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Date:      Wed, 13 Apr 2011 19:07:06 +0200
From:      David Naylor <naylor.b.david@gmail.com>
To:        Alexander Motin <mav@freebsd.org>
Cc:        FreeBSD-Current <freebsd-current@freebsd.org>
Subject:   Re: [regression] unable to boot: no GEOM devices found.
Message-ID:  <201104131907.12368.naylor.b.david@gmail.com>
In-Reply-To: <4DA4B247.6010901@FreeBSD.org>
References:  <mailpost.1302585106.8448174.20731.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw> <201104122132.23809.naylor.b.david@gmail.com> <4DA4B247.6010901@FreeBSD.org>

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[-- Attachment #1 --]
On Tuesday 12 April 2011 22:12:55 Alexander Motin wrote:
> David Naylor wrote:
> > On Tuesday 12 April 2011 08:17:51 Alexander Motin wrote:
> >> David Naylor wrote:
> >>> I am running -current and since a few days ago (at least 2011/04/11) I
> >>> am unable to boot.
> >>> 
> >>> The boot process stops when it looks to find a bootable device.  The
> >>> prompt (when pressing '?') does not display any device and yielding one
> >>> second (or more) to the kernel (by pressing '.') does not improve the
> >>> situation.
> >>> 
> >>> A known working date is 2011/02/20.
> >>> 
> >>> I am running amd64 on a nVidia MCP51 chipset.
> >> 
> >> MCP51... again...
>
> +ata2: reiniting channel ..
> +ata2: SATA connect time=0ms status=00000113
> +ata2: reset tp1 mask=01 ostat0=58 ostat1=00
> +ata2: stat0=0x50 err=0x01 lsb=0x00 msb=0x00
> +ata2: reset tp2 stat0=50 stat1=00 devices=0x1
> +ata2: reinit done ..
> +unknown: FAILURE - ATA_IDENTIFY timed out LBA=0
> 
> As soon as all devices detected but not responding to commands, I would
> suppose that there is something wrong with ATA interrupts. There is a
> long chain of interrupt problems in this chipset. I have already tried
> to debug one case where ATA wasn't generating interrupts at all.
> Unfortunately, without success -- requests were executing, but not
> generating interrupts, it wasn't looked like ATA driver problem.
> 
> What's about possible candidate to revision triggering your problem, I
> would look on this message:
> +pcib0: Enabling MSI window for HyperTransport slave at pci0:0:9:0
> 
> At least it is recent (SVN revs 219737,219740 on 2011-03-18 by jhb) and
> it is interrupt related.

I reverted those two revs and everything works again.  

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