Date: Mon, 6 Oct 2008 13:45:02 -0400 From: Jerry McAllister <jerrymc@msu.edu> To: Jeremy Chadwick <koitsu@freebsd.org> Cc: freebsd-questions@freebsd.org Subject: Re: analyzing freebsd core dumps Message-ID: <20081006174502.GB71024@gizmo.acns.msu.edu> In-Reply-To: <20081006171809.GA26368@icarus.home.lan> References: <1223273047.23248.25.camel@phoenix.blechhirn.net> <20081006171809.GA26368@icarus.home.lan>
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On Mon, Oct 06, 2008 at 10:18:09AM -0700, Jeremy Chadwick wrote: > On Mon, Oct 06, 2008 at 08:04:07AM +0200, Mister Olli wrote: > > hi list... > > > > I have a freebsd maschine running for more 6 months without any > > problems. > > the machine's only service is to be an openvpn gateway for a hand of > > users. > > > > 2 weeks ago the first problems started. the openvpn exited with signal > > 11 and 4 and core dumps were written. > > > > the same happend yesterday with the postfix/cleanup process, and the > > suddenly the machine rebooted without any further log messages. > > > > what is the best way to troubleshoot the cause of this problem? > > Signal 11 happening "out of no where" on machines which have been > running fine, most of the time, is a sign of hardware failure (usually > RAM, but sometimes motherboard or PSU). The fact you got a reboot is > also further evidence of this. > > http://www.freebsd.org/doc/en/books/faq/troubleshoot.html#SIGNAL11 > > I would recommend taking the machine offline and running something like > memtest86+ on it for 6-7 hours. Any errors seen are a pretty good sign > that you should replace the memory or the motherboard. You can > download an ISO or floppy disk images here: > > http://www.memtest.org/ > > Bottom line is that this is probably a hardware issue. Could also be a contacts if it is not the actual memory or board. A marginal contact where something is plugged in can over time build up deposits that make it fail. Of course, this is still a hardware problem, but can often be cured by reseating everything. If it is bad enough, it could also be exacerbated by reseating everything. ////jerry > > -- > | Jeremy Chadwick jdc at parodius.com | > | Parodius Networking http://www.parodius.com/ | > | UNIX Systems Administrator Mountain View, CA, USA | > | Making life hard for others since 1977. PGP: 4BD6C0CB | > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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