Re: how to cleanly remove the chroot environment?

[Eduardo M KALINOWSKI <ekalin@laposte.net>]

avishai escreveu:
> Hello all,
>
> Following my recent finding that flash media can *finally* be played
> on my iceweasel (and when I say finally, I mean: DAMN, that took a
> long time)
And which was the solution you used to achieve that? Gnash? 
nsplugginwrapper? I'm interested in knowing that, and I believe so are 
others.

> , i see no need to have an extra 32bit system installed. So
> I'm thinking about removing it completely, however a bit of googling
> on it beforehand led me to this:
>
>  "Be VERY careful if you decide to remove the chroot at some point in
> the future. Any filesystems you have mounted with bind MUST be
> unmounted before you rm -f the chroot. If you fail to do this you'll
> remove your valuable data (/me sniff's and wipes away a tear) "
> http://www.debian-administration.org/articles/356
>
> Anyone care to explain this one to me before I throw away all that
> "valuable data"?
> Cheers,
> Avishai.
>   
That means that if you do rm -rf /var/chroot/sid-ia32, and /home is also 
visible unser /var/chroot/sid-ia32/home, then the rm will try to delete 
/var/chroot/sid-ia32/home, which will delete the /home (since the two 
are the same, mounted in different places). So you should unmount this 
and all other bind mounts before doing rm -rf /var/chroot/sid-ia32.

> some extra data:
> $ mount
> /home on /var/chroot/sid-ia32/home type none (rw,bind)
> /tmp on /var/chroot/sid-ia32/tmp type none (rw,bind)
> /dev on /var/chroot/sid-ia32/dev type none (rw,bind)
> /proc on /var/chroot/sid-ia32/proc type none (rw,bind)
>   
Do a umount /var/chroot/sid-ia32/home (and similar for others) before.