Public bug reported:
when using ceph as backend, instance can resize to a smaller flavor, and
vm_state become error in the end.
nova/virt/libvirt/driver.py:
@staticmethod
def _is_booted_from_volume(instance, disk_mapping):
"""Determines whether the VM is booting from volume
Determines whether the disk mapping indicates that the VM
is booting from a volume.
"""
return ((not bool(instance.get('image_ref')))
or 'disk' not in disk_mapping)
when using rbd as backend, the function cannot find 'disk' in
disk_mapping, and treat it as booted_from_volume
** Affects: nova
Importance: Undecided
Assignee: Yang Shengming (yang-shengming)
Status: New
** Changed in: nova
Assignee: (unassigned) => Yang Shengming (yang-shengming)
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https://bugs.launchpad.net/bugs/1587802
Title:
libvirt resize down prevention is invalid when using rbd as backend
Status in OpenStack Compute (nova):
New
Bug description:
when using ceph as backend, instance can resize to a smaller flavor,
and vm_state become error in the end.
nova/virt/libvirt/driver.py:
@staticmethod
def _is_booted_from_volume(instance, disk_mapping):
"""Determines whether the VM is booting from volume
Determines whether the disk mapping indicates that the VM
is booting from a volume.
"""
return ((not bool(instance.get('image_ref')))
or 'disk' not in disk_mapping)
when using rbd as backend, the function cannot find 'disk' in
disk_mapping, and treat it as booted_from_volume
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