netdev - Re: [PATCH v6 00/11] remove msize limit in virtio transport

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Message-ID: <YtKm4M8W+rL+buNj@codewreck.org>
Date:   Sat, 16 Jul 2022 20:54:08 +0900
From:   Dominique Martinet <asmadeus@...ewreck.org>
To:     Christian Schoenebeck <linux_oss@...debyte.com>
Cc:     v9fs-developer@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        Nikolay Kichukov <nikolay@...um.net>
Subject: Re: [PATCH v6 00/11] remove msize limit in virtio transport

Christian Schoenebeck wrote on Sat, Jul 16, 2022 at 11:54:29AM +0200:
> > Looks good to me, I'll try to get some tcp/rdma testing done this
> > weekend and stash them up to next
> 
> Great, thanks!

Quick update on this: tcp seems to work fine, I need to let it run a bit
longer but not expecting any trouble.

RDMA is... complicated.
I was certain an adapter in loopback mode ought to work so I just
bought a cheap card alone, but I couldn't get it to work (ipoib works
but I think that's just the linux tcp stack cheating, I'm getting unable
to resolve route (rdma_resolve_route) errors when trying real rdma
applications...)

OTOH, linux got softiwarp merged in as RDMA_SIW which works perfectly
with my rdma applications, after fixing/working around a couple of bugs
on the server I'm getting hangs that I can't reproduce with debug on
current master so this isn't exactly great, not sure where it goes
wrong :|
At least with debug still enabled I'm not getting any new hang with your
patches, so let's call it ok...?

I'll send a mail to ex-collegues who might care about it (and
investigate a bit more if so), and a more open mail if that falls
short...

--
Dominique