[gentoo-user] Merging separate /usr back into / - one last time...

[Tanstaafl]

Hi all,

This was discussed within a couple of threads in the last few months, 
but I wanted to ask for final clarification before I go ahead with this 
(yeah, I know, 'paranoia will destroy ya')...

I'm not afraid of an initramfs any more, but I've decided that I still 
just really don't want one, so I'm looking for the safest & simplest way 
to merge my separate /usr back into /.

The only thing I'm really unsure of is the optimal method and exact 
syntax (ie, trailing slashes? arguments?) for the actual copy of /usr.

Is rsync -a enough for my relatively simple system setup, or would using 
any or all of the other options suggested in those threads be 
safer/better? Specifically:

-a, or -axAHX, or -apogXx, or -PvasHAX

or should I go with a combined -apogsvxAHPX ?

So, here's the plan, please check me...

1. Boot off of the latest gentoo LiveDVD

2. Mount / and create new /usr directory

mount /dev/sda3 /mnt/gentoo/
mkdir /mnt/gentoo/usr

3. Mount old /usr to be moved/merged

vgscan
vgchange -a y
mount /dev/vg/usr /mnt/gentoo/oldusr

4. Copy /oldusr to /usr

rsync -a? /mnt/gentoo/oldusr/ /mnt/gentoo/usr/

Are the trailing slashes required/important/necessary?

Which arguments should I use?

5. Edit /etc/fstab and comment/remove the /usr line

nano -wc /mnt/gentoo/etc/fstab

#/dev/vg/usr       /usr        reiserfs        noatime         0 0

6. Unmount mounted filesystems

umount /mnt/gentoo/oldusr
umount /mnt/gentoo

7. Reboot into new system

Done?

I'm pretty sure that:

1. There is no need to chroot into the real system during this process,

and

2. I only need to mount / and the old /usr, no need to mount anything
    else (/proc, /sys, /var, /home, activating swap, etc)

Correct?

Thanks