public static string GetExtentsInformation(DynamicVolume volume)
{
List <DynamicDiskExtent> extents = volume.DynamicExtents;
StringBuilder builder = new StringBuilder();
for (int extentIndex = 0; extentIndex < extents.Count; extentIndex++)
{
DynamicDiskExtent extent = extents[extentIndex];
string extentOffsetString;
string diskIDString = String.Empty;
if (extent.Disk != null)
{
long extentOffset = extent.FirstSector * extent.Disk.BytesPerSector;
extentOffsetString = FormattingHelper.GetStandardSizeString(extentOffset);
VolumeManagerDatabase database = VolumeManagerDatabase.ReadFromDisk(extent.Disk);
if (database != null)
{
ExtentRecord extentRecord = database.FindExtentByExtentID(extent.ExtentID);
if (extentRecord != null)
{
diskIDString = extentRecord.DiskId.ToString();
}
}
}
else
{
extentOffsetString = "N/A";
}
string extentSizeString = FormattingHelper.GetStandardSizeString(extent.Size);
builder.AppendFormat("Extent {0}, ID: {1}, Name: {2}, Size: {3}, Disk ID: {4}, Offset: {5}, Start Sector: {6}\n",
extentIndex, extent.ExtentID, extent.Name, extentSizeString, diskIDString, extentOffsetString, extent.FirstSector);
}
return(builder.ToString());
}
/// <summary>
/// Support null disks
/// </summary>
public static ulong GetExtentStartSector(DynamicDisk disk, ExtentRecord extentRecord)
{
ulong dataStartLBA = 0;
if (disk != null)
{
PrivateHeader privateHeader = disk.PrivateHeader;
dataStartLBA = privateHeader.PublicRegionStartLBA;
}
ulong extentStartSector = dataStartLBA + extentRecord.DiskOffsetLBA;
return(extentStartSector);
}
/// <summary>
/// Support null disks
/// </summary>
public static DynamicDiskExtent GetDiskExtent(DynamicDisk dynamicDisk, ExtentRecord extentRecord)
{
ulong extentStartSector = GetExtentStartSector(dynamicDisk, extentRecord);
int bytesPerSector = 512; // default for missing disk
Disk disk = null;
Guid diskGuid = Guid.Empty;
if (dynamicDisk != null)
{
bytesPerSector = dynamicDisk.BytesPerSector;
disk = dynamicDisk.Disk;
diskGuid = dynamicDisk.DiskGuid;
}
DynamicDiskExtent extent = new DynamicDiskExtent(disk, (long)extentStartSector, (long)extentRecord.SizeLBA * bytesPerSector, extentRecord.ExtentId);
extent.Name = extentRecord.Name;
extent.DiskGuid = diskGuid;
return(extent);
}
private static SimpleVolume GetSimpleVolume(List <DynamicDisk> disks, VolumeManagerDatabase 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(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");
}
}
public static void ListExtents()
{
if (m_selectedVolume != null)
{
Console.WriteLine("Extent ## ID Name Size DiskID Offset Start Sector");
Console.WriteLine("--------- ---- --------- ------- ------ ------- ------------");
for (int index = 0; index < m_selectedVolume.Extents.Count; index++)
{
DiskExtent extent = m_selectedVolume.Extents[index];
string extentNumber = index.ToString().PadLeft(2);
ulong extentID = 0;
ulong diskID = 0;
string name = String.Empty;
if (extent is DynamicDiskExtent)
{
extentID = ((DynamicDiskExtent)extent).ExtentID;
name = ((DynamicDiskExtent)extent).Name;
if (extent.Disk != null)
{
VolumeManagerDatabase database = VolumeManagerDatabase.ReadFromDisk(extent.Disk);
if (database != null)
{
ExtentRecord extentRecord = database.FindExtentByExtentID(extentID);
diskID = extentRecord.DiskId;
}
}
}
string offsetString;
if (extent.Disk != null)
{
long offset = extent.FirstSector * extent.Disk.BytesPerSector;
offsetString = GetStandardSizeString(offset);
}
else
{
offsetString = " N/A";
}
long size = extent.Size;
name = name.ToString().PadRight(9);
string extentIDString = String.Empty;
if (extentID != 0)
{
extentIDString = extentID.ToString();
}
extentIDString = extentIDString.PadLeft(4);
string diskIDString = String.Empty;
if (diskID != 0)
{
diskIDString = diskID.ToString();
}
diskIDString = diskIDString.PadLeft(6);
string startSector = extent.FirstSector.ToString().PadLeft(12);
Console.WriteLine("Extent {0} {1} {2} {3} {4} {5} {6}", extentNumber, extentIDString, name, GetStandardSizeString(size), diskIDString, offsetString, startSector);
}
}
else
{
Console.WriteLine("No volume has been selected");
}
}
