[ale] writing to tape

[Geoffrey]

Jim Kinney wrote:
> Just a probably dumb question but why pipe a tar output to a dd? Why not 
> use Tape ARchiver (tar) directly to write to the tape?
> (maybe I should reread the entire thread....)

To be honest, I don't recall.  Probably because we are tarring on the 
other end?  We are tarring from another machine as follow:

ssh $SERVER "tar -cf - $BackupThis" | dd bs=10k of=/dev/nst0

> 
> 2010/2/2 Björn Gustafsson <bg-ale at bjorng.net <mailto:bg-ale at bjorng.net>>
> 
>     On Mon, Feb 1, 2010 at 10:31 AM, Geoffrey
>     <lists at serioustechnology.com <mailto:lists at serioustechnology.com>>
>     wrote:
>      > Greg Freemyer wrote:
>      >> What's your command line including pipes.
>      >
>      > ssh servername "tar -cf - $BackupThis" | dd bs=10k of=/dev/nst0
> 
>     I don't know if it works with GNU tar, but you might want to try the
>     -B switch and/or to set `-b 20' to explicitly match the dd blocksize.
>     (20 should be the default though.)
> 
>     After quickly checking the GNU tar manpage, it seems to indicate that
>     -B only works for reads, but it might be worth a try anyway.
> 
>     --
>     Björn Gustafsson
> 
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> 
> -- 
> -- 
> James P. Kinney III
> Actively in pursuit of Life, Liberty and Happiness        
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-- 
Until later, Geoffrey

"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson