Thanks a lot Jesse! I will have a try. Tianpeng
2013/3/31 Jesse Gross <je...@nicira.com> > On Fri, Mar 29, 2013 at 11:36 PM, Tianpeng Zhang (Gmail) > <tianpeng0...@gmail.com> wrote: > > Yes, from following trace, DRBD and OVS block each other and enter into > > deadlock. > > It seems someone sent a patch years ago to refine genl global lock as > family > > granularity. So change the DRBD or OVS's genl family to different ones > may > > fix this problem? > > genl mutex does need to be broken down but DRBD and OVS are already in > different families so that won't help. However, the fact that DRBD is > holding a global lock while sending packets on the network (and > waiting for a response) seems very bad to me. > > This patch might be a start if you want to take a look: > http://openvswitch.org/pipermail/dev/2012-June/017688.html >
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