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);
}
private void btnOK_Click(object sender, EventArgs e)
{
PhysicalDisk selectedDisk;
if (listPhysicalDisks.SelectedItems.Count > 0)
{
selectedDisk = (PhysicalDisk)listPhysicalDisks.SelectedItems[0].Tag;
}
else
{
MessageBox.Show("No disk was selected", "Error");
return;
}
if (!chkReadOnly.Checked)
{
if (Environment.OSVersion.Version.Major >= 6)
{
bool isDiskReadOnly;
bool isOnline = selectedDisk.GetOnlineStatus(out isDiskReadOnly);
if (isDiskReadOnly)
{
MessageBox.Show("The selected disk is set to readonly", "Error");
return;
}
if (isOnline)
{
DialogResult result = MessageBox.Show("The selected disk will now be taken offline. OK?", String.Empty, MessageBoxButtons.OKCancel);
if (result == DialogResult.OK)
{
bool success = selectedDisk.SetOnlineStatus(false);
if (!success)
{
MessageBox.Show("Was not able to take the disk offline", "Error");
return;
}
}
else
{
return;
}
}
}
else
{
if (DynamicDisk.IsDynamicDisk(selectedDisk))
{
// The user will probably want to stop the Logical Disk Manager services (vds, dmadmin, dmserver)
// and lock all dynamic disks and dynamic volumes before whatever he's doing.
// Modifications the the LDM database should be applied to all dynamic disks.
DialogResult result = MessageBox.Show("The dynamic disk database will likely be corrupted, Continue?", "Warning", MessageBoxButtons.YesNo);
if (result != DialogResult.Yes)
{
return;
}
}
else
{
// Locking a disk does not prevent Windows from accessing mounted volumes on it. (it does prevent creation of new volumes).
// For basic disks we need to lock the Disk and Volumes, and we should also call UpdateDiskProperties() after releasing the lock.
LockStatus status = LockHelper.LockBasicDiskAndVolumesOrNone(selectedDisk);
if (status == LockStatus.CannotLockDisk)
{
MessageBox.Show("Unable to lock the disk", "Error");
return;
}
else if (status == LockStatus.CannotLockVolume)
{
MessageBox.Show("Unable to lock one of the volumes on the disk", "Error");
return;
}
}
}
}
if (chkReadOnly.Checked)
{
selectedDisk = new PhysicalDisk(selectedDisk.PhysicalDiskIndex, true);
}
m_selectedDisk = selectedDisk;
this.DialogResult = DialogResult.OK;
this.Close();
}
