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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!qns3.qns.net!imci4!newsfeed.internetmci.com!news.mathworks.com!enews.sgi.com!EU.net!sun4nl!charon.cvi.ns.nl!Utrecht.NL.net!news.iaf.nl!news.es.iaf.nl!yedi!wilko From: wilko@yedi.iaf.nl (Wilko Bulte) Subject: Re: Panic does not dump core Organization: Private FreeBSD site - Arnhem, The Netherlands Message-ID: <DvDGJC.vG@yedi.iaf.nl> References: <4thq2q$k41@news.cs.tu-berlin.de> Date: Tue, 30 Jul 1996 19:52:24 GMT Lines: 22 loewis@cs.tu-berlin.de (Martin v.Loewis) writes: >As the subject indicates, I cannot get my kernel to dump core on panic. >I set the the dumpdev in /etc/sysconfig to /dev/sd0s1b. On panic, it enters >DDB. When I press c, is says >dumping to dev 20401 offset 104576 >dump 40 ahc0: board not responding Apparantly the (hardware?) path to the dump device fails. >and the goes on with sync,shutdown. >Any help appreciated. >P.S. The causes of the panic where 'unmount: dangling vnode' and >'FPU device not available in kernel mode', respectively. I don't know >whether dumping is possible in all cases. Dumping is not in all cases possible. E.g. a blocked disk controller or driver is an example of a no-go Wilko