public static DiskGroupLockResult ExtendPartition(Partition volume, long numberOfAdditionalExtentSectors)
{
if (volume.Disk is PhysicalDisk)
{
if (Environment.OSVersion.Version.Major >= 6)
{
bool isReadOnly;
bool isOnline = ((PhysicalDisk)volume.Disk).GetOnlineStatus(out isReadOnly);
if (!isOnline || isReadOnly)
{
return(DiskGroupLockResult.OneOrMoreDisksAreOfflineOrReadonly);
}
}
LockStatus status = LockHelper.LockBasicDiskAndVolumesOrNone(((PhysicalDisk)volume.Disk));
if (status == LockStatus.CannotLockDisk)
{
return(DiskGroupLockResult.CannotLockDisk);
}
else if (status == LockStatus.CannotLockVolume)
{
return(DiskGroupLockResult.CannotLockVolume);
}
if (Environment.OSVersion.Version.Major >= 6)
{
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(false);
if (!success)
{
return(DiskGroupLockResult.CannotTakeDiskOffline);
}
}
}
ExtendHelper.ExtendPartition(volume, numberOfAdditionalExtentSectors);
if (volume.Disk is PhysicalDisk)
{
if (Environment.OSVersion.Version.Major >= 6)
{
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(true);
}
LockHelper.UnlockBasicDiskAndVolumes((PhysicalDisk)volume.Disk);
((PhysicalDisk)volume.Disk).UpdateProperties();
}
return(DiskGroupLockResult.Success);
}
private static ExtendFileSystemResult ExtendUnmountedFileSystem(Partition volume, long numberOfAdditionalSectors)
{
IExtendableFileSystem fileSystem = FileSystemHelper.ReadFileSystem(volume) as IExtendableFileSystem;
// Windows Vista / 7 enforce various limitations on direct write operations to volumes and disks.
// Basic disks are not needed to be taken offline for direct write operations within volume region. Only dynamic disks have to.
if (volume.Disk is PhysicalDisk && Environment.OSVersion.Version.Major >= 6)
{
bool isReadOnly;
bool isOnline = ((PhysicalDisk)volume.Disk).GetOnlineStatus(out isReadOnly);
if (!isOnline || isReadOnly)
{
return(ExtendFileSystemResult.OneOrMoreDisksAreOfflineOrReadonly);
}
LockStatus status = LockHelper.LockBasicDiskAndVolumesOrNone(((PhysicalDisk)volume.Disk));
if (status == LockStatus.CannotLockDisk)
{
return(ExtendFileSystemResult.CannotLockDisk);
}
else if (status == LockStatus.CannotLockVolume)
{
return(ExtendFileSystemResult.CannotLockVolume);
}
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(false);
if (!success)
{
return(ExtendFileSystemResult.CannotTakeDiskOffline);
}
}
fileSystem.Extend(numberOfAdditionalSectors);
if (volume.Disk is PhysicalDisk && (Environment.OSVersion.Version.Major >= 6))
{
bool success = ((PhysicalDisk)volume.Disk).SetOnlineStatus(true);
LockHelper.UnlockBasicDiskAndVolumes((PhysicalDisk)volume.Disk);
}
return(ExtendFileSystemResult.Success);
}
public static void ReleaseDisk(Disk disk)
{
if (disk is DiskImage)
{
((DiskImage)disk).ReleaseLock();
}
else if (disk is RAMDisk)
{
((RAMDisk)disk).Free();
}
#if Win32
else if (disk is PhysicalDisk)
{
if (!DiskAccessLibrary.LogicalDiskManager.DynamicDisk.IsDynamicDisk(disk))
{
LockHelper.UnlockBasicDiskAndVolumes((PhysicalDisk)disk);
try
{
((PhysicalDisk)disk).UpdateProperties();
}
catch (System.IO.IOException)
{
}
}
}
else if (disk is VolumeDisk)
{
bool skippedLock = (Environment.OSVersion.Version.Major >= 6 && VolumeInfo.IsOffline(((VolumeDisk)disk).Volume));
if (!skippedLock)
{
Guid?windowsVolumeGuid = WindowsVolumeHelper.GetWindowsVolumeGuid(((VolumeDisk)disk).Volume);
if (windowsVolumeGuid.HasValue)
{
WindowsVolumeManager.ReleaseLock(windowsVolumeGuid.Value);
}
}
}
#endif
}
