def vbtomb(vb):
mb = vbtos(vb) / (1024 * 1024 / 512)
tvb, todd = stovb(mb * (1024 * 1024 / 512))
if tvb != vb or todd != 0:
logger.info("vb %s != %s (%s)" % \
(stovb(mb * (1024 * 1024 / 512)), vb, mb))
raise xmlrpclib.Fault(errno.EINVAL, 'EINVAL')
return mb
def do(self):
assert len(self.components) == 1
c = self.components[0]
assert c.iscsi_ref != None
name = getDextDevName(self.dext_ssvrid, self.lvolid)
path = getDmDevPath(name)
if not os.path.exists(path):
command = "echo 0 %s linear %s %s | dmsetup create %s" % (
vbtos(self.capacity),
c.path,
vbtos(self.dext_offset),
name,
)
execute_retry_not_path_exist(command, path, DMSETUP_RETRY_TIMES)
self.path = path
os.close(c.iscsi_ref)
c.iscsi_ref = None