lvm - logical volume manager

on Debian Lenny

(to re-read partion table, use: hdparm -z)

apt-get install lvm2

setup raid on hard discs

mdadm --create ...

pvcreate /dev/md0
vgcreate lvm-raid -s 16M /dev/md0

-s (PhysicalExtentSize) is 4MB by default.
lvm2 does not have restrictions nor will the I/O
be slowed down, but the tools will be slower.


http://www.gagme.com/greg/linux/raid-lvm.php
http://www.linuxhaven.de/dlhp/HOWTO/DE-LVM-HOWTO-1.html
http://www.pro-linux.de/t_system/lvm.html