Starting with VirtualBox 3.2, the VRDP server can redirect video streams from the guest to the RDP client. Video frames are compressed using the JPEG algorithm allowing a higher com- pression ratio than standard RDP bitmap compression methods. It is possible to increase the compression ratio by lowering the video quality.
Video streams in a guest are detected by the VRDP server automatically as frequently updated rectangular areas. Therefore, this method works with any guest operating system without having to install additional software in the guest.
On the client side, however, currently only the Windows 7 Remote Desktop Connection client supports this feature. If a client does not support video redirection, the VRDP server uses regular bitmap updates.
The following command enables video redirection:
VBoxManage modifyvm "VM name" --vrdpvideochannel on
The quality of the video is defined as a value from 10 to 100 percent, as is common with JPEG compression. The quality can be changed using the following command:
VBoxManage modifyvm "VM name" --vrdpvideochannelquality 75
7.1.10 VRDP customization
Starting with VirtualBox 3.2.10, it is possible to disable display output, mouse and keyboard input, audio, remote USB or clipboard in the VRDP server.
VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableDisplay" 1 VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableInput" 1 VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableUSB" 1 VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableAudio" 1 VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableClipboard" 1
To reenable a feature use a similar command without the trailing 1. For example:
VBoxManage setextradata "VM name" "VRDP/Feature/Client/DisableDisplay"
7.2 Teleporting
Starting with version 3.1, VirtualBox supports “teleporting” – that is, moving a virtual machine over a network from one VirtualBox host to another, while the virtual machine is running. This works regardless of the host operating system that is running on the hosts: you can teleport virtual machines between Solaris and Mac hosts, for example.
Teleporting requires that a machine be currently running on one host, which is then called the“source”. The host to which the virtual machine will be teleported will then be called the “target”; the machine on the target is then configured to wait for the source to contact the target.
The machine’s running state will then be transferred from the source to the target with minimal downtime.
Teleporting happens over any TCP/IP network; the source and the target only need to agree on a TCP/IP port which is specified in the teleporting settings.
At this time, there are a few prerequisites for this to work, however:
1. On the target host, you must configure a virtual machine in VirtualBox with exactly the same hardware settings as the machine on the source that you want to teleport. This does not apply to settings which are merely descriptive, such as the VM name, but obviously for teleporting to work, the target machine must have the same amount of memory and other hardware settings. Otherwise teleporting will fail with an error message.
2. The two virtual machines on the source and the target must share the same storage (hard disks as well as floppy and CD/DVD images). This means that they either use the same iSCSI targets or that the storage resides somewhere on the network and both hosts have access to it via NFS or SMB/CIFS.
This also means that neither the source nor the target machine can have any snapshots. Then perform the following steps:
1. On the target host, configure the virtual machine to wait for a teleport request to arrive when it is started, instead of actually attempting to start the machine. This is done with the following VBoxManage command:
VBoxManage modifyvm <targetvmname> --teleporter on --teleporterport <port>
where<targetvmname>is the name of the virtual machine on the target host and<port> is a TCP/IP port number to be used on both the source and the target hosts. For example, use 6000. For details, see chapter8.7.5,Teleporting settings, page109.
2. Start the VM on the target host. You will see that instead of actually running, it will show a progress dialog. indicating that it is waiting for a teleport request to arrive.
3. Start the machine on the source host as usual. When it is running and you want it to be teleported, issue the following command on the source host:
where<sourcevmname>is the name of the virtual machine on the source host (the machine that is currently running),<targethost>is the host or IP name of the target host on which the machine is waiting for the teleport request, and<port>must be the same number as specified in the command on the target host. For details, see chapter 8.11, VBoxManage controlvm, page112.
For testing, you can also teleport machines on the same host; in that case, use “localhost” as the hostname on both the source and the target host.
