def NewChunkList(self, chksizes):
volumelist = []
serlist = self.mds.GetChunkServers(5)
if len(serlist) == 0:
logging.error('Currently not ChunkServer is available')
return None
for size in chksizes:
server = serlist[0]
addr = server.ServiceAddress
port = server.ServicePort
chkclient = self.chkpool.get(self.guid, addr, port)
chunks = chkclient.NewChunk(size, 1)
if chunks == []:
pass
volume = Object()
volume.size = size
volume.assembler = 'chunk'
volume.guid = Guid.toStr(chunks.guids[0])
volume.parameters = [volume.guid, '', '', addr, str(port)]
path, nodename = self.MountChunk(volume)
volume.parameters[1] = path
volume.parameters[2] = nodename
if path == None:
for volume in volumelist:
self.UnmountChunk(volume)
logging.error('Mount chunk failed')
return None
volumelist.append(volume)
return volumelist
def CreateVolume(self, volname, volsize, voltype, chksizes, volnames, params):
vollist = []
if len(volnames) > 0:
volsize = 0
for name in volnames:
try:
vol = self.mds.ReadVolumeInfo(name)
except IOError as ex:
if str(ex).find('No such file or directory') > -1:
logging.error('Volume '+name+' does not exist')
return False
else:
raise ex
if vol.parameters[2] == 'subvolume':
logging.error('volume '+name+' is a subvolume of another volume')
return False
if vol.parameters[3] == 'inactive':
logging.warn('Volume '+name+' is inactive')
logging.warn('Mounting volume '+name)
if not self.MountVolume(name):
logging.error('Mount volume '+name+' failed')
return False
volsize += vol.size
vollist.append(vol)
if len(chksizes) == 0 and len(volnames) == 0:
totsize = volsize
while totsize > CHUNKSIZE:
chksizes.append(CHUNKSIZE)
totsize -= CHUNKSIZE
chksizes.append(totsize)
if voltype == 'gfs':
temlist = []
for chksize in chksizes:
temlist.append(chksize)
temlist.append(chksize)
temlist.append(chksize)
chksizes = temlist
if len(chksizes) > 0:
vollist = self.NewChunkList(chksizes)
if vollist == None:
logging.error('New Chunk(s) failed')
return False
volume = Object()
volume.size = volsize
volume.assembler = voltype
volume.subvolumes = vollist
volume.guid = Guid.toStr(Guid.generate())
volume.parameters = [volname, '/dev/mapper/'+volname, 'volume', 'active']
volume.parameters.extend(params)
if self.dmclient.MapVolume(volume) == False:
logging.error('device mapper: create volume '+volname+' failed')
if volume.subvolumes[0].assembler == 'chunk':
for subvol in volume.subvolumes:
self.DeleteVolumeTree(subvol)
return False
self.mds.WriteVolumeInfo(volume)
for vol in vollist:
if vol.assembler != 'chunk':
vol.parameters[2] = 'subvolume'
vol.parameters[3] = 'active'
self.mds.WriteVolumeInfo(vol)
return True
