Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request From: ehrlich@cs.psu.edu (Daniel Ehrlich) Newsgroups: comp.sys.sun Subject: Re: watchdog reset Keywords: Hardware Message-ID: <1074@brazos.Rice.edu> Date: 23 Aug 89 15:41:52 GMT Sender: root@rice.edu Organization: Sun-Spots Lines: 46 Approved: Sun-Spots@rice.edu X-Sun-Spots-Digest: Volume 8, Issue 105, message 9 of 12 In article <718@brazos.Rice.edu> titan.tsd.arlut.utexas.edu!kam@cs.utexas.edu (Katherine Minister Hosch) writes: Howdy all. This has happened twice now, and I'm starting to get a little worried. We have a standalone 4/260 that crashed the other day, leaving only the message (on the console): > watchdog reset We have been seeing these on a regular basis on our `new' 4/280S. A question, is your 4/260 equipped with the FPU2 floating point daughter board? If the CPU occupies slots 1 and 2 it probably does. In any event our problem seems to be related to having the two 7053 disk controllers trying to access the VME bus at the exact same time. I rebooted, and ran fsck, but it didn't seem to have any big problems. Today it crashed again, with the same console message. The messages file didn't contain anything the first time, but the second time there was a message from two days ago about a memory failure: Jul 29 13:48:41 mars vmunix: mem3: soft ecc addr 4ce550 syn 5b 41 U1841 Somehow I suspect that the message is unrelated to the reset though. My question is this: what *causes* a 'watchdog reset', other than pushing the 'reset' button on the back of the machine? In neither case was the button pushed. What I have been told by the folks at Sun is that the 'Watchdog reset' occurs when there is a double bit parity error on the VME bus. This sounds like a bad problem to me; does anyone have any ideas about it? Sun's standard response is to replace the CPU board. Although this may not be the real cause of the problem. Katherine Minister Hosch: kam@titan.tsd.arlut.utexas.edu Applied Research Laboratories (512)-835-3148 University of Texas at Austin P.O. Box 8029, Austin, TX 78713-8029 -- Dan Ehrlich | Disclaimer: The opinions expressed are The Pennsylvania State University | my own, and should not be attributed Department of Computer Science | to anyone else, living or dead. University Park, PA 16802 |