Re: using dump?

["John Abreau-2" <user=184@nabble.blu.org>]

Scott Ehrlich wrote: 
> Clarification request - why rewind the tape after all dumps have 
> completed?  Wouldn't that be the same as using /dev/st0?  If not, 
> what's the difference? 
> 
> Thanks. 
> 
> Scott 

If you're doing 10 dumps to the tape, you could use nst0 for the first 9 
and then use st0 for the 10th.  But that's less elegant, as seen below: 

    #! /bin/sh 

    export TAPE=/dev/nst0 
    for fs in /foo /bar /baz ; do 
        dump -0 $fs 
    done 
    mt rewoffl 

vs 

    #! /bin/sh 

    export TAPE=/dev/nst0 
    for fs in /foo /bar ; do 
        dump -0 $fs 
    done 
    dump -0 -f /dev/st0 /baz 

If you want to add /zoidberg to the list, and you have scripts with 
dependencies on the order that the filesystems appear on the tapes, 
then /zoidberg needs to be dumped after /baz. In the first case, 
you could add it to the for... line, after /baz; in the latter, you'd have 
to move /baz to the for... line, and replace /baz in the final dump line. 
That's more complicated and error-prone. 


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