def extract_vgname(str_in):
"""Search for and return a VG name
Search 'str_in' for a substring in the form of 'VG_XenStorage-<UUID>'.
If there are more than one VG names, the first is returned.
Input:
str_in -- (str) string to search for a VG name
in the format specified above.
Return:
vgname -- if found -> (str)
if not found -> None
Raise:
TypeError
"""
if not util.is_string(str_in):
raise TypeError("'str_in' not of type 'str'.")
i = str_in.find(VG_PREFIX)
prefix = VG_PREFIX
if i == -1:
i = str_in.find(EXT_PREFIX)
prefix = EXT_PREFIX
uuid_start = i + len(prefix)
re_obj = util.match_uuid(str_in[uuid_start:])
if i != -1 and re_obj:
return prefix + re_obj.group(0) # vgname
return None
def extract_vgname(str_in):
"""Search for and return a VG name
Search 'str_in' for a substring in the form of 'VG_XenStorage-<UUID>'.
If there are more than one VG names, the first is returned.
Input:
str_in -- (str) string to search for a VG name
in the format specified above.
Return:
vgname -- if found -> (str)
if not found -> None
Raise:
TypeError
"""
if not util.is_string(str_in):
raise TypeError("'str_in' not of type 'str'.")
i = str_in.find(VG_PREFIX)
prefix = VG_PREFIX
if i == -1:
i = str_in.find(EXT_PREFIX)
prefix = EXT_PREFIX
uuid_start = i + len(prefix)
re_obj = util.match_uuid(str_in[uuid_start:])
if i != -1 and re_obj:
return prefix + re_obj.group(0) # vgname
return None
def attach(self, sr_uuid):
if not util.match_uuid(sr_uuid) or not lvutil._checkVG(self.vgname):
raise xs_errors.XenError('SRUnavailable', \
opterr='no such volume group: %s' % self.vgname)
if self.isMaster:
#Update SCSIid string
util.SMlog("Calling devlist_to_serial")
scsiutil.add_serial_record(self.session, self.sr_ref, \
scsiutil.devlist_to_serialstring(self.root.split(',')))
# Set the block scheduler
try:
self.other_config = self.session.xenapi.SR.get_other_config(self.sr_ref)
if self.other_config.has_key('scheduler') and self.other_config['scheduler'] != self.sched:
self.sched = self.other_config['scheduler']
for dev in self.root.split(','):
realdev = os.path.realpath(dev)[5:]
util.set_scheduler(realdev, self.sched)
except:
pass
