Date: Sat, 5 Mar 2005 15:58:26 -0800 (PST) From: Rob <spamrefuse@yahoo.com> To: FreeBSD questions <freebsd-questions@freebsd.org> Subject: Re: dma/sysctl Message-ID: <20050305235826.83478.qmail@web54009.mail.yahoo.com>
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Luciano Musacchio wrote: > Hi, > I've a fbsd machine that hangs once in a while, > I've this en /var/log/messages: > ... > Mar 5 14:44:58 chiba kernel: ad2: WARNING - > WRITE_DMA UDMA ICRC error (retrying request) > LBA=2949471 > ... > > So, this means my hd is about to crash? > How can I tell the kernel to reboot on such cases? > (via sysctl?) This is 5.3, right? I bet you would not have such problems with 4.X. My PC instantly crashed at boot with this same message. I solved it by adding following to /boot/loader.conf: hw.ata.ata_dma="0" This will force the harddisk to operate in slow PIO4 mode, but in my case the DMA trouble disappeared. Rob. __________________________________ Celebrate Yahoo!'s 10th Birthday! Yahoo! Netrospective: 100 Moments of the Web http://birthday.yahoo.com/netrospective/
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