Date: Tue, 25 Mar 2008 01:44:55 -0700 From: Jeremy Chadwick <koitsu@freebsd.org> To: Gianni <gdoe6545@yahoo.it> Cc: freebsd-stable@freebsd.org Subject: Re: ad0 READ_DMA TIMEOUT errors on install of 7.0-RELEASE Message-ID: <20080325084455.GA36520@eos.sc1.parodius.com> In-Reply-To: <20080325084330.GA36390@eos.sc1.parodius.com> References: <EEA261A2-96D4-4FAB-8213-A5FD2F6233CF@yahoo.it> <20080322035212.GA15541@eos.sc1.parodius.com> <248F8C92-14F4-4FF8-94FE-2F220FFBE8FB@yahoo.it> <20080325084330.GA36390@eos.sc1.parodius.com>
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On Tue, Mar 25, 2008 at 01:43:30AM -0700, Jeremy Chadwick wrote: > On Tue, Mar 25, 2008 at 08:32:07AM +0100, Gianni wrote: > > On 22/mar/08, at 04:52, Jeremy Chadwick wrote: > >> On Fri, Mar 21, 2008 at 06:27:19PM +0100, Gianni Doe wrote: > >>> I'm also experiencing this issue after upgrading to 7.0-RELEASE from 6.3 > >> The most I can provide is here: > >> http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues > > > >> Workaround: Set hw.ata.ata_dma=0 in /boot/loader.conf. This will disable > >> use of DMA in the ATA/SATA subsystem; > > > > I'm afraid the workaround doesn't work for me, I set hw.ata.ata_dma="0" in > > loader.conf and the problem still occurs. > > Just to double-check... > > # sysctl hw.ata.ata_dma > > hw.ata.ata_dma: 0 > > Are you using PATA or SATA disks? I re-read your mail -- sorry. You're using SATA. I'll update my Wiki page to state that the loader.conf DMA disable trick only works for PATA. In the interim, I recommend you contact Scott Long, especially if your problem is easily repeatable. He's offered to help track this down. -- | 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 |
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