--- a/usr/src/uts/common/fs/zfs/zfs_fm.c	Fri Apr 11 16:15:33 2008 -0700
+++ b/usr/src/uts/common/fs/zfs/zfs_fm.c	Fri Apr 11 18:36:28 2008 -0700
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -263,6 +263,9 @@
 		 */
 		if (zio->io_logical != NULL)
 			fm_payload_set(ereport,
+			    FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJSET,
+			    DATA_TYPE_UINT64,
+			    zio->io_logical->io_bookmark.zb_objset,
 			    FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJECT,
 			    DATA_TYPE_UINT64,
 			    zio->io_logical->io_bookmark.zb_object,