Possible issue with multiple calls of detaching disk or detaching already detached disk

[chrisvdg]

This is possibly happening when deleting a pvc that has not been published onto a node, causing the delete of it triggering a detach which OVC will respond with an error as it is already detached (an incorrect state for this action).

If this is the case, a check is needed to see if the volume is already detached and not raise an error.

Logs from the csi-plugin container of the provisioner pod.

I1108 14:22:09.309888       1 controller.go:1040] provision "default/konijnen-kopen-dot-be-wordpress" class "gig.tech-ovc-k8s-storage-provider": trying to save persistentvolume "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b"
I1108 14:22:09.313585       1 controller.go:1047] provision "default/konijnen-kopen-dot-be-wordpress" class "gig.tech-ovc-k8s-storage-provider": persistentvolume "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b" saved
I1108 14:22:09.314163       1 controller.go:1088] provision "default/konijnen-kopen-dot-be-wordpress" class "gig.tech-ovc-k8s-storage-provider": succeeded
I1108 14:22:09.314461       1 event.go:221] Event(v1.ObjectReference{Kind:"PersistentVolumeClaim", Namespace:"default", Name:"konijnen-kopen-dot-be-wordpress", UID:"65a530db-d6a8-44a6-a9f8-27c12384733b", APIVersion:"v1", ResourceVersion:"153409", FieldPath:""}): type: 'Normal' reason: 'ProvisioningSucceeded' Successfully provisioned volume pvc-65a530db-d6a8-44a6-a9f8-27c12384733b
I1108 14:25:02.221876       1 controller.go:1097] delete "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b": started
E1108 14:25:10.341677       1 controller.go:1120] delete "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b": volume deletion failed: rpc error: code = Internal desc = "Can only detach disks from machines in states RUNNING, PAUSED, HALTED: state of 7039 is DETACHING_DISK"
W1108 14:25:10.341776       1 controller.go:726] Retrying syncing volume "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b" because failures 0 < threshold 15
E1108 14:25:10.341821       1 controller.go:741] error syncing volume "pvc-65a530db-d6a8-44a6-a9f8-27c12384733b": rpc error: code = Internal desc = "Can only detach disks from machines in states RUNNING, PAUSED, HALTED: state of 7039 is DETACHING_DISK"
I1108 14:25:10.341959       1 event.go:221] Event(v1.ObjectReference{Kind:"PersistentVolume", Namespace:"", Name:"pvc-65a530db-d6a8-44a6-a9f8-27c12384733b", UID:"a6c0bfa9-9968-40e6-bf00-86d6b5631ea7", APIVersion:"v1", ResourceVersion:"153914", FieldPath:""}): type: 'Warning' reason: 'VolumeFailedDelete' rpc error: code = Internal desc = "Can only detach disks from machines in states RUNNING, PAUSED, HALTED: state of 7039 is DETACHING_DISK"