How To Install device-mapper-event on CentOS 8

device-mapper-event is Device-mapper event daemon

Introduction

In this tutorial we learn how to install device-mapper-event on CentOS 8.

What is device-mapper-event

This package contains the dmeventd daemon for monitoring the state of device-mapper devices.

We can use yum or dnf to install device-mapper-event on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install device-mapper-event.

Install device-mapper-event on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install device-mapper-event using dnf by running the following command:

sudo dnf -y install device-mapper-event

Install device-mapper-event on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install device-mapper-event using yum by running the following command:

sudo yum -y install device-mapper-event

How To Uninstall device-mapper-event on CentOS 8

To uninstall only the device-mapper-event package we can use the following command:

sudo dnf remove device-mapper-event

device-mapper-event Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/45/ffede3d41c7705061eb08bf69c674c9e322270
/usr/lib/systemd/system/dm-event.service
/usr/lib/systemd/system/dm-event.socket
/usr/sbin/dmeventd
/usr/share/man/man8/dmeventd.8.gz

References

Summary

In this tutorial we learn how to install device-mapper-event on CentOS 8 using yum and dnf.