VirtualBox: extend partition

Question

I have virtualbox-4.1.0 with centos-5.6 installed in. Now I would like to extend the VM image, which I previously allocated for virtual machine installation, it was 8Gb, that\'s

Answer 1

I'm using a CentOS7 virtualbox, and I finally enlarged my partition /dev/mapper/centos-root - gparted doesn't work for me because I do not have a desktop on CentOS7 virtualbox.

1. Power off your CentOS virtual machine
2. Go into the directory of your *.vdi image. If you don't know where it is, look at your Virtualbox Manager GUI virtualbox -> settings -> storage -> *.vdi -> location e.g. mine is located under ~/VirtualBox VMs/CentOS7/CentOS.vdi

3. Back up your image just in case anything goes wrong

   $ cp CentOS7.vdi CentOS7.backup.vdi

4. Resize your virtual storage size, e.g. 200 GB

   $ VBoxManage modifyhd CentOS7.vdi --resize 204800

5. Power on your CentOS virtual machine, issue

   $ sudo fdisk -l

   Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     1026047      512000   83  Linux
    /dev/sda2         1026048   209715199   104344576   8e  Linux LVM

6. Use fdisk utility to delete/create partitions

   $ sudo fdisk /dev/sda

7. You are in the fdisk utility interactive mode, issue following commands: (mostly just follow the default recommendation)

   d - delete a partition

   2 - select a partition to delete (/dev/sda2 here)

   n - create a new partition

   p - make it a primary partition

   2 - make it on the same partition number as we deleted

   - set the starting block (by default)

   - set end ending block (by default)

   w - write the partition and leave the fdisk interactive mode

8. Reboot your CentOS machine

   $ sudo reboot

9. Resize the physical volume and verify the new size

   $ sudo pvresize /dev/sda2

   $ sudo pvscan

10. Take a look at your logical mapping volume to see what volume you want to enlarge, in my case, /dev/mapper/centos-root

11. Resize the file system by adding -r option, it will take care of resizing for you

    $lvextend -r -l +100%FREE /dev/mapper/centos-root

12. Resize the file system:

    $resize2fs /dev/mapper/fedora-root

    For CentOS 7: $xfs_growfs /dev/mapper/fedora-root

13. Last check:

    $df -h.

Reference:https://blog.jyore.com/2013/06/virtualbox-increase-size-of-rhelfedoracentosscientificos-guest-file-system/#comment-2879