speaking up LVM

[Thilo Six]

Hello

Now after a suppestion from Alexander Skwar i have tried out LVM and
installed edgy in there.

...and indeed LVM rocks.  ;)

Now i have just some basic question about the possibilities with LVM:

scenario 1:
i have setup a physikal volume and a volume group in there with plenty
space.
Now i create a logical volume for / (lets say 1,5 gig) and and one for
/var (500megs). both with ext3.
Now i need to make / and /var bigger.
Is it really just some cli hacks to accomplish that, or are there any
pitfalls?

scenario 2:
same setup as above
I would like to move the content of /var lv into / lv directly and use
the freed space for / lv (reorder partition setup).
Possible without reinstalling?

scenario 3:
i have put my backup into lvm, after system crash i need to put things
back (boot from livecd, or something).
How about the difficulty to recover data from the backup since it is an
lvm. lvm adds extra complexity which increase by definition error rate.
e.g. I am "allways" able to access the backup partition from a live cd,
it only needs to be mounted.
Which requirements must be fullfilled in that case with lvm?


TIA Thilo
-- 
i am on Ubuntu 2.6 KDE
- some friend of mine

gpg key: Ox4A411E09