bool ProvisionLUDirect(VolumeEntry volumeEntry, string traceId, string size, string sizeType, uint servicePort)
{
bool fProvisionedLU = false;
// Connect to the driver
uint lastError = 0;
IntPtr hDriver = ConnectToDevice(ref lastError);
if (hDriver != INVALID_HANDLE_VALUE)
{
try
{
fProvisionedLU = ProvisionLUN(hDriver, volumeEntry.LUID, size, sizeType, volumeEntry.FileSystem, volumeEntry.Mountpoint, servicePort);
}
finally
{
// Close the handle to the driver
if (!CloseHandle(hDriver))
{
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, "Unable to close handle to the driver.");
}
}
}
else
{
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, String.Format("Unable to provision volume due to error: {0:X}", lastError));
}
return(fProvisionedLU);
}
// All the field should be set at createVolume step, if so return true
void ValidateProvisionLUArgs(VolumeEntry volumeEntry, ref string size, ref string sizeType, ref int servicePort)
{
if (string.IsNullOrEmpty(volumeEntry.ServicePartitionID))
{
throw new ArgumentNullException("ServicePartitionID is NullOrEmpty.");
}
if (ServiceExists(volumeEntry.ServicePartitionID) == false)
{
throw new InvalidOperationException("No service instance exists to mount the volume.");
}
if (string.IsNullOrEmpty(volumeEntry.LUID) ||
string.IsNullOrEmpty(volumeEntry.SizeDisk) ||
string.IsNullOrEmpty(volumeEntry.FileSystem))
{
throw new ArgumentNullException("Disk information(LUID, SizeDisk, FileSystem) is NullOrEmpty.");
}
if (string.IsNullOrEmpty(volumeEntry.Mountpoint))
{
throw new ArgumentNullException("Mountpoint is NullOrEmpty.");
}
int iPort = GetServicePort(volumeEntry.ServicePartitionID);
if (iPort <= 0)
{
throw new ArgumentException("Invalid ServicePort specified: " + iPort);
}
else
{
servicePort = iPort;
}
if (!ParseSizeDisk(volumeEntry.SizeDisk, ref size, ref sizeType))
{
throw new ArgumentException("Invalid disk size specified: {0}", volumeEntry.SizeDisk);
}
}
bool ProvisionLU(string name, VolumeEntry volumeEntry, string traceId)
{
bool provisionSuccessful = false;
// Connect the socket to the remote endpoint. Catch any errors.
try
{
string size = "";
string sizeType = "";
int servicePort = 0;
this.ValidateProvisionLUArgs(volumeEntry, ref size, ref sizeType, ref servicePort);
provisionSuccessful = ProvisionLUDirect(volumeEntry, traceId, size, sizeType, (uint)servicePort);
}
catch (Exception ex)
{
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, String.Format("Unable to provision volume due to exception: {0}", ex.Message));
provisionSuccessful = false;
}
return(provisionSuccessful);
}
//
// Initialize information about any services and volume mounts.
//
private void Initialize()
{
string traceId = GetTraceId("VolumeMap.Initialize");
string servicesMetadataPath = Path.Combine(this.serviceContext.CodePackageActivationContext.WorkDirectory, servicesMetadata);
Utilities.EnsureFolder(servicesMetadataPath);
string servicesMetadataFile = Path.Combine(servicesMetadataPath, servicesMetadataFilenameWithExt);
if (File.Exists(servicesMetadataFile))
{
this.serviceRWLock.EnterWriteLock();
try
{
XElement xElementMap = XElement.Load(servicesMetadataFile);
foreach (XElement el in xElementMap.Elements())
{
serviceMappings.SetElementValue(el.Name.LocalName, el.Value);
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, String.Format("Read serviceMapping for servicePartitionId {0} and Port {1}", el.Name.LocalName, el.Value));
}
}
finally
{
this.serviceRWLock.ExitWriteLock();
}
}
else
{
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "No pre-existing Service metadata mappings found.");
}
string volumesPath = Path.Combine(this.serviceContext.CodePackageActivationContext.WorkDirectory, volumesMetadata);
Utilities.EnsureFolder(volumesPath);
var volumes = Directory.GetFiles(volumesPath);
if (volumes == null || volumes.Length == 0)
{
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "No pre-existing Volume metadata mappings found.");
}
foreach (var metadataFile in volumes)
{
VolumeCreateRequest volume;
string mountPoint;
