iankelling.org Git - automated-distro-installer/blob - fai/config/files/etc/init.d/expand-root/GCE

   1 #!/bin/bash
   2 ### BEGIN INIT INFO
   3 # Provides:       expand-root
   4 # Required-Start:
   5 # Required-Stop:
   6 # Should-Start:
   7 # Should-Stop:
   8 # Default-Start:  2 3 4 5
   9 # Default-Stop:
  10 # Description:    Expand the filesystem of the mounted root volume/partition to its maximum possible size
  11 ### END INIT INFO
  12
  13 prog=$(basename $0)
  14 logger="logger -t $prog"
  15
  16 growpart="growpart"
  17
  18 hash $growpart 2> /dev/null || {
  19         $logger "$growpart was not found on PATH. Unable to expand size."
  20         exit 1
  21 }
  22
  23 root_device_path="/dev/sda"
  24 root_index="1"
  25
  26 # Growpart can fail if the partition is already resized.
  27 $growpart $root_device_path $root_index || {
  28         $logger "growpart failed. Unable to expand size."
  29 }
  30
  31 device_path="${root_device_path}${root_index}"
  32 filesystem=$(blkid -s TYPE -o value ${device_path})
  33
  34 case $filesystem in
  35         xfs)  xfs_growfs / ;;
  36         ext2) resize2fs $device_path ;;
  37         ext3) resize2fs $device_path ;;
  38         ext4) resize2fs $device_path ;;
  39         *)    $logger "The filesystem $filesystem was not recognized. Unable to expand size." ;;
  40 esac