/// <inheritdoc />
public int ReadFrom(byte[] buffer, int offset)
{
Label = EndianUtilities.BytesToString(buffer, offset, 0x8);
Sector = EndianUtilities.ToUInt64LittleEndian(buffer, offset + 0x8);
Crc = EndianUtilities.ToUInt32LittleEndian(buffer, offset + 0x10);
CalculatedCrc = PhysicalVolume.CalcCrc(buffer, offset + 0x14, PhysicalVolume.SECTOR_SIZE - 0x14);
Offset = EndianUtilities.ToUInt32LittleEndian(buffer, offset + 0x14);
Label2 = EndianUtilities.BytesToString(buffer, offset + 0x18, 0x8);
return(Size);
}
/// <summary>
/// Determines if a physical volume contains LVM data.
/// </summary>
/// <param name="volumeInfo">The volume to inspect.</param>
/// <returns><c>true</c> if the physical volume contains LVM data, else <c>false</c>.</returns>
public static bool HandlesPhysicalVolume(PhysicalVolumeInfo volumeInfo)
{
var partition = volumeInfo.Partition;
if (partition == null)
{
return(false);
}
return(partition.BiosType == BiosPartitionTypes.LinuxLvm ||
partition.GuidType == GuidPartitionTypes.LinuxLvm ||
PhysicalVolume.CanOpen(partition));
}
public static bool TryOpen(Stream content, out PhysicalVolume pv)
{
PhysicalVolumeLabel label;
pv = null;
if (!SearchLabel(content, out label))
{
return(false);
}
pv = new PhysicalVolume(label, content);
return(true);
}
/// <inheritdoc />
public int ReadFrom(byte[] buffer, int offset)
{
Crc = Utilities.ToUInt32LittleEndian(buffer, offset);
CalculatedCrc = PhysicalVolume.CalcCrc(buffer, offset + 0x4, PhysicalVolume.SECTOR_SIZE - 0x4);
Magic = Utilities.BytesToString(buffer, offset + 0x4, 0x10);
Version = Utilities.ToUInt32LittleEndian(buffer, offset + 0x14);
Start = Utilities.ToUInt64LittleEndian(buffer, offset + 0x18);
Length = Utilities.ToUInt64LittleEndian(buffer, offset + 0x20);
var locations = new List <RawLocation>();
var locationOffset = offset + 0x28;
while (true)
{
var location = new RawLocation();
locationOffset += location.ReadFrom(buffer, locationOffset);
if (location.Offset == 0 && location.Length == 0 && location.Checksum == 0 && location.Flags == 0)
{
break;
}
locations.Add(location);
}
RawLocations = locations.ToArray();
foreach (var location in RawLocations)
{
if ((location.Flags & RawLocationFlags.Ignored) != 0)
{
continue;
}
var checksum = PhysicalVolume.CalcCrc(buffer, (int)location.Offset, (int)location.Length);
if (location.Checksum != checksum)
{
throw new IOException("invalid metadata checksum");
}
Metadata = Utilities.BytesToString(buffer, (int)location.Offset, (int)location.Length);
ParsedMetadata = Lvm.Metadata.Parse(Metadata);
break;
}
return(Size);
}
/// <summary>
/// Initializes a new instance of the LogicalVolumeManager class.
/// </summary>
/// <param name="disks">The initial set of disks to manage.</param>
public LogicalVolumeManager(IEnumerable <VirtualDisk> disks)
{
_devices = new List <PhysicalVolume>();
_volumeGroups = new List <MetadataVolumeGroupSection>();
foreach (var disk in disks)
{
if (disk.IsPartitioned)
{
foreach (var partition in disk.Partitions.Partitions)
{
PhysicalVolume pv;
if (PhysicalVolume.TryOpen(partition, out pv))
{
_devices.Add(pv);
}
}
}
else
{
PhysicalVolume pv;
if (PhysicalVolume.TryOpen(disk.Content, out pv))
{
_devices.Add(pv);
}
}
}
foreach (var device in _devices)
{
foreach (var vg in device.VgMetadata.ParsedMetadata.VolumeGroupSections)
{
if (!_volumeGroups.Exists(x => x.Id == vg.Id))
{
_volumeGroups.Add(vg);
}
}
}
}
public static bool TryOpen(PartitionInfo volumeInfo, out PhysicalVolume pv)
{
var content = volumeInfo.Open();
return(TryOpen(content, out pv));
}