if (ReadMetadataFile(metadataFile, out volume, out mountPoint))
{
this.volumeMappings[volume.Name] = new VolumeEntry()
{
VolumeOptions = volume.Opts,
ServicePartitionID = volume.Opts[Constants.ServicePartitionID],
LUID = volume.Opts[Constants.LUID],
SizeDisk = volume.Opts[Constants.SizeDisk],
#if DotNetCoreClrLinux
FileSystem = "EXT4",
#else
FileSystem = volume.Opts[Constants.FileSystem],
#endif
Mountpoint = mountPoint
};
VolumeEntry volumeEntry = this.volumeMappings[volume.Name];
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId,
String.Format("Read volumeMapping for Volume:{0}, servicePartitionId:{1}, LUID:{2}, sizeDisk:{3}, fileSystem:{4}, mountPoint:{5}", volume.Name, volumeEntry.ServicePartitionID, volumeEntry.LUID, volumeEntry.SizeDisk, volumeEntry.FileSystem, volumeEntry.Mountpoint));
}
}
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "Volume map initialized.");
}
public Response MountVolume(VolumeMountRequest request, string traceId)
{
if (!this.VolumeExists(request.Name))
{
string errorMessage = String.Format("Attempt to mount volume {0} that does not exist.", request.Name);
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, errorMessage);
return(new Response(errorMessage));
}
this.volumeRWLock.EnterWriteLock();
try
{
if (!volumeMappings.ContainsKey(request.Name))
{
string errorMessage = String.Format("Mapping for volume {0} was not found.", request.Name);
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, errorMessage);
return(new Response(errorMessage));
}
VolumeEntry volumeEntry = this.volumeMappings[request.Name];
string volumeDetails = String.Format("Volume:{0}, servicePartitionId:{1}, LUID:{2}, sizeDisk:{3}, fileSystem:{4}", request.Name, volumeEntry.ServicePartitionID, volumeEntry.LUID, volumeEntry.SizeDisk, volumeEntry.FileSystem);
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, String.Format("Processing mount request: {0}", volumeDetails));
bool fVolumeProvisioned = false;
if (!System.IO.Directory.Exists(volumeEntry.Mountpoint))
{
// The folder created here is which volume will be mounted
System.IO.Directory.CreateDirectory(volumeEntry.Mountpoint);
// Give built-in users access to the folder
if (SetMountpointRWAccessForUsers(volumeEntry.Mountpoint, traceId))
{
// Provision the volume
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, String.Format("Provisioning volume: {0}", volumeDetails));
fVolumeProvisioned = this.ProvisionLU(request.Name, volumeEntry, traceId);
}
// If volume provisioning fails, delete the mountpoint folder
if (!fVolumeProvisioned)
{
System.IO.Directory.Delete(volumeEntry.Mountpoint);
}
}
else
{
#if DotNetCoreClrLinux
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "Attempting Umount before provisioning volume.");
var returnValue = umount(volumeEntry.Mountpoint);
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "Umount returned " + returnValue);
#endif
// Connect to BlockStore Native Service and send ProvisionLU cmd
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, String.Format("Provisioning existing mountpoint for volume: {0}", volumeDetails));
fVolumeProvisioned = this.ProvisionLU(request.Name, volumeEntry, traceId);
}
if (!fVolumeProvisioned)
{
string errorMessage = String.Format("Unable to provision volume: {0}", volumeDetails);
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, errorMessage);
return(new Response(errorMessage));
}
else
{
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, String.Format("Successfully provisioned volume: {0}", volumeDetails));
}
volumeEntry.MountIDs.Add(request.ID);
++volumeEntry.NumberOfMounts;
#if DotNetCoreClrLinux
Interlocked.Increment(ref BSDockerVolumePlugin.SynchronizedKestrelCommunicationListener.TotalMountedVolumesOnNode);
#endif
return(new VolumeMountResponse(volumeEntry.Mountpoint));
}
catch (Exception ex)
{
string errorMesg = String.Format("Unable to mount volume {0} due to exception: {1}", request.Name, ex.Message);
TraceWriter.WriteErrorWithId(Constants.TraceSource, traceId, errorMesg);
return(new Response(errorMesg));
}
finally
{
this.volumeRWLock.ExitWriteLock();
}
}