Note: In rare cases, if the CPUs of the source and the target are very different, tele-
porting can fail with an error message, or the target may hang. This may happen especially if the VM is running application software that is highly optimized to run on a particular CPU without correctly checking that certain CPU features are actually present. VirtualBox filters what CPU capabilities are presented to the guest operating system. Advanced users can attempt to restrict these virtual CPU capabilities with the VBoxManage --modifyvm --cpuidcommand; see chapter8.7.5, Teleporting settings, page109.
8 VBoxManage
8.1 Introduction
As briefly mentioned in chapter 1.12, Alternative front-ends, page 25, VBoxManage is the command-line interface to VirtualBox. With it, you can completely control VirtualBox from the command line of your host operating system. VBoxManage supports all the features that the graphical user interface gives you access to, but it supports a lot more than that. It exposes really all the features of the virtualization engine, even those that cannot (yet) be accessed from the GUI.
You will need to use the command line if you want to
• use a different user interface than the main GUI (for example, VBoxSDL or the VBoxHead- less server);
• control some of the more advanced and experimental configuration settings for a VM. There are two main things to keep in mind when usingVBoxManage: First,VBoxManagemust always be used with a specific “subcommand”, such as “list” or “createvm” or “startvm”. All the subcommands thatVBoxManagesupports are described in detail in chapter8,VBoxManage, page
95.
Second, most of these subcommands require that you specify a particular virtual machine after the subcommand. There are two ways you can do this:
• You can specify the VM name, as it is shown in the VirtualBox GUI. Note that if that name contains spaces, then you must enclose the entire name in double quotes (as it is always required with command line arguments that contain spaces).
For example:
VBoxManage startvm "Windows XP"
• You can specify the UUID, which is the internal unique identifier that VirtualBox uses to refer to the virtual machine. Assuming that the aforementioned VM called “Windows XP” has the UUID shown below, the following command has the same effect as the previous:
VBoxManage startvm 670e746d-abea-4ba6-ad02-2a3b043810a5
You can typeVBoxManage list vmsto have all currently registered VMs listed with all their settings, including their respective names and UUIDs.
Some typical examples of how to control VirtualBox from the command line are listed below: • To create a new virtual machine from the command line and immediately register it with
VirtualBox, useVBoxManage createvmwith the--registeroption,1like this: $ VBoxManage createvm --name "SUSE 10.2" --register
VirtualBox Command Line Management Interface Version 3.2.10 (C) 2005-2010 Oracle Corporation
All rights reserved.
Virtual machine ’SUSE 10.2’ is created. UUID: c89fc351-8ec6-4f02-a048-57f4d25288e5
Settings file: ’/home/username/.VirtualBox/Machines/SUSE 10.2/SUSE 10.2.xml’
As can be seen from the above output, a new virtual machine has been created with a new UUID and a new XML settings file.
• To show the configuration of a particular VM, useVBoxManage showvminfo; see chapter
8.4,VBoxManage showvminfo, page102for details and an example.
• To change settings while a VM is powered off, useVBoxManage modifyvm, e.g. as follows:
VBoxManage modifyvm "Windows XP" --memory "512MB"
For details, see chapter8.7,VBoxManage modifyvm, page104. • To control VM operation, use one of the following:
– To start a VM that is currently powered off, use VBoxManage startvm; see chapter
8.10,VBoxManage startvm, page111for details.
– To pause or save a VM that is currently running or change some of its settings, use
VBoxManage controlvm; see chapter8.11,VBoxManage controlvm, page112for de- tails.
8.2 Commands overview
When running VBoxManage without parameters or when supplying an invalid command line, the below syntax diagram will be shown. Note that the output will be slightly different depending on the host platform; when in doubt, check the output ofVBoxManagefor the commands available on your particular host.
