On 9/7/2011 7:10 PM, Justin Pettit wrote:
On Sep 7, 2011, at 5:29 PM, David Erickson wrote:
Is there a specific procedure for moving between OVS versions in XenServer?
I've done this a few times, and frequently I find myself in a situation where
the xenbr0 device has completely disappeared, and I couldn't find a way to
restore it other than re-installing Xen. In particular I believe I've had
success doing an rpm upgrade to newer Xen versions, however I think any time
I've removed the OVS rpm's to install an older version I've lost the xenbr0
instance. Any tips/suggestions are welcome.
Are you losing xenbr0 after you've done the uninstall and before the new install? If so,
you probably should switch the networking back-end to "bridge" before you do
the uninstall:
xe-switch-network-backend bridge
After you've done the install, switch it back to OVS:
xe-switch-network-backend vswitch
As you indicated, a pure RPM upgrade of OVS should work fine.
Let us know if I've misunderstood.
I was able to reproduce this. Starting with XenServer release
5.6.100-39215p and an installed version of OVS 1.2.1, I switched the
backend to bridge, rebooted, removed the OVS rpms, rebooted, installed
the original XS OVS rpm openvswitch-1.0.2-82.1943.i386.rpm, switched the
backend to openvswitch, rebooted, and xenbr0 was gone. Any ideas?
Thanks,
-David
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