Date: Mon, 10 Jan 2000 17:04:09 -0700 (MST) From: "Justin T. Gibbs" <gibbs@narnia.plutotech.com> To: djb@Wit389306.student.utwente.nl Cc: current@FreeBSD.org Subject: Re: Strange SCSI related system hang Message-ID: <200001110004.RAA01471@narnia.plutotech.com> In-Reply-To: <20000109134916.A382@relativity.student.utwente.nl>
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In article <20000109134916.A382@relativity.student.utwente.nl> you wrote: > Hi all, > > This morning I had a very strange (at least I've never seen it before) SCSI > related system hang. The system simply stopped responding at 9:30:03 am > this morning. I found it in this state at 13:20. It had been hanging > _hard_. No response to console, serial terminal or network. After a hard > reset the system came back online normally and is working normally again. > > Note that the machine had an uptime of 4 days, 14 hours before the problem > occured and it never happened before. > > Could this be a hardware problem? Perhaps. Is your WD drive getting hot? The ahc driver believes that, during a message out phase, the target simply dropped off the bus. It may be that the ahc driver did something to provoke that, but without a bus analyzer on the drive, it is hard to know. According to the progrom counter, we are waiting for the target to request the next byte at the time this occurs, but that request never comes. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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