Resize LVM Partition in Virtual Box

Here's a note on how to resize LVM partition in VirtualBox
1. VBoxManage modifyhd vdi_path --resize new_size_in_mb
2. Resize the disk.
    a. Run the VM
    b. Open terminal/console and execute command below
        + df
           Write down the logical mapping, in my case it is /dev/mapper/vg_iplus-lv_root
     

     
        + fdisk -l
           Write down the Device name, in my case /dev/sda2

     
 + fdisk /dev/sda
     The next steps will delete the partition to resize, recreate the partition and make it primary. Then resize the partition to the new size and write the changes.
 + Still in fdisk, delete the partition
     input: d
 + Still in fdisk, select the device to partition number. In my case it is 2 (/dev/sda2)
     input: 2
   

  + Still in fdisk, create new partition and select the same partition as in previous steps (e.g. 2)
     Input: n
     Input: 2

  + Set the size for the new partition, set it to occupy all available space (or as preferred)
      Input: enter (twice to set default size)

  + Commit the changes
     Input: w

   + Reboot server
      Command: reboot

   + Resize the physical volume
      Command: pvresize /dev/sda2
     /dev/sda2 refers to the partition changed previously

   + Verify the new size, make sure the new size is applied
       Command: pvscan

   + Extend the logical volume to take all free space
      Command: lvextend -l +100%FREE /dev/mapper/fedora-root

   + Resize the file system
      Command: resize2fs /dev/mapper/vg_iplus-lv_root

   + Verify the new changes

      Command: df

And we're done! :)

Reference:
https://blog.jyore.com/2013/06/virtualbox-increase-size-of-rhelfedoracentosscientificos-guest-file-system/