Comment 3 for bug 1005616

We patched the vif script in dom0.

On Thu, Jul 12, 2012 at 7:42 PM, Salvatore Orlando <
<email address hidden>> wrote:

> Armando, do you recall how we sorted this issue last time we looked at
> it?
>
> ** Changed in: quantum
> Assignee: (unassigned) => Salvatore Orlando (salvatore-orlando)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1005616
>
> Title:
> Windows instances may not get correct port configuration as set by
> quantum
>
> Status in OpenStack Quantum (virtual network service):
> Confirmed
>
> Bug description:
> Typically Windows instances go through a sysprep configuration that
> may mean that the instance goes through a number of reboots before
> being fully up and running.
>
> In one of my deployments (XenServer-based) I have experienced that the
> command issued by ovs_quantum_agent gets wiped out while the VM is
> boostrapping. Below you'll find an example of the chain of events I
> saw:
>
> 1) May 27 22:02:27 comp-3-6 ovs-vsctl: 00001|vsctl|INFO|Called as
> /usr/bin/ovs-vsctl --timeout=30 -- --if-exists del-port vif103.0 --
> add-port xapi2 vif103.0 -- set interface vif103.0 "external-ids:\"xs-
> vm-uuid\"=\"8d547a8b-429a-7729-6f2a-f01777659e16\"" -- set interface
> vif103.0 "external-ids:\"xs-vif-uuid\"=\"dc7c30ec-9cd0-eb62-d0fa-
> 9e76cfc75e98\"" -- set interface vif103.0 "external-ids:\"xs-network-
> uuid\"=\"bebf9442-9791-67f8-ced0-7751ccfa1306\"" -- set interface
> vif103.0 "external-ids:\"attached-mac\"=\"fa:16:3e:10:0a:b2\""
>
> 2) May 27 22:02:28 comp-3-6 ovs-vsctl: 00001|vsctl|INFO|Called as ovs-
> vsctl --timeout=2 set Port vif103.0 tag=2100
>
> 3) May 27 22:02:49 comp-3-6 ovs-vsctl: 00001|vsctl|INFO|Called as
> /usr/bin/ovs-vsctl --timeout=30 -- --if-exists del-port vif103.0 --
> add-port xapi2 vif103.0 -- set interface vif103.0 "external-ids:\"xs-
> vm-uuid\"=\"8d547a8b-429a-7729-6f2a-f01777659e16\"" -- set interface
> vif103.0 "external-ids:\"xs-vif-uuid\"=\"dc7c30ec-9cd0-eb62-d0fa-
> 9e76cfc75e98\"" -- set interface vif103.0 "external-ids:\"xs-network-
> uuid\"=\"bebf9442-9791-67f8-ced0-7751ccfa1306\"" -- set interface
> vif103.0 "external-ids:\"attached-mac\"=\"fa:16:3e:10:0a:b2\""
>
> 1 and 3 are issued by the vif script in /etc/xensource/scripts/vif and
> 2 is issued by the quantum agent; xapi2 is my integration-bridge,
> vif103.0 is my Windows VM's vif.
>
> Not sure how easy to reproduce this is, but the conclusion is: the
> ovs_quantum_agent may need to periodically re-apply configuration of
> the ports it knows about, because other system entities may interfere
> with it.
>
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>