Working with Logical Volumes

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Working with Logical Volumes

Logical Volume Management (LVM) allows block devices such as partitions and raw disks to be grouped together to provide flexible storage on a Linux host. In this hands-on lab, we cover creating physical volumes, grouping them into a volume group, creating logical volumes from the volume group, and creating and mounting file systems on the logical volumes. We also resize logical volumes, create snapshots, and restore snapshots.

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Lab Info

Level

Intermediate

Last updated

Sep 09, 2025

Duration

30m

Challenge

Create Two Logical Volumes Based on the Information Provided in the Instructions
Once connected via ssh, elevate your privileges to root:
```
sudo -i
```
1. Create physical volumes out of the following partitions:
- xvdf1
- xvdf2
- xvdf3
- xvdf4
1. Create a volume group called user_vg out of the physical volumes.
2. Create a logical volume named dev_lv that is 200 MB.
3. Create a logical volume named test_lv that is 64 extents.
Challenge

Create File Systems on the `dev_lv` and `test_lv` Logical Volumes
1. Create an ext4 file system on dev_lv.
2. Create an xfs file system on test_lv.
3. Create two mount points: /mnt/dev and /mnt/test.
4. Add entries for dev_lv and test_lv to /etc/fstab.
5. Mount the dev_lv and test_lv file systems on /mnt/dev and /mnt/test respectively.
Challenge

Resize the `graphics_lv` and `docs_lv` Logical Volumes
1. Increase the graphics_lv logical volume by 50 extents.
2. Shrink the docs_lv logical volume by 100 MB.
Challenge

Perform a Snapshot of the `prod_lv` Logical Volume and Restore the `stage_snap` Snapshot to Its Origin Volume
1. Create a snapshot of the prod_lv logical volume called prod_snap that has a size of 50 MB.
2. Restore the stage_snap snapshot to its origin volume.
3. Unmount /mnt/staging.
4. Merge the stage_snap snapshot with its origin volume.

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