Date: Fri, 23 Jun 2006 20:54:07 -0700 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: "Dan Nelson" <dnelson@allantgroup.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: help with 'tar|rsh tar' Message-ID: <ef10de9a0606232054lde0552dv38ecee1a50f2b5b9@mail.gmail.com> In-Reply-To: <20060624023139.GA83209@dan.emsphone.com> References: <ef10de9a0606231834w4e286e90u4027ff6f0835131c@mail.gmail.com> <20060624023139.GA83209@dan.emsphone.com>
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On 6/23/06, Dan Nelson <dnelson@allantgroup.com> wrote: > In the last episode (Jun 23), Nikolas Britton said: > > I need to backup the /data directory on hostA to /data on hostB, > > about 1TB of data on a gigabit link. Right now I'm using scp but the > > handshake latency and ssh overhead is killing me. > > > > I've looked at many examples of tar|rsh tar and I can't figure it out, > > most of the examples on the net look like this: > > # tar cf - . | rsh hostname dd of=tape-device obs=20b > > # tar -cf -...|rsh ...tar xf -... > > Two quick options even more lightweight than rsh are netcat (base > system) and ttcp (in ports). Usage examples: > > host2$ ttcp -r | tar xvf - > host1$ tar cf - . | ttcp -t host2 > > host2$ nc -l 1234 | tar xvf - > host1$ tar cf - . | nc host2 1234 > Thanks!, but I got rsh going. I first had to edit /etc/hosts.equiv, after that I figured it out: tar cf - . | rsh 192.168.1.242 'cd /data; tar xpvf -' I was thinking tar -f as in file.tar but it's not, you have to cd into the source directory you want to copy... anyways... I'm getting around 30MB/s now... it should be in the 50-60MB/s range... Good enough for now though. Thanks again... -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/
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