[libvirt] [PATCH 13/14] Add suspend info to Xen, LXC and UML hypervisor capabilities

[Daniel P. Berrange]

On Tue, Nov 29, 2011 at 09:56:43AM -0700, Eric Blake wrote:
> On 11/29/2011 08:44 AM, Daniel P. Berrange wrote:
> > From: "Daniel P. Berrange" <berrange at redhat.com>
> > 
> > * src/lxc/lxc_conf.c, src/uml/uml_conf.c,
> >   src/xen/xen_hypervisor.c: Initialize suspend capabilities
> > * tests/xencapsdata/*xml: Add empty powermgmt capabilities
> 
> Do we need to fake anything in the tests directory to ensure that the
> tests never probe the system, but always treat things as no power
> management available?  I'm worried that running the testsuite as root on
> a Dom0 host might cause spurious test failures, although I have not yet
> tested that.  I guess we can deal with the fallout later if it turns out
> to be a problem in practice.

Yes, I already made that mistake, and this patch ensures it does not
get run during test suites :-)

> > @@ -71,6 +73,9 @@ virCapsPtr lxcCapsInit(void)
> >          VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
> >      }
> >  
> > +    if (virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
> > +        VIR_WARN("Failed to get host power management capabilities");
> > +
> 
> For qemu, you skipped the warning for qemu:///session (ie. geteuid() was
> non-zero).  Should we do the same for lxc and uml, or are these
> hypervisors only ever useful as root?

Actually it doesn't fail for non-root - the commands for querying
supported PM features are fine to run as non-root.

Daniel
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