public override bool CheckPrerequisities(ref string[] messages)
{
List <string> messageList = new List <string>();
logger.LogDebug("Checking critical requirements.");
bool osSupported = osHelper.IsOperatingSystemSupported();
if (!osSupported)
{
messageList.Add("Not supported operating system detected. Only the following Windows systems are supported: Windows 7 (Enterprise,Ultimate), Windows 8, Windows 8.1, Windows 10");
}
if (osHelper.IsBitlockerEnabledOnSystemDrive())
{
messageList.Add("Migration of operating system to VHD native boot is not supported when BitLocker is enabled. Migration cannot continue.");
}
if (string.IsNullOrWhiteSpace(migrationData.VhdFileTemporaryFolder))
{
messageList.Add("Cannot find any drive with free space to store temporary VHD(x) file.");
}
IDriveInfo systemDriveInfo = fileSystemHelper.GetSystemDriveInfo();
if (systemDriveInfo.AvailableFreeSpace < (systemDriveInfo.TotalSize / 2) && !migrationData.TemporaryVhdFileIsTheFinalOne)
{
messageList.Add("Not enough available free space on system drive to place the VHD(x) file. System drive must have at least 50% of free space to perform in place os migration to native VHD boot.");
}
messages = messageList.ToArray();
return(messageList.Count == 0);
}
private void ShrinkVolume()
{
var systemDriveInfo = fileSystemHelper.GetSystemDriveInfo();
long desiredShrinkSize = migrationData.DesiredTempVhdShrinkSize >> 20; // / (1024 * 1024);
string vhdFullName = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
logger.LogDebug($"Shrinking volume '{vhdFullName}' by {desiredShrinkSize} MB");
List <string> diskpartScriptContent = new List <string>()
{
$"select vdisk file={vhdFullName}",
"attach vdisk",
"select partition 1",
$"shrink desired={desiredShrinkSize}",
"detach vdisk",
"exit"
};
Policy retryPolicy = Policy
.Handle <Exception>()
.Retry(onRetry: (exception, retry) =>
{
this.logger.LogWarning(exception, $"Shrinking volume failed {retry} time.");
diskpartScriptContent = new List <string>()
{
$"select vdisk file={vhdFullName}",
"select partition 1",
$"shrink desired={desiredShrinkSize}",
"detach vdisk",
"exit"
};
});
string diskpartScriptLocation = $"{migrationData.VhdFileTemporaryFolder}\\diskpartScriptContent.txt";
retryPolicy.Execute(() =>
{
using (var sw = fileSystem.File.CreateText(diskpartScriptLocation))
{
foreach (string line in diskpartScriptContent)
{
sw.WriteLine(line);
}
}
fileSystemHelper.ExecuteDiskpart(diskpartScriptLocation, logger);
});
//cleanup
fileSystem.File.Delete(diskpartScriptLocation);
this.ValidateVhdVolumeSize();
}
private static MigrationFlowData BuildMigrationData(OperationModeEnum operationMode, IFileSystemHelper fileSystemHelper, bool addToBootManager)
{
MigrationFlowData migrationData = new MigrationFlowData();
IDriveInfo systemDriveInfo = fileSystemHelper.GetSystemDriveInfo();
migrationData.OperatingSystemDriveLetter = systemDriveInfo.Name.First();
migrationData.TemporaryVhdFileMaxSize = systemDriveInfo.TotalSize + (200 << 20) /*200MB*/;
migrationData.VhdFileName = "VHDNBOM_System_Image.vhdx";
migrationData.VhdFileType = Logic.Models.Enums.VhdType.VhdxDynamic;
migrationData.VhdFileTemporaryFolder = vhdTemporaryFolderPath ?? fileSystemHelper.FindBestLocationForVhdTemporaryFolder();
migrationData.AddVhdToBootManager = addToBootManager;
if (operationMode == OperationModeEnum.MigrateCurrentOsToVhd)
{
migrationData.DeleteTemporaryVhdFile = true;
migrationData.DestinationVhdMaxFileSize = (systemDriveInfo.AvailableFreeSpace - Constants.FiveGigs + Constants.OneGig) + (200 << 20);
migrationData.DesiredTempVhdShrinkSize = (systemDriveInfo.TotalSize - (systemDriveInfo.AvailableFreeSpace - Constants.FiveGigs));
migrationData.VhdFileDestinationFolder = $"{migrationData.OperatingSystemDriveLetter}:\\VHD_Boot";
}
return(migrationData);
}