public void VhdFooter_Checksum()
{
HardDiskFooter target = new HardDiskFooter();
var firstChecksum = BitConverter.ToString(target.Checksum);
target.BeginUpdate();
target.UniqueId = Guid.NewGuid();
Assert.AreEqual(firstChecksum, BitConverter.ToString(target.Checksum));
Assert.AreEqual(false, target.IsChecksumCorrect);
target.EndUpdate();
Assert.AreNotEqual(firstChecksum, BitConverter.ToString(target.Checksum));
Assert.AreEqual(true, target.IsChecksumCorrect);
}
private bool CreateVhd()
{
using (var stream = new FileStream(this.FileName, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None, 1, FileOptions.WriteThrough)) {
ReFS.RemoveIntegrityStream(stream.SafeFileHandle);
var footer = new HardDiskFooter();
footer.BeginUpdate();
footer.CreatorApplication = VhdCreatorApplication.JosipMedvedVhdAttach;
footer.CreatorVersion = Medo.Reflection.EntryAssembly.Version;
footer.SetSize((UInt64)this.SizeInBytes);
footer.OriginalSize = footer.CurrentSize;
footer.DiskType = VhdDiskType.FixedHardDisk;
footer.EndUpdate();
var lastReport = DateTime.UtcNow;
byte[] buffer = new byte[Settings.WriteBufferSize];
ulong remaining = footer.CurrentSize;
while (remaining > 0) {
if (bgw.CancellationPending) {
stream.Dispose();
File.Delete(this.FileName);
return false;
}
ulong count = (ulong)buffer.Length;
if ((ulong)count > remaining) { count = remaining; }
stream.Write(buffer, 0, (int)count);
remaining -= count;
if (lastReport.AddSeconds(1) < DateTime.UtcNow) {
bgw.ReportProgress(100 - (int)(remaining * 100 / footer.CurrentSize));
lastReport = DateTime.UtcNow;
}
}
buffer = footer.Bytes;
stream.Write(buffer, 0, buffer.Length);
}
return true;
}