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.*
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Validate Any Local Storage Devices
- Identify any secondary storage devices on the system, looking for
nvme1n1. - Collect the
UUIDvalue for that storage device. - Add the storage device to
/etc/fstabusing theUUIDvalue.- The primary mount point should be
/mnt/data.
- The primary mount point should be
- Check the default scheduler for the identified storage device.
- Identify any secondary storage devices on the system, looking for
- Create a udev Rule to Update the Disk Scheduler
- Use
udevadmto collect the unique identifierID_SERIAL_SHORTfor the storage device. - Create the
udevrule file, called99-scheduler.rules. - Update the rule file using the
ID_SERIAL_SHORTvalue. - Reload the
udevrules and apply theudevrules.
- Use
- Validate the Changes to the System
- Reboot the system.
- Confirm the updated disk schedule value is still place.
