/// <summary>
/// Create an SVHDX_META_OPERATION_START_APPLY_SNAPSHOT_REQUEST structure and marshal it to a byte array
/// </summary>
/// <param name="startRequest">Type SVHDX_META_OPERATION_START_REQUEST includes TransactionId and OperationType</param>
/// <param name="applySnapshot">Type of SVHDX_APPLY_SNAPSHOT_PARAMS structure</param>
/// <returns>The marshalled byte array</returns>
public byte[] CreateTunnelMetaOperationStartApplySnapshotRequest(
SVHDX_META_OPERATION_START_REQUEST startRequest,
SVHDX_APPLY_SNAPSHOT_PARAMS applySnapshot)
{
SVHDX_META_OPERATION_START_APPLY_SNAPSHOT_REQUEST applySnapshotRequest = new SVHDX_META_OPERATION_START_APPLY_SNAPSHOT_REQUEST();
applySnapshotRequest.startRequest = startRequest;
applySnapshotRequest.applySnapshot = applySnapshot;
return(TypeMarshal.ToBytes(applySnapshotRequest));
}
public void BVT_ApplySnapshot()
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "1. Client opens a shared virtual disk file and expects success.");
OpenSharedVHD(TestConfig.NameOfSharedVHDS, RSVD_PROTOCOL_VERSION.RSVD_PROTOCOL_VERSION_2);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "2. Client reads 512 bytes and saves it for later comparation.");
byte[] byteBeforeChanged = null;
uint status = client.Read(0, 512, out byteBeforeChanged);
BaseTestSite.Assert.AreEqual(
(uint)0,
status,
"Read Status should be {0}, actual is {1}", GetStatus(0), GetStatus(status));
Guid snapshotId = Guid.NewGuid();
BaseTestSite.Log.Add(LogEntryKind.TestStep, "3. Client creates a snapshot.");
CreateSnapshot(snapshotId);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "4. Client closes the file.");
client.CloseSharedVirtualDisk();
BaseTestSite.Log.Add(LogEntryKind.TestStep, "5. Client reopens the shared virtual disk file and expects success.");
RequestIdentifier = 0;
OpenSharedVHD(TestConfig.NameOfSharedVHDS, RSVD_PROTOCOL_VERSION.RSVD_PROTOCOL_VERSION_2);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "6. Client sends Write request to change the file and expects success.");
byte[] payload = Smb2Utility.CreateRandomByteArray(512);
status = client.Write(0, payload);
BaseTestSite.Assert.AreEqual(
(uint)0,
status,
"Write Status should be {0}, actual is {1}", GetStatus(0), GetStatus(status));
BaseTestSite.Log.Add(LogEntryKind.TestStep, "7. Client sends Apply Snapshot request to apply the previous snapshot.");
SVHDX_APPLY_SNAPSHOT_PARAMS applySnapshot = new SVHDX_APPLY_SNAPSHOT_PARAMS();
applySnapshot.SnapshotID = snapshotId;
applySnapshot.SnapshotType = Snapshot_Type.SvhdxSnapshotTypeVM;
SVHDX_META_OPERATION_START_REQUEST startRequest = new SVHDX_META_OPERATION_START_REQUEST();
startRequest.TransactionId = Guid.NewGuid();
startRequest.OperationType = Operation_Type.SvhdxMetaOperationTypeApplySnapshot;
payload = client.CreateTunnelMetaOperationStartApplySnapshotRequest(startRequest, applySnapshot);
SVHDX_TUNNEL_OPERATION_HEADER?header;
SVHDX_TUNNEL_OPERATION_HEADER?response;
status = client.TunnelOperation <SVHDX_TUNNEL_OPERATION_HEADER>(
true, //true for Async operation, false for non-async operation
RSVD_TUNNEL_OPERATION_CODE.RSVD_TUNNEL_META_OPERATION_START,
++RequestIdentifier,
payload,
out header,
out response);
BaseTestSite.Assert.AreEqual(
(uint)Smb2Status.STATUS_SUCCESS,
status,
"Ioctl should succeed, actual status: {0}",
GetStatus(status));
VerifyTunnelOperationHeader(header.Value, RSVD_TUNNEL_OPERATION_CODE.RSVD_TUNNEL_META_OPERATION_START, (uint)RsvdStatus.STATUS_SVHDX_SUCCESS, RequestIdentifier);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "8. Client rereads 512 bytes and compares it with the previously saved bytes.");
byte[] byteAfterApplied = null;
status = client.Read(0, 512, out byteAfterApplied);
BaseTestSite.Assert.AreEqual(
(uint)0,
status,
"Read Status should be {0}, actual is {1}", GetStatus(0), GetStatus(status));
bool equal = ArrayUtility.CompareArrays(byteBeforeChanged, byteAfterApplied);
BaseTestSite.Assert.AreEqual(
true,
equal,
"The bytes after snapshot applied should be the same with the original.");
BaseTestSite.Log.Add(LogEntryKind.TestStep, "9. Client deletes the snapshot.");
DeleteSnapshot(snapshotId);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "10. Client closes the file.");
client.CloseSharedVirtualDisk();
}
