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Fixed: Added verified file transfer mode that doesn't revert to copy.

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This commit is contained in:
Taloth Saldono
2015-10-21 23:28:20 +02:00
parent 04de0049fe
commit cc72699b8a
2 changed files with 122 additions and 64 deletions
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src/NzbDrone.Common/Disk/DiskTransferService.cs
+75 -57
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@@ -21,6 +21,7 @@ namespace NzbDrone.Common.Disk
{
None,
VerifyOnly,
TryTransactional,
Transactional
}
@@ -40,7 +41,7 @@ namespace NzbDrone.Common.Disk
// TODO: Atm we haven't seen partial transfers on windows so we disable verified transfer.
// (If enabled in the future, be sure to check specifically for ReFS, which doesn't support hardlinks.)
VerificationMode = OsInfo.IsWindows ? DiskTransferVerificationMode.VerifyOnly : DiskTransferVerificationMode.Transactional;
VerificationMode = OsInfo.IsWindows ? DiskTransferVerificationMode.VerifyOnly : DiskTransferVerificationMode.TryTransactional;
}
public TransferMode TransferFolder(string sourcePath, string targetPath, TransferMode mode, bool verified = true)
@@ -48,11 +49,6 @@ namespace NzbDrone.Common.Disk
Ensure.That(sourcePath, () => sourcePath).IsValidPath();
Ensure.That(targetPath, () => targetPath).IsValidPath();
if (VerificationMode != DiskTransferVerificationMode.Transactional)
{
verified = false;
}
if (!_diskProvider.FolderExists(targetPath))
{
_diskProvider.CreateFolder(targetPath);
@@ -85,12 +81,14 @@ namespace NzbDrone.Common.Disk
Ensure.That(sourcePath, () => sourcePath).IsValidPath();
Ensure.That(targetPath, () => targetPath).IsValidPath();
if (VerificationMode != DiskTransferVerificationMode.Transactional)
if (VerificationMode != DiskTransferVerificationMode.Transactional && VerificationMode != DiskTransferVerificationMode.TryTransactional)
{
verified = false;
}
_logger.Debug("{0} [{1}] > [{2}]", mode, sourcePath, targetPath);
var originalSize = _diskProvider.GetFileSize(sourcePath);
if (sourcePath == targetPath)
{
@@ -127,6 +125,15 @@ namespace NzbDrone.Common.Disk
return TransferMode.None;
}
if (sourcePath.GetParentPath() == targetPath.GetParentPath())
{
if (mode.HasFlag(TransferMode.Move))
{
TryMoveFileVerified(sourcePath, targetPath, originalSize);
return TransferMode.Move;
}
}
if (sourcePath.IsParentPath(targetPath))
{
throw new IOException(string.Format("Destination cannot be a child of the source [{0}] => [{1}]", sourcePath, targetPath));
@@ -151,7 +158,7 @@ namespace NzbDrone.Common.Disk
{
if (mode.HasFlag(TransferMode.Copy))
{
if (TryCopyFile(sourcePath, targetPath))
if (TryCopyFileTransactional(sourcePath, targetPath, originalSize))
{
return TransferMode.Copy;
}
@@ -159,7 +166,7 @@ namespace NzbDrone.Common.Disk
if (mode.HasFlag(TransferMode.Move))
{
if (TryMoveFile(sourcePath, targetPath))
if (TryMoveFileTransactional(sourcePath, targetPath, originalSize))
{
return TransferMode.Move;
}
@@ -167,50 +174,18 @@ namespace NzbDrone.Common.Disk
throw new IOException(string.Format("Failed to completely transfer [{0}] to [{1}], aborting.", sourcePath, targetPath));
}
else if (VerificationMode == DiskTransferVerificationMode.VerifyOnly)
else if (VerificationMode != DiskTransferVerificationMode.None)
{
var originalSize = _diskProvider.GetFileSize(sourcePath);
if (mode.HasFlag(TransferMode.Copy))
{
try
{
_diskProvider.CopyFile(sourcePath, targetPath);
