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Top Forums UNIX for Advanced & Expert Users Speed problems with tar'ing a 500Gb directory on an eSATA drive Post 302623241 by rbatte1 on Friday 13th of April 2012 10:09:48 AM
Old 04-13-2012
Would you consider:-
Code:
# cd source_directory
# tar -cvf - . | rsh target_server "cd target_directory ; tar -xvf -"

I'm assuming it's rsh not remsh for your OS.

If the server is remote or the network is the bottleneck, you could consider:-
Code:
# cd source_directory
# tar -cvf - . | compress | rsh target_server "cd target_directory ; uncompress | tar -xvf -"

Of course, this latter option costs on CPU and is best on multi-proc servers so that the tar and compress are not competing.
I've shovelled 200Gb between remote sites over 2M link in a weekend with something like the above, although the syntax will need to be checked. I must have got pretty good compression I suppose. I can't really test it at the moment.

You will need to ensure that the local server can remote shell to the target. An entry in /.rhosts should suffice, but if this seems a good plan but you can't get remote shell working, let us know.


I hope that this helps
Robin
Liverpool/Blackburn
UK
This User Gave Thanks to rbatte1 For This Post:
 

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RSH(1)							      General Commands Manual							    RSH(1)

NAME
rsh - remote shell SYNOPSIS
rsh [-n] [-l username] host [command] host [-n] [-l username] [command] DESCRIPTION
Rsh connects to the specified host, and executes the specified command. Rsh copies its standard input to the remote command, the standard output of the remote command to its standard output, and the standard error of the remote command to its standard error. Interrupt, quit and terminate signals are propagated to the remote command; rsh normally terminates when the remote command does. The remote username used is the same as your local username, unless you specify a different remote name with the -l option. This remote name must be equivalent (in the sense of rlogin(1)) to the originating account; no provision is made for specifying a password with a com- mand. If you omit command, then instead of executing a single command, you will be logged in on the remote host using rlogin(1). Shell metacharacters which are not quoted are interpreted on local machine, while quoted metacharacters are interpreted on the remote machine. Thus the command rsh otherhost cat remotefile >> localfile appends the remote file remotefile to the localfile localfile, while rsh otherhost cat remotefile ">>" otherremotefile appends remotefile to otherremotefile. OPTIONS
-l username Specify the remote user name. -n Connect standard input of the remote command to /dev/null. Do this if rsh should not inadvertently read from standard input. SEE ALSO
rcp(1), rlogin(1), rhosts(5). BUGS
You cannot run an interactive command (like rogue(6) or vi(1)); use rlogin(1). 4.2 Berkeley Distribution April 29, 1985 RSH(1)
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