Date: Fri, 29 Aug 2008 23:32:23 +0200 From: "Pascal Hofstee" <caelian@gmail.com> To: "John Baldwin" <jhb@freebsd.org> Cc: freebsd-current@freebsd.org, Christian Weisgerber <naddy@mips.inka.de> Subject: Re: No root filesystem Message-ID: <d8a0b7620808291432i665121e5xc93b6c45a3ece14e@mail.gmail.com> In-Reply-To: <200808290951.44955.jhb@freebsd.org> References: <g8nl1b$279$1@lorvorc.mips.inka.de> <200808231056.18305.jhb@freebsd.org> <d8a0b7620808290036k508de5ddx579e9032b9f8bc84@mail.gmail.com> <200808290951.44955.jhb@freebsd.org>
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On Fri, Aug 29, 2008 at 3:51 PM, John Baldwin <jhb@freebsd.org> wrote: > So the reports I've seen of this all involve the Nvidia MCP55 ATA chipset, and > only the ata controller loses its marbles (so to speak). Christian ran a > patch that tested each PCI config read and they always returned the same > value from both methods. I think that this may be a weird bug in the ata > driver itself. It might be helpful to add printfs to instrument the various > nvidia-specific ATA routines in sys/dev/ata/ata_chipset.c to compare the old > and new kernels. I admit i am not exactly versed in kernel-level coding (though i do have a solid understanding of C itself). If perhaps you could give a couple of pointers to the kind of additional debug output you're looking for i am willing to play around with that to provide any additional information. -- Pascal Hofstee
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