[WIP] Graduate ExpandInUsePersistentVolumes feature to beta

[wongma7]

docs for online/in-use resize kubernetes/enhancements#531

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[zparnold]

@wongma7 Could I please have you take a look at this again for documentation please?

[justaugustus]

Removing this from the milestone per this comment: kubernetes/enhancements#531 (comment)

/milestone clear

[zparnold]

/close

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@zparnold: Closing this PR.

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[Wade201801]

Hi,

I am trying PVC online resizing based on storage cinder on kubernetes1.11.2, but failed.
The log indicates "Warning VolumeResizeFailed 1m (x25 over 1h) volume_expand Error expanding volume "default/myclaim-expend" of plugin kubernetes.io/cinder : volume status is not available".

The function ExpandVolume in file kubernetes / pkg / cloudprovider / providers / openstack / openstack_volumes.go reported above error, actually is line 410~413.
405 func (os *OpenStack) ExpandVolume(volumeID string, oldSize resource.Quantity, newSize resource.Quantity) (resource.Quantity, error) {
406 volume, err := os.getVolume(volumeID)
407 if err != nil {
408 return oldSize, err
409 }
410 if volume.Status != volumeAvailableStatus {
411 // cinder volume can not be expanded if its status is not available
412 return oldSize, fmt.Errorf("volume status is not available")
413 }
414

My confusion is: once running pods bind pvc, the cinder volume's status is in-use, how can online resizing pass the line410 check?

Best wishes,
Wade Li

[shubheksha]

@Wade201801, you can also try asking in one of the support channels listed. :)

[Wade201801]

@Wade201801, you can also try asking in one of the support channels listed. :)

Thanks for your reminder.