To resize an LVM partition in VirtualBox, first increase the virtual disk size using the command VBoxManage modifyhd <UUID> --resize <new size in MB>. Then, within the virtual machine, use commands like lvextend to expand the logical volume and resize2fs to resize the filesystem.

Resizing LVM Partition in VirtualBox

To resize an LVM partition in a VirtualBox virtual machine, follow these steps:

Step 1: Resize the Virtual Disk

1. Shutdown the VM: Ensure your virtual machine is powered off.
2. Open Command Line: Navigate to the VirtualBox installation directory.
3. Run Resize Command: Use the following command to resize the disk:
   VBoxManage modifyhd <UUID> --resize <new size in MB>
   Replace <UUID> with your virtual disk's UUID and <new size in MB> with the desired size.

Step 2: Modify the Partition

1. Boot the VM: Start your virtual machine.
2. Check Current Partitions: Use the command:
   df -lh
   Identify the partition you want to resize, typically /dev/mapper/ubuntu--vg-ubuntu--lv.
3. Use fdisk: Run:
   fdisk /dev/sda
   • Type n to create a new partition.
   • Use default values for the partition number and first sector.
   • Set the last sector to use all available space.
4. Write Changes: Type w to write the changes.

Step 3: Resize the LVM

1. Create Physical Volume: Run:
   pvcreate /dev/sdaX
   Replace sdaX with your new partition from fdisk above.
2. Extend the Volume Group: Use:
   vgextend <vg-name> /dev/sdaX
   Replace <vg-name> with your volume group name.
3. Extend the Logical Volume: Run:
   lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv

Step 4: Resize the Filesystem

1. Resize the Filesystem: Finally, execute:
   resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

After completing these steps, your LVM partition should be successfully resized, allowing you to utilize the additional space.