Run upstart job exclusively or before upstart process

Rogerio Vinhal Nunes rogeriov at syst.com.br
Fri May 11 18:30:52 UTC 2012


The startup-event worked fine, thanks! :)

2012/5/10 James Hunt <james.hunt at ubuntu.com>

> On 10/05/12 17:24, Rogerio Vinhal Nunes wrote:
> > I'm already doing the start on starting mountall, but while the job is
> copying the directory some
> > other jobs are processing. I don't know why, but when I do that the
> system simply stops (possibly
> > triggers a deadlock) and after 2 minutes it says that the task modprobe
> is not responding for 120
> > seconds.
> >
> > I figured that this task might be the module-init-tools, so I did:
> >
> > start on (starting mountall or starting module-init-tools)
> >
> > With that the system stops locking, but strangely my job runs twice. Is
> that expected?
> Yes:
> http://upstart.ubuntu.com/cookbook/#run-a-job-for-all-of-a-number-of-conditions
>
> The way to have your job start before *any* other is to use 'and' and
> specify all the jobs that
> 'start on startup'. To determine that list of jobs:
>
> initctl show-config -e|egrep -v "\<emits\>"|grep -B1 "  start on
> startup"|egrep -v "(start on|^--)"
>
> However it might be easier and simpler to start your system with Upstart
> by adding the following to
> the kernel command-line:
>
>  --startup-event=foo
>
> ...and then having your job do:
>
>  start on foo
>  emits startup
>
>  script
>    # copy /var here.
>  end script
>
>  post-stop script
>    # kick off the rest of the system
>    initctl emit startup
>  end script
>
> This is in fact essentially what friendly-recovery does in recent versions
> on Ubuntu.
>
> See: http://upstart.ubuntu.com/cookbook/#command-line-options
>
> Kind regards,
>
> James.
> --
> James Hunt
> ____________________________________
> http://upstart.ubuntu.com/cookbook
> http://upstart.ubuntu.com/cookbook/upstart_cookbook.pdf
>
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