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SubjectRe: Initrd problem with 2.6 kernel
Date
H. J. Lu <hjl@lucon.org> 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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