[Gluster-devel] GlusterFS (network) messaging layer - possible next steps

[Kaleb S. KEITHLEY]

It's not packaged in Fedora. There have been two attempts, in 2013 and
2014; https://bugzilla.redhat.com/show_bug.cgi?id=1012392 and
https://bugzilla.redhat.com/show_bug.cgi?id=1123511 respectively.

It is packaged in Debian.


On 08/31/2015 11:41 AM, Jeff Darcy wrote:
>> nanomsg wouldn't be an easy drop in replacement to our existing messaging
>> infrastructure. We need to understand how our code would be structured if we
>> decide to use nanomsg. I am considering the Go implementation of nanomsg
>> (protocol) called mangos[3] for inter-GlusterD communication in GlusterD 2.0.
>> I will be sharing our experience when we get there. Meanwhile, please share
>> what you think about this.
> 
> As I've written elsewhere, I believe it would be a good thing to get away
> from our current (XDR) serialization format/method.  Replacing the next
> level up - managing connections, detecting when they break, etc. - is a
> bit trickier.  One issue there is what to do about RDMA.  Another is that
> the rest of our code makes a lot of assumptions (many implicit) about
> things like event ordering and parallelism levels.  It has proven fragile
> even with modest changes in this area (e.g. SSL/TLS), and would probably
> be even more so in the face of greater change.
> 
> That said, I did actually look into nanomsg a while ago (mostly for NSR
> internal communication).  It did look like one of the better alternatives
> in its space, and might be a good fit for GlusterD specifically.  There's
> no reason GlusterD needs to use the same networking infrastructure as the
> I/O path, just like there's no reason it needs to use the same translator
> infrastructure.  Since it does reduce our own burden on maintaining the
> current networking code for both I/O path and GlusterD usage (which are
> quite different) and does offer some more powerful abstractions that we
> could use, I would definitely encourage further investigation in this
> area.
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-- 

Kaleb