Re: [Burp-users] backup_script_pre says waitpid error: No child processes

[Mark N. <mar...@gm...>]

Hi Graham,

Thank you for the swift reply.

I have tried adding a 10 and 20 seconds sleep time (good idea by the way),
but it still fails

2011-09-23 14:40:09: burp[14605] pre sleep
2011-09-23 14:40:19: burp[14605] child pid 14606 exited
2011-09-23 14:40:19: burp[14605] post sleep
2011-09-23 14:40:19: burp[14605] /usr/local/bin/burp-pre-backup.sh waitpid
error: No child processes
2011-09-23 14:40:19: burp[14605] error in backup



Thanks,

Mark


On Fri, Sep 23, 2011 at 11:57 AM, Graham Keeling <ke...@sp...>wrote:

> Oops... I didn't send my reply to the list. Here it is again.
>
> On Fri, Sep 23, 2011 at 11:18:14AM +0200, Mark Nellemann wrote:
> > Hi,
> >
> > Great piece of software. Easy to setup and does what it's supposed to do,
> > thanks!
>
> Thanks for the nice feedback. :)
> Suggestion below...
>
> > I'm trying to run a backup_script_pre script, but I get the following
> error;
> >
> > # burp -a b
> > 2011-09-23 11:15:40: burp[7360] Listing configured paths:
> > 2011-09-23 11:15:40: burp[7360] include: /etc
> > 2011-09-23 11:15:40: burp[7360] include: /home
> > 2011-09-23 11:15:40: burp[7360] include: /usr/local
> > 2011-09-23 11:15:40: burp[7360] include: /var/backups
> > 2011-09-23 11:15:40: burp[7360] include: /var/spool/cron
> > 2011-09-23 11:15:40: burp[7360] Listing starting paths:
> > 2011-09-23 11:15:40: burp[7360] /etc
> > 2011-09-23 11:15:40: burp[7360] /home
> > 2011-09-23 11:15:40: burp[7360] /usr/local
> > 2011-09-23 11:15:40: burp[7360] /var/backups
> > 2011-09-23 11:15:40: burp[7360] /var/spool/cron
> > 2011-09-23 11:15:40: burp[7360] before client
> > 2011-09-23 11:15:40: burp[7360] begin client
> > 2011-09-23 11:15:40: burp[7360] auth ok
> > 2011-09-23 11:15:40: burp[7360] Compression level: 9
> > 2011-09-23 11:15:40: burp[7360] child pid 7361 exited
> > 2011-09-23 11:15:40: burp[7360] /usr/local/bin/burp-pre-backup.sh waitpid
> > error: No child processes
> > 2011-09-23 11:15:40: burp[7360] error in backup
> > 2011-09-23 11:15:40: burp[7360] after client
> >
> > My script contains;
> >
> > #!/bin/sh
> > exit 0
> >
> > Am I supposed to return something other than zero ?
> > Any feedback is greatly appreciated.
>
> I first suspect that there might be a race condition there.
> Burp is forking a child process, then waiting for it to exit. But it
> already
> exited before it got round to waiting for it, so it thinks there was an
> error.
>
> You could determine the truth of this by putting a sleep in your script,
> for
> example:
>
> #!/bin/sh
> sleep 5
> exit 0
>
> If this gets rid of your error, you will have a workaround, and I will
> think
> about how to get rid of the race condition in some future release. Let me
> know what happens.
>
>
>
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-- 
Mark N.