public static void ExtendRAID5Volume(DiskGroupDatabase database, Raid5Volume volume, long numberOfAdditionalExtentSectors)
{
if (numberOfAdditionalExtentSectors % volume.SectorsPerStripe > 0)
{
throw new ArgumentException("Number of additional sectors must be multiple of stripes per sector");
}
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.SizeLBA += (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(numberOfAdditionalExtentSectors * (volume.NumberOfColumns - 1), volume.BytesPerSector);
records.Add(volumeRecord);
foreach (DynamicColumn column in volume.Columns)
{
DynamicDiskExtent lastExtent = column.Extents[column.Extents.Count - 1];
ExtentRecord extentRecord = database.FindExtentByExtentID(lastExtent.ExtentID);
extentRecord = (ExtentRecord)extentRecord.Clone();
extentRecord.SizeLBA += (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(numberOfAdditionalExtentSectors, volume.BytesPerSector);
records.Add(extentRecord);
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId); // we should update the disk, see Database.cs
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
}
database.UpdateDatabase(records);
}
/// <summary>
/// Update the database to point to the new extent location (same or different disk)
/// </summary>
public static void UpdateExtentLocation(DiskGroupDatabase database, DynamicVolume volume, DynamicDiskExtent relocatedExtent)
{
PrivateHeader privateHeader = PrivateHeader.ReadFromDisk(relocatedExtent.Disk);
DiskRecord targetDiskRecord = database.FindDiskByDiskGuid(privateHeader.DiskGuid);
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
List <DatabaseRecord> records = new List <DatabaseRecord>();
ExtentRecord sourceExtentRecord = database.FindExtentByExtentID(relocatedExtent.ExtentID);
ExtentRecord relocatedExtentRecord = (ExtentRecord)sourceExtentRecord.Clone();
relocatedExtentRecord.DiskId = targetDiskRecord.DiskId;
relocatedExtentRecord.DiskOffsetLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionLBA(relocatedExtent.FirstSector, privateHeader);
records.Add(relocatedExtentRecord);
// we should update the disk records
foreach (DynamicDiskExtent extent in volume.Extents)
{
DiskRecord diskRecord = database.FindDiskByDiskID(relocatedExtentRecord.DiskId);
// there could be multiple extents on the same disk, make sure we only add each disk once
if (!records.Contains(diskRecord))
{
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
}
}
// when moving to a new disk, we should update the new disk record as well
if (!records.Contains(targetDiskRecord))
{
records.Add(targetDiskRecord.Clone());
}
database.UpdateDatabase(records);
}
public static void ExtendStripedVolume(DiskGroupDatabase database, StripedVolume volume, long additionalNumberOfExtentSectors)
{
if (additionalNumberOfExtentSectors % volume.SectorsPerStripe > 0)
{
throw new ArgumentException("Number of additional sectors must be multiple of stripes per sector");
}
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.SizeLBA += (ulong)(additionalNumberOfExtentSectors * volume.NumberOfColumns);
records.Add(volumeRecord);
// we only want to extend the last extent in each column
foreach (DynamicColumn column in volume.Columns)
{
DynamicDiskExtent lastExtent = column.Extents[column.Extents.Count - 1];
ExtentRecord extentRecord = database.FindExtentByExtentID(lastExtent.ExtentID);
extentRecord = (ExtentRecord)extentRecord.Clone();
extentRecord.SizeLBA += (ulong)additionalNumberOfExtentSectors;
records.Add(extentRecord);
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId); // we should update the disk, see Database.cs
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
}
database.UpdateDatabase(records);
}
private static List <DynamicColumn> GetDynamicVolumeColumns(DiskGroupDatabase database, ComponentRecord componentRecord, VolumeRecord volumeRecord)
{
// extentRecords are sorted by offset in column
List <ExtentRecord> extentRecords = database.FindExtentsByComponentID(componentRecord.ComponentId);
if (componentRecord.NumberOfExtents != extentRecords.Count || extentRecords.Count == 0)
{
// database record is invalid
throw new InvalidDataException("Number of extents in component record does not match actual number of extent records");
}
SortedList <uint, List <DynamicDiskExtent> > columns = new SortedList <uint, List <DynamicDiskExtent> >();
foreach (ExtentRecord extentRecord in extentRecords)
{
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId);
DynamicDisk disk = DynamicDiskHelper.FindDisk(database.Disks, diskRecord.DiskGuid); // we add nulls as well
DynamicDiskExtent extent = DynamicDiskExtentHelper.GetDiskExtent(disk, extentRecord);
if (columns.ContainsKey(extentRecord.ColumnIndex))
{
columns[extentRecord.ColumnIndex].Add(extent);
}
else
{
List <DynamicDiskExtent> list = new List <DynamicDiskExtent>();
list.Add(extent);
columns.Add(extentRecord.ColumnIndex, list);
}
}
List <DynamicColumn> result = new List <DynamicColumn>();
foreach (List <DynamicDiskExtent> extents in columns.Values)
{
result.Add(new DynamicColumn(extents));
}
return(result);
}
public static void ExtendSimpleVolume(DiskGroupDatabase database, SimpleVolume volume, long numberOfAdditionalSectors)
{
