def _test_finish_revert_migration_after_crash(self,
backup_made,
new_made,
vm_shutdown=True):
instance = {'name': 'foo', 'task_state': task_states.RESIZE_MIGRATING}
self.mox.StubOutWithMock(vm_utils, 'lookup')
self.mox.StubOutWithMock(self._vmops, '_destroy')
self.mox.StubOutWithMock(vm_utils, 'set_vm_name_label')
self.mox.StubOutWithMock(self._vmops, '_attach_mapped_block_devices')
self.mox.StubOutWithMock(self._vmops, '_start')
self.mox.StubOutWithMock(vm_utils, 'is_vm_shutdown')
vm_utils.lookup(self._session,
'foo-orig').AndReturn(backup_made and 'foo' or None)
vm_utils.lookup(self._session, 'foo').AndReturn(
(not backup_made or new_made) and 'foo' or None)
if backup_made:
if new_made:
self._vmops._destroy(instance, 'foo')
vm_utils.set_vm_name_label(self._session, 'foo', 'foo')
self._vmops._attach_mapped_block_devices(instance, [])
vm_utils.is_vm_shutdown(self._session, 'foo').AndReturn(vm_shutdown)
if vm_shutdown:
self._vmops._start(instance, 'foo')
self.mox.ReplayAll()
self._vmops.finish_revert_migration(instance, [])
def _test_finish_revert_migration_after_crash(self, backup_made, new_made, vm_shutdown=True):
instance = {"name": "foo", "task_state": task_states.RESIZE_MIGRATING}
self.mox.StubOutWithMock(vm_utils, "lookup")
self.mox.StubOutWithMock(self._vmops, "_destroy")
self.mox.StubOutWithMock(vm_utils, "set_vm_name_label")
self.mox.StubOutWithMock(self._vmops, "_attach_mapped_block_devices")
self.mox.StubOutWithMock(self._vmops, "_start")
self.mox.StubOutWithMock(vm_utils, "is_vm_shutdown")
vm_utils.lookup(self._session, "foo-orig").AndReturn(backup_made and "foo" or None)
vm_utils.lookup(self._session, "foo").AndReturn((not backup_made or new_made) and "foo" or None)
if backup_made:
if new_made:
self._vmops._destroy(instance, "foo")
vm_utils.set_vm_name_label(self._session, "foo", "foo")
self._vmops._attach_mapped_block_devices(instance, [])
vm_utils.is_vm_shutdown(self._session, "foo").AndReturn(vm_shutdown)
if vm_shutdown:
self._vmops._start(instance, "foo")
self.mox.ReplayAll()
self._vmops.finish_revert_migration(instance, [])
def _test_finish_revert_migration_after_crash(self, backup_made, new_made,
vm_shutdown=True):
instance = {'name': 'foo',
'task_state': task_states.RESIZE_MIGRATING}
context = 'fake_context'
self.mox.StubOutWithMock(vm_utils, 'lookup')
self.mox.StubOutWithMock(self._vmops, '_destroy')
self.mox.StubOutWithMock(vm_utils, 'set_vm_name_label')
self.mox.StubOutWithMock(self._vmops, '_attach_mapped_block_devices')
self.mox.StubOutWithMock(self._vmops, '_start')
self.mox.StubOutWithMock(vm_utils, 'is_vm_shutdown')
vm_utils.lookup(self._session, 'foo-orig').AndReturn(
backup_made and 'foo' or None)
vm_utils.lookup(self._session, 'foo').AndReturn(
(not backup_made or new_made) and 'foo' or None)
if backup_made:
if new_made:
self._vmops._destroy(instance, 'foo')
vm_utils.set_vm_name_label(self._session, 'foo', 'foo')
self._vmops._attach_mapped_block_devices(instance, [])
vm_utils.is_vm_shutdown(self._session, 'foo').AndReturn(vm_shutdown)
if vm_shutdown:
self._vmops._start(instance, 'foo')
self.mox.ReplayAll()
self._vmops.finish_revert_migration(context, instance, [])
def test_cleanshutdown_should_return_true_when_vm_is_shutdown(self):
self.mock = mox.Mox()
session = FakeSession()
instance = "instance"
vm_ref = "vm-ref"
self.mock.StubOutWithMock(vm_utils, 'is_vm_shutdown')
vm_utils.is_vm_shutdown(session, vm_ref).AndReturn(True)
self.mock.StubOutWithMock(vm_utils, 'LOG')
self.assertTrue(vm_utils.clean_shutdown_vm(session, instance, vm_ref))
