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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
Last updated
Clock icon Aug 29, 2025

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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
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