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[Bug 1549194] [NEW] resize a instance, then revert the resize, excute cold migrate, error

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: "10821712@xxxxxx" <10821712@xxxxxx>
Date: Wed, 24 Feb 2016 09:31:35 -0000
Reply-to: Bug 1549194 <1549194@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

1.version: kilo&&liberty

 2.Relevant log files:

2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 3895, in _finish_resize
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     block_device_info, power_on)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 6848, in finish_migration
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     fallback_from_host=migration.source_compute)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2861, in _create_image
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     instance, size, fallback_from_host)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 6282, in _try_fetch_image_cache
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     size=size)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 240, in cache
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     *args, **kwargs)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 783, in create_image
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     self.verify_base_size(base, size)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 290, in verify_base_size
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     flavor_size=base_size, image_size=size)
2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher FlavorDiskSmallerThanImage: Flavor's disk is too small for requested image. Flavor disk is 21474836480 bytes, image is 1073741824 bytes

3.Reproduce steps:
  3.1 resize a instance,Let us assume that it is testVM
  3.2 rever the resize
  3.3 cold migrate testVM


Expected result: cold migrate sucess
Actual result: cold migrate failed

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1549194

Title:
  resize a instance,then revert the resize,excute cold migrate,error

Status in OpenStack Compute (nova):
  New

Bug description:
  1.version: kilo&&liberty

   2.Relevant log files:

  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 3895, in _finish_resize
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     block_device_info, power_on)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 6848, in finish_migration
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     fallback_from_host=migration.source_compute)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2861, in _create_image
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     instance, size, fallback_from_host)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 6282, in _try_fetch_image_cache
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     size=size)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 240, in cache
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     *args, **kwargs)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 783, in create_image
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     self.verify_base_size(base, size)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/imagebackend.py", line 290, in verify_base_size
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher     flavor_size=base_size, image_size=size)
  2016-02-24 16:45:20.549 1660 ERROR oslo_messaging.rpc.dispatcher FlavorDiskSmallerThanImage: Flavor's disk is too small for requested image. Flavor disk is 21474836480 bytes, image is 1073741824 bytes

  3.Reproduce steps:
    3.1 resize a instance,Let us assume that it is testVM
    3.2 rever the resize
    3.3 cold migrate testVM

  
  Expected result: cold migrate sucess
  Actual result: cold migrate failed

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