Name

VMRevertToSnapshot

Description

$err = VMRevertToSnapshot($vmHandle,
                          $snapshotHandle,
                          $options,
                          $propertyListHandle);

Restores the virtual machine to the state when the specified snapshot was created.

Parameters

vmHandle: Identifies a virtual machine. Call VMOpen() to create a virtual machine handle.
snapshotHandle: A handle to a snapshot. Call VMGetRootSnapshot() to get a snapshot handle.
options: Any applicable VixVMPowerOpOptions. If the virtual machine was powered on when the snapshot was created, then this will determine how the virtual machine is powered back on. To prevent the virtual machine from being powered on regardless of the power state when the snapshot was created, use the VIX_VMPOWEROP_SUPPRESS_SNAPSHOT_POWERON flag. VIX_VMPOWEROP_SUPPRESS_SNAPSHOT_POWERON is mutually exclusive to all other VixVMPowerOpOptions.
propertyListHandle: Must be VIX_INVALID_HANDLE.

Return Value

$err. The error code returned by the operation. For returned values, see Topics > Error Codes.

Remarks

Restores the virtual machine to the state when the specified snapshot was created. This function can power on, power off, or suspend a virtual machine. The resulting power state reflects the power state when the snapshot was created.
When you revert a powered on virtual machine and want it to display in the Workstation user interface, options must have the VIX_VMPOWEROP_LAUNCH_GUI flag, unless the VIX_VMPOWEROP_SUPPRESS_SNAPSHOT_POWERON is used.
The VIX_PROPERTY_VM_TOOLS_STATE property of the virtual machine handle is undefined after the snapshot is reverted.
Starting in VMware Workstation 6.5, snapshot operations are allowed on virtual machines that are part of a team. Previously, this operation failed with error code VIX_PROPERTY_VM_IN_VMTEAM. Team members snapshot independently so they can have different and inconsistent snapshot states. VMWaitForToolsInGuest() must be called to refresh this property.

Side Effects

None.

Requirements

use VMware::Vix::Simple;
use VMware::Vix::API::Constants;

since VMware Server 1.0

Example

This example reverts to the root snapshot belonging to a virtual machine.

my $err = VIX_OK;
my $hostHandle = VIX_INVALID_HANDLE;
my $vmHandle = VIX_INVALID_HANDLE;
my $snapshotHandle = VIX_INVALID_HANDLE;
my $numRootSnapshots = 0;

($err, $hostHandle) = HostConnect(VIX_API_VERSION,
                                  VIX_SERVICEPROVIDER_VMWARE_WORKSTATION,
                                  undef, # hostName
                                  0, # hostPort
                                  undef, # userName
                                  undef, # password
                                  0, # options
                                  VIX_INVALID_HANDLE); # propertyListHandle

die "HostConnect() failed, $err ", GetErrorText($err), "\n" if $err != VIX_OK;

($err, $vmHandle) = VMOpen($hostHandle,
                           "c:\\Virtual Machines\\vm1\\win2000.vmx");
die "VMOpen() failed, $err ", GetErrorText($err), "\n" if $err != VIX_OK;

($err, $snapshotHandle) = VMGetRootSnapshot($vmHandle,
                                            0); # index
die "VMGetRootSnapshot() failed, $err ", GetErrorText($err), "\n" if $err != VIX_OK;

$err = VMRevertToSnapshot($vmHandle, 
                          $snapshotHandle,
                          VIX_VMPOWEROP_NORMAL,		# options
                          VIX_INVALID_HANDLE);		# property handle
die "VMRevertToSnapshot() failed, $err ", GetErrorText($err), "\n" if $err != VIX_OK;

ReleaseHandle($snapshotHandle);
ReleaseHandle($vmHandle);
HostDisconnect($hostHandle);