[4689] in linux-scsi channel archive
Re: Hardware compression on WangDat 3800
daemon@ATHENA.MIT.EDU (Michael Meissner)
Thu Sep 10 15:37:02 1998
Date: Thu, 10 Sep 1998 14:20:46 -0400
From: Michael Meissner <meissner@cygnus.com>
To: Russell Berry <russ@berrex.com>
Cc: Kai.Makisara@metla.fi, linux-scsi@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.96.980910140005.19048A-100000@wintermute>; from Russell Berry on Thu, Sep 10, 1998 at 02:00:27PM -0400
On Thu, Sep 10, 1998 at 02:00:27PM -0400, Russell Berry wrote:
> Did you try mt -f /dev/st0 setblk 8192 first?
Yes. I killed the dd process that was hung, and tried it with setblk 0
instead of setblk 8192, and it seemed better. I'm doing a full dump and verify
to see whether that fixes it.
> On Thu, 10 Sep 1998, Michael Meissner wrote:
> > 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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