def test_dm_id(zero_dm_device):
# Resolve the dm link and get dm name of the device.
device_path = "{}{}".format(DMPATH_PREFIX, zero_dm_device)
real_path = os.path.realpath(device_path)
device_name = real_path.split("/")[-1]
dm_id = devicemapper.getDmId(zero_dm_device)
assert device_name == dm_id
# Test also devicemapper.resolveDevName() as it returns device_name
# directly.
resolved_name = devicemapper.resolveDevName(device_name)
assert device_name == resolved_name
# Or returns dm_id().
resolved_name = devicemapper.resolveDevName(zero_dm_device)
assert device_name == resolved_name
def _resize_if_needed(guid):
name = devicemapper.getDmId(guid)
slaves = [(slave, getDeviceSize(slave))
for slave in devicemapper.getSlaves(name)]
if len(slaves) == 0:
log.warning("Map %r has no slaves" % guid)
return False
if len(set(size for slave, size in slaves)) != 1:
raise Error("Map %r slaves size differ %s" % (guid, slaves))
map_size = getDeviceSize(name)
slave_size = slaves[0][1]
if map_size == slave_size:
return False
log.info("Resizing map %r (map_size=%d, slave_size=%d)",
guid, map_size, slave_size)
supervdsm.getProxy().resizeMap(name)
return True
def _resize_if_needed(guid):
name = devicemapper.getDmId(guid)
slaves = [(slave, getDeviceSize(slave))
for slave in devicemapper.getSlaves(name)]
if len(slaves) == 0:
log.warning("Map %r has no slaves" % guid)
return False
if len(set(size for slave, size in slaves)) != 1:
raise Error("Map %r slaves size differ %s" % (guid, slaves))
map_size = getDeviceSize(name)
slave_size = slaves[0][1]
if map_size == slave_size:
return False
log.info("Resizing map %r (map_size=%d, slave_size=%d)",
guid, map_size, slave_size)
supervdsm.getProxy().resizeMap(name)
return True
def _getpvblksize(pv):
dev = devicemapper.getDmId(os.path.basename(pv))
return multipath.getDeviceBlockSizes(dev)
def test_is_dm_device(zero_dm_device):
dm_id = devicemapper.getDmId(zero_dm_device)
assert devicemapper.isDmDevice(dm_id)
def test_is_block_device(zero_dm_device):
dm_id = devicemapper.getDmId(zero_dm_device)
assert devicemapper.isBlockDevice(dm_id)
def test_is_virtual_device(zero_dm_device):
dm_id = devicemapper.getDmId(zero_dm_device)
assert devicemapper.isVirtualDevice(dm_id)
def test_dev_name(zero_dm_device):
dm_id = devicemapper.getDmId(zero_dm_device)
device_name = devicemapper.getDevName(dm_id)
assert zero_dm_device == device_name
def _getpvblksize(pv):
dev = devicemapper.getDmId(os.path.basename(pv))
return multipath.getDeviceBlockSizes(dev)