xen/15642_uuid_unique.patch

74 lines
3.3 KiB
Diff

# HG changeset patch
# User kfraser@localhost.localdomain
# Date 1185296704 -3600
# Node ID 207582c8d88b532783da5c6f5839336187556f0a
# Parent d9836851a2a4cf6e506f6a8e162a4c90c9f87d82
Add domain name check and UUID check to 'xm new' command.
Add a domain name check and a UUID check to xm new command. The check
logic is as follows:
- If the UUID is not specified
- If a VM with same name exists
=> Update the config for that existing VM
- Else no vm with same name exists
=> Define a brand new VM with auto-generated UUID
- Else UUID is specified
- If a VM with same UUID exists
- If name is different
=> Error
- Else if name is same
=> Update the config for that existing VM
- Else no VM with same UUID exists
- If name is different
=> Define a branch new VM with that name
- Else if name is same
=> Error
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Index: xen-3.1-testing/tools/python/xen/xend/XendDomain.py
===================================================================
--- xen-3.1-testing.orig/tools/python/xen/xend/XendDomain.py
+++ xen-3.1-testing/tools/python/xen/xend/XendDomain.py
@@ -51,6 +51,7 @@ from xen.xend.xenstore.xstransact import
from xen.xend.xenstore.xswatch import xswatch
from xen.util import mkdir, security
from xen.xend import uuid
+from xen.xend import sxp
xc = xen.lowlevel.xc.xc()
xoptions = XendOptions.instance()
@@ -946,6 +947,31 @@ class XendDomain:
try:
try:
domconfig = XendConfig.XendConfig(sxp_obj = config)
+
+ domains = self.list('all')
+ domains = map(lambda dom: dom.sxpr(), domains)
+ for dom in domains:
+ if sxp.child_value(config, 'uuid', None):
+ if domconfig['uuid'] == sxp.child_value(dom, 'uuid'):
+ if domconfig['name_label'] != sxp.child_value(dom, 'name'):
+ raise XendError("Domain UUID '%s' is already used." % \
+ domconfig['uuid'])
+ else:
+ # Update the config for that existing domain
+ # because it is same name and same UUID.
+ break
+ else:
+ if domconfig['name_label'] == sxp.child_value(dom, 'name'):
+ raise XendError("Domain name '%s' is already used." % \
+ domconfig['name_label'])
+ else:
+ if domconfig['name_label'] == sxp.child_value(dom, 'name'):
+ # Overwrite the auto-generated UUID by the UUID
+ # of the existing domain. And update the config
+ # for that existing domain.
+ domconfig['uuid'] = sxp.child_value(dom, 'uuid')
+ break
+
dominfo = XendDomainInfo.createDormant(domconfig)
log.debug("Creating new managed domain: %s" %
dominfo.getName())