3 # Copyright (C) 2014 Red Hat Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 def cmdline (subparsers):
28 p = subparsers.add_parser (
30 help='live migrate virtual machine(s)',
33 'wildcards', nargs='+',
34 help='virtual machine(s) to be migrated'
38 help='destination node'
40 p.set_defaults (run=run)
42 def run (c, args, nodes):
43 running, _ = lib.get_all_guests (c, nodes.values ())
45 # Identify the VMs to be migrated.
47 for vm in running.values():
50 # Form the name of this VM (eg. "ham0:vm") so we can match it
51 # against the wildcards (eg. "ham0:*")
52 name = node.name + ":" + dom.name()
53 for wc in args.wildcards:
54 if fnmatch.fnmatch (name, wc) or fnmatch.fnmatch (dom.name(), wc):
55 migrate_vms.append (vm)
58 sys.exit ("error: no VMs are going to be migrated")
60 # Get destination node. It can be written either 'dest' or 'dest:'
61 m = re.match (r'(.*):$', args.dest)
63 args.dest = m.group (1)
65 if args.dest not in nodes:
66 sys.exit ("error: destination node (%s) does not exist" % args.dest)
67 dest = nodes[args.dest]
69 dconn = libvirt.open (dest.uri)
71 sys.exit ("error: could not open a libvirt connection to %s (URI: %s)" %
72 (dest.host, dest.uri))
74 for vm in migrate_vms:
76 dom.migrate (dconn, libvirt.VIR_MIGRATE_LIVE)