Re: [Qemu-devel] [PATCH 0/2] nbd server: drop old-style negotiation

[Richard W.M. Jones]

On Thu, Oct 04, 2018 at 12:10:17PM +0000, Vladimir Sementsov-Ogievskiy wrote:
> this is a bit more difficult and more overhead than option in Qemu.. But 
> I don't sure we should care about

I think Eric's point is that dropping oldstyle in qemu-nbd isn't
really a problem because nbdkit has no plans to drop oldstyle.  So
there will remain a path for very old clients to keep working (whether
using nbdkit natively, or using nbdkit to proxy to qemu-nbd).  Eric's
example used the more complex proxy case.  By contrast the nbdkit
native case is very simple:

  nbdkit -o file disk.img

(where the ‘-o’ flag switches to oldstyle protocol).

Rich.

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