mirror of
https://github.com/virt-manager/virt-manager.git
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228 lines
8.0 KiB
Python
Executable File
228 lines
8.0 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright(c) FUJITSU Limited 2007.
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#
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# Script to set up an cloning guest configuration and kick off an cloning
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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,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU 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,
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# MA 02110-1301 USA.
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import argparse
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import logging
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import sys
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import virtinst.cli as cli
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from virtinst import Cloner
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from virtinst.cli import fail, print_stdout, print_stderr
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# General input gathering functions
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def get_clone_name(new_name, auto_clone, design):
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if not new_name and auto_clone:
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# Generate a name to use
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new_name = design.generate_clone_name()
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logging.debug("Auto-generated clone name '%s'", new_name)
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if not new_name:
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fail(_("A name is required for the new virtual machine,"
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" use '--name NEW_VM_NAME' to specify one."))
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design.clone_name = new_name
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def get_original_guest(guest_name, origfile, design):
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origxml = None
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if origfile:
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f = open(origfile, "r")
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origxml = f.read()
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f.close()
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try:
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design.original_xml = origxml
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return
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except (ValueError, RuntimeError) as e:
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fail(e)
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if not guest_name:
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fail(_("An original machine name is required,"
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" use '--original ORIGINAL_GUEST' and try again."))
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design.original_guest = guest_name
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def get_clone_macaddr(new_mac, design):
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if new_mac is None or new_mac[0] == "RANDOM":
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return
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design.clone_macs = new_mac
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def get_clone_diskfile(new_diskfiles, design, preserve, auto_clone):
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if new_diskfiles is None:
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new_diskfiles = [None]
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newidx = 0
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clonepaths = []
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for origpath in [d.path for d in design.original_disks]:
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if len(new_diskfiles) <= newidx:
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# Extend the new/passed paths list with None if it's not
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# long enough
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new_diskfiles.append(None)
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newpath = new_diskfiles[newidx]
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if newpath is None and auto_clone:
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newpath = design.generate_clone_disk_path(origpath)
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if origpath is None:
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newpath = None
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clonepaths.append(newpath)
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newidx += 1
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design.clone_paths = clonepaths
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for disk in design.clone_disks:
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cli.validate_disk(disk, warn_overwrite=not preserve)
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def parse_args():
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desc = _("Duplicate a virtual machine, changing all the unique "
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"host side configuration like MAC address, name, etc. \n\n"
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"The VM contents are NOT altered: virt-clone does not change "
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"anything _inside_ the guest OS, it only duplicates disks and "
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"does host side changes. So things like changing passwords, "
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"changing static IP address, etc are outside the scope of "
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"this tool. For these types of changes, please see virt-sysprep(1).")
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parser = cli.setupParser("%(prog)s --original [NAME] ...", desc)
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cli.add_connect_option(parser)
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geng = parser.add_argument_group(_("General Options"))
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geng.add_argument("-o", "--original", dest="original_guest",
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help=_("Name of the original guest; "
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"The status must be shut off or paused."))
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geng.add_argument("--original-xml",
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help=_("XML file to use as the original guest."))
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geng.add_argument("--auto-clone", action="store_true",
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help=_("Auto generate clone name and storage paths from"
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" the original guest configuration."))
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geng.add_argument("-n", "--name", dest="new_name",
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help=_("Name for the new guest"))
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geng.add_argument("-u", "--uuid", dest="new_uuid", help=argparse.SUPPRESS)
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geng.add_argument("--reflink", action="store_true", dest="reflink",
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help=_("use btrfs COW lightweight copy"))
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stog = parser.add_argument_group(_("Storage Configuration"))
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stog.add_argument("-f", "--file", dest="new_diskfile", action="append",
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help=_("New file to use as the disk image for the "
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"new guest"))
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stog.add_argument("--force-copy", dest="target", action="append",
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help=_("Force to copy devices (eg, if 'hdc' is a "
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"readonly cdrom device, --force-copy=hdc)"))
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stog.add_argument("--nonsparse", action="store_false", dest="sparse",
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default=True,
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help=_("Do not use a sparse file for the clone's "
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"disk image"))
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stog.add_argument("--preserve-data", action="store_false",
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dest="preserve", default=True,
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help=_("Do not clone storage, new disk images specified "
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"via --file are preserved unchanged"))
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stog.add_argument("--nvram", dest="new_nvram",
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help=_("New file to use as storage for nvram VARS"))
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netg = parser.add_argument_group(_("Networking Configuration"))
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netg.add_argument("-m", "--mac", dest="new_mac", action="append",
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help=_("New fixed MAC address for the clone guest. "
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"Default is a randomly generated MAC"))
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misc = parser.add_argument_group(_("Miscellaneous Options"))
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# Just used for clone tests
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misc.add_argument("--clone-running", action="store_true",
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default=False, help=argparse.SUPPRESS)
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cli.add_misc_options(misc, prompt=True, replace=True, printxml=True)
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return parser.parse_args()
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def main(conn=None):
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cli.earlyLogging()
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options = parse_args()
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options.quiet = options.quiet or options.xmlonly
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cli.setupLogging("virt-clone", options.debug, options.quiet)
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cli.convert_old_force(options)
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cli.parse_check(options.check)
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cli.set_prompt(options.prompt)
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if conn is None:
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conn = cli.getConnection(options.connect)
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if (options.new_diskfile is None and
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options.auto_clone is False and
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options.xmlonly is False):
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fail(_("Either --auto-clone or --file is required,"
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" use '--auto-clone or --file' and try again."))
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design = Cloner(conn)
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design.clone_running = options.clone_running
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design.replace = bool(options.replace)
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get_original_guest(options.original_guest, options.original_xml,
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design)
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get_clone_name(options.new_name, options.auto_clone, design)
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get_clone_macaddr(options.new_mac, design)
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if options.new_uuid is not None:
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design.clone_uuid = options.new_uuid
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if options.reflink is True:
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design.reflink = True
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for i in options.target or []:
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design.force_target = i
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design.clone_sparse = options.sparse
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design.preserve = options.preserve
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design.clone_nvram = options.new_nvram
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# This determines the devices that need to be cloned, so that
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# get_clone_diskfile knows how many new disk paths it needs
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design.setup_original()
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get_clone_diskfile(options.new_diskfile, design,
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not options.preserve, options.auto_clone)
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# setup design object
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design.setup_clone()
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if options.xmlonly:
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print_stdout(design.clone_xml, do_force=True)
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else:
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design.start_duplicate(cli.get_meter())
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print_stdout("")
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print_stdout(_("Clone '%s' created successfully.") % design.clone_name)
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logging.debug("end clone")
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return 0
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if __name__ == "__main__":
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try:
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sys.exit(main())
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except SystemExit as sys_e:
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sys.exit(sys_e.code)
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except KeyboardInterrupt:
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print_stderr(_("Installation aborted at user request"))
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except Exception as main_e:
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fail(main_e)
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