Usage:
VBoxManage [-v|--version] print version number and exit VBoxManage [-q|--nologo] ... suppress the logo
VBoxManage list [--long|-l] vms|runningvms|ostypes|hostdvds|hostfloppies| bridgedifs|hostonlyifs|dhcpservers|hostinfo| hostcpuids|hddbackends|hdds|dvds|floppies| usbhost|usbfilters|systemproperties VBoxManage showvminfo <uuid>|<name> [--details] [--statistics]
[--machinereadable] VBoxManage showvminfo <uuid>|<name> --log <idx> VBoxManage registervm <filename>
VBoxManage unregistervm <uuid>|<name> [--delete] VBoxManage createvm --name <name>
[--ostype <ostype>] [--register]
[--basefolder <path> | --settingsfile <path>] [--uuid <uuid>]
VBoxManage modifyvm <uuid|name> [--name <name>] [--ostype <ostype>] [--memory <memorysize in MB>] [--pagefusion on|off] [--vram <vramsize in MB>] [--acpi on|off] [--ioapic on|off] [--pae on|off] [--hpet on|off] [--hwvirtex on|off]
[--hwvirtexexcl on|off] [--nestedpaging on|off] [--largepages on|off] [--vtxvpid on|off] [--synthcpu on|off]
[--cpuidset <leaf> <eax> <ebx> <ecx> <edx>] [--cpuidremove <leaf>] [--cpuidremoveall] [--hardwareuuid <uuid>] [--cpus <number>] [--cpuhotplug on|off] [--plugcpu <id>] [--unplugcpu <id>] [--rtcuseutc on|off] [--monitorcount <number>] [--accelerate3d on|off] [--accelerate2dvideo on|off] [--firmware bios|efi|efi32|efi64] [--bioslogofadein on|off] [--bioslogofadeout on|off] [--bioslogodisplaytime <msec>] [--bioslogoimagepath <imagepath>] [--biosbootmenu disabled|menuonly|messageandmenu] [--biossystemtimeoffset <msec>] [--biospxedebug on|off] [--boot<1-4> none|floppy|dvd|disk|net>] [--nic<1-N> none|null|nat|bridged|intnet|hostonly| vde] [--nictype<1-N> Am79C970A|Am79C973| 82540EM|82543GC|82545EM| virtio] [--cableconnected<1-N> on|off] [--nictrace<1-N> on|off] [--nictracefile<1-N> <filename>] [--nicspeed<1-N> <kbps>] [--nicbootprio<1-N> <priority>] [--bridgeadapter<1-N> none|<devicename>] [--hostonlyadapter<1-N> none|<devicename>] [--intnet<1-N> <network name>]
[--natnet<1-N> <network>|default] [--vdenet<1-N> <network>|default] [--natsettings<1-N> [<mtu>],[<socksnd>], [<sockrcv>],[<tcpsnd>], [<tcprcv>]] [--natpf<1-N> [<rulename>],tcp|udp,[<hostip>], <hostport>,[<guestip>],<guestport>] [--natpf<1-N> delete <rulename>]
[--nattftpprefix<1-N> <prefix>] [--nattftpfile<1-N> <file>] [--nattftpserver<1-N> <ip>] [--natdnspassdomain<1-N> on|off] [--natdnsproxy<1-N> on|off] [--natdnshostresolver<1-N> on|off] [--nataliasmode<1-N> default|[log],[proxyonly], [sameports]] [--macaddress<1-N> auto|<mac>] [--mouse ps2|usb|usbtablet [--keyboard ps2|usb
[--uart<1-N> off|<I/O base> <IRQ>] [--uartmode<1-N> disconnected| server <pipe>| client <pipe>| file <file>| <devicename>] [--guestmemoryballoon <balloonsize in MB>] [--gueststatisticsinterval <seconds>] [--audio none|null|dsound|solaudio|oss|alsa|pulse|
oss|pulse|coreaudio] [--audiocontroller ac97|sb16] [--clipboard disabled|hosttoguest|guesttohost| bidirectional] [--vrdp on|off] [--vrdpport default|<ports>] [--vrdpaddress <host>] [--vrdpauthtype null|external|guest] [--vrdpmulticon on|off] [--vrdpreusecon on|off] [--vrdpvideochannel on|off] [--vrdpvideochannelquality <percent>] [--usb on|off] [--usbehci on|off] [--snapshotfolder default|<path>] [--teleporter on|off] [--teleporterport <port>] [--teleporteraddress <address|empty> [--teleporterpassword <password>] VBoxManage import <ovf> [--dry-run|-n] [more options]
