[rescue] OK, "pull" backups work. How can I read the tape?

[Bill Bradford]

On Tue, Nov 26, 2002 at 05:31:19PM -0500, Sheldon T. Hall wrote:
> To back up the machine foo to the tape drive on machine bar run
>     rsh foo ufsdump 0fb 126 - /usr | dd of=/dev/rmt/0n bs=126b
> on bar, which works fine.  I'm using it to back up an SGI machine to a tape
> drive on a Solaris box, so the actual command I'm using is
>     rsh blinky xfsdump -l 0 -F - / | dd of=/dev/rmt/0cn bs=126b
> Which also works fine, as far as I can tell.  At least I usually get no
> error messages.

I was using this, via ssh instead of rsh, back in 1998. 8-)  I usually 
also use a program called "buffer" on the local end to buffer the output
of the dump to tape at full speed (just a fifo buffer).

> However, were I actually to need the files on the backup tape, how would I
> read 'em and restore 'em?  The tapes on a Solaris box, the files would have
> to be restored to the SGI ....

>From the sgi, rsh to the sun box, dd, feed it to stdout, then feed
that to xfsrestore on the sgi.. Basically just do it "backwards".

Bill

-- 
bill bradford
mrbill at mrbill.net
austin, texas