2016-04-26 9:08 GMT-07:00 Traynor, Kevin <kevin.tray...@intel.com>: > > -----Original Message----- > > From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of > > Kochba, Alon > > Sent: Tuesday, April 26, 2016 4:38 PM > > To: Ben Pfaff <b...@ovn.org>; Yi Ba <yby.develo...@yahoo.com> > > Cc: b...@openvswitch.org > > Subject: Re: [ovs-discuss] ovs get stuck when running traffic from VM > > to VM on same compute > > > > Hi Ben, > > > > Could you point us to the commit that fixed this issue? > > We already tried patching with this commit which seemed relevant, but > > the issue still recreated - > > https://github.com/openvswitch/ovs/commit/f519a72d9a3708fbc5f796f176e7 > > c8bd3dcfb738 > > > > We will retry with your suggestion of using the 2.5 branch code, but > > we might want to backport the specific fix unless there is a 2.5.1 > > release including it. > > If the commit linked above is the one you were thinking of, please > > note a small difference - in the commit the rcu is blocked waiting for > > vhost_thread to quiesce, while in our case rcu is blocked waiting for > > pmd to quiesce. > > It sounds similar to the problem that this commit fixed. If so the fix > is applied to master and 2.5 branches. > > > https://github.com/openvswitch/ovs/commit/61c4e39460a7db3be7262a3b2af767a84167a9d8 >
Could you try applying the above commit and see if it fixes the problem? If you manage to reproduce the problem, could you get a backtrace of the blocked thread (pmd101 in this case)? Thanks, Daniele
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