QVD Desktop Disk Image Test

A Disk Image (DI) is a qcow2 image that has been created as a virtual disk containing an installed operating system.

QVD uses DIs to serve groups of users that make use of a common set of applications. By using a single image to cater to a number of users, it becomes easier to administer desktop environments for all of your users. It also improves overall security, since a policy can be applied to each group of users.

In this way, if a group of users require a particular application, you can install it once and the change will apply to all of the users that share the same DI. Equally, you can remove an application from an entire group’s desktop environment.

DIs can easily be duplicated, so that you can quickly create additional environments for different subsets of users. By copying a base image, you can edit the copy and provide additional applications or other customizations to a second set of users without having to repeat a full operating system installation.

This test reports the number of disk images that are available in the Shared Storage of the QVD Server Node.

Target of the test : A Quality Virtual Desktop Node

Agent deploying the test : A remote agent

Outputs of the test : One set of results for the QVD that is to be monitored.

Configurable parameters for the test
Parameter Description

Test period

How often should the test be executed.


The host for which the test is to be configured.

QVD User and QVD Password

Provide the credentials of a user possessing root user privileges in the QVD User and QVD Password text boxes.

Confirm Password

Confirm the password by retyping it here.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Disk images

Indicates the number of disk images that are available in the QVD Server Node.


The detailed diagnosis of this measure if enabled, lists the DISK IMAGE ID, VERSION, PATH and DI TAGS.

The detailed diagnosis of the Disk images measure (see Figure 1), lists the DISK IMAGE ID, VERSION, PATH and the DI TAGS.

layer 2 test 1 measure dd

Figure 1 : The detailed diagnosis of the Disk images measure