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https://github.com/virt-manager/virt-manager.git
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d107762880
When virt-clone is used without autoclone or destination file, libvirt errors with message "ERROR missing source information for device vda". This doesn't convey what is missing. This patch will indicate which options to use. Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
224 lines
7.9 KiB
Python
Executable File
224 lines
7.9 KiB
Python
Executable File
#!/usr/bin/env python2
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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), 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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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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# 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, 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, main_e:
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fail(main_e)
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