From owner-freebsd-hackers Thu Jan 4 16:48:02 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id QAA02437 for hackers-outgoing; Thu, 4 Jan 1996 16:48:02 -0800 (PST) Received: from gateway.sequent.com (gateway.sequent.com [138.95.18.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id QAA02417 for ; Thu, 4 Jan 1996 16:47:58 -0800 (PST) Received: from eng4.sequent.com (eng4.sequent.com [138.95.7.64]) by gateway.sequent.com (8.6.12/8.6.9) with ESMTP id QAA28897; Thu, 4 Jan 1996 16:46:35 -0800 Received: from localhost (bjj@localhost) by eng4.sequent.com (8.6.12/8.6.9) with SMTP id QAA02879; Thu, 4 Jan 1996 16:47:23 -0800 Message-Id: <199601050047.QAA02879@eng4.sequent.com> X-Authentication-Warning: eng4.sequent.com: Host localhost didn't use HELO protocol To: "Amancio Hasty Jr." Cc: hackers@FreeBSD.org Subject: Re: buggy 2940 driver? In-reply-to: Your message of "Thu, 04 Jan 96 13:33:41 PST." <199601042133.NAA00496@rah.star-gate.com> Date: Thu, 04 Jan 96 16:47:23 PST From: Ben Jackson Sender: owner-hackers@FreeBSD.org Precedence: bulk In message <199601042133.NAA00496@rah.star-gate.com> , you wrote: > For a while now , I have been experiencing system freezes due to > the 2940 controller. The thing is before I upgraded to 2.1-stable > a while ago the system ran fine. > > It seems that sometimes under heavy disk i/o activity my 2940 goes > into this reset mode [...] I have a 2940 connected to (among other things) a QUPD1800S. During extended periods of heavy read activity (ie backups) the device and/or card will eventually hang, leaving the machine hung (there's a swap partition on that disk). The tape drive is on another SCSI controller, so it's not the problem. I have had varying success avoiding the problem by running backups from a vt while the machine is otherwise idle, but sometimes it hangs anyway. After the hang the 2940 access light is on solid, as is the light on the drive. I have upgraded to latest greatest drivers several times, since each has held the promise of more and smarter bus reset code, to no avail. I don't have another similar drive to experiment with, but on my AHA1542Cf this same drive had no problems. --Ben