Andrew D. Ball
2006-Jan-18 18:41 UTC
[Xen-devel] [PATCH] [RFC] allow user to set domU xenstore UUID
I''d like for the xenstore UUID for a domU to be able to stay the same
across virtual power cycles of domU''s. I believe this patch makes one
approach for doing this possible.
I was unable to get the 01_localhost_pos xm-test test case to pass for
an unpatched xen-unstable, so I have no data for whether this patch
causes any regression for that particular test case. Anyone else''s
testing to verify no regression here would be appreciated as I improve
my test environments.
Please let me know what you think.
--
Andrew D. Ball
aball@us.ibm.com
"Festina Lente" $\approx$ "Make hast slowly"
-- Caesar Augustus
======================================================================Treat
xenstore UUID for domU''s like MAC addresses for virtual network
interfaces -- can be set by user in domU configuration, but is
generated randomly by default.
xm-test results:
http://xmtest.dague.org/cgi-bin/display?view=single&testid=1228
[These are for pristine changeset 8627. I see no difference between
these and the results for changeset 8627 with this patch applied.]
Signed-off-by: Andrew D. Ball <aball@us.ibm.com>
diff -r 9efe7eb108e1 -r 97aea0094880 tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py Wed Jan 4 17:51:38 2006
+++ b/tools/python/xen/xm/create.py Wed Jan 11 16:10:45 2006
@@ -395,6 +395,13 @@
gopts.var(''xauthority'', val=''XAUTHORITY'',
fn=set_value, default=None,
use="X11 Authority to use")
+
+gopts.var(''uuid'', val='''',
+ fn=set_value, default=None,
+ use="""xenstore UUID (universally unique identifier)
to use. One
+ will be randomly generated if this option is not set, just like MAC
+ addresses for virtual network interfaces. This must be a unique
+ value across the entire cluster.""")
def err(msg):
@@ -566,6 +573,8 @@
map(add_conf, [''name'', ''memory'',
''ssidref'', ''maxmem'',
''restart'',
''on_poweroff'',
''on_reboot'', ''on_crash'',
''vcpus''])
+ if vals.uuid is not None:
+ config.append([''uuid'', vals.uuid])
if vals.cpu is not None:
config.append([''cpu'', vals.cpu])
if vals.cpus is not None:
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