On my site I've only really included how-to's for stuff I use myself (well, I had to start somewhere
). I do intend adding more in the future and LVM is one such topic that I know many people are interested in.
I'd never heard of Serviio Media server until I read your post so I'm probably not the best person to provide a how-to.
But, if you're saying you would like to write one and for me to host it for you then I'll happily discuss it. The NTV550 Tagging Guide
was written by one of the guru's from the netgear forum who is far more knowledgeable on tagging than I am.