[pve-devel] [PATCH ha-manager 3/5] scheduling: make static scheduling optional

[Fabian Grünbichler]

Quoting Daniel Kral (2025-09-23 11:23:42)
> On Mon Sep 22, 2025 at 2:04 PM CEST, Fabian Grünbichler wrote:
> > it's not available in the simulator
> >
> > Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
> > ---
> >  src/PVE/HA/Manager.pm | 21 +++++++++++++++------
> >  1 file changed, 15 insertions(+), 6 deletions(-)
> >
> > diff --git a/src/PVE/HA/Manager.pm b/src/PVE/HA/Manager.pm
> > index ba59f64..cfd509a 100644
> > --- a/src/PVE/HA/Manager.pm
> > +++ b/src/PVE/HA/Manager.pm
> > @@ -14,7 +14,12 @@ use PVE::HA::Rules::NodeAffinity qw(get_node_affinity);
> >  use PVE::HA::Rules::ResourceAffinity
> >      qw(get_affinitive_resources get_resource_affinity apply_positive_resource_affinity apply_negative_resource_affinity);
> >  use PVE::HA::Usage::Basic;
> > -use PVE::HA::Usage::Static;
> > +
> > +my $have_static_scheduling;
> > +eval {
> > +    require PVE::HA::Usage::Static;
> > +    $have_static_scheduling = 1;
> > +};
> >  
> >  ## Variable Name & Abbreviations Convention
> >  #
> > @@ -244,11 +249,15 @@ sub recompute_online_node_usage {
> >  
> >      if (my $mode = $self->{crs}->{scheduler}) {
> >          if ($mode eq 'static') {
> > -            $online_node_usage = eval {
> > -                my $scheduler = PVE::HA::Usage::Static->new($haenv);
> > -                $scheduler->add_node($_) for $online_nodes->@*;
> > -                return $scheduler;
> > -            };
> > +            if ($have_static_scheduling) {
> > +                $online_node_usage = eval {
> > +                    my $scheduler = PVE::HA::Usage::Static->new($haenv);
> > +                    $scheduler->add_node($_) for $online_nodes->@*;
> > +                    return $scheduler;
> > +                };
> > +            } else {
> > +                $@ = "static scheduling not available\n";
> > +            }
> 
> Since this cropped up almost 3 years after the static load scheduler was
> added and the GTK-based ha-simulator might be on its way out already
> [0], I think it would be nice to add a stub for
> PVE::HA::Usage::Static here the same way as you did for PVE::Cluster as
> otherwise it clutters the main code for the rather rarely used
> standalone ha-simulator.
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=6743

yes, that's definitely doable and should just require a `new()` implementation
that dies, so fairly simple..