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[Roman Podoliaka <rpodolyaka+bugs@xxxxxxxxxxxx>]

Public bug reported:

It's currently possible to boot an instance from a QCOW2 image, which
has the virtual size larger than root_gb size specified in the given
flavor.

Steps to reproduce:

1. Download a QCOW2 image (e.g. Cirros -
https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-i386-disk.img)

2. Resize the image to a reasonable size:

qemu-img resize cirros-0.3.0-i386-disk.img +9G

3. Upload the image to Glance:

glance image-create --file cirros-0.3.0-i386-disk.img --name cirros-10GB
--is-public True --progress --container-format bare --disk-format qcow2

4. Boot the first VM using a 'correct' flavor (root_gb > virtual size of
the Cirros image), e.g. m1.small (root_gb = 20)

nova boot --image cirros-10GB --flavor m1.small demo-ok

5. Wait until the VM boots.

6. Boot the second VM using an 'incorrect' flavor (root_gb < virtual
size of the Cirros image), e.g. m1.tiny (root_gb = 1):

nova boot --image cirros-10GB --flavor m1.tiny demo-should-fail

7. Wait until the VM boots.

Expected result:

demo-ok is in ACTIVE state
demo-should-fail is in ERROR state (failed with FlavorDiskTooSmall)

Actual result:

demo-ok is in ACTIVE state
demo-should-fail is in ACTIVE state

** Affects: nova
     Importance: Undecided
     Assignee: Roman Podoliaka (rpodolyaka)
         Status: In Progress

** Changed in: nova
     Assignee: (unassigned) => Roman Podoliaka (rpodolyaka)

** Changed in: nova
       Status: New => In Progress

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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1429093

Title:
  nova allows to boot images with virtual size > root_gb specified in
  flavor

Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  It's currently possible to boot an instance from a QCOW2 image, which
  has the virtual size larger than root_gb size specified in the given
  flavor.

  Steps to reproduce:

  1. Download a QCOW2 image (e.g. Cirros -
  https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-i386-disk.img)

  2. Resize the image to a reasonable size:

  qemu-img resize cirros-0.3.0-i386-disk.img +9G

  3. Upload the image to Glance:

  glance image-create --file cirros-0.3.0-i386-disk.img --name cirros-
  10GB --is-public True --progress --container-format bare --disk-format
  qcow2

  4. Boot the first VM using a 'correct' flavor (root_gb > virtual size
  of the Cirros image), e.g. m1.small (root_gb = 20)

  nova boot --image cirros-10GB --flavor m1.small demo-ok

  5. Wait until the VM boots.

  6. Boot the second VM using an 'incorrect' flavor (root_gb < virtual
  size of the Cirros image), e.g. m1.tiny (root_gb = 1):

  nova boot --image cirros-10GB --flavor m1.tiny demo-should-fail

  7. Wait until the VM boots.

  Expected result:

  demo-ok is in ACTIVE state
  demo-should-fail is in ERROR state (failed with FlavorDiskTooSmall)

  Actual result:

  demo-ok is in ACTIVE state
  demo-should-fail is in ACTIVE state

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