Statistics
| Branch: | Tag: | Revision:

root / scripts / gnt-backup @ 4a72cc75

History | View | Annotate | Download (5.5 kB)

1
#!/usr/bin/python
2
#
3

    
4
# Copyright (C) 2006, 2007 Google Inc.
5
#
6
# This program is free software; you can redistribute it and/or modify
7
# it under the terms of the GNU General Public License as published by
8
# the Free Software Foundation; either version 2 of the License, or
9
# (at your option) any later version.
10
#
11
# This program is distributed in the hope that it will be useful, but
12
# WITHOUT ANY WARRANTY; without even the implied warranty of
13
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
# General Public License for more details.
15
#
16
# You should have received a copy of the GNU General Public License
17
# along with this program; if not, write to the Free Software
18
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19
# 02110-1301, USA.
20

    
21

    
22
import sys
23
from optparse import make_option
24

    
25
from ganeti.cli import *
26
from ganeti import cmdlib
27
from ganeti import opcodes
28
from ganeti import constants
29

    
30
def PrintExportList(opts, args):
31
  """Prints a list of all the exported system images.
32

    
33
  Args:
34
   opts - class with options as members (should be empty)
35
   args - should be empty
36

    
37
  Returns:
38
    nothing
39

    
40
  """
41
  op = opcodes.OpQueryExports(nodes=opts.nodes)
42
  exports = SubmitOpCode(op)
43
  for node in exports:
44
    print ("Node: %s" % node)
45
    print ("Exports:")
46
    for instance_name in exports[node]:
47
      print ("\t%s" % instance_name)
48

    
49

    
50
def ExportInstance(opts, args):
51
  """Export an instance to an image in the cluster.
52

    
53
  Args:
54
   opts - class with options as members
55
   args - list with a single element, the instance name
56

    
57
  Returns:
58
    1 in case of error, 0 otherwise
59

    
60
  """
61
  op = opcodes.OpExportInstance(instance_name=args[0],
62
                                target_node=opts.node,
63
                                shutdown=opts.shutdown)
64

    
65
  SubmitOpCode(op)
66

    
67
def ImportInstance(opts, args):
68
  """Add an instance to the cluster.
69

    
70
  Args:
71
   opts - class with options as members
72
   args - list with a single element, the new instance name
73
  Opts used:
74
   memory - amount of memory to allocate to instance (MiB)
75
   size - amount of disk space to allocate to instance (MiB)
76
   os - which OS to run on instance
77
   node - node to run new instance on
78
   src_node - node containing the export
79
   src_dir - directory on the old node with the export in it
80

    
81
  Returns:
82
    1 in case of error, 0 otherwise
83

    
84
  """
85
  instance = args[0]
86

    
87
  op = opcodes.OpCreateInstance(instance_name=instance, mem_size=opts.mem,
88
                                disk_size=opts.size, swap_size=opts.swap,
89
                                disk_template=opts.disk_template,
90
                                mode=constants.INSTANCE_IMPORT,
91
                                pnode=opts.node, snode=opts.snode,
92
                                vcpus=opts.vcpus,
93
                                ip=opts.ip, bridge=opts.bridge, start=False,
94
                                src_node=opts.src_node, src_path=opts.src_dir,
95
                                wait_for_sync=opts.wait_for_sync)
96
  SubmitOpCode(op)
97
  return 0
98

    
99

    
100
# options used in more than one cmd
101
node_opt = make_option("-n", "--node", dest="node", help="Target node",
102
                       metavar="<node>")
103

    
104
# this is defined separately due to readability only
105
import_opts = [
106
  DEBUG_OPT,
107
  node_opt,
108
  cli_option("-s", "--os-size", dest="size", help="Disk size",
109
             default=20 * 1024, type="unit", metavar="<size>"),
110
  cli_option("--swap-size", dest="swap", help="Swap size",
111
             default=4 * 1024, type="unit", metavar="<size>"),
112
  cli_option("-m", "--memory", dest="mem", help="Memory size",
113
             default=128, type="unit", metavar="<mem>"),
114
  make_option("-p", "--cpu", dest="vcpus", help="Number of virtual CPUs",
115
              default=1, type="int", metavar="<PROC>"),
116
  make_option("-t", "--disk-template", dest="disk_template",
117
              help="Custom disk setup (diskless, plain, local_raid1 or"
118
              " remote_raid1)", default=None, metavar="TEMPL"),
119
  make_option("-i", "--ip", dest="ip",
120
              help="IP address ('none' [default], 'auto', or specify address)",
121
              default='none', type="string", metavar="<ADDRESS>"),
122
  make_option("--no-wait-for-sync", dest="wait_for_sync", default=True,
123
              action="store_false", help="Don't wait for sync (DANGEROUS!)"),
124
  make_option("--secondary-node", dest="snode",
125
              help="Secondary node for remote_raid1 disk layout",
126
              metavar="<node>"),
127
  make_option("-b", "--bridge", dest="bridge",
128
              help="Bridge to connect this instance to",
129
              default=None, metavar="<bridge>"),
130
  make_option("--src-node", dest="src_node", help="Source node",
131
              metavar="<node>"),
132
  make_option("--src-dir", dest="src_dir", help="Source directory",
133
              metavar="<dir>"),
134
  ]
135

    
136
commands = {
137
  'list': (PrintExportList, ARGS_NONE,
138
           [DEBUG_OPT,
139
            make_option("--nodes", dest="nodes", default=[], action="append",
140
                        help="List only backups stored on these nodes"),
141
            ],
142
           "", "Lists instance exports available in the ganeti cluster"),
143
  'export': (ExportInstance, ARGS_ONE,
144
             [node_opt, DEBUG_OPT, FORCE_OPT,
145
              make_option("","--noshutdown", dest="shutdown",
146
                          action="store_false", default=True,
147
                          help="Don't shutdown the instance (unsafe)"), ],
148
             "[opts...] <name>",
149
             "Exports an instance to an image"),
150
  'import': (ImportInstance, ARGS_ONE, import_opts, "[opts...] <name>",
151
             "Imports an instance from an exported image"),
152
  }
153

    
154
if __name__ == '__main__':
155
  sys.exit(GenericMain(commands))