lvextend --resize does not resize ext4 based underlying filesystem

Issue

• After executing the 'lvextend' command with the '-r' option:

#lvextend -L <size> -r -v /name/of/logical-volume

• The ext4 filesystem should Auto-resize itself instead of manually performing 'resize2fs' after performing 'lvextend'.
• While checking for filesystem features:

# tune2fs -l /name/of/logical-volume
tune2fs 1.39 (29-May-2006)
tune2fs: Filesystem has unsupported feature(s) while trying to open /name/of/logical-volume
Couldn't find valid filesystem superblock.