dmsetup software package provides Linux Kernel Device Mapper userspace library, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install dmsetup
dmsetup is installed in your system.
Make ensure the dmsetup package were installed using the commands given below,
$ sudo dpkg-query -l | grep dmsetup *
You will get with dmsetup package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Administration Utilities |
| Package | dmsetup |
| Version | 2:1.02.74-8 |
| Description | Linux Kernel Device Mapper userspace library |
| Sub Section | Admin |