[libvirt] [sandbox 1/6] Pass debug and verbose values to init

[Daniel P. Berrange]

On Wed, Dec 06, 2017 at 01:56:23PM +0100, Cedric Bosdonnat wrote:
> On Tue, 2017-12-05 at 16:52 +0000, Daniel P. Berrange wrote:
> > On Tue, Dec 05, 2017 at 10:53:17AM +0100, Cédric Bosdonnat wrote:
> > > libvirt-sandbox-init-common is expecting -d and -v parameters to
> > > set it in debug or verbose mode... but those will never be passed
> > > by the launcher program.
> > 
> > Hmm, libvirt-sandbox-init-{qemu,lxc} both know how to pass -d
> > to init-common.  If either of the virt specific init programs
> > are in debug mode (as indicated by the word "debug" in kernel
> > command line or equiv), then they pass -d to init-common.
> 
> Hum, then I should surely revise that commit to remove the debug-related
> code. Instead I should change the init-{lxc,qemu} to actually pass
> the debug flag to init-common.
> 
> > You're right that there's no way to pass -v though.
> > 
> > Also, it might be useful to run init-common in debug mode
> > without the virt specific init being in debug mode, to avoid
> > drowning in debug.
> 
> Hum, then keeping the debug-related flag I introduced could help,
> but then I'll need to rename it to make it more explicit. Or maybe
> I should change the debug parameter to take a level value:
>  0: all (default)
>  1: only the init-common

I'm not a fan of adding  args to --debug flags. I think what you
have here already is good enough, just with commit message changed
to be more accurate

> 
> In which case the user-exposed options should be expanded to use these.
> 
> I'll push the other commits, but not this one.
> 
> --
> Cedric
> 
> > > 
> > > Writing the core.debug and core.verbose parameters in the sandbox
> > > configuration makes those values actually usable from the init.
> > > ---
> > >  bin/virt-sandbox.c                            |  3 ++
> > >  libvirt-sandbox/libvirt-sandbox-config.c      | 75 +++++++++++++++++++++++++++
> > >  libvirt-sandbox/libvirt-sandbox-config.h      |  6 +++
> > >  libvirt-sandbox/libvirt-sandbox-init-common.c |  3 ++
> > >  libvirt-sandbox/libvirt-sandbox.sym           |  4 ++
> > >  5 files changed, 91 insertions(+)
> > 
> > Reviewed-by: Daniel P. Berrange <berrange at redhat.com>
> > 
> > if the commit message is fixed

Regards,
Daniel
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