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Description of problem:
If there are multiple partitions labelled "/", and
you boot with "root=LABEL=/", one of the "/" partitions
will be mounted as the root partition.  But it won't
necessarily be the correct one, and the user gets no
indication that there were duplicate labels.


Version-Release number of selected component (if applicable):
mount-2.11y-31.1

How reproducible:
Always

Steps to Reproduce:
1. Install RHEL3 U2 on disk A
2. Remove disk A, insert disk B
3. Install RHEL3 U2 on disk B
4. Insert disk A (both disk A and disk B are attached)
5. Disk A appears as fs0: and disk B as fs1: to EFI
6. Boot from fs0:\efi\redhat; disk A is mounted as /
7. Boot from fs1:\efi\redhat; disk A is mounted as /

Actual Results:  The root filesystem on disk A is mounted as /,
regardless of which kernel was booted.

Expected Results:  The user expectation is that in step 7, disk B is
mounted as /.

A warning about the duplicate labels would be useful.
Or perhaps a chance to choose which one should be
mounted.  Even a message about which partition was
mounted as / would be nice.

Additional info:

RHEL3 U2 does a nice job if two disks are attached and
I install first to disk A, then to disk B.  (The root
on disk A gets labelled "/" and the one on disk B gets
labelled "/1", and the elilo.conf files use the appropriate
labels.

But a careful user often physically unplugs his valuable
disk when installing a new release on a scratch disk.  If
he then reinserts the valuable disk, he ends up in the
situation I describe.

In the case I describe (installing the same release on both
drives), both boots work.  If different releases are installed,
though, the boot in step 7 may NOT work, because the modules
on disk A won't match the kernel on disk B.