b7953a787e
Automatic merge from submit-queue (batch tested with PRs 52452, 52115, 52260, 52290) fix azure disk mounter issue **What this PR does / why we need it**: fix azure disk mounter issue, it's a P1 bug, it exists in 1.7, 1.8 release, should cherry pick to 1.7, 1.8 **Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes # fixes #52261 consider following issue: 1) A pod mounting an azure disk in a k8s agent 2) The kubelet is restarted in that k8s agent 3) The pod could not start up, it always reports error as following: 4d 1m 3065 kubelet, 14777acs9000 Warning FailedMount MountVolume.SetUp failed for volume "pvc-7a0cdeb9-92c7-11e7-b86b-000d3a36d70c" : azureDisk - No t a mounting point for disk andykubewin175-dynamic-pvc-7a0cdeb9-92c7-11e7-b86b-000d3a36d70c on \var\lib\kubelet\pods\d146c023-92c7-11e7-b86b-000d3a36d70c\volumes\kubernetes.io~azure-disk\pvc-7a0cdeb9-92c7-11 e7-b86b-000d3a36d70c 4d 1m 3157 kubelet, 14777acs9000 Warning FailedMount Error syncing pod **Special notes for your reviewer**: If you take a look at following implementation of vsphere or gce, it will return nil instead of error: https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/vsphere_volume/vsphere_volume.go#L217-L220 https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/gce_pd/gce_pd.go#L273-L275 The logic of return info parsing here, it's wrong to return error https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/util/operationexecutor/operation_generator.go#L469-L475 **Release note**: ```release-note ```
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