In this hands on lab, we will work with LVM in SUSE Linux Enterprise as we create a volume group and then extend that group to increase the available size of the logical volume.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Create a Linux LVM Partition on Each of the Disks
Get the drive names:
lsblkYour output should match the below (the disks you’ll be partitioning are
nvme0n1,nvme1n1, andnvme2n1):NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme2n1 259:0 0 2G 0 disk nvme1n1 259:1 0 2G 0 disk nvme0n1 259:2 0 2G 0 disk nvme3n1 259:3 0 10G 0 disk ├─nvme3n1p1 259:4 0 2M 0 part ├─nvme3n1p2 259:5 0 20M 0 part /boot/efi └─nvme3n1p3 259:6 0 10G 0 part /Run
fdiskagainst the first of the drives that has no partitions listed:sudo fdisk /dev/nvme0n1 Enter n to create a new partition, Then p for primary Then 1 for the partition number. Hit Enter for first and last sector since we will use the whole drive Enter p to see the partition.Change the partition type label to Linux LVM:
Enter t to set the label Then L to get a list of possible types Then 8e for Linux LVM The p to review the changes Then w to write the changesHave the kernel rescan the partition table, and then list partitions to verify:
sudo partprobe lsblkRepeat this process for the other two disks.
When finished with all three disks, run
lsblkagain to confirm the partitions are correct:NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme2n1 259:0 0 2G 0 disk └─nvme2n1p1 259:7 0 2G 0 part nvme1n1 259:1 0 2G 0 disk └─nvme1n1p1 259:11 0 2G 0 part nvme0n1 259:2 0 2G 0 disk └─nvme0n1p1 259:8 0 2G 0 part nvme3n1 259:3 0 10G 0 disk ├─nvme3n1p1 259:4 0 2M 0 part ├─nvme3n1p2 259:5 0 20M 0 part /boot/efi └─nvme3n1p3 259:6 0 10G 0 part /
- Create a Physical Volume and a Volume Group Named `VolumeGroup0`
Create a physical volume on the first drive:
sudo pvcreate /dev/nvme0n1p1Verify the physical volume was created:
sudo pvdisplayCreate the volume group:
sudo vgcreate VolumeGroup0 /dev/nvme0n1p1Verify it was created:
sudo vgdisplay
- Add the Second Disk to the Volume Group and Then Create a Logical Volume, Create an XFS Filesystem, and Mount It
Extend the volume group to the second drive — this will create the necessary physical volume:
sudo vgextend VolumeGroup0 /dev/nvme1n1p1Get the size, which should be 3.99 GiB:
sudo vgdisplayCreate the logical volume from the volume group:
sudo lvcreate -L+3.99GB -n "backups" VolumeGroup0Create the filesystem on the volume:
sudo mkfs.xfs /dev/VolumeGroup0/backupsCreate a mount point and mount the volume:
sudo mkdir /mnt/backups sudo mount /dev/VolumeGroup0/backups /mnt/backups/Create a
datafile in the mount location:sudo touch /mnt/backups/data ls -l /mnt/backups
- Add the Third Disk to the Volume Group, Extend the Size of the Logical Volume, and Grow the Filesystem to Use the Added Space
Add in the third drive to the volume group — this will also create the physical volume:
sudo vgextend VolumeGroup0 /dev/nvme2n1p1Grow the logical volume by adding the size of the third disk:
sudo lvextend -L+1.91GB /dev/VolumeGroup0/backupsThen grow the filesystem to use the added space:
sudo xfs_growfs /mnt/backupsVerify
datais still there and that the drive is the correct size:ls -l /mnt/backups df -hTThis should show
5.9Gin theSizecolumn for/dev/mapper/VolumeGroup0-backups.
