Re: Stopping and restarting poudriere

bob prohaska <fbsd_at_www.zefox.net> wrote on
Date: Tue, 8 Jun 2021 07:56:24 -0700 :

> Is it possible to  restart a poudriere build session so it picks up
> where it left off?
> 
> I mistakenly hit a control-c in the controlling terminal of a long
> build and would like to restart it with minimum lost work.

Packages that had already built and been put in the .building
temporary repository that it uses will not be rebuilt if I
remember right: the ones from that repository will be reused
at the next bulk (re)run. (Presumes same options in use, for
example.)

But the ports that had running jails will be rebuilt from the
start, not from an intermediate state.

> More generally, can a poudriere session be gracefully stopped,
> say for maintenance work or to run a more urgent job, and then 
> restarted without loss of intermediate work?

I've never tried a ^Z (to cause Suspended). My guess is that
it would be disabled. If it was enabled, I doubt it would
be propagated to the running jails. (Similar issue for a
later fg.) Suspending and resuming a bunch of jails (that
are not independent overall) in a coherent manor would
likely be far from trivial. (Really kill -s STOP pid . . .
and kill -s CONT pid . . . use implicitly.)

I also have never tried using nice or renice with poudriere.
But this would seem more likely to work usefully, at least
nice. (But nice does not do as much as you indicate that
you want: the activity would just be at a lower priority
for scheduling.)


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)