Bennett,
Thanks! I stole the fork/open/wait stuff from your multicmd program
(and from similar suggestions from Martin and James) and it works
great!
eric
(happily rsyncing/logging to multiple hosts in parallel)
Bennett Todd wrote:
>
> 2000-09-20-22:53:53 Eric Whiting:
> > I have used the shell redirection stuff to capture stdout/stderr from
> > programs. But this time I'm trying to do a parallel rsync from a single
> > server to multiple clients all at the same time. The server has 2G RAM
> > and can handle the concurrent rsyncs.
> >
> > My problem is probably a perl programming problem and not a rsync one,
> > but the 'log' feature in rsync would help me a lot.
>
> It's really easy to do this from perl.
>
> > The perl 'open' command is really a popen system call that starts
> > a child process to handle the rsync.
>
> That's actually an oversimplification, perl's open() builtin can do
> forks, execs, file descriptor rearranging, popen, plain file opens,
> all kinds of goo.
>
> > The reason I wanted to use the rsync logfile feature is it seems the
> > children and parent all share the same stdout and the individual '>>'s
> > don't catch the right output. If I start a parallel rsync to 8 hosts,
> > all the stdout gets mangled.
>
> It's really easy to redirect them just re-open the descriptors onto
> files in a child process.
>
> I attach the multicmd script I've been using for some years now for
> running programs in parallel; it has an option to route the stdout
> and stderr from each child into a separate logfile.
>
> -Bennett
> (See attached file: multicmd)
>
> ----------------------------------------------------------------------
> Name: multicmd
> multicmd Type: unspecified type (application/octet-stream)
> Encoding: base64
--
__________________________________________________________________
Eric T. Whiting AMI Semiconductors
(208) 234-6717 2300 Buckskin Road
(208) 234-6659 (fax) Pocatello,ID 83201
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