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