From owner-freebsd-hackers Wed Nov 17 22:46:12 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from cs.rpi.edu (mumble.cs.rpi.edu [128.213.8.16]) by hub.freebsd.org (Postfix) with ESMTP id C3C7C15320 for ; Wed, 17 Nov 1999 22:46:08 -0800 (PST) (envelope-from crossd@cs.rpi.edu) Received: from cs.rpi.edu (monica.cs.rpi.edu [128.213.7.2]) by cs.rpi.edu (8.9.3/8.9.3) with ESMTP id BAA57262; Thu, 18 Nov 1999 01:46:03 -0500 (EST) Message-Id: <199911180646.BAA57262@cs.rpi.edu> To: Warner Losh Cc: "David E. Cross" , freebsd-hackers@FreeBSD.ORG, crossd@cs.rpi.edu Subject: Re: AMD wedging In-Reply-To: Message from Warner Losh of "Wed, 17 Nov 1999 23:14:08 MST." <199911180614.XAA21369@harmony.village.org> Date: Thu, 18 Nov 1999 01:46:03 -0500 From: "David E. Cross" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > In message <199911180054.TAA48910@cs.rpi.edu> "David E. Cross" writes: > : I have been noticing of late a disturbing trend of AMD wedging and > : eventually taking the entire system down. The WCHAN that it is locked in is > : "sbwait". I now have the luxury of having this happen on a non-critical > : system with DDB compiled in (the system is the one I am typing on now). > : How would I go about finding exactly what it is stuck on so I may correct > : the bug in the kernel or amd? > > -stable or -current? If -stable, then there is a well known bug that > prevents AMD from NFS mounting local file systems. I have a kludge > that is gross beyond words that I came up with, but haven't had a time This is indeed -stable, but I do not believe that this is the bug. For one the machine does not have any NFS exports. Another is that we have 'host==' and 'host!=' entries in our amd maps, host!= are NFS mounts, host== are sym-links. Strangely enough on this system it came back by itself. I just needed to wait 30 minutes and *poof*, the problem went away. Any ideas? -- David Cross | email: crossd@cs.rpi.edu Acting Lab Director | NYSLP: FREEBSD Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd Rensselaer Polytechnic Institute, | Ph: 518.276.2860 Department of Computer Science | Fax: 518.276.4033 I speak only for myself. | WinNT:Linux::Linux:FreeBSD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message