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Expanding VM Filesystem Size

If the VM hits the size limit, but there is more space allocated, or you allocated the space. These steps will help with expanding the size of the volume.

 

Checking the Size

  1. Check Disk Usage to see which disk is affected
df -h
  1. Check volume group for free space
sudo vgdisplay

If there is no space, you will need to allocate more trough Hypervisor

 

Expanding filesystem roof

  1. Extend logical volume
sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

This will add remaining space to the root system

  1. Resize filesystem
sudo resize2fs /dev/ubuntu-vg/ubuntu-lv
  1. Verify disk size and usage
df -h /

Fix GPT/ Partition Table

If you run into problem where even after expanding filesystem roof it still stays at original number we might need to fix gpt/ partition table. Usually after running command below we would get following message.

    Check Disk size vs Partition Size 
    sudo fdisk -l /dev/sda


    GPT PMBR size mismatch (67108863 != 134217727) will be corrected by write.
    The backup GPT table is not on the end of the device

      Fix GPT/ Partition Table 
      sudo gdisk /dev/sda
# Press 'v' to verify, then 'w' to write fixes
        Resize the partition 
        sudo parted /dev/sda
(parted) resizepart 3 100%
(parted) quit
          Reload partition table 
          sudo partprobe /dev/sda
            Resize physical volume 
            sudo pvresize /dev/sda3
              Check VG Free Space 
              sudo vgdisplay
                Expand Logical Volume 
                sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
                  Resize Filesystem 
                  sudo resize2fs /dev/ubuntu-vg/ubuntu-lv

                  At the end verify to make sure its actually resized

                  df -h /

                   

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