10 14:25:14 UTC

This will need some discussion upstream, as it is hard problem to solve. We either need to sacrifice provisioning speed or leaked volumes.

Comment 5 Jan Safranek 2021-08-10 16:12:34 UTC

Upstream issue:
https://github.com/kubernetes-csi/external-provisioner/issues/486

Comment 7 Gregory Charot 2021-12-16 13:37:31 UTC

Closing deferred, this is no simple fix and requires design an proper integration. Tracking this work via this RFE https://issues.redhat.com/browse/RFE-2505