public SyncVolume( XmlNode parentNode )
{
mName = PWLib.XmlHelp.GetAttribute( parentNode, "name", "" );
mSource = VolumeSource.BuildFromXml( parentNode );
mArchive = BaseArchive.BuildFromXml( parentNode );
mDatabase = VolumeSnapshotDatabase.LoadFromXml( parentNode );
}
public SyncVolume(XmlNode parentNode)
{
mName = PWLib.XmlHelp.GetAttribute(parentNode, "name", "");
mSource = VolumeSource.BuildFromXml(parentNode);
mArchive = BaseArchive.BuildFromXml(parentNode);
mDatabase = VolumeSnapshotDatabase.LoadFromXml(parentNode);
}
public SyncVolume( string name, VolumeSource source, BaseArchive archive )
{
mName = name;
mSource = source;
mDatabase = new VolumeSnapshotDatabase( archive.GetSnapshotXmlDir() );
mArchive = archive;
}
public void MergeSnapshotRevisionsByTimeLimit(VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, TimeSpan timePeriodToKeep)
{
// only keep revisions within a certain time period (e.g. last 6 months)
List <VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
int numRevisionsToRemove = 0;
DateTime cutOffDate = DateTime.Now - timePeriodToKeep;
foreach (VolumeSnapshotRevision revision in revisionHistory)
{
if (revision.CreationTime >= cutOffDate)
{
break;
}
else
{
numRevisionsToRemove++;
}
}
if (numRevisionsToRemove > 0)
{
FileSync.__Log(this, "Merge will remove " + numRevisionsToRemove + " revisions");
MergeSnapshotRevisions(database, source, archive, numRevisionsToRemove);
}
else
{
FileSync.__Log(this, "Merge will not remove any revisions");
}
}
public SyncVolume(string name, VolumeSource source, BaseArchive archive)
{
mName = name;
mSource = source;
mDatabase = new VolumeSnapshotDatabase(archive.GetSnapshotXmlDir());
mArchive = archive;
}
public BackupRestoreVolume(string name, VolumeSource source, BaseArchive archive)
{
mName = name;
mSource = source;
mArchive = archive;
mDatabase = new VolumeSnapshotDatabase(archive.GetSnapshotXmlDir());
Init();
}
void MergeSnapshotRevisions( VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, int numRevisionsToRemove )
{
try
{
mDatabase = database;
mArchive = archive;
mBusy = true;
List<VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
if ( numRevisionsToRemove == revisionHistory.Count )
{
// Need to remove all old revisions, delete everything
FileSync.__Log( this, "Merge deleting all revisions" );
database.DeleteAllRevisions();
}
else
{
// now we know how many revisions to remove, need to rebuild the new first revision.
VolumeSnapshotRevision currentRevision = revisionHistory[ numRevisionsToRemove ];
VolumeSnapshot currentSnapshot = database.LoadSnapshotRevision( source, currentRevision );
FileSync.__Log( this, "Merge is turning revision [" + currentRevision.ToString() + "] into baseline" );
TurnSnapshotIntoBaseline( currentSnapshot );
// Now go through all existing snapshot .xml files and change any files referencing
// a snapshot that has been removed and change it to the current snapshot revision.
for ( int revisionNum = numRevisionsToRemove + 1; revisionNum < revisionHistory.Count; ++revisionNum )
{
VolumeSnapshotRevision incrementalRevision = revisionHistory[ revisionNum ];
VolumeSnapshot incrementalSnapshot = database.LoadSnapshotRevision( source, incrementalRevision );
FileSync.__Log( this, "Merge is reflecting revision [" + incrementalRevision.ToString() + "] into new baseline [" + currentRevision.ToString() + "]" );
UpdateSnapshotToReflectBaselineRevision( incrementalSnapshot, currentRevision );
}
// delete old revision data
for ( int revisionNum = 0; revisionNum < numRevisionsToRemove; ++revisionNum )
{
VolumeSnapshotRevision revisionToDelete = revisionHistory[ revisionNum ];
FileSync.__Log( this, "Merge is deleting revision [" + revisionToDelete.ToString() + "]" );
database.DeleteSnapshotRevision( revisionToDelete );
}
}
}
catch ( System.Exception ex )
{
FileSync.__LogError( this, "Volume.CheckForExpiredSnapshotRevisions", ex );
}
finally
{
mBusy = false;
}
}
void MergeSnapshotRevisions(VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, int numRevisionsToRemove)
{
try
{
mDatabase = database;
mArchive = archive;
mBusy = true;
List <VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
if (numRevisionsToRemove == revisionHistory.Count)
{
// Need to remove all old revisions, delete everything
FileSync.__Log(this, "Merge deleting all revisions");
database.DeleteAllRevisions();
}
else
{
// now we know how many revisions to remove, need to rebuild the new first revision.
