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Having a preassociate step to align with KVM migration prepare step helps 802.1qbh too. This helps with restoring network connectivity on source host if migration fails during the prepare step on destination host with our new 802.1qbh switches (Which is a bug we came across recently). With new changes in ieee 802.1qbh/bg spec, 802.1qbh will need to move to VDP eventually. To fix the migration issue Enic driver for Cisco VIC adapter(802.1qbh) will have support for PREASSOCIATE_RR soon. This bug fix will add PREASSOCIATE_RR request support during 802.1qbh port profile association
From their email, Cisco believes that they'll be able to make the code available by March 21.
Created attachment 486866 [details] Proposed patch for this bug Attached is the libvirt patch for this bug. The patch has not been posted upstream yet. Its waiting for enic (8021qbh) patches at https://bugzilla.redhat.com/show_bug.cgi?id=684865
Please don't wait to post upstream, the feedback there will be extremely useful even if it's not committed.
ok thanks. we were holding onto this patch because the corresponding enic patch for 802.1qbh is not out yet. I went ahead and posted the patch upstream just now: https://www.redhat.com/archives/libvir-list/2011-March/msg01034.html Thanks dave.
Stefan has pushed the patch upstream. http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=7708da38c7b58034bc792a387527f06a85ef83c7 Note that this patch has a dependency on bug https://bugzilla.redhat.com/show_bug.cgi?id=684865 for rhel 6.1
Posted: http://post-office.corp.redhat.com/archives/rhvirt-patches/2011-March/msg00681.html
This is not a real FutureFeature, it fixes a migration bug, though by making use of a new request.
Hi CISCO , Would you please update your pkgs to the version under http://veillard.com/libvirt/6.1/x86_64/ . And try if the bug is fixed already . Thanks Vivian Bian
~~ Partners and Customers ~~ This bug was included in RHEL 6.1 Beta. Please confirm the status of this request as soon as possible. If you're having problems accessing 6.1 bits, are delayed in your test execution or find in testing that the request was not addressed adequately, please let us know. Thanks!
Download libvirt-0.8.7-18.el6.src.rpm, and libvirt-8021Qbh-use-preassociate-rr-during-the-migration-prepare-stage.patch can be found in /root/rpmbuild/SOURCES. and no critical regression and blocker was introduced in the latest build for migration.
Checked the libvirt src rpm on rhel 6.1 snap5. Pls consider this bug verified. Thanks
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0596.html