Re: msgr2 protocol

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On Sat, 4 Jun 2016, Haomai Wang wrote:
> On Fri, Jun 3, 2016 at 9:24 PM, Sage Weil <sweil@xxxxxxxxxx> wrote:
> > I updated the PR with an additional commit that simplifies the
> > confounder.  It seems like we only need the confoudner at teh beginning of
> > the session, not for every message, since the signature and encryption
> > state is chained from the previous frame.  Is that right?
> >
> >         https://github.com/ceph/ceph/pull/9461/commits/45766fed1864733c5216a7b50f11cce256338170
> >
> > Full PR:
> >
> >         https://github.com/ceph/ceph/pull/9461
> >
> > --
> >
> > Also, I just realized that now might be a good time to address the ability
> > to multiplex different endpoints (sessions) into the same connection.  We
> > could add it later with the msgr feature bits, but it'll probably be
> > simpler not to have to support two variants of the protocol.  On the other
> > hand, it's a lot more complicated.  :(
> 
> What's the use case? different session shares the same connection? Do
> you mean different messenger instance will share the same connection
> pool?

Many OSD's in the same unix process, sharing the same messenger connection 
pool, eventually using SPDK/DPDK.

sage
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