private bool disposedValue = false; // To detect redundant calls
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
BackupComplete();
if (snapShotSet != Guid.Empty)
{
backup.DeleteSnapshotSet(snapShotSet, true);
snapShotSet = Guid.Empty;
}
if (backup != null)
{
backup.Dispose();
backup = null;
}
}
// TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
// TODO: set large fields to null.
disposedValue = true;
}
}
private void Cleanup()
{
if (_session._mountPoint != null)
{
_backup.BackupComplete();
VerifyWriterStatus();
_session._mountPoint = null;
}
if (_snapshotSetID != Guid.Empty)
{
// apparently fails on Windows 2008 - the non-persistent shadow copy
// should be deleted as soon as _backup is disposed of anyway,
// so just try to explicitly delete the snapshot set and ignore any issues
try { _backup.DeleteSnapshotSet(_snapshotSetID, forceDelete: true); }
catch { }
}
if (_backup != null)
{
_backup.Dispose();
}
lock (_disposeEventSyncObject)
{
_disposeEvent.Dispose();
_disposeEvent = null;
}
}
static void BackupFile(string srcPath, string destPath)
{
srcPath = Path.GetFullPath(srcPath);
IVssImplementation vssImpl = VssUtils.LoadImplementation();
using (IVssBackupComponents vss = vssImpl.CreateVssBackupComponents())
{
vss.InitializeForBackup(null);
vss.SetBackupState(true, true, VssBackupType.Full, false);
vss.SetContext(VssSnapshotContext.FileShareBackup);
using (IVssAsync async = vss.GatherWriterMetadata())
async.Wait();
Guid vssSet = vss.StartSnapshotSet();
var rootPath = Path.GetPathRoot(srcPath);
var snapshotId = vss.AddToSnapshotSet(rootPath, Guid.Empty);
using (IVssAsync async = vss.DoSnapshotSet())
async.Wait();
try
{
var snapshotPath = vss.GetSnapshotProperties(snapshotId).SnapshotDeviceObject;
var pathNoRoot = srcPath.Substring(rootPath.Length);
var path = Path.Combine(snapshotPath, pathNoRoot);
if (File.Exists(destPath))
{
File.Delete(destPath);
}
Alphaleonis.Win32.Filesystem.File.Copy(path, destPath);
}
finally
{
vss.DeleteSnapshotSet(vssSet, true);
}
}
}
private void BackupSubset(IDictionary <string, string> vmNamesMapSubset, Options options)
{
IVssImplementation vssImpl = VssUtils.LoadImplementation();
using (IVssBackupComponents vss = vssImpl.CreateVssBackupComponents())
{
RaiseEvent(EventAction.InitializingVSS, null, null);
vss.InitializeForBackup(null);
vss.SetBackupState(true, true, VssBackupType.Full, false);
vss.SetContext(VssSnapshotContext.Backup);
// Add Hyper-V writer
Guid hyperVwriterGuid = new Guid("66841cd4-6ded-4f4b-8f17-fd23f8ddc3de");
vss.EnableWriterClasses(new Guid[] { hyperVwriterGuid });
vss.GatherWriterMetadata();
IList <IVssWMComponent> components = new List <IVssWMComponent>();
// key: volumePath, value: volumeName. These values are equivalent on a standard volume, but differ in the CSV case
IDictionary <string, string> volumeMap = new Dictionary <string, string>();
var wm = vss.WriterMetadata.Where((o) => o.WriterId.Equals(hyperVwriterGuid)).FirstOrDefault();
foreach (var component in wm.Components)
{
if (vmNamesMapSubset.ContainsKey(component.ComponentName))
{
components.Add(component);
vss.AddComponent(wm.InstanceId, wm.WriterId, component.Type, component.LogicalPath, component.ComponentName);
foreach (var file in component.Files)
{
string volumeName = null;
string volumePath = null;
volumePath = Path.GetPathRoot(file.Path).ToUpper();
volumeName = volumePath;
if (!volumeMap.ContainsKey(volumePath))
{
volumeMap.Add(volumePath, volumeName);
}
}
}
}
if (components.Count > 0)
{
Guid vssSet = vss.StartSnapshotSet();
// Key: volumeName, value: snapshotGuid
IDictionary <string, Guid> snapshots = new Dictionary <string, Guid>();
foreach (var volumeName in volumeMap.Values)
{
snapshots.Add(volumeName, vss.AddToSnapshotSet(volumeName, Guid.Empty));
}
vss.PrepareForBackup();
RaiseEvent(EventAction.StartingSnaphotSet, components, volumeMap);
vss.DoSnapshotSet();
RaiseEvent(EventAction.SnapshotSetDone, components, volumeMap);
// key: volumeName, value: snapshotVolumePath
IDictionary <string, string> snapshotVolumeMap = new Dictionary <string, string>();
foreach (var kv in snapshots)
{
snapshotVolumeMap.Add(kv.Key, vss.GetSnapshotProperties(kv.Value).SnapshotDeviceObject);
}
BackupFiles(components, volumeMap, snapshotVolumeMap, vmNamesMapSubset, options);
foreach (var component in components)
{
vss.SetBackupSucceeded(wm.InstanceId, wm.WriterId, component.Type, component.LogicalPath, component.ComponentName, true);
}
vss.BackupComplete();
RaiseEvent(EventAction.DeletingSnapshotSet, components, volumeMap);
vss.DeleteSnapshotSet(vssSet, true);
}
}
}
/// <summary>
/// Remove all snapshots.
