Re: [SLE] SCSI Tape compression
From: Ken Schneider (suse-list_at_bout-tyme.net)
To: firstname.lastname@example.org Date: Tue, 09 Aug 2005 12:49:36 -0400
On Tue, 2005-08-09 at 13:31 -0300, Sebastian Jeremias wrote:
> I'm having troubles compressing a DDS-4 tape. I have an HP C5683A drive,
> and when I do 'mt -f /dev/nst0 status' (or mtst) I get:
> twist:/opt/ltt # mtst -f /dev/nst0 status
> SCSI 2 tape drive:
> File number=0, block number=0, partition=0.
> Tape block size 0 bytes. Density code 0x8c (EXB-8505 compressed).
> Soft error count since last status=0
> General status bits on (41010000):
> BOT ONLINE IM_REP_EN
> The problem is that it's not using compression, although it's turned on.
> My questions are:
> - Is EXB-8505 the right compression mode? I read you could change it to
> DDS-4, but what's the compression code for DDS-4?
> - Do I need a hardware specific driver for the SCSI controller for the
> O.S. to recognize the tape in the proper way?
> - Something I'm missing?
> Thanks in advance,
Try this command instead:
mt -f /dev/st0 datcompression
to see the status of compression. Use mt -f /dev/st0 datcompression 2 to
turn it on.
-- Ken Schneider UNIX since 1989, linux since 1994, SuSE since 1998 "The day Microsoft makes something that doesn't suck is probably the day they start making vacuum cleaners." -Ernst Jan Plugge -- Check the headers for your unsubscription address For additional commands send e-mail to email@example.com Also check the archives at http://lists.suse.com Please read the FAQs: firstname.lastname@example.org