How to create LVM Partitions ?

LVM partition has three levels of structure as below

1. Physical volume
2. Volume Group
3. Logical volume

Step: 1 – Physical volume creation

First, we have to create the physical volume before creating the volume group, Now I’m going to make physical volume partitioning  /dev/ sdb from block storage(RAW HDD).

• Shell command: fdisk -l   this command used for view the all mounted HDD’s

• Shell command: pvcreate /dev/sdb this command used to create the physical volume from raw disk and it can be any disk-like physical HDD, VMware VMDK, etc.

• Shell command: “pvs or pvdisplay ” to view the physical volumes

Step: 2 –  Volume Group creation

• Shell command: “vgcreate vg_secureethics /dev/sdb ” to create the volume group

                    vg_secureethics –> this is volume group name and it can be any name

• Shell command: “vgs  or vgdispaly ” to view the volume groups

Step: 3 –  Logical Volume  creation

• Shell command: “lvcretae -L 4G -n lv_secureethics vg_secureethics ” to create logical volume

• Shell command: “lvsor lvdisplay ” to view the logical volumes

Step: 4 – Make File systems

Shell command: “mkfs.ext4 /dev/mapper/vg_secureethics-lv_secureethics_data ” to make the filesystems for usable partition and You can use any format like ext2,ext4,xfs,ntfs,etc.

Step: 5 – Mount/Add the LVM partition to fstab

Here I’m going to mount the partition /dev/mapper/vg_secureethics-lv_secureethics_data to  /data

• Shell command: “mount /dev/mapper/vg_secureethics-lv_secureethics_data /data ” to mount the lvm partition

• Edit the fstab file “vi /etc/fstab ” this is step mount the partition permanently on the server

“/dev/mapper/vg_secureethics-lv_secureethics_data /data ext4 defaults 0 0 “add this line end of the file  into fstab