def _detach_vbd(self, vbd_ref, unplug=False):
if unplug:
vm_utils.unplug_vbd(self._session, vbd_ref)
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
vm_utils.destroy_vbd(self._session, vbd_ref)
# Forget SR only if not in use
volume_utils.purge_sr(self._session, sr_ref)
def _detach_vbd(self, vbd_ref, unplug=False):
if unplug:
vm_utils.unplug_vbd(self._session, vbd_ref)
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
vm_utils.destroy_vbd(self._session, vbd_ref)
# Forget 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 test_purge_sr_no_VBDs(self, mock_forget):
def _call_xenapi(func, *args):
if func == 'SR.get_VDIs':
return ['VDI1', 'VDI2']
if func == 'VDI.get_VBDs':
return []
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, 'SR')
mock_forget.assert_called_once_with(self.session, 'SR')
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 test_purge_sr_no_VBDs(self, mock_forget):
def _call_xenapi(func, *args):
if func == "SR.get_VDIs":
return ["VDI1", "VDI2"]
if func == "VDI.get_VBDs":
return []
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, "SR")
mock_forget.assert_called_once_with(self.session, "SR")
def test_purge_sr_no_VBDs(self, mock_forget):
def _call_xenapi(func, *args):
if func == 'SR.get_VDIs':
return ['VDI1', 'VDI2']
if func == 'VDI.get_VBDs':
return []
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, 'SR')
mock_forget.assert_called_once_with(self.session, 'SR')
def safe_cleanup_from_vdis(self, vdi_refs):
# A helper method to detach volumes that are not associated with an
# instance
for vdi_ref in vdi_refs:
try:
sr_ref = volume_utils.find_sr_from_vdi(self._session, vdi_ref)
except exception.StorageError as exc:
LOG.debug(exc.format_message())
continue
try:
# Forget (i.e. disconnect) SR only if not in use
volume_utils.purge_sr(self._session, sr_ref)
except Exception:
LOG.debug("Ignoring error while purging sr: %s" % sr_ref, exc_info=True)
def safe_cleanup_from_vdis(self, vdi_refs):
# A helper method to detach volumes that are not associated with an
# instance
for vdi_ref in vdi_refs:
try:
sr_ref = volume_utils.find_sr_from_vdi(self._session, vdi_ref)
except exception.StorageError as exc:
LOG.debug(exc.format_message())
continue
try:
# Forget (i.e. disconnect) SR only if not in use
volume_utils.purge_sr(self._session, sr_ref)
except Exception:
LOG.debug('Ignoring error while purging sr: %s' % sr_ref,
exc_info=True)
def test_purge_sr_in_use(self, mock_forget):
def _call_xenapi(func, *args):
if func == 'SR.get_VDIs':
return ['VDI1', 'VDI2']
if func == 'VDI.get_VBDs':
if args[0] == 'VDI1':
return ['VBD1']
if args[0] == 'VDI2':
return ['VBD2']
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, 'SR')
self.assertEqual([], mock_forget.mock_calls)
def test_purge_sr_in_use(self, mock_forget):
def _call_xenapi(func, *args):
if func == "SR.get_VDIs":
return ["VDI1", "VDI2"]
if func == "VDI.get_VBDs":
if args[0] == "VDI1":
return ["VBD1"]
if args[0] == "VDI2":
return ["VBD2"]
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, "SR")
self.assertEqual([], mock_forget.mock_calls)
def test_purge_sr_in_use(self, mock_forget):
def _call_xenapi(func, *args):
if func == 'SR.get_VDIs':
return ['VDI1', 'VDI2']
if func == 'VDI.get_VBDs':
if args[0] == 'VDI1':
return ['VBD1']
if args[0] == 'VDI2':
return ['VBD2']
self.session = mock.Mock()
self.session.call_xenapi = _call_xenapi
volume_utils.purge_sr(self.session, 'SR')
self.assertEqual([], mock_forget.mock_calls)
vbd_ref = vm_utils.find_vbd_by_number(self._session, vm_ref,
device_number)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to locate volume %s') % mountpoint)
try:
vm_rec = self._session.call_xenapi("VM.get_record", vm_ref)
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
if vm_rec['power_state'] != 'Halted':
vm_utils.unplug_vbd(self._session, vbd_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to detach volume %s') % mountpoint)
try:
vm_utils.destroy_vbd(self._session, vbd_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to destroy vbd %s') % mountpoint)
# Forget SR only if no other volumes on this host are using it
try:
volume_utils.purge_sr(self._session, sr_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Error purging SR %s') % sr_ref)
LOG.info(
_('Mountpoint %(mountpoint)s detached from'
' instance %(instance_name)s') % locals())
% locals())
device_number = volume_utils.mountpoint_to_number(mountpoint)
try:
vbd_ref = vm_utils.find_vbd_by_number(self._session, vm_ref,
device_number)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to locate volume %s') % mountpoint)
try:
sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
vm_utils.unplug_vbd(self._session, vbd_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to detach volume %s') % mountpoint)
try:
vm_utils.destroy_vbd(self._session, vbd_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Unable to destroy vbd %s') % mountpoint)
# Forget SR only if no other volumes on this host are using it
try:
volume_utils.purge_sr(self._session, sr_ref)
except volume_utils.StorageError, exc:
LOG.exception(exc)
raise Exception(_('Error purging SR %s') % sr_ref)
LOG.info(_('Mountpoint %(mountpoint)s detached from'
' instance %(instance_name)s') % locals())
