How to merge lv_home and lv_root
unmount and remove 2nd volume # umount /dev/vg_groupname/lv_volumename # lvremove /dev/vg_groupname/lv_volumename extend 1st logical volume # lvextend -l +100%FREE /dev/lv_groupname/lv_root extend file system # resize2fs /dev/vg_groupname/lv_root