bug#54447: cuirass: missing derivation error

[Ludovic Courtès]

Ludovic Courtès <ludo@gnu.org> skribis:

> Turns out that ‘cleanup-cuirass-roots’ in maintenance.git, used as an
> mcron job, explicitly removes GC roots for things like *-os-encrypted
> once they’re more than two days old, as well as GC roots for the
> corresponding .drv.
>
> I think this was increasing the likelihood that a .drv would be GC’d by
> the time we run the test: under high load¹, it’s plausible that a system
> test wouldn’t be built within two days after it’s been queued.
>
> I’m proposing the change below to address this; I don’t think we need
> ‘--gc-keep-outputs --gc-keep-derivations’ anymore now that we keep
> things in ‘guix publish’ cache first and foremost.

I pushed a variant of this patch:

  053839d hydra: services: Leave “guix-binary.tar.xz” GC roots.
  e40d961 hydra: services: Preserve Cuirass .drv GC roots.
  b8fc66c hydra: cuirass: Fix build product regexps.

I didn’t dare remove “--gc-keep-derivations”.  I reconfigured berlin
just now from this commit and restarted mcron (I didn’t restart
guix-daemon to avoid downtime; we should do that when the queue is close
to empty).

We’ll have to monitor disk usage to make sure it’s not negatively
affected.

Ludo’.