(run with -n to have options displayed for a particular OVF)
VBoxManage export <machines> --output|-o <ovf> [--legacy09]
[--vsys <number of virtual system>] [--product <product name>] [--producturl <product url>] [--vendor <vendor name>] [--vendorurl <vendor url>] [--version <version info>] [--eula <license text>] [--eulafile <filename>] VBoxManage startvm <uuid>|<name>
[--type gui|sdl|vrdp|headless] VBoxManage controlvm <uuid>|<name>
pause|resume|reset|poweroff|savestate| acpipowerbutton|acpisleepbutton| keyboardputscancode <hex> [<hex> ...]| injectnmi| setlinkstate<1-N> on|off | nic<1-N> null|nat|bridged|intnet|hostonly [<devicename>] | nictrace<1-N> on|off nictracefile<1-N> <filename> guestmemoryballoon <balloonsize in MB>] gueststatisticsinterval <seconds>] usbattach <uuid>|<address> | usbdetach <uuid>|<address> | vrdp on|off | vrdpport default|<ports> | vrdpvideochannelquality <percent>
setvideomodehint <xres> <yres> <bpp> [display] | setcredentials <username> <password> <domain>
[--allowlocallogon <yes|no>] | teleport --host <name> --port <port>
[--maxdowntime <msec>] [--password password] plugcpu <id>
unplugcpu <id> VBoxManage discardstate <uuid>|<name>
VBoxManage snapshot <uuid>|<name>
take <name> [--description <desc>] [--pause] | delete <uuid>|<name> | restore <uuid>|<name> | restorecurrent | edit <uuid>|<name>|--current [--name <name>] [--description <desc>] | showvminfo <uuid>|<name> VBoxManage openmedium disk|dvd|floppy <filename>
[--type normal|immutable|writethrough| shareable] (disk only)
[--uuid <uuid>]
[--parentuuid <uuid>] (disk only) VBoxManage closemedium disk|dvd|floppy <uuid>|<filename>
[--delete] VBoxManage storageattach <uuid|vmname>
--storagectl <name> --port <number> --device <number> [--type dvddrive|hdd|fdd] [--medium none|emptydrive| <uuid>|<filename>|host:<drive>] [--passthrough on|off] [--forceunmount] VBoxManage storagectl <uuid|vmname>
--name <name> [--add ide|sata|scsi|floppy|sas] [--controller LSILogic|LSILogicSAS|BusLogic| IntelAHCI|PIIX3|PIIX4|ICH6|I82078] [--sataideemulation<1-4> <1-30>] [--sataportcount <1-30>] [--hostiocache on|off] [--remove]
VBoxManage showhdinfo <uuid>|<filename> VBoxManage createhd --filename <filename>
--size <megabytes>
[--format VDI|VMDK|VHD] (default: VDI) [--variant Standard,Fixed,Split2G,Stream,ESX] [--type normal|writethrough|
shareable] (default: normal) [--comment <comment>]
[--remember] VBoxManage modifyhd <uuid>|<filename>
[--type normal|writethrough|immutable|shareable] [--autoreset on|off]
[--compact]
VBoxManage clonehd <uuid>|<filename> <outputfile> [--format VDI|VMDK|VHD|RAW|<other>]
[--variant Standard,Fixed,Split2G,Stream,ESX] [--type normal|writethrough|immutable|shareable] [--remember] [--existing]
VBoxManage convertfromraw <filename> <outputfile> [--format VDI|VMDK|VHD]
[--variant Standard,Fixed,Split2G,Stream,ESX] VBoxManage convertfromraw stdin <outputfile> <bytes>
[--format VDI|VMDK|VHD]
VBoxManage addiscsidisk --server <name>|<ip> --target <target> [--port <port>] [--lun <lun>] [--encodedlun <lun>] [--username <username>] [--password <password>] [--type normal|writethrough|immutable|shareable] [--intnet]