/// </summary>
public void Delete()
{
_backup.DeleteSnapshotSet(_set_id, false);
}
/// <summary>
/// Makes a recursive snapshot of the directory as it is.
/// </summary>
/// <param name="baseDirectory">The directory to start in.</param>
/// <returns>A file system snapshot</returns>
public static SnapshotFilesystem MakeFsSnapshot(System.IO.DirectoryInfo baseDirectory)
{
DirectoryInfo baseDir = new DirectoryInfo(baseDirectory.FullName);
if (!baseDir.Exists)
{
throw new ArgumentException("Base directory doesn't exist");
}
SnapshotFilesystem res = new SnapshotFilesystem();
if (!baseDir.FullName.EndsWith(Path.DirectorySeparatorChar) && !baseDir.FullName.EndsWith(Path.AltDirectorySeparatorChar))
{
// Add ending slash to get a uniform output
baseDir = new DirectoryInfo(baseDir.FullName + Path.DirectorySeparatorChar);
}
res.BasePath = baseDir.FullName;
res.Items = new LinkedList <SnapshotFilesystemItem>();
// Make VSS
// Sequence of calls: http://us.generation-nt.com/answer/volume-shadow-copy-backupcomplete-vss-e-bad-state-help-29094302.html
IVssImplementation vssImplementation = VssUtils.LoadImplementation();
IVssBackupComponents backupComponents = vssImplementation.CreateVssBackupComponents();
backupComponents.InitializeForBackup(null);
backupComponents.SetContext(VssSnapshotContext.Backup);
backupComponents.SetBackupState(false, false, VssBackupType.Copy, false);
backupComponents.GatherWriterMetadata();
try
{
Guid snapshotSetGuid = backupComponents.StartSnapshotSet();
Guid backupVolumeGuid = backupComponents.AddToSnapshotSet(baseDir.Root.FullName);
backupComponents.PrepareForBackup();
backupComponents.DoSnapshotSet();
VssSnapshotProperties properties = backupComponents.GetSnapshotProperties(backupVolumeGuid);
DirectoryInfo shadowCopyBase = new DirectoryInfo(Path.Combine(properties.SnapshotDeviceObject, Path.GetDirectoryNameWithoutRoot(baseDir.FullName)));
if (!shadowCopyBase.FullName.EndsWith(Path.DirectorySeparatorChar) && !shadowCopyBase.FullName.EndsWith(Path.AltDirectorySeparatorChar))
{
// Add ending slash to get a uniform output
shadowCopyBase = new DirectoryInfo(shadowCopyBase.FullName + Path.DirectorySeparatorChar);
}
// Do stuff
DoFsSnapshot(shadowCopyBase, shadowCopyBase, res.Items);
// Delete snapshot
backupComponents.BackupComplete();
backupComponents.DeleteSnapshotSet(snapshotSetGuid, false);
}
catch (Exception)
{
backupComponents.AbortBackup();
}
//DoFsSnapshot(baseDirectory, baseDirectory, res.Items);
return(res);
}
// Remove all snapshots.
public void DeleteSnapshots()
{
_backup.DeleteSnapshotSet(_snapshotSetId, false);
}
