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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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"""Backup related commands""" |
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|
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# pylint: disable-msg=W0401,W0614,C0103 |
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# W0401: Wildcard import ganeti.cli |
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# W0614: Unused import %s from wildcard import (since we need cli) |
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# C0103: Invalid name gnt-backup |
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|
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import sys |
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|
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from ganeti.cli import * |
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from ganeti import opcodes |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import utils |
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|
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|
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_VALUE_TRUE = "true" |
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|
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|
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def PrintExportList(opts, args): |
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"""Prints a list of all the exported system images. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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exports = GetClient().QueryExports(opts.nodes, False) |
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retcode = 0 |
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for node in exports: |
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ToStdout("Node: %s", node) |
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ToStdout("Exports:") |
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if isinstance(exports[node], list): |
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for instance_name in exports[node]: |
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ToStdout("\t%s", instance_name) |
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else: |
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ToStdout(" Could not get exports list") |
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retcode = 1 |
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return retcode |
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|
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|
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def ExportInstance(opts, args): |
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"""Export an instance to an image in the cluster. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should contain only one element, the name |
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of the instance to be exported |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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op = opcodes.OpExportInstance(instance_name=args[0], |
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target_node=opts.node, |
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shutdown=opts.shutdown, |
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shutdown_timeout=opts.shutdown_timeout) |
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|
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fin_resu, dlist = SubmitOpCode(op) |
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if not isinstance(dlist, list): |
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ToStderr("Cannot parse execution results") |
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return 1 |
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tot_dsk = len(dlist) |
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# TODO: handle diskless instances |
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if dlist.count(False) == 0: |
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# all OK |
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rcode = 0 |
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elif dlist.count(True) == 0: |
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ToStderr("Error: No disks were backed up successfully." |
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" The export doesn't have any valid data," |
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" it is recommended to retry the operation.") |
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rcode = 1 |
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else: |
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ToStderr("Partial export failure: %d disks backed up, %d disks failed.", |
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dlist.count(True), dlist.count(False)) |
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rcode = 2 |
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if not fin_resu: |
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rcode = 1 |
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return rcode |
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|
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def ImportInstance(opts, args): |
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"""Add an instance to the cluster. |
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|
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This is just a wrapper over GenericInstanceCreate. |
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|
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""" |
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return GenericInstanceCreate(constants.INSTANCE_IMPORT, opts, args) |
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|
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|
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def RemoveExport(opts, args): |
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"""Remove an export from the cluster. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should contain only one element, the name of the |
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instance whose backup should be removed |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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instance = args[0] |
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op = opcodes.OpRemoveExport(instance_name=args[0]) |
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|
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SubmitOpCode(op) |
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return 0 |
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|
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|
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# this is defined separately due to readability only |
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import_opts = [ |
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NODE_PLACEMENT_OPT, |
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BACKEND_OPT, |
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DISK_TEMPLATE_OPT, |
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DISK_OPT, |
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OS_SIZE_OPT, |
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NET_OPT, |
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NONICS_OPT, |
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NWSYNC_OPT, |
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SRC_DIR_OPT, |
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SRC_NODE_OPT, |
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NOIPCHECK_OPT, |
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NONAMECHECK_OPT, |
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IALLOCATOR_OPT, |
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FILESTORE_DIR_OPT, |
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FILESTORE_DRIVER_OPT, |
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HYPERVISOR_OPT, |
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SUBMIT_OPT, |
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] |
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|
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commands = { |
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'list': ( |
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PrintExportList, ARGS_NONE, |
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[NODE_LIST_OPT], |
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"", "Lists instance exports available in the ganeti cluster"), |
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'export': ( |
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ExportInstance, ARGS_ONE_INSTANCE, |
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[FORCE_OPT, SINGLE_NODE_OPT, NOSHUTDOWN_OPT, SHUTDOWN_TIMEOUT_OPT], |
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"-n <target_node> [opts...] <name>", |
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"Exports an instance to an image"), |
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'import': ( |
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ImportInstance, ARGS_ONE_INSTANCE, import_opts, |
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"[...] -t disk-type -n node[:secondary-node] <name>", |
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"Imports an instance from an exported image"), |
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'remove': ( |
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RemoveExport, [ArgUnknown(min=1, max=1)], [], |
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"<name>", "Remove exports of named instance from the filesystem."), |
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} |
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|
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|
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if __name__ == '__main__': |
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sys.exit(GenericMain(commands)) |