Lab
A Cloud Guru

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.*

Try for free Contact sales

Path Info

Level

Intermediate

Duration

30m

Published

Apr 05, 2019

Challenge

Create Physical Devices
1. Get the names of our disks:
```
fdisk -l
```
2. Create the physical devices:
```
pvcreate /dev/xvdg /dev/xvdf
```
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
```
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.
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
```
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
```

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!

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.