online resizing?

[davidkarlsen]

Describe the problem/challenge you have

after editing pvc, I see

Conditions:
  Type                      Status  LastProbeTime                     LastTransitionTime                Reason  Message
  ----                      ------  -----------------                 ------------------                ------  -------
  FileSystemResizePending   True    Mon, 01 Jan 0001 00:00:00 +0000   Tue, 24 Aug 2021 10:39:44 +0200           Waiting for user to (re-)start a pod to finish file system resize of volume on node.
Events:
  Type     Reason                    Age   From                                   Message
  ----     ------                    ----  ----                                   -------
  Warning  ExternalExpanding         22s   volume_expand                          Ignoring the PVC: didn't find a plugin capable of expanding the volume; waiting for an external controller to process this PVC.
  Normal   Resizing                  22s   external-resizer local.csi.openebs.io  External resizer is resizing volume pvc-5e4376ec-44bb-4d1a-a734-60517dc8387f
  Normal   FileSystemResizeRequired  21s   external-resizer local.csi.openebs.io  Require file system resize of volume on node

which requires pod-restart

Describe the solution you'd like would it be possible to online-reszing? A vanilla xfs fileystem which is mounted on a VM can be resized while mounted.

Anything else you would like to add:

• RHEL
• xfs
• openshift

Environment:

• LVM Driver version
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):