Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
cancel
Showing results for 
Search instead for 
Did you mean: 

tar

Ragni Singh
Super Advisor

tar

Hi all, how would I tar up everything in / on one system and then untar it to a tape on another system. Is this possible. Any help will be greatly appreciated and points will be assigned.
3 REPLIES
Vincent Fleming
Honored Contributor

Re: tar

What do you mean, untar it to a tape?

If what you mean is how to tar up a filesystem and write the tar to a tape on another system, then there are several ways.

One way that used to work that was easy was to NFS export the /dev filesystem of the machine with the tape drive, and mount it on the client machine - then just tar as if the tape drive is local.

Another way we used to do that was via remote shells:

tar cvf - | rsh remoteserver cat > /dev/rmt/0n


Good luck!

Vince
No matter where you go, there you are.
Ragni Singh
Super Advisor

Re: tar

Thanks for yur help but when I try running it with the tar command, it gives me a messge os sort " refusing to create an empty archive".

Any other ideas.
Stuart Browne
Honored Contributor

Re: tar

Vincent missed a character:

tar cvf - . | rsh remoteserver cat > /dev/nst0

(Note: I chagned the device name to a Linux device node for a tape, and put a period before the pipe).

Otherwise, if you really *WANT* to create a file first, you can 'dd' a tar file directly to a tape device as well.

It's basically the same as what was done above, but using an intermediate file instead of immediately.

I would advise against using an intermediate file if possible.
One long-haired git at your service...