Re: [SLUG] Travan tapes under GNU/Linux (Debian Woody)

[mkraus@xxxxxxxxxxxxxxxxxxxxxx]

What version of mt are you using?

FWIW:
# mt --version
mt-st v. 0.7

I can't see anything in the manpages here regarding datacompression  and:

# mt datcompression 1
mt: unknown command "datcompression"
usage: mt [-v] [--version] [-h] [ -f device ] command [ count ]
commands: weof, wset, eof, fsf, fsfm, bsf, bsfm, fsr, bsr, fss, bss, rewind,
          offline, rewoffl, eject, retension, eod, seod, seek, tell, status,
          erase, setblk, lock, unlock, load, compression, setdensity,
          drvbuffer, stwrthreshold, stoptions, stsetoptions, stclearoptions,
          defblksize, defdensity, defdrvbuffer, defcompression, stsetcln,
          sttimeout, stlongtimeout, densities, setpartition, mkpartition,
          partseek, asf.

Thanks

Mike
---
Michael S. E. Kraus
Administration
Capital Holdings Group (NSW) Pty Ltd
p: (02) 9955 8000

Lester Cheung <lcheung@xxxxxxxxxxxxxx> Sent by: slug-bounces@xxxxxxxxxxx 09/05/2003 12:44 AM

To:        SLUG <slug@xxxxxxxxxxx>         cc:                 Subject:        Re: [SLUG] Travan tapes under GNU/Linux (Debian Woody)

>From mt(1):

...
datcompression
      (some SCSI-2 DAT tapes) Inquire or set the  compression  status
      (on/off).  If  the  count  is  one  the  compression  status is
      printed. If the count is zero, compression is disabled.  Other-
      wise,  compression  is enabled. The command uses the SCSI ioctl
      to read and write the  Data  Compression  Characteristics  mode
      page (15). ONLY ROOT CAN USE THIS COMMAND.

see if `mt datcompression 1' work. And Matt is right: u better off using gzip
or bzip2.

HTH

-- 
-lestercheung


On Mon, May 05, 2003 at 09:13:58PM -0400, belfry@xxxxxxxxxxxxx wrote:
> G'day all...
> 
> For our backups, we use Travan 20G tapes. However, as the drive operates in
> native mode, I can only fit 10G per tape.
> 
> Does anyone know how I can set the drive in compressed mode under GNU/Linux
> so I can fit 20G per tape?
> 
> TIA...
> 
> Mike
> 
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