def test_cleanshutdown_should_return_true_when_vm_is_shutdown(self):
self.mock = mox.Mox()
session = FakeSession()
instance = "instance"
vm_ref = "vm-ref"
self.mock.StubOutWithMock(vm_utils, "is_vm_shutdown")
vm_utils.is_vm_shutdown(session, vm_ref).AndReturn(True)
self.mock.StubOutWithMock(vm_utils, "LOG")
self.assertTrue(vm_utils.clean_shutdown_vm(session, instance, vm_ref))
def _attach_volume_to_vm(self, vdi_ref, vm_ref, instance_name, mountpoint,
hotplug):
LOG.debug('Attach_volume vdi: %(vdi_ref)s vm: %(vm_ref)s', {
'vdi_ref': vdi_ref,
'vm_ref': vm_ref
})
dev_number = volume_utils.get_device_number(mountpoint)
# osvol is added to the vbd so we can spot which vbds are volumes
vbd_ref = vm_utils.create_vbd(self._session,
vm_ref,
vdi_ref,
dev_number,
bootable=False,
osvol=True)
if hotplug:
# NOTE(johngarbutt) can only call VBD.plug on a running vm
running = not vm_utils.is_vm_shutdown(self._session, vm_ref)
if running:
LOG.debug("Plugging VBD: %s", vbd_ref)
self._session.VBD.plug(vbd_ref, vm_ref)
LOG.info(
_LI('Dev %(dev_number)s attached to'
' instance %(instance_name)s'), {
'instance_name': instance_name,
'dev_number': dev_number
})
def detach_volume(self, connection_info, instance_name, mountpoint):
"""Detach volume storage to VM instance."""
LOG.debug(_("Detach_volume: %(instance_name)s, %(mountpoint)s"), {
'instance_name': instance_name,
'mountpoint': mountpoint
})
device_number = volume_utils.get_device_number(mountpoint)
vm_ref = vm_utils.vm_ref_or_raise(self._session, instance_name)
try:
vbd_ref = vm_utils.find_vbd_by_number(self._session, vm_ref,
device_number)
except exception.StorageError:
# NOTE(sirp): If we don't find the VBD then it must have been
# detached previously.
LOG.warn(_('Skipping detach because VBD for %s was'
' not found'), instance_name)
return
# Unplug VBD if we're NOT shutdown
unplug = not vm_utils.is_vm_shutdown(self._session, vm_ref)
self._detach_vbd(vbd_ref, unplug, vm_ref)
LOG.info(
_('Mountpoint %(mountpoint)s detached from instance'
' %(instance_name)s'), {
'instance_name': instance_name,
'mountpoint': mountpoint
})
def _connect_volume(self,
connection_info,
dev_number=None,
instance_name=None,
vm_ref=None,
hotplug=True):
driver_type = connection_info['driver_volume_type']
if driver_type not in ['iscsi', 'xensm']:
raise exception.VolumeDriverNotFound(driver_type=driver_type)
connection_data = connection_info['data']
sr_uuid, sr_label, sr_params = volume_utils.parse_sr_info(
connection_data, 'Disk-for:%s' % instance_name)
# Introduce SR if not already present
sr_ref = volume_utils.find_sr_by_uuid(self._session, sr_uuid)
if not sr_ref:
sr_ref = volume_utils.introduce_sr(self._session, sr_uuid,
sr_label, sr_params)
try:
# Introduce VDI
if 'vdi_uuid' in connection_data:
vdi_ref = volume_utils.introduce_vdi(
self._session,
sr_ref,
vdi_uuid=connection_data['vdi_uuid'])
elif 'target_lun' in connection_data:
vdi_ref = volume_utils.introduce_vdi(
self._session,
sr_ref,
target_lun=connection_data['target_lun'])
else:
# NOTE(sirp): This will introduce the first VDI in the SR
vdi_ref = volume_utils.introduce_vdi(self._session, sr_ref)
# Attach
if vm_ref:
vbd_ref = vm_utils.create_vbd(self._session,
vm_ref,
vdi_ref,
dev_number,
bootable=False,
osvol=True)
running = not vm_utils.is_vm_shutdown(self._session, vm_ref)
if hotplug and running:
volume_utils.vbd_plug(self._session, vbd_ref, vm_ref)
vdi_uuid = self._session.call_xenapi("VDI.get_uuid", vdi_ref)
return (sr_uuid, vdi_uuid)
except Exception:
with excutils.save_and_reraise_exception():
