yahoo-eng-team team mailing list archive

[John Wood <john.wood@xxxxxxxxxxxxx>]

Public bug reported:

To reproduce the issue, follow these steps:
1) Create s small instance
2) Resize to a larger instance
3) Create a snapshot image from the resized instance
4) Create an instance from this snapshot image, selecting the smallest flavor based on the snapshot image’s ‘min_disk’ value

The expected result is that in step #4 the image’s ‘min_disk’ value can
be used to select a minimum sized flavor for a new instance, leading to
a successful instance creation.

The actual result is that the minimum sized flavor suggested by
‘min_disk’ is too small for the snapshot image, so instance creation
fails with a 'VM too large for selected flavor' error here:
https://github.com/openstack/nova/blob/master/nova/virt/xenapi/vm_utils.py#L901

This error is seen in a deployment using Xen hypervisors with
Glance/Swift for image storage.

** Affects: nova
     Importance: Undecided
     Assignee: John Wood (john-wood-w)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => John Wood (john-wood-w)

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1565590

Title:
  Resized instance doesn't track new flavor, leading to possible
  instance-from-snapshot creation failures

Status in OpenStack Compute (nova):
  New

Bug description:
  To reproduce the issue, follow these steps:
  1) Create s small instance
  2) Resize to a larger instance
  3) Create a snapshot image from the resized instance
  4) Create an instance from this snapshot image, selecting the smallest flavor based on the snapshot image’s ‘min_disk’ value

  The expected result is that in step #4 the image’s ‘min_disk’ value
  can be used to select a minimum sized flavor for a new instance,
  leading to a successful instance creation.

  The actual result is that the minimum sized flavor suggested by
  ‘min_disk’ is too small for the snapshot image, so instance creation
  fails with a 'VM too large for selected flavor' error here:
  https://github.com/openstack/nova/blob/master/nova/virt/xenapi/vm_utils.py#L901

  This error is seen in a deployment using Xen hypervisors with
  Glance/Swift for image storage.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1565590/+subscriptions