Пример #1
0
	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
Пример #2
0
	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