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[Chris Friesen <chris.friesen@xxxxxxxxxxxxx>]

Public bug reported:


There seems to be an issue (discovered in Pike) where ceph-backed swap does not return to the original size if a resize operation is reverted.

Steps to reproduce:
1) Configure compute nodes to use remote ceph-backed storage for instances.
2) Launch a vm with with ephemeral and swap disk.  (The swap disk will be RBD-backed.)
3) Resize vm to a new flavor with larger swap disk size.  The swap disk will be resized to the larger size.
4) Resize-revert to original flavor.
5) Check actual disk sizes from within the VM and from ceph directly.

Expected behaviour:
VM swap disk size should be reverted back to original size.

Actual behaviour:
VM swap disk remains at the larger size.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: ceph compute resize

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https://bugs.launchpad.net/bugs/1781643

Title:
  With remote storage, swap disk size changed after resize-revert

Status in OpenStack Compute (nova):
  New

Bug description:
  
  There seems to be an issue (discovered in Pike) where ceph-backed swap does not return to the original size if a resize operation is reverted.

  Steps to reproduce:
  1) Configure compute nodes to use remote ceph-backed storage for instances.
  2) Launch a vm with with ephemeral and swap disk.  (The swap disk will be RBD-backed.)
  3) Resize vm to a new flavor with larger swap disk size.  The swap disk will be resized to the larger size.
  4) Resize-revert to original flavor.
  5) Check actual disk sizes from within the VM and from ceph directly.

  Expected behaviour:
  VM swap disk size should be reverted back to original size.

  Actual behaviour:
  VM swap disk remains at the larger size.

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