def _trigger_mds_issue(cls, vpool, volume_bundle, target_storagerouter_guid, logger=LOGGER):
"""
voldrv A, voldrv B, volume X op A
ensure_safety lopen op X, die gaat master op A en slave op B hebben -> done on create
dan ga je manueel tegen de voldrv zeggen dat X enkel nog A heeft als MDS
B blijft dan slave, en blijft catchuppe
dan scrub je X, en die raken niet applied op B
want 'm kent die eigenlijk niet
en dan - da's hier enigzinds nen educated guess - configureer je B manueel terug als slave
doe je nen move of nen failover beter gezegd (zie hierboven hoe te doen)
dan gaat 'm opeens B als master gebruiken maar die heeft geen scrub results applied
"""
logger.debug('Starting the mds triggering.')
cls._set_mds_safety(vpool, 2, checkup=True) # Will trigger mds checkup which should create a slave again
# Move the volume to set the slave as the master
for vdisk_name, vdisk_object in volume_bundle.iteritems():
VDiskSetup.move_vdisk(vdisk_guid=vdisk_object.guid, target_storagerouter_guid=target_storagerouter_guid)
def _execute_test(cls, amount_vdisks=AMOUNT_VDISKS):
"""
Executes a offline migration
:param amount_vdisks: amount of vdisks to test
:type amount_vdisks: int
:return:
"""
cls.LOGGER.info("Starting offline migrate test.")
vpool = None # Get a suitable vpool
for vp in VPoolHelper.get_vpools():
if len(vp.storagedrivers) >= 2:
vpool = vp
break
assert vpool is not None, "Not enough vPools to test. Requires 1 with at least 2 storagedrivers and found 0."
##########################
# Setup base information #
##########################
# Executor storagedriver_1 is current system
std_1 = random.choice([st for st in vpool.storagedrivers])
# Get a random other storagedriver to migrate to
std_2 = random.choice([st for st in vpool.storagedrivers if st != std_1])
# Cache to validate properties
values_to_check = {
'source_std': std_1.serialize(),
'target_std': std_2.serialize()
}
###############################
# start deploying & migrating #
###############################
created_vdisks = []
try:
for i in xrange(amount_vdisks):
################
# create vdisk #
################
vdisk_name = "{0}_{1}".format(cls.TEST_NAME, i)
try:
vdisk_guid = VDiskSetup.create_vdisk(vdisk_name=vdisk_name + '.raw',
vpool_name=vpool.name,
size=cls.AMOUNT_TO_WRITE * 5,
storagerouter_ip=std_1.storagerouter.ip)
vdisk = VDiskHelper.get_vdisk_by_guid(vdisk_guid) # Fetch to validate if it was properly created
created_vdisks.append(vdisk)
values_to_check['vdisk'] = vdisk.serialize()
except TimeOutError:
cls.LOGGER.error("Creation of the vdisk has timed out.")
raise
except (RuntimeError, TimeOutError) as ex:
cls.LOGGER.info("Creation of vdisk failed: {0}".format(ex))
raise
else:
time.sleep(cls.SLEEP_TIME)
try:
cls.LOGGER.info("Moving vdisk {0} from {1} to {2}".format(vdisk_guid, std_1.storage_ip, std_2.storage_ip))
VDiskSetup.move_vdisk(vdisk_guid=vdisk_guid, target_storagerouter_guid=std_2.storagerouter_guid)
time.sleep(cls.SLEEP_TIME)
cls.LOGGER.info("Validating move...")
cls._validate_move(values_to_check)
except Exception as ex:
cls.LOGGER.exception('Failed during migation: {0}'.format(ex))
raise
finally:
for vdisk in created_vdisks:
VDiskRemover.remove_vdisk(vdisk.guid)
cls.LOGGER.info("Finished offline migrate test.")