> On Sunday, August 01, 2010 10:21:16 pm Donald Parsons wrote:
>> On Sun, 2010-08-01 at 21:38 -0600, Bjorn Helgaas wrote:
>>> On Sunday, August 01, 2010 08:31:02 pm Donald Parsons wrote:
>>>> 2.6.35 still fails to boot for me, as first reported here:
>>>>
http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/01144.html
>>>>
>>>> I've manually bisected it down to around May 20 between
>>>> 2.6.34-git4 (boots) and 2.6.34-git5 (boot fails)
>>>> Also -git[23] boot, and -git8, -rc[126], rc6-git[136] all fail.
>>>>
>>>> Unfortunately first time I tried was with 2.6.35-rc6 and
>>>> it failed to boot.
>>>>
>>>> Failure when switching from initramfs to real /root?
>>>> Removing kernel "quiet" param appears to show several
>>>> lines listing:
>>>>
>>>> usb drives/hubs? followed by
>>>> dracut switching root (when booting works)
>>>> or
>>>> usb drives/hubs? followed by
>>>> (missing dracut... line)
>>>> No root device found
>>>> Boot has failed, sleeping forever. (when it does not boot)
>>>>
>>>> Grub, typical entry:
>>>> title Fedora (2.6.35)
>>>> root (hd0,0)
>>>> kernel /vmlinuz-2.6.35 ro
>>>> root=UUID=686dc496-8814-4c36-8fb7-5ded2916e825 rhgb
>>>> SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=us
>>>> rdblacklist=nouveau init=/sbin/bootchartd
>>>> initrd /initramfs-2.6.35.img
>>>>
>>>>
>>>> My boot failure seems to be different than other two reported
>>>> in the thread "2.6.35-rc6-git6: Reported regressions from 2.6.34"
>>>> under Bug #16173 and #16228
>>>
>>> Will it boot with the "pci=nocrs" option? If so, please open a
>>
>> No, I tried this on a few attempts when I saw it mentioned under
>> bug #16228. But it had no effect/benefit. Sorry, I should have
>> mentioned this.
>>
>>> report at
https://bugzilla.kernel.org, mark it a regression, assign
>>> it to me, and attach the complete dmesg log. And please respond to
>>> this thread with a pointer to the bugzilla.
>>>
>>> Otherwise, a complete console log should have a clue. The best
>>> thing would be a log from a serial console or netconsole, with
>>> "ignore_loglevel".
>>
>> Maybe I will try netconsole tomorrow. But is Ethernet up when
>> this boot failure happens? I think not, since initramfs should
>> not need networking.
>
> Netconsole has special kernel support that doesn't require the normal
> networking stack to be configured, so it works quite early. You
> would want to build your networking driver into the kernel for the
> most benefit.
>
> If that doesn't work, you could try capturing the log on VGA with a
> digital camera or video camera, possibly with "boot_delay=" to
> slow things down.
>
>> Should I try building sata driver into kernel?
>
> I doubt that will make a difference. It seems like the problem
> is that we don't find your root filesystem, probably because there's
> something wrong with the HBA leading to that device. For example,
> maybe the PCI core mistakenly moved or disabled the adapter, or
> there's some problem with its interrupt.
>
> Bjorn
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