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[Claudiu Belu <cbelu@xxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

Resizing an instance which booted from a volume to a new flavor with a
bigger disk will not cause the volume to resize accordingly. This can
cause confusion among the users, which will expect to have instances
with bigger storage.

Scenario:
1. Have a glance image.
2. Create a bootable volume from glance image.
3. Create instance using volume and flavor having 10GB disk.
4. Perform nova resize on instance to a new flavor having 20GB disk.
5. After resize, see that the instance still has 10GB storage. Cinder volume still has the same size.

This issue has been discussed on #openstack-nova and it was agreed upon
to fail the resize operation, if the given instance is booted from
volume and the given new flavor has a different disk size.

** Affects: nova
     Importance: Undecided
     Assignee: Claudiu Belu (cbelu)
         Status: New


** Tags: volumes

** Changed in: nova
     Assignee: (unassigned) => Claudiu Belu (cbelu)

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https://bugs.launchpad.net/bugs/1412993

Title:
  Nova resize for boot-from-volume instance does not resize volume

Status in OpenStack Compute (Nova):
  New

Bug description:
  Resizing an instance which booted from a volume to a new flavor with a
  bigger disk will not cause the volume to resize accordingly. This can
  cause confusion among the users, which will expect to have instances
  with bigger storage.

  Scenario:
  1. Have a glance image.
  2. Create a bootable volume from glance image.
  3. Create instance using volume and flavor having 10GB disk.
  4. Perform nova resize on instance to a new flavor having 20GB disk.
  5. After resize, see that the instance still has 10GB storage. Cinder volume still has the same size.

  This issue has been discussed on #openstack-nova and it was agreed
  upon to fail the resize operation, if the given instance is booted
  from volume and the given new flavor has a different disk size.

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