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Configuring a Disk Schedule Using Udev Rules

In this hands-on lab, you will use `udev` rules to manage and configure the disk scheduler for a disk attached to the lab system. As part of the workflow, you will identify the disk, check the default scheduler configuration, and collect the unique identifier of each disk. With this information, you will create a `udev` rule to set the disk schedule and confirm it is successfully updated. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 15m
Last updated
Clock icon Aug 27, 2025

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Table of Contents

  1. Challenge

    Validate Any Local Storage Devices

    1. Identify any secondary storage devices on the system, looking for nvme1n1.
    2. Collect the UUID value for that storage device.
    3. Add the storage device to /etc/fstab using the UUID value.
      • The primary mount point should be /mnt/data.
    4. Check the default scheduler for the identified storage device.

  2. Challenge

    Create a udev Rule to Update the Disk Scheduler

    1. Use udevadm to collect the unique identifier ID_SERIAL_SHORT for the storage device.
    2. Create the udev rule file, called 99-scheduler.rules.
    3. Update the rule file using the ID_SERIAL_SHORT value.
    4. Reload the udev rules and apply the udev rules.

  3. Challenge

    Validate the Changes to the System

    1. Reboot the system.
    2. Confirm the updated disk schedule value is still place.
Pluralsight Skills - Labs - Pluralsight
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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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We will provide the credentials and environment necessary for you to practice right within your browser.

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Follow along with the author’s guided walkthrough and build something new in your provided environment!

Did you know?

On average, you retain 75% more of your learning if you get time for practice.
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