public Response UnmountVolume(VolumeUnmountRequest request)
{
if (!this.VolumeExists(request.Name))
{
return(new Response("volume not found"));
}
this.rwLock.EnterWriteLock();
try
{
if (!knownVolumeMappings.ContainsKey(request.Name))
{
return(new Response("volume not found"));
}
string mountMetadataFilename = Path.Combine(mountMetadataPath, request.Name, request.ID);
bool mountpointNotExist = string.IsNullOrEmpty(this.knownVolumeMappings[request.Name].Mountpoint);
bool mountIDNotExist = !this.knownVolumeMappings[request.Name].MountIDs.Contains(request.ID);
bool mountMetadataFileNotExist = !System.IO.File.Exists(mountMetadataFilename);
if (mountpointNotExist || mountIDNotExist || mountMetadataFileNotExist)
{
TraceWriter.WriteWarningWithId(
TraceType,
this.serviceContext.TraceId,
$"Unmount volume {request.Name}:{request.ID} unexpected state: mountpointNotExist-{mountpointNotExist} mountIDNotExist-{mountIDNotExist}:mountMetadataFileNotExist-{mountMetadataFileNotExist}");
// We are not tracking this volume mount.
return(new Response());
}
System.IO.File.Delete(mountMetadataFilename);
this.knownVolumeMappings[request.Name].MountIDs.Remove(request.ID);
return(new Response());
}
catch (Exception e)
{
TraceWriter.WriteErrorWithId(
TraceType,
this.serviceContext.TraceId,
$"Unmount volume {request.Name} failed with exception {e}.");
return(new Response($"Unmount volume {request.Name}:{request.ID} failed with exception {e}."));
}
finally
{
this.rwLock.ExitWriteLock();
}
}
public Response UnmountVolume(VolumeUnmountRequest request, string traceId)
{
if (!this.VolumeExists(request.Name))
{
string errorMessage = String.Format("Attempt to unmount 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));
}
if (string.IsNullOrEmpty(this.volumeMappings[request.Name].Mountpoint) ||
!this.volumeMappings[request.Name].MountIDs.Contains(request.ID))
{
// We are not tracking this volume mount.
return(new Response());
}
this.volumeMappings[request.Name].MountIDs.Remove(request.ID);
--this.volumeMappings[request.Name].NumberOfMounts;
#if DotNetCoreClrLinux
Interlocked.Decrement(ref BSDockerVolumePlugin.SynchronizedKestrelCommunicationListener.TotalMountedVolumesOnNode);
if (this.volumeMappings[request.Name].NumberOfMounts == 0)
{
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "Attempting umount of " + this.volumeMappings[request.Name].Mountpoint);
var returnValue = umount(this.volumeMappings[request.Name].Mountpoint);
TraceWriter.WriteInfoWithId(Constants.TraceSource, traceId, "Umount returned" + returnValue);
}
#endif
return(new Response());
}
finally
{
this.volumeRWLock.ExitWriteLock();
}
}