VolumeSnapshotRevision currentRevision = revisionHistory[numRevisionsToRemove];
VolumeSnapshot currentSnapshot = database.LoadSnapshotRevision(source, currentRevision);
FileSync.__Log(this, "Merge is turning revision [" + currentRevision.ToString() + "] into baseline");
TurnSnapshotIntoBaseline(currentSnapshot);
// Now go through all existing snapshot .xml files and change any files referencing
// a snapshot that has been removed and change it to the current snapshot revision.
for (int revisionNum = numRevisionsToRemove + 1; revisionNum < revisionHistory.Count; ++revisionNum)
{
VolumeSnapshotRevision incrementalRevision = revisionHistory[revisionNum];
VolumeSnapshot incrementalSnapshot = database.LoadSnapshotRevision(source, incrementalRevision);
FileSync.__Log(this, "Merge is reflecting revision [" + incrementalRevision.ToString() + "] into new baseline [" + currentRevision.ToString() + "]");
UpdateSnapshotToReflectBaselineRevision(incrementalSnapshot, currentRevision);
}
// delete old revision data
for (int revisionNum = 0; revisionNum < numRevisionsToRemove; ++revisionNum)
{
VolumeSnapshotRevision revisionToDelete = revisionHistory[revisionNum];
FileSync.__Log(this, "Merge is deleting revision [" + revisionToDelete.ToString() + "]");
database.DeleteSnapshotRevision(revisionToDelete);
}
}
}
catch (System.Exception ex)
{
FileSync.__LogError(this, "Volume.CheckForExpiredSnapshotRevisions", ex);
}
finally
{
mBusy = false;
}
}
public void MergeSnapshotRevisionsByLimitedRevisionCount( VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, int maxRevisions )
{
// only keep a specific number of revisions
List<VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
int numRevisionsToRemove = 0;
if ( revisionHistory.Count > maxRevisions )
{
numRevisionsToRemove = revisionHistory.Count - maxRevisions;
}
if ( numRevisionsToRemove > 0 )
{
FileSync.__Log( this, "Merge will remove " + numRevisionsToRemove + " revisions" );
MergeSnapshotRevisions( database, source, archive, numRevisionsToRemove );
}
else
FileSync.__Log( this, "Merge will not remove any revisions" );
}
public void MergeSnapshotRevisionsByLimitedRevisionCount(VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, int maxRevisions)
{
// only keep a specific number of revisions
List <VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
int numRevisionsToRemove = 0;
if (revisionHistory.Count > maxRevisions)
{
numRevisionsToRemove = revisionHistory.Count - maxRevisions;
}
if (numRevisionsToRemove > 0)
{
FileSync.__Log(this, "Merge will remove " + numRevisionsToRemove + " revisions");
MergeSnapshotRevisions(database, source, archive, numRevisionsToRemove);
}
else
{
FileSync.__Log(this, "Merge will not remove any revisions");
}
}
public void MergeSnapshotRevisionsByTimeLimit( VolumeSnapshotDatabase database, VolumeSource source, BaseArchive archive, TimeSpan timePeriodToKeep )
{
// only keep revisions within a certain time period (e.g. last 6 months)
List<VolumeSnapshotRevision> revisionHistory = database.GetRevisionHistory();
int numRevisionsToRemove = 0;
DateTime cutOffDate = DateTime.Now - timePeriodToKeep;
foreach ( VolumeSnapshotRevision revision in revisionHistory )
{
if ( revision.CreationTime >= cutOffDate )
{
break;
}
else
numRevisionsToRemove++;
}
if ( numRevisionsToRemove > 0 )
{
FileSync.__Log( this, "Merge will remove " + numRevisionsToRemove + " revisions" );
MergeSnapshotRevisions( database, source, archive, numRevisionsToRemove );
}
else
FileSync.__Log( this, "Merge will not remove any revisions" );
}