def create_volume_from_snapshot(self, volume, snapshot):
"""Create a volume from a snapshot.
We use LUNcopy to copy a new volume from snapshot.
The time needed increases as volume size does.
"""
snapshotname = huawei_utils.encode_name(snapshot['id'])
snapshot_id = snapshot.get('provider_location', None)
if snapshot_id is None:
snapshot_id = self.restclient.get_snapshotid_by_name(snapshotname)
if snapshot_id is None:
err_msg = (_(
'create_volume_from_snapshot: Snapshot %(name)s '
'does not exist.')
% {'name': snapshotname})
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
lun_info = self.create_volume(volume)
tgt_lun_id = lun_info['ID']
luncopy_name = huawei_utils.encode_name(volume['id'])
LOG.info(_LI(
'create_volume_from_snapshot: src_lun_id: %(src_lun_id)s, '
'tgt_lun_id: %(tgt_lun_id)s, copy_name: %(copy_name)s.'),
{'src_lun_id': snapshot_id,
'tgt_lun_id': tgt_lun_id,
'copy_name': luncopy_name})
event_type = 'LUNReadyWaitInterval'
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path,
event_type)
def _volume_ready():
result = self.restclient.get_lun_info(tgt_lun_id)
if (result['HEALTHSTATUS'] == constants.STATUS_HEALTH
and result['RUNNINGSTATUS'] == constants.STATUS_VOLUME_READY):
return True
return False
huawei_utils.wait_for_condition(self.xml_file_path,
_volume_ready,
wait_interval,
wait_interval * 10)
self._copy_volume(volume, luncopy_name,
snapshot_id, tgt_lun_id)
return {'ID': lun_info['ID'],
'lun_info': lun_info}
def _wait_volume_ready(self, lun_id):
event_type = 'LUNReadyWaitInterval'
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path,
event_type)
def _volume_ready():
result = self.restclient.get_lun_info(lun_id)
if (result['HEALTHSTATUS'] == constants.STATUS_HEALTH and
result['RUNNINGSTATUS'] == constants.STATUS_VOLUME_READY):
return True
return False
huawei_utils.wait_for_condition(self.xml_file_path, _volume_ready,
wait_interval, wait_interval * 10)
def _wait_volume_ready(self, lun_id):
event_type = "LUNReadyWaitInterval"
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path, event_type)
def _volume_ready():
result = self.rmt_client.get_lun_info(lun_id)
if (
result["HEALTHSTATUS"] == constants.STATUS_HEALTH
and result["RUNNINGSTATUS"] == constants.STATUS_VOLUME_READY
):
return True
return False
huawei_utils.wait_for_condition(self.xml_file_path, _volume_ready, wait_interval, wait_interval * 10)
def create_volume_from_snapshot(self, volume, snapshot):
"""Create a volume from a snapshot.
We use LUNcopy to copy a new volume from snapshot.
The time needed increases as volume size does.
"""
snapshotname = huawei_utils.encode_name(snapshot["id"])
snapshot_id = snapshot.get("provider_location", None)
if snapshot_id is None:
snapshot_id = self.restclient.get_snapshotid_by_name(snapshotname)
if snapshot_id is None:
err_msg = _("create_volume_from_snapshot: Snapshot %(name)s " "does not exist.") % {
"name": snapshotname
}
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
lun_info = self.create_volume(volume)
tgt_lun_id = lun_info["ID"]
luncopy_name = huawei_utils.encode_name(volume["id"])
LOG.info(
_LI(
"create_volume_from_snapshot: src_lun_id: %(src_lun_id)s, "
"tgt_lun_id: %(tgt_lun_id)s, copy_name: %(copy_name)s."
