Package starcluster :: Package commands :: Module resizevolume
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Source Code for Module starcluster.commands.resizevolume

 1  from starcluster import node 
 2  from starcluster import volume 
 3  from starcluster import static 
 4   
 5  from createvolume import CmdCreateVolume 
 6   
 7   
8 -class CmdResizeVolume(CmdCreateVolume):
9 """ 10 resizevolume [options] <volume_id> <volume_size> 11 12 Resize an existing EBS volume 13 14 NOTE: The EBS volume must either be unpartitioned or contain only a single 15 partition. Any other configuration will be aborted. 16 """ 17 18 names = ['resizevolume', 'res'] 19
20 - def addopts(self, parser):
21 parser.add_option( 22 "-z", "--zone", dest="dest_zone", 23 action="store", type="string", default=None, 24 help="Create the resized volume in a different zone than the " 25 "original volume (must be within the same region)") 26 parser.add_option( 27 "-k", "--keypair", dest="keypair", 28 action="store", type="string", default=None, 29 help="The keypair to use when launching host instance " 30 "(must be defined in the config)") 31 parser.add_option( 32 "-H", "--host-instance", dest="host_instance", 33 action="store", type="string", default=None, 34 help="Use existing instance as volume host rather than " 35 "launching a new host") 36 parser.add_option( 37 "-d", "--detach-volume", dest="detach_vol", 38 action="store_true", default=False, 39 help="Detach new volume from host instance after creation") 40 parser.add_option( 41 "-s", "--shutdown-volume-host", dest="shutdown_instance", 42 action="store_true", default=False, 43 help="Shutdown host instance after creating volume") 44 parser.add_option( 45 "-i", "--image-id", dest="image_id", 46 action="store", type="string", default=None, 47 help="The AMI to use when launching volume host instance") 48 parser.add_option( 49 "-I", "--instance-type", dest="instance_type", 50 action="store", type="choice", default="m1.small", 51 choices=static.INSTANCE_TYPES.keys(), 52 help="The instance type to use when launching volume " 53 "host instance") 54 parser.add_option( 55 "-r", "--resizefs-cmd", dest="resizefs_cmd", 56 action="store", type="string", default="resize2fs", 57 help="Specify alternate resizefs command to use when " 58 "formatting volume (default: resize2fs)")
59
60 - def execute(self, args):
61 if len(args) != 2: 62 self.parser.error( 63 "you must specify a volume id and a size (in GB)") 64 volid, size = args 65 size = self._get_size_arg(size) 66 vol = self.ec2.get_volume(volid) 67 zone = vol.zone 68 if self.opts.dest_zone: 69 zone = self.ec2.get_zone(self.opts.dest_zone).name 70 key = self.opts.keypair 71 host_instance = None 72 if self.opts.host_instance: 73 host_instance = self.ec2.get_instance(self.opts.host_instance) 74 key = host_instance.key_name 75 keypair, key_location = self._load_keypair(key) 76 if host_instance: 77 host_instance = node.Node(host_instance, key_location, 78 alias="volumecreator_host") 79 kwargs = self.specified_options_dict 80 kwargs.update(dict(keypair=keypair, key_location=key_location, 81 host_instance=host_instance)) 82 vc = volume.VolumeCreator(self.ec2, **kwargs) 83 if host_instance: 84 vc._validate_host_instance(host_instance, zone) 85 self.catch_ctrl_c() 86 new_volid = vc.resize(vol, size, dest_zone=self.opts.dest_zone) 87 if new_volid: 88 self.log.info( 89 "Volume %s was successfully resized to %sGB" % (volid, size)) 90 self.log.info("New volume id is: %s" % new_volid) 91 else: 92 self.log.error("failed to resize volume %s" % volid)
93