VBoxManage getextradata global|<uuid>|<name> <key>|enumerate VBoxManage setextradata global|<uuid>|<name>
<key>
[<value>] (no value deletes key) VBoxManage setproperty hdfolder default|<folder> |
machinefolder default|<folder> | vrdpauthlibrary default|<library> | websrvauthlibrary default|null|<library> | loghistorycount <value>
VBoxManage usbfilter add <index,0-N>
--target <uuid>|<name>|global --name <string>
--action ignore|hold (global filters only) [--active yes|no] (yes)
[--vendorid <XXXX>] (null) [--productid <XXXX>] (null) [--revision <IIFF>] (null) [--manufacturer <string>] (null) [--product <string>] (null)
[--remote yes|no] (null, VM filters only) [--serialnumber <string>] (null)
[--maskedinterfaces <XXXXXXXX>] VBoxManage usbfilter modify <index,0-N>
--target <uuid>|<name>|global [--name <string>]
[--action ignore|hold] (global filters only) [--active yes|no] [--vendorid <XXXX>|""] [--productid <XXXX>|""] [--revision <IIFF>|""] [--manufacturer <string>|""] [--product <string>|""]
[--remote yes|no] (null, VM filters only) [--serialnumber <string>|""]
[--maskedinterfaces <XXXXXXXX>] VBoxManage usbfilter remove <index,0-N>
--target <uuid>|<name>|global VBoxManage sharedfolder add <vmname>|<uuid>
--name <name> --hostpath <hostpath> [--transient] [--readonly]
VBoxManage sharedfolder remove <vmname>|<uuid> --name <name> [--transient] VBoxManage vmstatistics <vmname>|<uuid> [--reset]
[--pattern <pattern>] [--descriptions] VBoxManage guestproperty get <vmname>|<uuid>
VBoxManage guestproperty set <vmname>|<uuid>
<property> [<value> [--flags <flags>]] VBoxManage guestproperty enumerate <vmname>|<uuid>
[--patterns <patterns>]
VBoxManage guestproperty wait <vmname>|<uuid> <patterns> [--timeout <msec>] [--fail-on-timeout] VBoxManage guestcontrol execute <vmname>|<uuid>
<path to program>
--username <name> --password <password> [--arguments "<arguments>"]
[--environment "<NAME>=<VALUE> [<NAME>=<VALUE>]"] [--flags <flags>] [--timeout <msec>]
[--verbose] [--wait-for exit,stdout,stderr||] VBoxManage metrics list [*|host|<vmname> [<metric_list>]]
(comma-separated) VBoxManage metrics setup
[--period <seconds>] (default: 1) [--samples <count>] (default: 1) [--list]
[*|host|<vmname> [<metric_list>]] VBoxManage metrics query [*|host|<vmname> [<metric_list>]] VBoxManage metrics enable
[--list]
[*|host|<vmname> [<metric_list>]] VBoxManage metrics disable
[--list]
[*|host|<vmname> [<metric_list>]] VBoxManage metrics collect
[--period <seconds>] (default: 1) [--samples <count>] (default: 1) [--list]
[--detach]
[*|host|<vmname> [<metric_list>]] VBoxManage hostonlyif ipconfig <name>
[--dhcp |
--ip<ipv4> [--netmask<ipv4> (def: 255.255.255.0)] | --ipv6<ipv6> [--netmasklengthv6<length> (def: 64)]] VBoxManage dhcpserver add|modify --netname <network_name> |
--ifname <hostonly_if_name> [--ip <ip_address> --netmask <network_mask> --lowerip <lower_ip> --upperip <upper_ip>] [--enable | --disable] VBoxManage dhcpserver remove --netname <network_name> |
--ifname <hostonly_if_name>
Each time VBoxManage is invoked, only one command can be executed. However, a command might support several subcommands which then can be invoked in one single call. The following sections provide detailed reference information on the different commands.
