overlayfs: more helpful output when not supported

based on moby#7619 (comment) Signed-off-by: Vincent Batts <[email protected]>
krivenok · Nov 19, 2014 · 3287ca1 · 3287ca1
1 parent 660eada
commit 3287ca1
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/daemon/graphdriver/overlayfs/overlayfs.go b/daemon/graphdriver/overlayfs/overlayfs.go
@@ -129,6 +129,7 @@ func supportsOverlayfs() error {
 			return nil
 		}
 	}
+	log.Error("'overlayfs' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlayfs support loaded.")
 	return graphdriver.ErrNotSupported
 }