As Requested:
root@pve-test:~# ls -al /dev/dm*
brw-rw---- 1 root disk 253, 0 Feb 5 12:53 /dev/dm-0
brw-rw---- 1 root disk 253, 1 Feb 5 12:53 /dev/dm-1
root@pve-test:~#
root@pve-test:~# dmsetup ls
pve-swap (253:0)
pve-root (253:1)
root@pve-test:~#
root@pve-test:~# lsblk
NAME...