Date: Sun, 02 Mar 2008 20:32:46 +0100 From: "Julian H. Stacey" <jhs@berklix.org> To: Scott Long <scottl@samsco.org> Cc: Jeremy Chadwick <koitsu@freebsd.org>, freebsd-stable@freebsd.org, Stephen Hurd <shurd@sasktel.net> Subject: Re: ad0 READ_DMA TIMEOUT errors on install of 7.0-RELEASE Message-ID: <200803021932.m22JWkq1065925@fire.js.berklix.net> In-Reply-To: <20080302005352.GA72081@eos.sc1.parodius.com> References: <47C52948.2070500@sasktel.net> <20080227121129.GA76419@eos.sc1.parodius.com> <47C5ACD0.8000009@sasktel.net> <47C5C622.5000209@samsco.org> <20080302005352.GA72081@eos.sc1.parodius.com>
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Jeremy Chadwick wrote: > On Wed, Feb 27, 2008 at 01:20:50PM -0700, Scott Long wrote: > > I'd like to attack these driver problems. What I need is to spend a > > couple of days with an affected system that can reliably reproduce the > > problem, instrumenting and testing the driver. I have a number of > > theories about what might be going wrong, but nothing that I'm > > definitely sure about. If you are willing to set up your system with > > remote power and remote serial, and if we knew a reliable way to > > reproduce the problem, I could probably have the problem identified and > > fixed pretty quickly. > > Scott, I just wanted to take a moment to publicly thank you for stepping > up to the plate on this one. I have a feeling that most of these > reports will have to be dealt with on a case-by-case basis, but despite > that, I really do apprecaite you offering to take this one. Thank you > very, very much. > > In regards to my experience with said problem, I haven't been able to > reproduce the errors I saw on January 25th: > > http://lists.freebsd.org/pipermail/freebsd-stable/2008-January/040013.html > > I do need to get the box in question into our datacenter and set up our > remaining dev/test box to do nothing but hard I/O between ZFS and UFS > for hours (or days) on end to see if I can reproduce it. There's an > entry in the FreeBSD ZFS wiki about this problem, but there's a > possibility the issue I saw is different than what another user reported > (his result was a panic, my result was a machine that locked up hard > after letting FreeBSD report DMA errors for some time). That user's > post is here: > > http://lists.freebsd.org/pipermail/freebsd-stable/2008-January/040047.html I have 2 laptops running 7 http://www.berklix.com/~jhs/hardware/digital/dmesg/ http://www.berklix.com/~jhs/hardware/laptops/dell_latitude_xpi_p133st/ http://www.berklix.com/~jhs/hardware/laptops/#loader.conf that wont boot without /boot/loader.conf hw.ata.ata_dma="0" > If you are willing to set up your system with remote power and remote serial Sorry, I can't offer that easily ( Would need to remove laptop battery, move laptop & UPS to another site, set up serial of UPS to a net server & prob v. little to no chance of BIOS & serial console) I could easily test any patches though, made against 7.0-stable (sorry no current partition on there currently - small disc.) Julian -- Julian Stacey: BSDUnixLinux C Prog Admin SysEng Consult Munich www.berklix.com Mail just Ascii plain text. HTML & Base64 is spam.
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