On Fri, Nov 27, 2009 at 09:26:26AM -0500, Jeffrey J. Kosowsky wrote:
> > > As many know, I use rsync in DumpPreUserCmd to run my shadowmountrsync
> > > routine on the remote client. This routine has many legitimate reasons
> > > for not returning success.
> > >
> > > However, the backuppc log often shows on failure:
> > > 2009-11-24 11:00:04 DumpPreUserCmd returned error
> status 512... exiting
> > >
> > > I don't understand the 512 status since the rsync man pages lists
> > > return codes as 0-35. So what does 512 mean?
> >
> > It's 256 * exitStatus, so the exit status is 2. The lower 8 bits are
> > the signal number, if any, that killed the process.
>
> Thanks Craig...
>
> So, I guess if I want to return the exit code of the remote process I
> am running (shadowmountrsync) then I should have shadowmountrsync
> write the exit code to stdout. Then capture that as the output of the
> remote rsync command and return it.
I'm not familiar with how you call the script, but ssh does pass back
the exit codes:
> ssh $server /bin/true && echo jo
jo
> ssh $server /bin/false && echo jo
>
And if you're concerned about your remote script catching some exit
code, it works like this:
$somecommand
saved_exitcode=$?
...
exit $saved_exitcode
Maybe you're talking about Windows - there should be a way as well to
catch the exit code of the last command.
> Which brings to mind a suggestion...
> Why not execute these commands in a shell.
> They are not run that frequently (once per day per host) so the
> overhead of launching a shell would be low while the benefit would be
> high in terms of flexibility.
Then you open the "how to escape things correctly when passing them to a
shell" box.
HTH,
Tino.
--
"What we nourish flourishes." - "Was wir nähren erblüht."
www.lichtkreis-chemnitz.de
www.tisc.de
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