public override void WriteDatabaseRecordFragment(DatabaseRecordFragment fragment)
{
foreach (DynamicDisk disk in m_disks)
{
VolumeManagerDatabase.WriteDatabaseRecordFragment(disk, fragment, (int)this.DatabaseHeader.BlockSize);
}
}
public static List <DiskGroupDatabase> ReadFromDisks(List <DynamicDisk> disks)
{
Dictionary <Guid, List <DynamicDisk> > groups = new Dictionary <Guid, List <DynamicDisk> >();
foreach (DynamicDisk disk in disks)
{
Guid diskGroupGuid = disk.PrivateHeader.DiskGroupGuid;
if (groups.ContainsKey(diskGroupGuid))
{
groups[diskGroupGuid].Add(disk);
}
else
{
List <DynamicDisk> list = new List <DynamicDisk>();
list.Add(disk);
groups.Add(diskGroupGuid, list);
}
}
List <DiskGroupDatabase> result = new List <DiskGroupDatabase>();
foreach (List <DynamicDisk> groupDisks in groups.Values)
{
VolumeManagerDatabase database = VolumeManagerDatabase.ReadFromDisk(groupDisks[0]);
if (database != null) // if there is issue with one disk (such as unsupported version) we skip the group entirely
{
DiskGroupDatabase groupDatabase = new DiskGroupDatabase(groupDisks, database.DatabaseHeader, database.DatabaseRecords, database.KernelUpdateLog);
result.Add(groupDatabase);
}
}
return(result);
}
private static List <ExtentRecord> GetRetainedExtentsOnDisk(DynamicDisk disk, out long bootPartitionStartLBA)
{
VolumeManagerDatabase database = VolumeManagerDatabase.ReadFromDisk(disk);
DiskRecord diskRecord = database.FindDiskByDiskGuid(disk.DiskGuid);
bootPartitionStartLBA = -1;
List <ExtentRecord> result = new List <ExtentRecord>();
foreach (VolumeRecord volume in database.VolumeRecords)
{
if ((volume.VolumeFlags & VolumeFlags.RetainPartition) > 0)
{
List <ComponentRecord> components = database.FindComponentsByVolumeID(volume.VolumeId);
foreach (ComponentRecord componentRecord in components)
{
if (componentRecord.ExtentLayout == ExtentLayoutName.Concatenated)
{
if (componentRecord.NumberOfExtents == 1)
{
List <ExtentRecord> extents = database.FindExtentsByComponentID(componentRecord.ComponentId);
if (extents.Count == 1)
{
ExtentRecord extent = extents[0];
if (extent.DiskId == diskRecord.DiskId)
{
result.Add(extent);
if ((volume.VolumeFlags & VolumeFlags.BootVolume) > 0)
{
bootPartitionStartLBA = (long)(disk.PrivateHeader.PublicRegionStartLBA + extent.DiskOffsetLBA);
}
}
}
}
}
}
}
}
return(result);
}
public override void VerifyDatabaseConsistency()
{
base.VerifyDatabaseConsistency();
// Make sure database is identical across disks
for (int index = 1; index < m_disks.Count; index++)
{
VolumeManagerDatabase seconary = VolumeManagerDatabase.ReadFromDisk(m_disks[index]);
seconary.VerifyDatabaseConsistency();
if (this.DatabaseHeader.DiskGroupGuidString != seconary.DatabaseHeader.DiskGroupGuidString ||
this.DatabaseHeader.DiskGroupName != seconary.DatabaseHeader.DiskGroupName)
{
throw new NotImplementedException("More than one disk group detected");
}
if (this.DatabaseHeader.CommitTransactionID != seconary.DatabaseHeader.CommitTransactionID)
{
throw new NotImplementedException("Inconsistent disk group state");
}
}
}
/// <summary>
/// Sorted by first sector
/// </summary>
/// <returns>null if there was a problem reading extent information from disk</returns>
public static List <DynamicDiskExtent> GetDiskExtents(DynamicDisk disk)
{
List <DynamicDiskExtent> result = new List <DynamicDiskExtent>();
PrivateHeader privateHeader = disk.PrivateHeader;
if (privateHeader != null)
{
VolumeManagerDatabase database = VolumeManagerDatabase.ReadFromDisk(disk);
if (database != null)
{
DiskRecord diskRecord = database.FindDiskByDiskGuid(privateHeader.DiskGuid);
List <ExtentRecord> extentRecords = database.FindExtentsByDiskID(diskRecord.DiskId);
foreach (ExtentRecord extentRecord in extentRecords)
{
DynamicDiskExtent extent = DynamicDiskExtentHelper.GetDiskExtent(disk, extentRecord);
result.Add(extent);
}
DynamicDiskExtentsHelper.SortExtentsByFirstSector(result);
return(result);
}
}
return(null);
}
