Date: Fri, 14 Aug 2009 19:01:32 +0400 From: Ruslan Ermilov <ru@freebsd.org> To: Ian FREISLICH <ianf@clue.co.za> Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, FreeBSD current mailing list <current@freebsd.org> Subject: Re: panic in netisr (I think) + DUMP FAILED (ERROR 6) Message-ID: <20090814150132.GF69960@edoofus.dev.vega.ru> In-Reply-To: <E1Mbx7k-0001zP-UW@clue.co.za> References: <20090814120602.GA64565@edoofus.dev.vega.ru> <20090814080044.A93661@maildrop.int.zabbadoz.net> <E1MbqAJ-0001Cm-0j@clue.co.za> <E1MbsRG-0001Ra-AY@clue.co.za> <E1Mbx7k-0001zP-UW@clue.co.za>
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On Fri, Aug 14, 2009 at 03:47:16PM +0200, Ian FREISLICH wrote: > Ruslan Ermilov wrote: > > On Fri, Aug 14, 2009 at 10:47:05AM +0200, Ian FREISLICH wrote: > > > Do you have any idea why kernel dumps are not working as shown in > > > the OP? > > > > > There was a message, "Attempt to write outside dump device boundaries.", > > that explains that. Search the mailing list archives where I explained > > the underlying bug with current versions of FreeBSD (in short page maps > > get updated while we're writing a dump, due to interrupts still enabled). > > And then, this bug is probably why my dumps have been unusable since > about 12 months now? These (2) servers have a continuous interrupt > rate in excess of 40k/s, network related, so interrupts during > dumping are highly likely. Reading that thread I'm given to believe > that the problem exists only for mini-dumps. I've had crashes > without cores with (and without) mini-dumps enabled, but I've only > recently started capturing console output, so I'll see what happens > on its next crash. They reliably crash at least once a week. > True: only on SMP and only with minidumps enabled. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer
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