8.3 VBoxManage list
The list command gives relevant information about your system and information about VirtualBox’s current settings.
The following subcommands are available withVBoxManage list:
• vmslists all virtual machines currently registered with VirtualBox. By default this displays a compact list with each VM’s name and UUID; if you also specify--longor-l, this will be a detailed list as with theshowvminfocommand (see below).
• runningvmslists all currently running virtual machines by their unique identifiers (UUIDs) in the same format as withvms.
• hdds,dvdsandfloppiesall give you information about virtual disk images currently reg- istered in VirtualBox, including all their settings, the unique identifiers (UUIDs) associated with them by VirtualBox and all files associated with them.
• ostypeslists all guest operating systems presently known to VirtualBox, along with the identifiers used to refer to them with themodifyvmcommand.
• hostdvds,hostfloppiesandhostifs, respectively, list DVD, floppy and host networking interfaces on the host, along with the name used to access them from within VirtualBox. • hostusbsupplies information about USB devices attached to the host, notably information
useful for constructing USB filters and whether they are currently in use by the host. • usbfilterslists all global USB filters registered with VirtualBox – that is, filters for devices
which are accessible to all virtual machines – and displays the filter parameters.
• systempropertiesdisplays some global VirtualBox settings, such as minimum and maxi- mum guest RAM and virtual hard disk size, folder settings and the current authentication library in use.
• hddbackendslists all known hdd backends of VirtualBox. Beside the name of the backend itself, descriptions about the capabilities, configuration and other useful informations are displayed.
8.4 VBoxManage showvminfo
Theshowvminfo command shows information about a particular virtual machine. This is the same information asVBoxManage list vms --longwould show for all virtual machines.
You will get information similar to the following:
$ VBoxManage showvminfo "Windows XP"
VirtualBox Command Line Management Interface Version 3.2.10 (C) 2005-2010 Oracle Corporation
All rights reserved. Name: Windows XP Guest OS: Other/Unknown
UUID: 1bf3464d-57c6-4d49-92a9-a5cc3816b7e7
Config file: /home/username/.VirtualBox/Machines/Windows XP/Windows XP.xml Memory size: 512MB
VRAM size: 12MB Number of CPUs: 2 Synthetic Cpu: off
Boot menu mode: message and menu Boot Device (1): DVD
Boot Device (2): HardDisk Boot Device (3): Not Assigned
Boot Device (4): Not Assigned ACPI: on IOAPIC: on PAE: on Time offset: 0 ms Hardw. virt.ext: on
Hardw. virt.ext exclusive: on Nested Paging: on
VT-x VPID: off
State: powered off (since 2009-10-20T14:52:19.000000000) Monitor count: 1
3D Acceleration: off 2D Video Acceleration: off Teleporter Enabled: off Teleporter Port: 0 Teleporter Address: Teleporter Password:
Storage Controller (0): IDE Controller Storage Controller Type (0): PIIX4
Storage Controller (1): Floppy Controller 1 Storage Controller Type (1): I82078
IDE Controller (0, 0): /home/user/windows.vdi (UUID: 46f6e53a-4557-460a-9b95-68b0f17d744b) IDE Controller (0, 1): /home/user/openbsd-cd46.iso (UUID: 4335e162-59d3-4512-91d5-b63e94eebe0b) Floppy Controller 1 (0, 0): /home/user/floppy.img (UUID: 62ac6ccb-df36-42f2-972e-22f836368137) NIC 1: disabled NIC 2: disabled NIC 3: disabled NIC 4: disabled NIC 5: disabled NIC 6: disabled NIC 7: disabled NIC 8: disabled UART 1: disabled UART 2: disabled
Audio: disabled (Driver: Unknown) Clipboard Mode: Bidirectional
VRDP: disabled USB: disabled USB Device Filters: <none>
Shared folders: <none>
Statistics update: disabled