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Date:      Sun, 17 Jan 1999 20:51:42 +0000
From:      Karl Pielorz <kpielorz@tdx.co.uk>
To:        current@FreeBSD.ORG
Subject:   Problems with new IDE's & -current
Message-ID:  <36A24D5E.F1875A83@tdx.co.uk>

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Hi,

I have a system that's meant as a 'backup disk spool' - it has a 2Gb SCSI
drive to boot from, and then 2 x 16Gb IDE drives (IBM-DTTA-351680's).

The system works fine so long as I stick to using the SCSI drives... If I use
the IDE's (e.g. backup another machine to them, tar / untar 'usr/src' to them)
I start getting problems,

e.g.

Jan 14 13:01:42 magpie /kernel: wd0: interrupt timeout:
Jan 14 13:01:42 magpie /kernel: wd0: status 58<rdy,seekdone,drq> error 0
Jan 15 17:56:52 magpie /kernel: lnc0: Missed packet -- no receive buffer
Jan 15 17:57:43 magpie /kernel: lnc0: Missed packet -- no receive buffer

The machine also has an NE-2100 embedded network card. We have 4 other
identical machines to this, all SCSI based - all work without any problems...

Is there anything that can be done? - at a guess I'd say the IDE's/wcd0 are
timing out on interrupts, which is then stuffing the network (as the systems
been waiting around too long for wcd0's IRQ's?)...

The machine is a dual P90 (running SMP) - I get the problems even with a
single CPU kernel... It's running Neptune chipset (quite old) - and only has 1
IDE channel.

Any pointers? - The drives do appear to work OK, i.e. no corruption, but the
_whole_ machine appears to 'stall' when the above occurs = not good... :-(

I've tried 3.0-Release and 3.0-Current as of 7th Jan, '99 - Both exhibit
identical symptoms...

-Kp

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