The recipe you selected does not contain a separate partition for /boot. This is normally needed to allow you to boot the system when using LVM.
Tasesfart i tferneḍ ulac deg-s aḥric i yettuɛezlen /boot. Ayagi yettusra deg tuget akken ad ak·akem-yeǧǧ ad tesnekreḍ anagraw mi ara tesqedceḍ LVM.