Date: Mon, 20 Sep 1999 12:08:24 +0200 From: Roberto Micarelli <mi.ro@iol.it> To: aic7xxx@FreeBSD.org Subject: scsi bus lockups Message-ID: <37E60798.A956BDC3@iol.it>
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Excuse me for my english, I'll try to do my best. Some days ago I sent an help request about scsi bus lockups problems. I'm using an onboard aic7880. I'm using a linux kernel 2.0.38 (ipnat patched) with aic7xxx upgraded to 5.1.19 I've an only device which is an external raid controller from CMD working on a single-ended/active terminated bus Since today we have made lot of tests leading always to the same behaviour: scsi bus resets due to timeouts, processes trying to access the scsi partitions lock, sometime the kernel freezes or continues issuing resets The time after which the lockup happens seems to be related to the bus configuration but is random in any case. I do my tests 'stressing' the system with continuos IO. I stay in the range of 10-12 hours working with a round cable and 1-4 hours with other things (flat, passive terminations, ...) I have been using a scsi cable tester and a voltage tester to check expecially against power fluctuations; power supply seems ok. Now: I'm going to do further hardware-oriented tests. Should I be wrong? Should it be a software bug? in which case I'm loosing my time (and money). Intentionally I did not include a detailed test condition table, if you are interested to I can specify it better. I'm going to send you a detailed report of my experience when I will solve the problem. Thank you for any help. Roberto. P.S.: How to obtain old mailing list massages? (I'm new to the list) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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