# NOTE(sirp): Forgetting the SR will have the effect of
# cleaning up the VDI and VBD records, so no need to handle
# that explicitly.
volume_utils.forget_sr(self._session, sr_ref)
def detach_all(self, vm_ref):
"""Detach any external nova/cinder volumes and purge the SRs."""
# Generally speaking, detach_all will be called with VM already
# shutdown; however if it's still running, we can still perform the
# operation by unplugging the VBD first.
unplug = not vm_utils.is_vm_shutdown(self._session, vm_ref)
vbd_refs = self._get_all_volume_vbd_refs(vm_ref)
for vbd_ref in vbd_refs:
self._detach_vbd(vbd_ref, unplug, vm_ref)
def detach_all(self, vm_ref):
"""Detach any external nova/cinder volumes and purge the SRs."""
# Generally speaking, detach_all will be called with VM already
# shutdown; however if it's still running, we can still perform the
# operation by unplugging the VBD first.
unplug = not vm_utils.is_vm_shutdown(self._session, vm_ref)
vbd_refs = self._get_all_volume_vbd_refs(vm_ref)
for vbd_ref in vbd_refs:
self._detach_vbd(vbd_ref, unplug, vm_ref)
def _detach_vbds_and_srs(self, vm_ref, vbd_refs):
is_vm_shutdown = vm_utils.is_vm_shutdown(self._session, vm_ref)
for vbd_ref in vbd_refs:
# find sr before we destroy the vbd
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
if not is_vm_shutdown:
vm_utils.unplug_vbd(self._session, vbd_ref, vm_ref)
vm_utils.destroy_vbd(self._session, vbd_ref)
# Forget (i.e. disconnect) SR only if not in use
volume_utils.purge_sr(self._session, sr_ref)
def _detach_vbds_and_srs(self, vm_ref, vbd_refs):
is_vm_shutdown = vm_utils.is_vm_shutdown(self._session, vm_ref)
for vbd_ref in vbd_refs:
# find sr before we destroy the vbd
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
if not is_vm_shutdown:
vm_utils.unplug_vbd(self._session, vbd_ref, vm_ref)
vm_utils.destroy_vbd(self._session, vbd_ref)
# Forget (i.e. disconnect) SR only if not in use
volume_utils.purge_sr(self._session, sr_ref)
def _connect_volume(self, connection_info, dev_number=None,
instance_name=None, vm_ref=None, hotplug=True):
driver_type = connection_info['driver_volume_type']
if driver_type not in ['iscsi', 'xensm']:
raise exception.VolumeDriverNotFound(driver_type=driver_type)
connection_data = connection_info['data']
sr_uuid, sr_label, sr_params = volume_utils.parse_sr_info(
connection_data, 'Disk-for:%s' % instance_name)
# Introduce SR if not already present
sr_ref = volume_utils.find_sr_by_uuid(self._session, sr_uuid)
if not sr_ref:
sr_ref = volume_utils.introduce_sr(
self._session, sr_uuid, sr_label, sr_params)
try:
# Introduce VDI
if 'vdi_uuid' in connection_data:
vdi_ref = volume_utils.introduce_vdi(
self._session, sr_ref,
vdi_uuid=connection_data['vdi_uuid'])
elif 'target_lun' in connection_data:
vdi_ref = volume_utils.introduce_vdi(
self._session, sr_ref,
target_lun=connection_data['target_lun'])
else:
# NOTE(sirp): This will introduce the first VDI in the SR
vdi_ref = volume_utils.introduce_vdi(self._session, sr_ref)
# Attach
if vm_ref:
vbd_ref = vm_utils.create_vbd(self._session, vm_ref, vdi_ref,
dev_number, bootable=False,
osvol=True)
running = not vm_utils.is_vm_shutdown(self._session, vm_ref)
if hotplug and running:
self._session.VBD.plug(vbd_ref, vm_ref)
vdi_uuid = self._session.call_xenapi("VDI.get_uuid", vdi_ref)
return (sr_uuid, vdi_uuid)
except Exception:
with excutils.save_and_reraise_exception():
