[libvirt] [PATCH] qemu: include kernel version in QEMU log file

[Kashyap Chamarthy]

On Fri, May 18, 2018 at 08:16:39PM +0200, Kashyap Chamarthy wrote:
> On Fri, May 18, 2018 at 12:24:32PM +0100, Daniel P. Berrangé wrote:
> > We currently print the libvirt and qemu version strings into the
> > per-guest logfile. It would be useful to know what kernel is running
> > too, so add that.
> > 
> > Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> > ---
> >  src/qemu/qemu_process.c | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> I applied your patch and built libvirt locally; then I started my
> freshly-built libvirt, et al:

[...]

> When you start a guest with "sudo ./tools/virsh start cvm2", where will
> the per-guest log file go?  Is it even configurable?  I never tried this
> before.

[...]

> What am I missing?  I'm curious how you tested it.

Eric Blake on IRC reminded me that if I built with 'autogen.sh --system'
will, then the per-guest log should go to the standard location.

On my above compile, I didn't use '--system'; re-doing a fresh compile
with 'autogen.sh --system' indeed results in the Linux kernel version
being printed in the per-guest log, in the stndard location:

[...]
2018-05-18 18:52:15.725+0000: starting up libvirt version: 4.4.0, qemu version: 2.10.1(qemu-2.10.1-2.fc27), kernel: 4.14.16-300.fc27.x86_64 ...
[...]

FWIW:

    Reviewed-by and Tested-by: Kashyap Chamarthy <kchamart at redhat.com>

-- 
/kashyap