Re: [Libvir] VIR_DOMAIN_NOSTATE
Daniel P. Berrange wrote:
What hypervisor version are you running. I'm struggling to see
the codepath
in the hypervisor 'getdomaininfo' call which could lead to domain_flags
being zero. AFAICT, as well as the HVM flags, there must always be at
least one other bit set.
This is opensolaris 81 with xen 3.1.2. Not having studied this code
extensively, I do see a path that could cause this:
flags starts out life as XEN_DOMINF_blocked
That flag then gets cleared in this marked line:
int flags = XEN_DOMINF_blocked;
for_each_vcpu ( d, v )
{
....
if ( !test_bit(_VPF_down, &v->pause_flags) )
{
if ( !(v->pause_flags & VPF_blocked) )
flags &= ~XEN_DOMINF_blocked; <-----here
if ( v->is_running )
flags |= XEN_DOMINF_running;
info->nr_online_vcpus++;
}
}
and then no bits are set in the next block.
Guarenteed either XEN_DOMINF_blocked or XEN_DOMINF_running is
set now.
And this next block, simply sets a few more bits
info->flags = flags |
((d->is_dying == DOMDYING_dead) ? XEN_DOMINF_dying : 0) |
(d->is_shut_down ? XEN_DOMINF_shutdown : 0) |
(d->is_paused_by_controller ? XEN_DOMINF_paused : 0) |
(d->debugger_attached ? XEN_DOMINF_debugged : 0) |
d->shutdown_code << XEN_DOMINF_shutdownshift;
if ( is_hvm_domain(d) )
info->flags |= XEN_DOMINF_hvm_guest;
This is all in getdomaininfo, from xen/common/domctl.c
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Russ Blaine | Solaris Kernel | russell.blaine(a)sun.com