Re: [PATCH] nbd-server: Silence server warnings on port probes

[Eric Blake]

On Mon, Nov 18, 2024 at 11:08:51AM -0600, Eric Blake wrote:
> On Fri, Nov 15, 2024 at 01:55:53PM -0600, Eric Blake wrote:
> > While testing the use of qemu-nbd in a Pod of a Kubernetes cluster, I
> > got LOTS of log messages of the forms:
> > 
> > qemu-nbd: option negotiation failed: Failed to read flags: Unexpected 
> > end-of-file before all data were read
> > qemu-nbd: option negotiation failed: Failed to read flags: Unable to read 
> > from socket: Connection reset by peer
> > 

> In testing this as a potential candidate for -rc1, I'm seeing iotests
> failures in `./check 094 119 -nbd` both pre- and post-patch.
> Bisecting now to see if I can find where those tests started
> regressing (looks like a timing change; a "return" line is swapping
> place with a SHUTDOWN event line in the QMP output).

Huh - I'm seeing those same two tests fail on a vanilla v0.9.0
checkout; therefore, this is probably a long-standing regression, and
certainly not something introduced by this patch.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.
Virtualization:  qemu.org | libguestfs.org