private void CreateDynamicVirtualHardDisk()
{
long maximumVhdSizeInMb = migrationData.TemporaryVhdFileMaxSize >> 20;// / (1024 * 1024);
string vhdTypeString = migrationData.VhdFileType == VhdType.VhdDynamic || migrationData.VhdFileType == VhdType.VhdxDynamic
? "expandable" : "fixed";
string vhdFullName = $"{migrationData.VhdFileTemporaryFolder}\\{migrationData.VhdFileName}";
logger.LogInformation($"Vhd temporary file path: {vhdFullName}");
List <string> diskpartScriptContent = new List <string>()
{
$"create vdisk file={vhdFullName} maximum={maximumVhdSizeInMb} type={vhdTypeString}",
$"select vdisk file={vhdFullName}",
"attach vdisk",
"convert mbr",
"detach vdisk",
"exit"
};
string diskpartScriptLocation = $"{migrationData.VhdFileTemporaryFolder}\\diskpartScriptContent.txt";
using (var sw = fileSystem.File.CreateText(diskpartScriptLocation))
{
foreach (string line in diskpartScriptContent)
{
sw.WriteLine(line);
}
}
fileSystemHelper.ExecuteDiskpart(diskpartScriptLocation, logger);
//cleanup
fileSystem.File.Delete(diskpartScriptLocation);
}
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();
}