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Subject: How to create thin pool lvm

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I realized I was running out of space on my current partition and decided to create an lvm group with a single thin pool volume on it. Unfortunately, I can't seem to figure out how to do this and the way I'm currently trying is unsupported by the kernel (interestingly enough.) Searching, using modprobe with the keywords "mapper" or "device" is not turning anything up either.
Note that the UUIDs were changed for anticracker reasons but everything else is correct.

Code:

sudo lvm
lvm> pvcreate --pvmetadatacopies 2 /dev/sda4
lvm> vgcreate --clustered n --maxlogicalvolumes 7 --maxphysicalvolumes 255 --vgmetadatacopies 2 sda44 /dev/sda4
lvcreate -a ay --chunksize 512KiB -L 400G -V 773.92G --thinpool sda44
  Cannot read thin-pool target version.
  thin: Required device-mapper target(s) not detected in your kernel
lvm> lvdisplay
lvm> pvdisplay
  --- Physical volume ---
  PV Name              /dev/sda4
  VG Name              sda44
  PV Size              773.93 GiB / not usable 4.00 MiB
  Allocatable          yes
  PE Size              4.00 MiB
  Total PE              198124
  Free PE              198124
  Allocated PE          0
  PV UUID              xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
lvm> vgdisplay
  --- Volume group ---
  VG Name              sda44
  System ID           
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  1
  VG Access            read/write
  VG Status            resizable
  MAX LV                7
  Cur LV                0
  Open LV              0
  Max PV                255
  Cur PV                1
  Act PV                1
  VG Size              773.92 GiB
  PE Size              4.00 MiB
  Total PE              198124
  Alloc PE / Size      0 / 0 
  Free  PE / Size      198124 / 773.92 GiB
  VG UUID              xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
lvm>


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