The main LVM resource available
If you can read German, this already contains a lot of information
Peter.Wuestefeld@resnova.de is translating the German HOWTO into English. It appears that they will soon be investing lots of time in it. If you doubt our HOWTO or miss something, please try their effort.
Since the Linux LVM is almost an exact workalike of the HP/UX implementation, their documentation is very useful to us as well. Very good stuff.