Bug#283919: initrd-tools: Should warn if root device is not found

[Piotr Roszatycki <dexter@debian.org>]

Package: initrd-tools
Version: 0.1.74
Severity: wishlist

I'd like to see some warning, if /proc/sys/kernel/real-root-dev is equal 0. That
means no root device was found and the message would be very helpful.

I've spend an hour trying to reboot the kernel 2.6 with root=/dev/ida/c0d0p2
parameter. I didn't know the kernel doesn't understand such parameter
and I've found the real reason by my own inspection in initrd's mini-shell.

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (900, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.9-1-686
Locale: LANG=pl_PL, LC_CTYPE=pl_PL (charmap=ISO-8859-2)

Versions of packages initrd-tools depends on:
ii  coreutils [fileutils]         5.2.1-2    The GNU core utilities
ii  cpio                          2.5-1.1    GNU cpio -- a program to manage ar
ii  cramfsprogs                   1.1-6      Tools for CramFs (Compressed ROM F
ii  dash                          0.5.1-3    The Debian Almquist Shell
ii  fileutils                     5.2.1-2    The GNU file management utilities 
ii  util-linux                    2.12h-3    Miscellaneous system utilities

-- no debconf information