public override void PerformStep()
{
logger.LogInformation("Fixing cloned OS registry.");
string vhdFullName = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
using (VirtualDiskDecorator disk = this.fileSystemHelper.OpenVhdx(vhdFullName))
{
PartitionInfoDecorator clonedPartition = disk.Partitions[0];
using (Stream partitionStream = clonedPartition.Open())
{
using (DiscFileSystem ntfs = this.fileSystemHelper.OpenNtfsFileSystem(partitionStream))
{
if (ntfs is NtfsFileSystem)
{
(ntfs as NtfsFileSystem).NtfsOptions.HideSystemFiles = false;
(ntfs as NtfsFileSystem).NtfsOptions.HideHiddenFiles = false;
}
// removes not necessary files from the image
// Remove VSS snapshot files (can be very large)
foreach (string filePath in ntfs.GetFiles(@"\System Volume Information", "*{3808876B-C176-4e48-B7AE-04046E6CC752}"))
{
ntfs.DeleteFile(filePath);
}
// Remove the page file
if (ntfs.FileExists(@"\Pagefile.sys"))
{
ntfs.DeleteFile(@"\Pagefile.sys");
}
// Remove the hibernation file
if (ntfs.FileExists(@"\hiberfil.sys"))
{
ntfs.DeleteFile(@"\hiberfil.sys");
}
using (Stream systemRegistryStream = ntfs.OpenFile(@"windows\system32\config\system", FileMode.Open))
{
this.fileSystemHelper.ChangeSystemDriveMappingFromRegistry(systemRegistryStream);
}
}
}
if (migrationData.TemporaryVhdFileIsTheFinalOne)
{
char vhdLocationDriveLetter = migrationData.VhdFileTemporaryFolder[0];
var driveInfo = this.fileSystem.DriveInfo.FromDriveName(vhdLocationDriveLetter.ToString() + ":\\");
if (driveInfo.AvailableFreeSpace <= disk.Geometry.Capacity)
{
logger.LogWarning($"The image is located in a drive which has not enough free space for it to expand. If you will not free some space on drive '{driveInfo.Name}' then you will see BSOD when trying to boot from the created image.");
}
}
}
return;
}
private void ValidateVhdVolumeSize()
{
string vhdFile = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
using (VirtualDiskDecorator sourceVhd = this.fileSystemHelper.OpenVhdx(vhdFile))
{
using (Stream inpuStream = sourceVhd.Partitions[0].Open())
{
if (inpuStream.Length > migrationData.DestinationVhdMaxFileSize)
{
throw new Exception("Volume after shrink operation is too big to successfully migrate to system drive. Migration cannot continue.");
}
}
}
}
public override void PerformStep()
{
logger.LogInformation("Cloning operating system.");
using (IVssBackupComponents backupComponents = vss.CreateVssBackupComponents())
{
this.CreateVssSnapshotOfSystemVolume(backupComponents);
try
{
logger.LogInformation("Copying system partition data...");
using (PrivilegeEnabler privEnabler = new PrivilegeEnabler(Privilege.Backup, Privilege.Restore))
{
VssSnapshotProperties snapshotInfo = backupComponents.GetSnapshotProperties(this.vssSnapshotId);
using (Stream rawVolStream = this.fileSystemHelper.OpenRawDiskStream(snapshotInfo.SnapshotDeviceObject))
{
string vhdFullName = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
using (VirtualDiskDecorator disk = this.fileSystemHelper.OpenVhdx(vhdFullName))
{
var partitionTable = disk.Partitions;
if (partitionTable != null)
{
int partIndex = partitionTable.CreatePrimaryBySector(1, (rawVolStream.Length / disk.Geometry.BytesPerSector), BiosPartitionTypes.Ntfs, false);
PartitionInfoDecorator partition = disk.Partitions[partIndex];
using (var vhdPartitionStream = partition.Open())
{
this.fileSystemHelper.CloneNtfsFileSystem(rawVolStream, vhdPartitionStream, logger);
}
}
else
{
logger.LogError("VHD disk does not contain BIOS partition table. Other partitions tables are not supported.");
}
}
}
}
}
finally
{
this.RemoveVssSnapshotOfSystemVolume(backupComponents); //always remove the VSS snapshot, either after success or failure
}
logger.LogInformation("Cloning operating system completed.");
}
return;
}
public override void PerformStep()
{
if (this.migrationData.TemporaryVhdFileIsTheFinalOne)
{
return;
}
logger.LogInformation("Copying partition data...");
this.sourceVhdFile = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
this.destinationVhdFile = $"{migrationData.VhdFileDestinationFolder}\\{migrationData.VhdFileName}";
using (PrivilegeEnabler privEnabler = new PrivilegeEnabler(Privilege.Backup, Privilege.Restore))
{
using (VirtualDiskDecorator sourceVhd = this.fileSystemHelper.OpenVhdx(this.sourceVhdFile))
{
using (Stream inpuStream = sourceVhd.Partitions[0].Open())
{
using (VirtualDiskDecorator destinationVhd = this.fileSystemHelper.OpenVhdx(this.destinationVhdFile))
{
var partitionTable = destinationVhd.Partitions;
int partIndex = partitionTable.CreatePrimaryBySector(1, (inpuStream.Length / destinationVhd.Geometry.BytesPerSector), BiosPartitionTypes.Ntfs, false);
PartitionInfoDecorator partition = destinationVhd.Partitions[partIndex];
using (var outputStream = partition.Open())
{
this.fileSystemHelper.CloneNtfsFileSystem(inpuStream, outputStream, logger);
}
}
}
}
}
if (migrationData.DeleteTemporaryVhdFile)
{
this.fileSystem.File.Delete(this.sourceVhdFile);
}
logger.LogInformation("Cloning temporary vhd to destination vhd completed.");
}
