Extended VM Disk In VirtualBox or VMware (虚拟机磁盘扩容)

First, Clean VM all snapshot, and poweroff your VM.

vmdk:

vmware-vdiskmanager -x 16GB myDisk.vmdk

vdi:

VBoxManage modifyhd <absolute path to file> --resize <size in MB>

 

And now, go to guest OS to resize partition.

I have only one partition, and it's root partition. You can use LiveCD do this. However, You alse use fdisk and resize2fs, that support online mode.

fdisk /dev/sda

Delete old partition, and create new partition you want. Last, write to disk, reboot your VM. Then run:

resize2fs /dev/sda1

Now, you can check your partition size.

df -h

 

P.S.

I find Shell script on raspi-config. It's a script it is used for expand root filesystem on SD card.

#.......

do_expand_rootfs() {

  if ! [ -h /dev/root ]; then

    whiptail --msgbox "/dev/root does not exist or is not a symlink. Don't know how to expand" 20 60 2

    return 0

  fi



  ROOT_PART=$(readlink /dev/root)

  PART_NUM=${ROOT_PART#mmcblk0p}

  if [ "$PART_NUM" = "$ROOT_PART" ]; then

    whiptail --msgbox "/dev/root is not an SD card. Don't know how to expand" 20 60 2

    return 0

  fi



  # NOTE: the NOOBS partition layout confuses parted. For now, let's only 

  # agree to work with a sufficiently simple partition layout

  if [ "$PART_NUM" -ne 2 ]; then

    whiptail --msgbox "Your partition layout is not currently supported by this tool. You are probably using NOOBS, in which case your root filesystem is already expanded anyway." 20 60 2

    return 0

  fi



  LAST_PART_NUM=$(parted /dev/mmcblk0 -ms unit s p | tail -n 1 | cut -f 1 -d:)



  if [ "$LAST_PART_NUM" != "$PART_NUM" ]; then

    whiptail --msgbox "/dev/root is not the last partition. Don't know how to expand" 20 60 2

    return 0

  fi



  # Get the starting offset of the root partition

  PART_START=$(parted /dev/mmcblk0 -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d:)

  [ "$PART_START" ] || return 1

  # Return value will likely be error for fdisk as it fails to reload the

  # partition table because the root fs is mounted

  fdisk /dev/mmcblk0 <<EOF

p

d

$PART_NUM

n

p

$PART_NUM

$PART_START



p

w

EOF

  ASK_TO_REBOOT=1



  # now set up an init.d script

cat <<\EOF > /etc/init.d/resize2fs_once &&

#!/bin/sh

### BEGIN INIT INFO

# Provides:          resize2fs_once

# Required-Start:

# Required-Stop:

# Default-Start: 2 3 4 5 S

# Default-Stop:

# Short-Description: Resize the root filesystem to fill partition

# Description:

### END INIT INFO



. /lib/lsb/init-functions



case "$1" in

  start)

    log_daemon_msg "Starting resize2fs_once" &&

    resize2fs /dev/root &&

    rm /etc/init.d/resize2fs_once &&

    update-rc.d resize2fs_once remove &&

    log_end_msg $?

    ;;

  *)

    echo "Usage: $0 start" >&2

    exit 3

    ;;

esac

EOF

  chmod +x /etc/init.d/resize2fs_once &&

  update-rc.d resize2fs_once defaults &&

  if [ "$INTERACTIVE" = True ]; then

    whiptail --msgbox "Root partition has been resized.\nThe filesystem will be enlarged upon the next reboot" 20 60 2

  fi

}

#......

View Code

 

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