[176] in linux-scsi channel archive
Re: Linux hangs with Exabyte tape drive
daemon@ATHENA.MIT.EDU (Kai Harrekilde-Petersen)
Wed May 17 14:31:54 1995
From: Kai Harrekilde-Petersen <khp@pip.dknet.dk>
To: jmorriso@Master.ConcordPacific.Com (John Paul Morrison)
Date: Wed, 17 May 1995 19:02:53 +0200 (MET DST)
Cc: linux-scsi@vger.rutgers.edu (Linux SCSI mailing list)
In-Reply-To: <199505170139.SAA03122@Master.ConcordPacific.Com> from "John Paul Morrison" at May 16, 95 06:39:11 pm
John Paul Morrison wrote:
>
> Linux 1.2.8 is randomly hanging when I try to backup using an
> Exabyte 8 mm tape drive connected to an Adaptec 2940 SCSI controller.
> It seems to hang while I'm doing a backup, sometimes right away,
> other times in the middle, or not at all.
>
> I don't think it completely hangs linux: because I can stilll ping the
> machine on the network; and sometimes when I'm running X I can still
> move the mouse cursor, but I can't do anything else (ie disk access)
>
>
> any ideas why Linux is doing this? Harddisk access is fine.
John, this sounds like the SCSI lockups I've had. Try playing around with
the BIOS setup params. I have an 1542CF, and have no problems accessing my
Wantek DAT. However, when I added an IBM 1Gig disk, I got lockups when
transfering between the disk and the DAT. In the end I found out that if I
switched off DISCONNECT to the disk, everything worked.
I talked to the company to supplied the disk, who in turn talked with
those that supplied the disk to them. They claimed that it was a bug
in the Adaptec controller(!).
So, try disallowing DISCONNECT to the disk, and see what happens.
Good luck,
Kai
--
Kai Harrekilde-Petersen <khp@pip.dknet.dk> Linux: choice of a GNU generation
>> Inside every little problem there's a BIG problem, struggling to get out <<
===== Please do not use my old account <khp@login.dknet.dk> as it's void =====
