Setting up LVM (Logical Volume Management) in Ubuntu

In this article, we are grouping four SSDs into two logical drives, where each group consists of two SSDs.

1. Install LVM

   $ sudo apt-get update
   $ sudo apt-get install lvm2
   

2. Configure LVM

   $ sudo su
   $ pvcreate /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
   $ vgcreate vg001 /dev/sdb1 /dev/sdc1
   $ vgcreate vg002 /dev/sde1 /dev/sdd1
   $ vgdisplay
   

3. Check whether vg001 and vg002 exist and check the size (X.X TiB) of each group.

   $ lvcreate -L [SIZE OF vg001]t -n lv001 vg001
   $ lvcreate -L [SIZE of vg002]t –n lv002 vg002
   $ fdisk -l
   

   /dev/mapper/vg001-lv001 and /dev/mapper/vg002-lv002 should appear.

   $ mkfs.ext4 /dev/vg001/lv001
   $ mkfs.ext4 /dev/vg002/lv002
   $ mkdir /data1 /data2
   $ vi /etc/fstab
   

   /dev/vg001/lv001            /data1               ext4    defaults 0       0
   /dev/vg002/lv002            /data2               ext4    defaults 0       0
   

   $ mount -a
   $ df -h
   

4. Check the mount status of /data1 and /data2.