Let’s automate the LVM partition with a Python script.

What is LVM?

In Linux, Logical Volume Manager (LVM) is a device mapper framework that provides logical volume management for the Linux kernel.

Goal of Program

To create a python script that can automate the LVM partitioning and related stuff. In the program, we’ll create a menu that will do the following things:

1. To create PV (Physical Volume)
2. To create a volume group
3. To Create Logical Volumes
4. To create a new partition using fdisk -l
5. To mount the newly created partition
6. to display Volume Group
7. To display Logical Volume
8. To display all hard-disks connected to the system
9. exit

Head over to the program:

import os
os.system("tput setaf 6")
print("\t\t\tLVM Automation Program")
mycheck=True
mayexit=True
while(mayexit):
    os.system("tput setaf 3")
    print("\n")
    print("")
    print("\t1. To create PV (Physical Volume) ")
    print("\t2. To create a volume group")
    print("\t3. To Create Logical Volumes")
    print("\t4. To create a new partition using fdisk -l")
    print("\t5. To mount the all partition")
    print("\t6. To Display Volume Group")
    print("\t7. To Display Logical Volume")
    print("\t8. All Hard-Disk List Connected To System")
    print("\t9. Exit")
    print("")
    mycheck=True
    os.system("tput setaf 7")
    print("\n")
    
    a=int(input("Select any option from the above menu"))
while(mycheck==True):
        if(a==1):
            os.system("fdisk -l")
            c=input("Enter the device name : ")
            os.system("pvcreate {}".format(c))
            print("physical volume created")
            break
        elif(a==2):
            vgname=input("Enter the volume group name: ")
            parti = input("enter the storage device: ")
            os.system("vgcreate {} {}".format(vgname,parti))
            print("\nvolume group created\n\n")
            os.system("vgdisplay {}".format(vgname))
            print()
            break
        elif(a=3):
            lvmsize=int(input("Enter the logical volume size you want to create : "))
            lvmname=input("Enter the name of logical volume: ")
            print("creating the logical volume of size-{} GIB with name- {}".format(lvmsize,lvmname))
            os.system("lvcreate --size {}G --name {} {}".format(lvmsize,lvmname,vgname))
            print("\tLVM of size-{}GB with name- {} created successfully".format(lvmsize,lvmname))
            os.system("lvdisplay")
            print()
            input("Press enter for LVM menu: ")
            break
elif(a==4):
            parti = input("Enter the device name for which you want to create the partition: ")
            os.system("fdisk {}".format(parti))
            input("press enter to continue")
            break
        elif(a==5):
            os.system("df -h")
            input("Press enter to continue")
            break
        elif(a==6):
            os.system("vgdisplay")
            input("Press enter to continue")
            break
        elif(a==7):
            os.system("lvdisplay")
            input("Press enter to continue")
            break
        elif(a==8):
            os.system("fdisk -l")
            input("Press enter to continue")
            break
        elif(a==9):
            mayexit=False
            break

Start of the program

After selecting the option number 6

On selecting the option 7 from menu (display logical volume)

On selecting the option number 8 from the menu

on exit