On milano-guix-1 (a build machine behind bayfront, running shepherd
0.10.2), ‘herd status’ and ‘herd status guix-build-coordinator-agent’
would hang (there’s no ‘guix-build-coordinator’ process running).
‘herd stop childhurd2’ hangs and has no effect.
Conversely, ‘herd status nscd’ and similar for most other services works
fine. When terminating a service’s process, the service gets respawned
The conclusion seems to be that the control fiber of the ‘root’ service
is not responding: it is blocked on a get/put? did it exit?
Unfortunately we don’t have data from the logs that would give clues as
to what went wrong.