Re: [Qemu-devel] [PATCH] tests: vm: auto_install OpenBSD

[Peter Maydell <peter.maydell@linaro.org>]

On 24 August 2018 at 09:52, Fam Zheng <famz@redhat.com> wrote:
> On Fri, 08/24 09:22, Daniel P. Berrangé wrote:
>> On Fri, Aug 24, 2018 at 09:21:26AM +0800, Fam Zheng wrote:
>> > Upgrade OpenBSD to 6.3 using auto_install. Especially, drop SDL1,
>> > include SDL2.
>> >
>> > One limitation of this patch is that we need a temporary HTTP server on
>> > host 80 port for auto_install, because slirp cannot do guest forward on
>> > "host addr".
>>
>> That's a pretty big limitation, as port 80 requires root privileges,
>> and that's a pretty strict no for automated testing IMHO.
>>
>> Why does it have to be port 80 in particular - is it not possible
>> to use 8080 or even better, detect a random free port ?
>
> OpenBSD autoinstall[1] is hardcoded to fetch from port 80. Maybe we can instead
> persuade it into fetching from a different http server than 10.0.2.2. To do that
> we'd need to implement a new slirp option for either "option tftp-server-name"
> or "next-server" according to the manpage. I'll have to experiment with it to
> see if it will work.

Can you use the usermode networking "guestfwd" option to make guest
tcp connections to wherever:80 go to host:8080 or something instead?
(watch out for https://bugs.launchpad.net/qemu/+bug/1628971 if it
is still relevant, I guess).

thanks
-- PMM