Re: Initrd problem with 2.6 kernel

[Herbert Xu]

H. J. Lu <hjl@xxxxxxxxx> wrote:
> There is a chicken and egg problem with initrd on 2.6. When
> root=/dev/xxx is passed to kernel, kernel will call try_name, which
> uses /sys/block/drive/dev, to find out the device number for ROOT_DEV.
> The problem is /sys/block/drive may not exist if the driver is loaded
> by /linuxrc in initrd. As the result, /linuxrc can't use
> /proc/sys/kernel/real-root-dev to determine the root device number.

You can replicate the sysfs probing in userspace.  I did that in
Debian initrd-tools 0.1.51.
-- 
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Email:  Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
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