[gentoo-user] Question about making a tarball

[Dale]

I try to keep a "up to date" stage 4 tarball here in my system just in
case.  I basically did the creation just like I would if I were booted
from the CD.  I created /mnt/gentoo/ on my system, extracted a stage 3
there, then chroot in and create a stage 4 tarball.  I have one weird
thing tho that has me confused.  When it creates the stage 4 tarball, it
is in /mnt/gentoo.  Today I unpacked the stage 4 so that I could update
it and when I do a tar xjpf stage4 -C /mnt/gentoo, it actually looks
like this, /mnt/gentoo/mnt/gentoo/ which is not what I am looking for. 
It doesn't matter on a running system, but it would if I were trying to
rescue myself.

How do I tell tar when I am making the tarball to look at /mnt/gentoo/
as it start point, root directory if you will?  I read the man page but
suspect I am missing it somewhere.  There has to be a way since it is
done that way for the stage 3 tarball.

Thanks

Dale

:-)  :-)