[4687] in linux-scsi channel archive
Re: Hardware compression on WangDat 3800
daemon@ATHENA.MIT.EDU (Michael Meissner)
Thu Sep 10 12:51:57 1998
Date: Thu, 10 Sep 1998 12:37:25 -0400
From: Michael Meissner <meissner@cygnus.com>
To: Kai.Makisara@metla.fi
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <19980910075711.A6261@tiktok.cygnus.com>; from Michael Meissner on Thu, Sep 10, 1998 at 07:57:11AM -0400
On Thu, Sep 10, 1998 at 07:57:11AM -0400, Michael Meissner wrote:
> On Thu, Sep 10, 1998 at 08:57:06AM +0300, Kai M{kisara wrote:
> > On Wed, 9 Sep 1998, Michael Meissner wrote:
> > ...
> > > In terms of blocksizes, etc. I use the 0.5 version of 'mt' to set
> > > compression 0 or 1, and set the block size to 8192 as well (I just
> >
> > I hope you are not using mt 0.5 with -f option: in this case it ignores
> > the numeric argument. This bug was discussed on this list a few weeks ago.
> > I have uploaded mt-st-0.5b to sunsite a few weeks ago but it may still be in
> > the Incoming directory.
>
> As a matter of fact I was using mt 0.5 (or mt 0.4 that came with RedHat).
> Unfortunately, I just joined the list, so I didn't see the earlier discussion.
> I'll try to dig up mt 0.5b. Thanks.
I found mt-0.5b and it let me set hardware compression (the tape wrote 4.5 gig,
when previously it was full at 3.5 gig). It looks like I now have a problem
with 8192 block sizes -- 'dd bs=8192 if=/dev/nst0 | cpio -i --only-verify-crc'
seems to hang.
--
Michael Meissner, Cygnus Solutions (Massachusetts office)
4th floor, 955 Massachusetts Avenue, Cambridge, MA 02139, USA
meissner@cygnus.com, 617-354-5416 (office), 617-354-7161 (fax)
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