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Labs

Working with LVM Storage

In this lab, we’re going to go over the LVM management tool. These are skills that will serve you well in your career as a Linux sysadmin. Once complete, you’ll have a solid understanding of how to use these tools. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Published
Clock icon Apr 05, 2019

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Table of Contents

  1. Challenge

    Create Physical Devices

    1. Get the names of our disks:

      fdisk -l

    2. Create the physical devices:

      pvcreate /dev/xvdg /dev/xvdf

  2. Challenge

    Create a Volume Group

    Create a volume group on the physical devices we created in the previous task:

    vgcreate RHCSA /dev/xvdg /dev/xvdf

  3. Challenge

    Create a Logical Volume

    Create the Logical Volume:

    lvcreate -n pinehead -L 3G RHCSA
    • -n denotes the name of the LV.
    • -L denotes the size of the LV.
    • RHCSA is the name of the volume group we're creating this LV in.

  4. Challenge

    Format the LV as XFS and Mount It Persistently at `/mnt/lvol`

    1. Format the disk as XFS:

      mkfs.xfs /dev/mapper/RHCSA-pinehead

    2. Create a mount point:

      mkdir /mnt/lvol

    3. Get the UUID:

      blkid

    4. Copy the UUID, and edit /etc/fstab.

    5. Create a new line that looks like:

      UUID="THE-UUID-YOU-COPIED" /mnt/lvol xfs defaults 0 0

    6. Save and exit, and then run:

      mount -a

  5. Challenge

    Grow the Mount Point by 200 MB

    1. To grow the LV, run:

      lvextend -L+200M /dev/RHCSA/pinehead

      To have the LVM tools automatically resize the filesystem, you could pass the -r or --resizefs flags.

    2. Another way to resize the filesystem is by running:

      xfs_growfs /mnt/lvol
A Cloud Guru - Labs - Working with LVM Storage
Author
A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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