[2952] in linux-scsi channel archive
Re: BusLogic problems...
daemon@ATHENA.MIT.EDU (Mike Nachlinger)
Wed Dec 17 15:41:05 1997
Date: Wed, 17 Dec 1997 09:37:38 -0800 (PST)
From: Mike Nachlinger <mnach@northstar.apres.org>
To: rstagg@csc.com
cc: linux-scsi@vger.rutgers.edu, linux-eata@goofy.zdv.Uni-Mainz.de
In-Reply-To: <8525656F.00655B45.00@csc.com>
On Wed, 17 Dec 1997 rstagg@csc.com wrote:
>
> Alles,
>
> I imagine that this is a fairly common query, but my researches have turned
> up nothing.
>
> Today, I removed an Adaptec 2940 from my Linux box and replaced it with a
> BT958. This, primarily, was because the Adaptec was screwing any attempts
> at CD writing.
>
> Now, any prolonged hard-disc accesses are repeatedly and time-consumingly
> interrupted with:
>
> scsi: aborting command due to timeout : pid xx, scsi0, channel 0, id 0, lun
> 0 Read (10) 00 00 2a b4 ee 00 00 10 00 (or some such)
> scsi0: Aborting CCB#107 to Target 0
> SCSI host 0 abort (pid 95) timed out - resetting
> SCSI bus is now being reset for host 0 channel 0.
> scsi0: Tagged Queueing now disabled for Target 0
> scsi0: Sending Bus Device Reset CCB #108 to Target 0
> SCSI host 0 channel 0 reset (pid 95) timed out - trying harder
> SCSI bus is being reset for host 0 channel 0.
> scsi0: Resetting BusLogic BT-958 due to Target 0
> scsi0: *** BusLogic BT-958 Initialised Successfully ***
>
> Obviously with varying PIDs and CCBs. And this happens LOADS - even during
> fscking, which is unnerving to say the least!
>
> My system:
> Kernel: 20.0.32. Pentium 200. SpeedEasy motherboard. 256Mb.
> 2 x Quantum Fireball ST4.3S hdds
> Matshita CD-506 cdrom
> Yamaha CDR100 cd-writer
> I'm running Buslogic driver 2.0.10 (11/8/97).
> Buslogic SCSI firmware is v5.07B.
>
> My hard discs both detect at Syncronous 20.0 Mtransfers/sec (offset 15)
> Both CD drives come up as Asyncronous.
>
> Can anybody suggest 1) what's wrong and 2) how to put it right?!
>
> Thanks VERY much...
>
> Richard Stagg
>
>
>
Hi Richard,
Your mail is timely. I have an Adaptec 2940 doing the same
thing. Was ready to rip it out and replace it with a
Buslogic. Now I'm not so sure. These only occurs on my
system under high load when cron is expiring news and doing
an updatedb. I've added active termination at both ends. No
help. I read somewere the scsi cable can't be over 2 meters
and you need approx. 12" between nodes. Can someone confirm
the 12" part? My scsi cable is homemade. Can I get a source
on good quality cable from someone. Also I've assumed you
remove the passive termination when you place the active
terminators on the bus. Correct? These problems were not
showing up in kernels before 2.0.27(I think) Can the 27
aic7000 code be subsituted into the 33 kernel without
other ill effects? Some other off topic question - can you
mix wide and ultrawide drives in a raid enviorment? Is DPT
the best supported raid card with linux. Who makes a chassis
that supports hot swaps (power & drive) and we're are they
located? Is 5 drives best for raid 5 or are 3 just as
reliable? Thanks!
Regards,
Mike
Mike Nachlinger Apres Ski Club, Inc.
1-888-APRESGO www.apres.org mnach@apres.org
