Package ganeti :: Package client :: Module gnt_backup
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Source Code for Module ganeti.client.gnt_backup

  1  # 
  2  # 
  3   
  4  # Copyright (C) 2006, 2007, 2010, 2011, 2013 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  """Backup related commands""" 
 22   
 23  # pylint: disable=W0401,W0613,W0614,C0103 
 24  # W0401: Wildcard import ganeti.cli 
 25  # W0613: Unused argument, since all functions follow the same API 
 26  # W0614: Unused import %s from wildcard import (since we need cli) 
 27  # C0103: Invalid name gnt-backup 
 28   
 29  from ganeti.cli import * 
 30  from ganeti import opcodes 
 31  from ganeti import constants 
 32  from ganeti import errors 
 33  from ganeti import qlang 
 34   
 35   
 36  _LIST_DEF_FIELDS = ["node", "export"] 
 37   
 38   
39 -def PrintExportList(opts, args):
40 """Prints a list of all the exported system images. 41 42 @param opts: the command line options selected by the user 43 @type args: list 44 @param args: should be an empty list 45 @rtype: int 46 @return: the desired exit code 47 48 """ 49 selected_fields = ParseFields(opts.output, _LIST_DEF_FIELDS) 50 51 qfilter = qlang.MakeSimpleFilter("node", opts.nodes) 52 53 cl = GetClient(query=True) 54 55 return GenericList(constants.QR_EXPORT, selected_fields, None, opts.units, 56 opts.separator, not opts.no_headers, 57 verbose=opts.verbose, qfilter=qfilter, cl=cl)
58 59
60 -def ListExportFields(opts, args):
61 """List export fields. 62 63 @param opts: the command line options selected by the user 64 @type args: list 65 @param args: fields to list, or empty for all 66 @rtype: int 67 @return: the desired exit code 68 69 """ 70 cl = GetClient(query=True) 71 72 return GenericListFields(constants.QR_EXPORT, args, opts.separator, 73 not opts.no_headers, cl=cl)
74 75
76 -def ExportInstance(opts, args):
77 """Export an instance to an image in the cluster. 78 79 @param opts: the command line options selected by the user 80 @type args: list 81 @param args: should contain only one element, the name 82 of the instance to be exported 83 @rtype: int 84 @return: the desired exit code 85 86 """ 87 ignore_remove_failures = opts.ignore_remove_failures 88 89 if not opts.node: 90 raise errors.OpPrereqError("Target node must be specified", 91 errors.ECODE_INVAL) 92 93 op = opcodes.OpBackupExport(instance_name=args[0], 94 target_node=opts.node, 95 shutdown=opts.shutdown, 96 shutdown_timeout=opts.shutdown_timeout, 97 remove_instance=opts.remove_instance, 98 ignore_remove_failures=ignore_remove_failures) 99 100 SubmitOrSend(op, opts) 101 return 0
102 103
104 -def ImportInstance(opts, args):
105 """Add an instance to the cluster. 106 107 This is just a wrapper over GenericInstanceCreate. 108 109 """ 110 return GenericInstanceCreate(constants.INSTANCE_IMPORT, opts, args)
111 112
113 -def RemoveExport(opts, args):
114 """Remove an export from the cluster. 115 116 @param opts: the command line options selected by the user 117 @type args: list 118 @param args: should contain only one element, the name of the 119 instance whose backup should be removed 120 @rtype: int 121 @return: the desired exit code 122 123 """ 124 op = opcodes.OpBackupRemove(instance_name=args[0]) 125 126 SubmitOrSend(op, opts) 127 return 0
128 129 130 # this is defined separately due to readability only 131 import_opts = [ 132 IDENTIFY_DEFAULTS_OPT, 133 SRC_DIR_OPT, 134 SRC_NODE_OPT, 135 IGNORE_IPOLICY_OPT, 136 ] 137 138 139 commands = { 140 "list": ( 141 PrintExportList, ARGS_NONE, 142 [NODE_LIST_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, VERBOSE_OPT], 143 "", "Lists instance exports available in the ganeti cluster"), 144 "list-fields": ( 145 ListExportFields, [ArgUnknown()], 146 [NOHDR_OPT, SEP_OPT], 147 "[fields...]", 148 "Lists all available fields for exports"), 149 "export": ( 150 ExportInstance, ARGS_ONE_INSTANCE, 151 [FORCE_OPT, SINGLE_NODE_OPT, NOSHUTDOWN_OPT, SHUTDOWN_TIMEOUT_OPT, 152 REMOVE_INSTANCE_OPT, IGNORE_REMOVE_FAILURES_OPT, DRY_RUN_OPT, 153 PRIORITY_OPT, SUBMIT_OPT], 154 "-n <target_node> [opts...] <name>", 155 "Exports an instance to an image"), 156 "import": ( 157 ImportInstance, ARGS_ONE_INSTANCE, COMMON_CREATE_OPTS + import_opts, 158 "[...] -t disk-type -n node[:secondary-node] <name>", 159 "Imports an instance from an exported image"), 160 "remove": ( 161 RemoveExport, [ArgUnknown(min=1, max=1)], 162 [DRY_RUN_OPT, PRIORITY_OPT, SUBMIT_OPT], 163 "<name>", "Remove exports of named instance from the filesystem."), 164 } 165 166
167 -def Main():
168 return GenericMain(commands)
169