var targetSize = _diskProvider.GetFileSize(targetPath);
if (targetSize != originalSize)
{
throw new IOException(string.Format("File copy incomplete. [{0}] was {1} bytes long instead of {2} bytes.", targetPath, targetSize, originalSize));
}
return TransferMode.Copy;
}
catch
{
RollbackCopy(sourcePath, targetPath);
throw;
}
TryCopyFileVerified(sourcePath, targetPath, originalSize);
return TransferMode.Copy;
}
if (mode.HasFlag(TransferMode.Move))
{
try
{
_diskProvider.MoveFile(sourcePath, targetPath);
var targetSize = _diskProvider.GetFileSize(targetPath);
if (targetSize != originalSize)
{
throw new IOException(string.Format("File copy incomplete, data loss may have occured. [{0}] was {1} bytes long instead of the expected {2}.", targetPath, targetSize, originalSize));
}
return TransferMode.Move;
}
catch
{
RollbackPartialMove(sourcePath, targetPath);
throw;
}
TryMoveFileVerified(sourcePath, targetPath, originalSize);
return TransferMode.Move;
}
}
else
@@ -310,10 +285,8 @@ namespace NzbDrone.Common.Disk
Thread.Sleep(3000);
}
private bool TryCopyFile(string sourcePath, string targetPath)
private bool TryCopyFileTransactional(string sourcePath, string targetPath, long originalSize)
{
var originalSize = _diskProvider.GetFileSize(sourcePath);
var tempTargetPath = targetPath + ".partial~";
if (_diskProvider.FileExists(tempTargetPath))
@@ -367,10 +340,8 @@ namespace NzbDrone.Common.Disk
return false;
}
private bool TryMoveFile(string sourcePath, string targetPath)
private bool TryMoveFileTransactional(string sourcePath, string targetPath, long originalSize)
{
var originalSize = _diskProvider.GetFileSize(sourcePath);
var backupPath = sourcePath + ".backup~";
var tempTargetPath = targetPath + ".partial~";
@@ -423,16 +394,63 @@ namespace NzbDrone.Common.Disk
}
}
_logger.Trace("Hardlink move failed, reverting to copy.");
if (TryCopyFile(sourcePath, targetPath))
if (VerificationMode == DiskTransferVerificationMode.Transactional)
{
_logger.Trace("Copy succeeded, deleting source.");
_diskProvider.DeleteFile(sourcePath);
_logger.Trace("Hardlink move failed, reverting to copy.");
if (TryCopyFileTransactional(sourcePath, targetPath, originalSize))
{
_logger.Trace("Copy succeeded, deleting source.");
_diskProvider.DeleteFile(sourcePath);
return true;
}
}
else
{
_logger.Trace("Hardlink move failed, reverting to move.");
TryMoveFileVerified(sourcePath, targetPath, originalSize);
return true;
}
_logger.Trace("Copy failed.");
_logger.Trace("Move failed.");
return false;
}
private void TryCopyFileVerified(string sourcePath, string targetPath, long originalSize)
{
try
{
_diskProvider.CopyFile(sourcePath, targetPath);
var targetSize = _diskProvider.GetFileSize(targetPath);
if (targetSize != originalSize)
{
throw new IOException(string.Format("File copy incomplete. [{0}] was {1} bytes long instead of {2} bytes.", targetPath, targetSize, originalSize));
}
}
catch
{
RollbackCopy(sourcePath, targetPath);
throw;
}
}
private void TryMoveFileVerified(string sourcePath, string targetPath, long originalSize)
{
try
{
_diskProvider.MoveFile(sourcePath, targetPath);
var targetSize = _diskProvider.GetFileSize(targetPath);
if (targetSize != originalSize)
{
throw new IOException(string.Format("File move incomplete, data loss may have occurred. [{0}] was {1} bytes long instead of the expected {2}.", targetPath, targetSize, originalSize));
}
}
catch
{
RollbackPartialMove(sourcePath, targetPath);
throw;
}
}
}
}