Tell LVM to resize to the physical partition size.
$ sudo pvresize /dev/sda3Find the actual path of the LVM logical volume. The LV Path is the value needed.
$ sudo lvdisplayTell LVM to extend the logical volume to the new partition size.
$ sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lvFinally resize the filesystem
$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv