Statistics
| Branch: | Tag: | Revision:

root / scripts / gnt-backup @ 9a033156

History | View | Annotate | Download (7.2 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

    
31
def PrintExportList(opts, args):
32
  """Prints a list of all the exported system images.
33

    
34
  Args:
35
   opts - class with options as members (should be empty)
36
   args - should be empty
37

    
38
  Returns:
39
    nothing
40

    
41
  """
42
  op = opcodes.OpQueryExports(nodes=opts.nodes)
43
  exports = SubmitOpCode(op)
44
  for node in exports:
45
    print ("Node: %s" % node)
46
    print ("Exports:")
47
    if isinstance(exports[node], list):
48
      for instance_name in exports[node]:
49
        print ("\t%s" % instance_name)
50
    else:
51
      print ("  Could not get exports list")
52

    
53

    
54
def ExportInstance(opts, args):
55
  """Export an instance to an image in the cluster.
56

    
57
  Args:
58
   opts - class with options as members
59
   args - list with a single element, the instance name
60

    
61
  Returns:
62
    1 in case of error, 0 otherwise
63

    
64
  """
65
  op = opcodes.OpExportInstance(instance_name=args[0],
66
                                target_node=opts.node,
67
                                shutdown=opts.shutdown)
68

    
69
  SubmitOpCode(op)
70

    
71

    
72
def ImportInstance(opts, args):
73
  """Add an instance to the cluster.
74

    
75
  Args:
76
   opts - class with options as members
77
   args - list with a single element, the new instance name
78
  Opts used:
79
   memory - amount of memory to allocate to instance (MiB)
80
   size - amount of disk space to allocate to instance (MiB)
81
   os - which OS to run on instance
82
   node - node to run new instance on
83
   src_node - node containing the export
84
   src_dir - directory on the old node with the export in it
85

    
86
  Returns:
87
    1 in case of error, 0 otherwise
88

    
89
  """
90
  instance = args[0]
91

    
92
  (pnode, snode) = SplitNodeOption(opts.node)
93

    
94
  op = opcodes.OpCreateInstance(instance_name=instance, mem_size=opts.mem,
95
                                disk_size=opts.size, swap_size=opts.swap,
96
                                disk_template=opts.disk_template,
97
                                mode=constants.INSTANCE_IMPORT,
98
                                pnode=pnode, snode=snode,
99
                                vcpus=opts.vcpus, ip_check=opts.ip_check,
100
                                ip=opts.ip, bridge=opts.bridge, start=False,
101
                                src_node=opts.src_node, src_path=opts.src_dir,
102
                                wait_for_sync=opts.wait_for_sync, mac="auto",
103
                                file_storage_dir=opts.file_storage_dir,
104
                                file_driver=opts.file_driver,
105
                                iallocator=opts.iallocator)
106
  SubmitOpCode(op)
107
  return 0
108

    
109

    
110
def RemoveExport(opts, args):
111
  """Remove an export from the cluster.
112

    
113
  Args:
114
   opts - class with options as members
115
   args - list with a single element, the exported instance to remove
116
  Opts used:
117

    
118
  Returns:
119
    1 in case of error, 0 otherwise
120

    
121
  """
122
  instance = args[0]
123
  op = opcodes.OpRemoveExport(instance_name=args[0])
124

    
125
  SubmitOpCode(op)
126
  return 0
127

    
128

    
129
# this is defined separately due to readability only
130
import_opts = [
131
  DEBUG_OPT,
132
  make_option("-n", "--node", dest="node",
133
              help="Target node and optional secondary node",
134
              metavar="<pnode>[:<snode>]"),
135
  cli_option("-s", "--os-size", dest="size", help="Disk size, in MiB unless"
136
             " a suffix is used",
137
             default=20 * 1024, type="unit", metavar="<size>"),
138
  cli_option("--swap-size", dest="swap", help="Swap size",
139
             default=4 * 1024, type="unit", metavar="<size>"),
140
  cli_option("-m", "--memory", dest="mem", help="Memory size",
141
             default=128, type="unit", metavar="<mem>"),
142
  make_option("-p", "--cpu", dest="vcpus", help="Number of virtual CPUs",
143
              default=1, type="int", metavar="<PROC>"),
144
  make_option("-t", "--disk-template", dest="disk_template",
145
              help="Custom disk setup (diskless, plain, local_raid1,"
146
              " remote_raid1 or drbd)", default=None, metavar="TEMPL"),
147
  make_option("-i", "--ip", dest="ip",
148
              help="IP address ('none' [default], 'auto', or specify address)",
149
              default='none', type="string", metavar="<ADDRESS>"),
150
  make_option("--no-wait-for-sync", dest="wait_for_sync", default=True,
151
              action="store_false", help="Don't wait for sync (DANGEROUS!)"),
152
  make_option("-b", "--bridge", dest="bridge",
153
              help="Bridge to connect this instance to",
154
              default=None, metavar="<bridge>"),
155
  make_option("--src-node", dest="src_node", help="Source node",
156
              metavar="<node>"),
157
  make_option("--src-dir", dest="src_dir", help="Source directory",
158
              metavar="<dir>"),
159
  make_option("--no-ip-check", dest="ip_check", default=True,
160
              action="store_false", help="Don't check that the instance's IP"
161
              " is alive"),
162
  make_option("--iallocator", metavar="<NAME>",
163
              help="Select nodes for the instance automatically using the"
164
              " <NAME> iallocator plugin", default=None, type="string"),
165
  make_option("--file-storage-dir", dest="file_storage_dir",
166
              help="Relative path under default cluster-wide file storage dir"
167
              " to store file-based disks", default=None,
168
              metavar="<DIR>"),
169
  make_option("--file-driver", dest="file_driver", help="Driver to use"
170
              " for image files", default="loop", metavar="<DRIVER>"),
171
  ]
172

    
173
commands = {
174
  'list': (PrintExportList, ARGS_NONE,
175
           [DEBUG_OPT,
176
            make_option("--node", dest="nodes", default=[], action="append",
177
                        help="List only backups stored on this node"
178
                             " (can be used multiple times)"),
179
            ],
180
           "", "Lists instance exports available in the ganeti cluster"),
181
  'export': (ExportInstance, ARGS_ONE,
182
             [DEBUG_OPT, FORCE_OPT,
183
              make_option("-n", "--node", dest="node", help="Target node",
184
                          metavar="<node>"),
185
              make_option("","--noshutdown", dest="shutdown",
186
                          action="store_false", default=True,
187
                          help="Don't shutdown the instance (unsafe)"), ],
188
             "-n <target_node> [opts...] <name>",
189
             "Exports an instance to an image"),
190
  'import': (ImportInstance, ARGS_ONE, import_opts, "[opts...] <name>",
191
             "Imports an instance from an exported image"),
192
  'remove': (RemoveExport, ARGS_ONE,
193
             [DEBUG_OPT],
194
             "<name>",
195
             "Remove exports of named instance from the filesystem."),
196
  }
197

    
198
if __name__ == '__main__':
199
  sys.exit(GenericMain(commands))