# NOTE(sirp): Forgetting the SR will have the effect of
# cleaning up the VDI and VBD records, so no need to handle
# that explicitly.
volume_utils.forget_sr(self._session, sr_ref)
def _attach_volume_to_vm(self, vdi_ref, vm_ref, instance_name, dev_number, hotplug):
msg = _("Attach_volume vdi: %(vdi_ref)s vm: %(vm_ref)s")
LOG.debug(msg, {"vdi_ref": vdi_ref, "vm_ref": vm_ref})
# osvol is added to the vbd so we can spot which vbds are volumes
vbd_ref = vm_utils.create_vbd(self._session, vm_ref, vdi_ref, dev_number, bootable=False, osvol=True)
if hotplug:
# NOTE(johngarbutt) can only call VBD.plug on a running vm
running = not vm_utils.is_vm_shutdown(self._session, vm_ref)
if running:
LOG.debug("Plugging VBD: %s", vbd_ref)
self._session.VBD.plug(vbd_ref, vm_ref)
LOG.info(
_("Dev %(dev_number)s attached to" " instance %(instance_name)s"),
{"instance_name": instance_name, "dev_number": dev_number},
)
def _attach_volume_to_vm(self, vdi_ref, vm_ref, instance_name, dev_number,
hotplug):
LOG.debug('Attach_volume vdi: %(vdi_ref)s vm: %(vm_ref)s',
{'vdi_ref': vdi_ref, 'vm_ref': vm_ref})
# osvol is added to the vbd so we can spot which vbds are volumes
vbd_ref = vm_utils.create_vbd(self._session, vm_ref, vdi_ref,
dev_number, bootable=False,
osvol=True)
if hotplug:
# NOTE(johngarbutt) can only call VBD.plug on a running vm
running = not vm_utils.is_vm_shutdown(self._session, vm_ref)
if running:
LOG.debug("Plugging VBD: %s", vbd_ref)
self._session.VBD.plug(vbd_ref, vm_ref)
LOG.info(_LI('Dev %(dev_number)s attached to'
' instance %(instance_name)s'),
{'instance_name': instance_name, 'dev_number': dev_number})
def detach_volume(self, connection_info, instance_name, mountpoint):
"""Detach volume storage to VM instance."""
LOG.debug(_("Detach_volume: %(instance_name)s, %(mountpoint)s"),
{'instance_name': instance_name, 'mountpoint': mountpoint})
device_number = volume_utils.get_device_number(mountpoint)
vm_ref = vm_utils.vm_ref_or_raise(self._session, instance_name)
try:
vbd_ref = vm_utils.find_vbd_by_number(
self._session, vm_ref, device_number)
except volume_utils.StorageError:
# NOTE(sirp): If we don't find the VBD then it must have been
# detached previously.
LOG.warn(_('Skipping detach because VBD for %s was'
' not found'), instance_name)
return
# Unplug VBD if we're NOT shutdown
unplug = not vm_utils.is_vm_shutdown(self._session, vm_ref)
self._detach_vbd(vbd_ref, unplug, vm_ref)
LOG.info(_('Mountpoint %(mountpoint)s detached from instance'
' %(instance_name)s'),
{'instance_name': instance_name, 'mountpoint': mountpoint})