[Xen-changelog] [xen-3.1-testing] xend: Fix name uniqueness check (revert xen-unstable 15168:a717cb2fac90).

["Xen patchbot-3.1-testing" <patchbot-3.1-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir@xxxxxxxxxxxxx>
# Date 1191315808 -3600
# Node ID d92bb1cd352cf1fa8f8fadfd718ae803c74193fd
# Parent  72193fd51a8cd8628f9e8352d2dfae668e1e1bb0
xend: Fix name uniqueness check (revert xen-unstable 15168:a717cb2fac90).

Changeset 15168:a717cb2fac90 altered check_name() in XendDomainInfo so
that it compares domain IDs instead of UUIDs. This breaks a number of
things

 - You can no longer use 'xm new' to define a persistent config file
   for
   a running guest. This breaks the key OS provisioning scenario where
   you boot a kenrel+initrd for the installer, and at the same time
   define a permanent config with pygrub.

 - It lets you define multiple inactive guests with different UUIDs,
   but
   the same name because all inactive guests have a domid of None. So
   you can now end up with multiple guests with same name, which is
   contrary to the goal implied by the patch which was name
   uniqueness.

It is unclear from the original commit logs just what scenario it was
trying to protect against, but the original checking of uniqueness
based on UUID was correct & is what was used in previous releases
XenD.

Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
xen-unstable changeset:   15973:8817a53c030f9c2c5f39fafad72aa9502342e7b3
xen-unstable date:        Thu Sep 27 18:08:11 2007 +0100
---
 tools/python/xen/xend/XendDomainInfo.py |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -r 72193fd51a8c -r d92bb1cd352c tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py   Tue Oct 02 09:53:58 2007 +0100
+++ b/tools/python/xen/xend/XendDomainInfo.py   Tue Oct 02 10:03:28 2007 +0100
@@ -2150,7 +2150,7 @@ class XendDomainInfo:
             raise VmError('Invalid VM Name')
 
         dom =  XendDomain.instance().domain_lookup_nr(name)
-        if dom and dom.domid != self.domid:
+        if dom and dom.info['uuid'] != self.info['uuid']:
             raise VmError("VM name '%s' already exists%s" %
                           (name,
                            dom.domid is not None and

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog