def getVGBlockSizes(vgUUID):
pvs = listPVNames(vgUUID)
if not pvs:
raise se.VolumeGroupDoesNotExist("vg_uuid: %s" % vgUUID)
# Returning the block size of the first pv is correct since we don't allow
# devices with different block size to be on the same VG.
return _getpvblksize(pvs[0])
def getVG(self, vgName):
if vgName not in self.vgmd:
raise se.VolumeGroupDoesNotExist(vgName)
vg_md = deepcopy(self.vgmd[vgName])
vg_attr = real_lvm.VG_ATTR(**vg_md['attr'])
vg_md['attr'] = vg_attr
return real_lvm.VG(**vg_md)
def test_VolumeGroupDoesNotExist():
# Require a VG name or UUID at initialization.
# Empty constructor shall raise.
with pytest.raises(ValueError):
e = storage_exception.VolumeGroupDoesNotExist()
# Expected error type is LVMCommandError.
with pytest.raises(TypeError):
e = storage_exception.VolumeGroupDoesNotExist("vg-name", error="error")
# Correct initialization.
fake_error = storage_exception.LVMCommandError(
rc=5, cmd=["fake"], out=["fake output"], err=["fake error"])
e = storage_exception.VolumeGroupDoesNotExist("vg-name", error=fake_error)
assert e.error == fake_error
# Check error format
formatted = str(e)
assert "vg_name=vg-name" in formatted
assert "error=" in formatted
assert "vg_uuid=" not in formatted
def getVGbyUUID(vgUUID):
# cycle through all the VGs until the one with the given UUID found
for vg in getAllVGs():
try:
if vg.uuid == vgUUID:
return vg
except AttributeError as e:
# An unreloadable VG found but may be we are not looking for it.
log.debug("%s" % e.message, exc_info=True)
continue
# If not cry loudly
raise se.VolumeGroupDoesNotExist("vg_uuid: %s" % vgUUID)
def getVG(vgName):
vg = _lvminfo.getVg(vgName) # returns single VG namedtuple
if not vg:
raise se.VolumeGroupDoesNotExist(vgName)
else:
return vg
def checkVGBlockSizes(vgUUID, vgBlkSize=None):
pvs = listPVNames(vgUUID)
if not pvs:
raise se.VolumeGroupDoesNotExist("vg_uuid: %s" % vgUUID)
_checkpvsblksize(pvs, vgBlkSize)