--- omv/Filesystem.js.org	2014-09-18 10:52:09.777037347 +0200
+++ omv/Filesystem.js	2014-09-18 21:18:41.363038848 +0200
@@ -642,6 +642,14 @@
 				tbarBtnDisabled["quota"] = true;
 			}
 		}
+		//Disable all buttons for zfs filesystems. These actions should be
+		//handled by 3rd party plugin.
+		if([ "zfs_member" ].indexOf(
+			records[0].get("type")) == 0) {
+				tbarBtnDisabled["mount"] = true;
+				tbarBtnDisabled["unmount"] = true;
+				tbarBtnDisabled["delete"] = true;
+		}
 		// Update the button controls.
 		Ext.Object.each(tbarBtnDisabled, function(key, value) {
 			this.setToolbarButtonDisabled(key, value);