Re: lvm and multiboot
> So if I understand it correctly it is not multiboot situation.
Indeed. For multiboot, you can use the same setup if all your
alternative boots understand LVM (e.g. various versions of GNU/Linux),
or if your other OSes are run from within GNU/Linux (e.g. with
VirtualBox). That's usually the preferable solution. If you really
insist on booting directly into some other OS (rather than via
a virtual machine), then you'll need to restrict LVM to a smaller
partition and create addition partitions for the other OSes.