CSI Resizer getting stuck

[davidumea]

Sometimes when attempting to resize volumes, the external-resizer gets stuck.

The issue occurs when you attempt to resize a volume that is attached to a server, and then detach the volume after the initial resize attempt. So when the volume is detached, the external-resizer doesn't get the updated information that the volume is no longer in-use.

Error syncing PVC: Unable to expand postgres-system/pgdata-postgresql-cluster-0 because CSI driver storage.csi.upcloud.com only supports offline expansion and volume is currently in-use

There is no leftover volumeattachment for the volume that is blocking the resize.

upcloud-csi version: v1.3.0
csi-resizer version: v1.4.0

Restarting the CSI controller pod seems to resolve this issue, but it's not a clean workaround.