blkdeactivate command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

blkdeactivate: command not found

or when using sudo you get the following error message

sudo: blkdeactivate: command not found

Solutions to blkdeactivate: command not found

How To Fix blkdeactivate: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu blkdeactivate is provided by dmsetup package.

dmsetup is:

The Linux Kernel Device Mapper is the LVM (Linux Logical Volume Management) Team’s implementation of a minimalistic kernel-space driver that handles volume management, while keeping knowledge of the underlying device layout in user-space. This makes it useful for not only LVM, but software raid, and other drivers that create “virtual” block devices.

This package contains a utility for modifying device mappings.

To fix this problem, we can install more using the command below.

sudo apt-get -y install dmsetup

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install dmsetup.

sudo apt -y install dmsetup

Or if you have aptitude installed you can use the following command.

sudo aptitude install dmsetup

Summary

In this tutorial we learn how to fix blkdeactivate command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.