@@ -311,6 +311,8 @@ func (pd *v2PushDescriptor) Upload(ctx context.Context, progressOutput progress.

 	case distribution.ErrBlobMounted:

 		progress.Updatef(progressOutput, pd.ID(), "Mounted from %s", err.From.Name())

+		err.Descriptor.MediaType = schema2.MediaTypeLayer

+

 		pd.pushState.Lock()

 		pd.pushState.confirmedV2 = true

 		pd.pushState.remoteLayers[diffID] = err.Descriptor

@@ -10,6 +10,7 @@ import (

 	"strings"

 	"time"

+	"github.com/docker/distribution/digest"

 	"github.com/docker/docker/cliconfig"

 	"github.com/docker/docker/pkg/integration/checker"

 	"github.com/go-check/check"

@@ -158,6 +159,9 @@ func (s *DockerRegistrySuite) TestCrossRepositoryLayerPush(c *check.C) {

 	// ensure that none of the layers were mounted from another repository during push

 	c.Assert(strings.Contains(out1, "Mounted from"), check.Equals, false)

+	digest1 := digest.DigestRegexp.FindString(out1)

+	c.Assert(len(digest1), checker.GreaterThan, 0, check.Commentf("no digest found for pushed manifest"))

+

 	destRepoName := fmt.Sprintf("%v/dockercli/crossrepopush", privateRegistryURL)

 	// retag the image to upload the same layers to another repo in the same registry

 	dockerCmd(c, "tag", "busybox", destRepoName)

@@ -167,6 +171,10 @@ func (s *DockerRegistrySuite) TestCrossRepositoryLayerPush(c *check.C) {

 	// ensure that layers were mounted from the first repo during push

 	c.Assert(strings.Contains(out2, "Mounted from dockercli/busybox"), check.Equals, true)

+	digest2 := digest.DigestRegexp.FindString(out2)

+	c.Assert(len(digest2), checker.GreaterThan, 0, check.Commentf("no digest found for pushed manifest"))

+	c.Assert(digest1, check.Equals, digest2)

+

 	// ensure that we can pull and run the cross-repo-pushed repository

 	dockerCmd(c, "rmi", destRepoName)

 	dockerCmd(c, "pull", destRepoName)

@@ -184,6 +192,9 @@ func (s *DockerSchema1RegistrySuite) TestCrossRepositoryLayerPushNotSupported(c

 	// ensure that none of the layers were mounted from another repository during push

 	c.Assert(strings.Contains(out1, "Mounted from"), check.Equals, false)

+	digest1 := digest.DigestRegexp.FindString(out1)

+	c.Assert(len(digest1), checker.GreaterThan, 0, check.Commentf("no digest found for pushed manifest"))

+

 	destRepoName := fmt.Sprintf("%v/dockercli/crossrepopush", privateRegistryURL)

 	// retag the image to upload the same layers to another repo in the same registry

 	dockerCmd(c, "tag", "busybox", destRepoName)

@@ -193,6 +204,10 @@ func (s *DockerSchema1RegistrySuite) TestCrossRepositoryLayerPushNotSupported(c

 	// schema1 registry should not support cross-repo layer mounts, so ensure that this does not happen

 	c.Assert(strings.Contains(out2, "Mounted from dockercli/busybox"), check.Equals, false)

+	digest2 := digest.DigestRegexp.FindString(out2)

+	c.Assert(len(digest2), checker.GreaterThan, 0, check.Commentf("no digest found for pushed manifest"))

+	c.Assert(digest1, check.Equals, digest2)

+

 	// ensure that we can pull and run the second pushed repository

 	dockerCmd(c, "rmi", destRepoName)

 	dockerCmd(c, "pull", destRepoName)