public static void ConvertStripedVolumeToRaid(DiskGroupDatabase database, Guid volumeGuid)
{
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = database.FindVolumeByVolumeGuid(volumeGuid);
if (volumeRecord == null)
{
throw new MissingDatabaseRecordException("Volume record is missing");
}
volumeRecord = (VolumeRecord)volumeRecord.Clone();
volumeRecord.VolumeTypeString = "raid5";
volumeRecord.ReadPolicy = ReadPolicyName.RAID;
volumeRecord.VolumeFlags = VolumeFlags.DefaultUnknown | VolumeFlags.Writeback | VolumeFlags.Writecopy;
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.ExtentLayout = ExtentLayoutName.RAID5;
records.Add(componentRecord);
database.UpdateDatabase(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);
}