),
{"src_lun_id": snapshot_id, "tgt_lun_id": tgt_lun_id, "copy_name": luncopy_name},
)
event_type = "LUNReadyWaitInterval"
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path, event_type)
def _volume_ready():
result = self.restclient.get_lun_info(tgt_lun_id)
if (
result["HEALTHSTATUS"] == constants.STATUS_HEALTH
and result["RUNNINGSTATUS"] == constants.STATUS_VOLUME_READY
):
return True
return False
huawei_utils.wait_for_condition(self.xml_file_path, _volume_ready, wait_interval, wait_interval * 10)
self._copy_volume(volume, luncopy_name, snapshot_id, tgt_lun_id)
return {"ID": lun_info["ID"], "lun_info": lun_info}
def _copy_volume(self, volume, copy_name, src_lun, tgt_lun):
luncopy_id = self.restclient.create_luncopy(copy_name, src_lun, tgt_lun)
event_type = "LUNcopyWaitInterval"
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path, event_type)
try:
self.restclient.start_luncopy(luncopy_id)
def _luncopy_complete():
luncopy_info = self.restclient.get_luncopy_info(luncopy_id)
if luncopy_info["status"] == constants.STATUS_LUNCOPY_READY:
# luncopy_info['status'] means for the running status of
# the luncopy. If luncopy_info['status'] is equal to '40',
# this luncopy is completely ready.
return True
elif luncopy_info["state"] != constants.STATUS_HEALTH:
# luncopy_info['state'] means for the healthy status of the
# luncopy. If luncopy_info['state'] is not equal to '1',
# this means that an error occurred during the LUNcopy
# operation and we should abort it.
err_msg = (
_(
"An error occurred during the LUNcopy operation. "
"LUNcopy name: %(luncopyname)s. "
"LUNcopy status: %(luncopystatus)s. "
"LUNcopy state: %(luncopystate)s."
)
% {
"luncopyname": luncopy_id,
"luncopystatus": luncopy_info["status"],
"luncopystate": luncopy_info["state"],
},
)
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
huawei_utils.wait_for_condition(self.xml_file_path, _luncopy_complete, wait_interval)
except Exception:
with excutils.save_and_reraise_exception():
self.restclient.delete_luncopy(luncopy_id)
self.delete_volume(volume)
self.restclient.delete_luncopy(luncopy_id)
def _copy_volume(self, volume, copy_name, src_lun, tgt_lun):
luncopy_id = self.restclient.create_luncopy(copy_name, src_lun,
tgt_lun)
event_type = 'LUNcopyWaitInterval'
wait_interval = huawei_utils.get_wait_interval(self.xml_file_path,
event_type)
try:
self.restclient.start_luncopy(luncopy_id)
def _luncopy_complete():
luncopy_info = self.restclient.get_luncopy_info(luncopy_id)
if luncopy_info['status'] == constants.STATUS_LUNCOPY_READY:
# luncopy_info['status'] means for the running status of
# the luncopy. If luncopy_info['status'] is equal to '40',
# this luncopy is completely ready.
return True
elif luncopy_info['state'] != constants.STATUS_HEALTH:
# luncopy_info['state'] means for the healthy status of the
# luncopy. If luncopy_info['state'] is not equal to '1',
# this means that an error occurred during the LUNcopy
# operation and we should abort it.
err_msg = (
_('An error occurred during the LUNcopy operation. '
'LUNcopy name: %(luncopyname)s. '
'LUNcopy status: %(luncopystatus)s. '
'LUNcopy state: %(luncopystate)s.') % {
'luncopyname': luncopy_id,
'luncopystatus': luncopy_info['status'],
'luncopystate': luncopy_info['state']
}, )
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
huawei_utils.wait_for_condition(self.xml_file_path,
_luncopy_complete, wait_interval)
except Exception:
with excutils.save_and_reraise_exception():
self.restclient.delete_luncopy(luncopy_id)
self.delete_volume(volume)
self.restclient.delete_luncopy(luncopy_id)
def test_get_wait_interval(self):
result = huawei_utils.get_wait_interval(self.xml_file_path,
'LUNReadyWaitInterval')
self.assertEqual(2, result)
def test_get_wait_interval(self):
result = huawei_utils.get_wait_interval(self.xml_file_path,
'LUNReadyWaitInterval')
self.assertEqual(2, result)
