SGI dat tapes on Linux?

SGI dat tapes on Linux?

Post by Andrea Berni » Thu, 15 Jan 1998 04:00:00



How could I read on Linux (RedHat 4.1) a dat tape written by a Silicon
Graphics  Workstation with tar (I know they use different block
management or similar)?

Thanks in advance.

 
 
 

SGI dat tapes on Linux?

Post by Jim Howe » Thu, 15 Jan 1998 04:00:00


: How could I read on Linux (RedHat 4.1) a dat tape written by a Silicon
: Graphics  Workstation with tar (I know they use different block
: management or similar)?

Dunno about different block management, but to read IRIX SGI tar DC6150's
on my sparc box, I usually stick the tape through dd conv=swab to swap
the byte order around..

Such as..
        dd if=/dev/tape bs=10240 conv=swab | tar tvf -

Regards,
Jim

 
 
 

SGI dat tapes on Linux?

Post by Chris Saunderso » Sat, 17 Jan 1998 04:00:00




> : How could I read on Linux (RedHat 4.1) a dat tape written by a Silicon
> : Graphics  Workstation with tar (I know they use different block
> : management or similar)?

> Dunno about different block management, but to read IRIX SGI tar DC6150's
> on my sparc box, I usually stick the tape through dd conv=swab to swap
> the byte order around..

> Such as..
>    dd if=/dev/tape bs=10240 conv=swab | tar tvf -

Or vice-versa to read a Sun tape on an SGI.

Reading SGI tapes on Linux is easy - do a 'mt setblk 0' and go for it!

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SGI dat tapes on Linux?

Post by Chris Saunderso » Sat, 17 Jan 1998 04:00:00



> How could I read on Linux (RedHat 4.1) a dat tape written by a Silicon
> Graphics  Workstation with tar (I know they use different block
> management or similar)?

# mt setblk 0
# tar tvf /dev/st0
?

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Technical Support Engineer      Telephone: (08) 8379 7333
Maptek Pty Ltd                  Fax:       (08) 8379 7377
                                Powered by Linux, Jolt and the Orb.

 
 
 

SGI dat tapes on Linux?

Post by Mogens Kjae » Wed, 28 Jan 1998 04:00:00




> > How could I read on Linux (RedHat 4.1) a dat tape written by a Silicon
> > Graphics  Workstation with tar (I know they use different block
> > management or similar)?

> # mt setblk 0
> # tar tvf /dev/st0
> ?

I once spent a LONG TIME trying to get this to work, and it never did.
The problem was that
the default block size on SGI DAT tapes is 256K, which was too much for
linux (kernel limitation).
But of course you can write your SGI tapes with a smaller block size,
then it works without problems
(can't remember if you had to byteswap, though).

Mogens

--
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08