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.SizeLBA += (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(numberOfAdditionalSectors, volume.BytesPerSector);
ExtentRecord extentRecord = database.FindExtentByExtentID(volume.DiskExtent.ExtentID);
extentRecord = (ExtentRecord)extentRecord.Clone();
extentRecord.SizeLBA += (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(numberOfAdditionalSectors, volume.BytesPerSector);
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId); // we should update the disk, see Database.cs
diskRecord = (DiskRecord)diskRecord.Clone();
List <DatabaseRecord> records = new List <DatabaseRecord>();
records.Add(volumeRecord);
records.Add(extentRecord);
records.Add(diskRecord);
database.UpdateDatabase(records);
}
public static void ExtendSimpleVolume(DiskGroupDatabase database, SimpleVolume volume, long additionalNumberOfSectors)
{
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.SizeLBA += (ulong)additionalNumberOfSectors;
ExtentRecord extentRecord = database.FindExtentByExtentID(volume.DiskExtent.ExtentID);
extentRecord = (ExtentRecord)extentRecord.Clone();
extentRecord.SizeLBA += (ulong)additionalNumberOfSectors;
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId); // we should update the disk, see Database.cs
diskRecord = (DiskRecord)diskRecord.Clone();
List <DatabaseRecord> records = new List <DatabaseRecord>();
records.Add(volumeRecord);
records.Add(extentRecord);
records.Add(diskRecord);
database.UpdateDatabase(records);
}
private static SimpleVolume GetSimpleVolume(DiskGroupDatabase database, ComponentRecord componentRecord, VolumeRecord volumeRecord)
{
List <ExtentRecord> extentRecords = database.FindExtentsByComponentID(componentRecord.ComponentId);
if (extentRecords.Count == 1)
{
ExtentRecord extentRecord = extentRecords[0];
DiskRecord diskRecord = database.FindDiskByDiskID(extentRecord.DiskId);
DynamicDisk disk = DynamicDiskHelper.FindDisk(database.Disks, diskRecord.DiskGuid); // we add nulls as well
DynamicDiskExtent extent = DynamicDiskExtentHelper.GetDiskExtent(disk, extentRecord);
SimpleVolume volume = new SimpleVolume(extent, volumeRecord.VolumeGuid, database.DiskGroupGuid);
volume.VolumeID = volumeRecord.VolumeId;
volume.Name = volumeRecord.Name;
volume.DiskGroupName = database.DiskGroupName;
return(volume);
}
else
{
// component / extent records are invalid
throw new InvalidDataException("Number of extents in component record does not match actual number of extent records");
}
}
/// <summary>
/// Update the database (add the new extent)
/// </summary>
/// <param name="volume">RAID-5 or striped volume</param>
/// <returns>new extent ID</returns>
public static ulong AddNewExtentToVolume(DiskGroupDatabase database, DynamicVolume volume, DiskExtent newExtent)
{
PrivateHeader privateHeader = PrivateHeader.ReadFromDisk(newExtent.Disk);
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volume.VolumeGuid);
if (volumeRecord == null)
{
throw new MissingDatabaseRecordException("Volume record is missing");
}
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.SizeLBA += (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(newExtent.TotalSectors, privateHeader);
records.Add(volumeRecord);
ComponentRecord componentRecord = database.FindComponentsByVolumeID(volumeRecord.VolumeId)[0];
if (componentRecord == null)
{
throw new MissingDatabaseRecordException("Component record is missing");
}
componentRecord = (ComponentRecord)componentRecord.Clone();
componentRecord.NumberOfExtents++;
componentRecord.NumberOfColumns++;
records.Add(componentRecord);
DiskRecord diskRecord = database.FindDiskByDiskGuid(privateHeader.DiskGuid);
if (diskRecord == null)
{
throw new MissingDatabaseRecordException("Disk record is missing");
}
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
ExtentRecord newExtentRecord = new ExtentRecord();
newExtentRecord.Name = GetNextExtentName(database.ExtentRecords, diskRecord.Name);
newExtentRecord.ComponentId = componentRecord.ComponentId;
newExtentRecord.DiskId = diskRecord.DiskId;
newExtentRecord.DiskOffsetLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionLBA(newExtent.FirstSector, privateHeader);
newExtentRecord.SizeLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(newExtent.TotalSectors, privateHeader);
newExtentRecord.HasColumnIndexFlag = true;
newExtentRecord.ColumnIndex = (uint)volume.Columns.Count; // zero based
records.Add(newExtentRecord);
// we should update the disk records and extent records
foreach (DynamicDiskExtent extent in volume.Extents)
{
ExtentRecord extentRecord = database.FindExtentByExtentID(extent.ExtentID);
if (extentRecord == null)
{
throw new MissingDatabaseRecordException("Extent record is missing");
}
extentRecord = (ExtentRecord)extentRecord.Clone();
records.Add(extentRecord);
diskRecord = database.FindDiskByDiskID(extentRecord.DiskId);
if (diskRecord == null)
{
throw new MissingDatabaseRecordException("Disk record is missing");
}
// there could be multiple extents on the same disk, make sure we only add each disk once
if (!records.Contains(diskRecord))
{
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
}
}
database.UpdateDatabase(records);
return(newExtentRecord.ExtentId);
}
