The lvcreate command can be used to create an LVM logical volume. In this example, a 1 GB logical volume named myLV is created from space in the volume group named myVG. This assumes that a volume group named myVG has been created.

~]# lvcreate --size 1G --name myLV myVG

The lvdisplay command can be used to verify the logical volume has been created.

~]# lvdisplay
---Logical volume---
LV Path               /dev/myVG/myLV
LV Name               myLV
VG Name               myVG
LV UUID               EuBJ3c-Q8EU0M5ef-Qvip-KeyH-m2Sc-MGelKe
LV Creation host,time localhost.localdomain, 2013-10-11 15:40:12 -0500
LV Status             available
# open                1
LV Size               99.94 GiB
Current LE            3198
Segments              3
Allocation            inherit
Read ahead sectors    auto
- currently set to    256
Block device          253:9

Next, the mkfs command can be used to create a file system on myLV. In this example, the ext4 file system is created on myLV.

~]# mkfs.ext4 /dev/myVG/myLV

Now, myLV can be mounted. In this example, myLV is mounted to the /var directory.

~]# mount.ext4 /dev/myVG/myLV /var