[Sunhelp] "Mirroring" two directories over the net. Info please.

Jarrett m Carver AFcarjm at dia.osis.gov
Tue Aug 3 07:09:58 CDT 1999


    I know that volumn manager and the sparc storage arrays allow you to
configure two systems to use the same storage array. I have'nt looked into the
set-up you are talking about, but it may be possible.   (provided you are using
storrage arrays and the two servers are close enough to connect them both to one
storage array.) This would be more of a network mirroring.

We use RSYNC here to update our back up web server, however it run on a crontab
every night, so it is not mirroring o the extent that until the crontab is run
the info will be out of sync. This will all depend on how volitile and time
sensitive you info is.

Rob Staab wrote:

> The other problem being that tar will bomb out after 2.1 gig. :(
>
>                            Robert Staab
>
> On Sun, 1 Aug 1999, Adrian Petrescu wrote:
>
> > The only problem with tar [...] | tar [...] is that it will take couple of
> > hours to complete for the amount of data I have in the directory (> 25 GB
> > for a single machine, and there are 3 sets I want to implement).
> >
> > I'm going to check on samba site. Thank you.
> >
> > Regards,
> > Adrian
> >
> > ------Original message-------
> > From: Doug McLaren <dougmc at frenzy.com>
> > Reply-To: sunhelp at sunhelp.org
> > To: sunhelp at ohno.mrbill.net
> > Subject: Re: [Sunhelp] "Mirroring" two directories over the net. Info
> > please.
> > Date: Mon, 2 Aug 1999 00:58:25 -0500
> > MIME-Version: 1.0
> > >From sunhelp-admin at ohno.mrbill.net Sun Aug 01 23:01:33 1999
> > Received: from [198.214.131.15] by hotmail.com (2.1) with ESMTP id
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> > 00:57:19 -0500 (CDT)
> > Received: from algol.frenzy.com (root at cs2885-30.austin.rr.com
> > [24.28.85.30])by ohno.mrbill.net (8.9.3/8.9.3) with ESMTP id AAA07760for
> > <sunhelp at ohno.mrbill.net>; Mon, 2 Aug 1999 00:57:11 -0500 (CDT)
> > Received: (from dougmc at localhost)by algol.frenzy.com (8.8.7/8.8.7) id
> > AAA09505for sunhelp at ohno.mrbill.net; Mon, 2 Aug 1999 00:58:25 -0500
> > Message-ID: <19990802005825.A6538 at algol.frenzy.com>
> > References: <19990802030356.93824.qmail at hotmail.com>
> > X-Mailer: Mutt 0.93.2
> > In-Reply-To: <19990802030356.93824.qmail at hotmail.com>; from Adrian Petrescu
> > on Sun, Aug 01, 1999 at 08:03:56PM -0700
> > X-Zippy: NOT fucking!! Also not a PACKAGE of LOOSE-LEAF PAPER!!
> > Sender: sunhelp-admin at sunhelp.org
> > Errors-To: sunhelp-admin at sunhelp.org
> > X-Mailman-Version: 1.0rc3
> > Precedence: bulk
> > List-Id: General discussion / help / chat about Sun machines and software
> > <sunhelp.sunhelp.org>
> > X-BeenThere: sunhelp at sunhelp.org
> >
> > On Sun, Aug 01, 1999 at 08:03:56PM -0700, Adrian Petrescu wrote:
> >
> > | Is there any kind of "tool" to help me to create a mirror of a directory
> > | (file system) located on an UNIX box to another directory (file system) on
> > a
> > | different UNIX box over the net ?
> >
> > The one shot method :
> >
> >     tar -cf - . | rsh host 'cd /whatever ; tar -xpvvf -'
> >
> > (replace rsh with ssh if that's what turns your crank.)
> >
> > If you want to automate it and make it efficient, you may want to look
> > into rsync, available at ftp://samba.anu.edu.au/pub/rsync.
> >
> > Of course there's a dozen other answers to this question, but these
> > two will usually do quite nicely.
> >
> > --
> > Doug McLaren, dougmc at frenzy.com
> >
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--
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Jarrett Carver                            DIA OSIS System Administrator
Re:AFcarjm at dia.osis.gov                   CC:admin at dia.osis.gov

"The opinions expressed herein are not necessarily those of my employer,
 not necessarily mine, and probably not necessary."

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