@@ -439,6 +439,11 @@ func (clnt *client) AddProcess(ctx context.Context, containerID, processFriendly

 	if err != nil {

 		return -1, err

 	}

+

+	defer func() {

+		container.debugGCS()

+	}()

+

 	// Note we always tell HCS to

 	// create stdout as it's required regardless of '-i' or '-t' options, so that

 	// docker can always grab the output through logs. We also tell HCS to always

@@ -50,6 +50,7 @@ func (ctr *container) start(attachStdio StdioCallback) error {

 	logrus.Debugln("libcontainerd: starting container ", ctr.containerID)

 	if err = ctr.hcsContainer.Start(); err != nil {

 		logrus.Errorf("libcontainerd: failed to start container: %s", err)

+		ctr.debugGCS() // Before terminating!

 		if err := ctr.terminate(); err != nil {

 			logrus.Errorf("libcontainerd: failed to cleanup after a failed Start. %s", err)

 		} else {

@@ -58,6 +59,10 @@ func (ctr *container) start(attachStdio StdioCallback) error {

 		return err

 	}

+	defer func() {

+		ctr.debugGCS()

+	}()

+

 	// Note we always tell HCS to

 	// create stdout as it's required regardless of '-i' or '-t' options, so that

 	// docker can always grab the output through logs. We also tell HCS to always

@@ -1,6 +1,10 @@

 package libcontainerd

-import "strings"

+import (

+	"strings"

+

+	opengcs "github.com/Microsoft/opengcs/client"

+)

 // setupEnvironmentVariables converts a string array of environment variables

 // into a map as required by the HCS. Source array is in format [v1=k1] [v2=k2] etc.

@@ -19,3 +23,16 @@ func setupEnvironmentVariables(a []string) map[string]string {

 func (s *LCOWOption) Apply(interface{}) error {

 	return nil

 }

+

+// DebugGCS is a dirty hack for debugging for Linux Utility VMs. It simply

+// runs a bunch of commands inside the UVM, but seriously aides in advanced debugging.

+func (c *container) debugGCS() {

+	if c == nil || c.isWindows || c.hcsContainer == nil {

+		return

+	}

+	cfg := opengcs.Config{

+		Uvm:               c.hcsContainer,

+		UvmTimeoutSeconds: 600,

+	}

+	cfg.DebugGCS()

+}