public static ulong CreateSimpleVolume(DiskGroupDatabase database, DiskExtent extent)
{
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = new VolumeRecord();
volumeRecord.Id = database.AllocateNewRecordID();
volumeRecord.Name = GetNextSimpleVolumeName(database.VolumeRecords);
volumeRecord.VolumeTypeString = "gen";
volumeRecord.StateString = "ACTIVE";
volumeRecord.ReadPolicy = ReadPolicyName.Select;
volumeRecord.VolumeNumber = GetNextVolumeNumber(database.VolumeRecords);
volumeRecord.VolumeFlags = VolumeFlags.Writeback | VolumeFlags.DefaultUnknown;
volumeRecord.NumberOfComponents = 1;
volumeRecord.SizeLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(extent.TotalSectors, extent.BytesPerSector);
volumeRecord.PartitionType = PartitionType.RAW;
volumeRecord.VolumeGuid = Guid.NewGuid();
records.Add(volumeRecord);
ComponentRecord componentRecord = new ComponentRecord();
componentRecord.Id = database.AllocateNewRecordID();
componentRecord.Name = volumeRecord.Name + "-01";
componentRecord.StateString = "ACTIVE";
componentRecord.ExtentLayout = ExtentLayoutName.Concatenated;
componentRecord.NumberOfExtents = 1;
componentRecord.VolumeId = volumeRecord.VolumeId;
componentRecord.HasStripedExtentsFlag = false;
componentRecord.NumberOfColumns = 0;
records.Add(componentRecord);
// we should update the disk record
PrivateHeader privateHeader = PrivateHeader.ReadFromDisk(extent.Disk);
DiskRecord diskRecord = database.FindDiskByDiskGuid(privateHeader.DiskGuid);
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
ExtentRecord extentRecord = new ExtentRecord();
extentRecord.Name = GetNextExtentName(database.ExtentRecords, diskRecord.Name);
extentRecord.DiskOffsetLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionLBA(extent.FirstSector, privateHeader);
extentRecord.SizeLBA = volumeRecord.SizeLBA;
extentRecord.ComponentId = componentRecord.ComponentId;
extentRecord.DiskId = diskRecord.DiskId;
extentRecord.HasColumnIndexFlag = false;
records.Add(extentRecord);
database.UpdateDatabase(records);
return(volumeRecord.VolumeId);
}
public static ulong CreateRAID5Volume(DiskGroupDatabase database, List <DiskExtent> extents, bool isDegraded)
{
int numberOfColumns;
if (isDegraded)
{
numberOfColumns = extents.Count + 1;
}
else
{
numberOfColumns = extents.Count;
}
List <DatabaseRecord> records = new List <DatabaseRecord>();
VolumeRecord volumeRecord = new VolumeRecord();
volumeRecord.Id = database.AllocateNewRecordID();
volumeRecord.Name = GetNextRAIDVolumeName(database.VolumeRecords);
volumeRecord.VolumeTypeString = "raid5";
volumeRecord.StateString = "ACTIVE";
volumeRecord.ReadPolicy = ReadPolicyName.RAID;
volumeRecord.VolumeNumber = GetNextVolumeNumber(database.VolumeRecords);
volumeRecord.VolumeFlags = VolumeFlags.Writeback | VolumeFlags.Writecopy | VolumeFlags.DefaultUnknown;
volumeRecord.NumberOfComponents = 1;
volumeRecord.SizeLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(extents[0].TotalSectors * (numberOfColumns - 1), extents[0].BytesPerSector);
volumeRecord.PartitionType = PartitionType.RAW;
volumeRecord.VolumeGuid = Guid.NewGuid();
records.Add(volumeRecord);
ComponentRecord componentRecord = new ComponentRecord();
componentRecord.Id = database.AllocateNewRecordID();
componentRecord.Name = volumeRecord.Name + "-01";
componentRecord.StateString = "ACTIVE";
componentRecord.ExtentLayout = ExtentLayoutName.RAID5;
componentRecord.NumberOfExtents = (uint)numberOfColumns;
componentRecord.VolumeId = volumeRecord.VolumeId;
componentRecord.HasStripedExtentsFlag = true;
componentRecord.StripeSizeLBA = 128; // 64KB - the default
componentRecord.NumberOfColumns = (uint)numberOfColumns;
records.Add(componentRecord);
for (int index = 0; index < extents.Count; index++)
{
DiskExtent extent = extents[index];
// we should update the disk records
PrivateHeader privateHeader = PrivateHeader.ReadFromDisk(extent.Disk);
DiskRecord diskRecord = database.FindDiskByDiskGuid(privateHeader.DiskGuid);
diskRecord = (DiskRecord)diskRecord.Clone();
records.Add(diskRecord);
ExtentRecord extentRecord = new ExtentRecord();
extentRecord.Name = GetNextExtentName(database.ExtentRecords, diskRecord.Name);
extentRecord.DiskOffsetLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionLBA(extent.FirstSector, privateHeader);
extentRecord.SizeLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(extent.TotalSectors, extent.BytesPerSector);
extentRecord.ComponentId = componentRecord.ComponentId;
extentRecord.DiskId = diskRecord.DiskId;
extentRecord.HasColumnIndexFlag = (index > 0);
extentRecord.ColumnIndex = (uint)index; // zero based
records.Add(extentRecord);
}
if (isDegraded)
{
// we have to make-up a disk
// The DiskFlags and ExtentFlags are not necessary (they will be added later anyway when the disk group is reimported)
DiskRecord diskRecord = new DiskRecord();
diskRecord.Id = database.AllocateNewRecordID();
diskRecord.Name = "Miss" + new Random().Next(100);
diskRecord.DiskGuid = Guid.NewGuid();
diskRecord.DiskFlags = DiskFlags.Detached;
records.Add(diskRecord);
ExtentRecord extentRecord = new ExtentRecord();
extentRecord.Name = diskRecord.Name + "-01";
extentRecord.ExtentFlags = ExtentFlags.Recover;
extentRecord.SizeLBA = (ulong)PublicRegionHelper.TranslateToPublicRegionSizeLBA(extents[0].TotalSectors, extents[0].BytesPerSector);
extentRecord.ComponentId = componentRecord.ComponentId;
extentRecord.DiskId = diskRecord.DiskId;
extentRecord.HasColumnIndexFlag = true;
extentRecord.ColumnIndex = (uint)extents.Count; // zero based
records.Add(extentRecord);
}
database.UpdateDatabase(records);
return(volumeRecord.VolumeId);
}
