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From: Martin Matuska <mm@FreeBSD.org>
Date: Tue, 26 Feb 2013 20:41:27 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r247348 -
 head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
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Author: mm
Date: Tue Feb 26 20:41:27 2013
New Revision: 247348
URL: http://svnweb.freebsd.org/changeset/base/247348

Log:
  Be more verbose on ZFS deadman I/O panic
  Patch suggested upstream.
  
  Suggested by:	Olivier Cinquin
  MFC after:	12 days

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c	Tue Feb 26 20:35:54 2013	(r247347)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c	Tue Feb 26 20:41:27 2013	(r247348)
@@ -23,6 +23,7 @@
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
  */
 
 #include <sys/zfs_context.h>
@@ -3205,7 +3206,10 @@ vdev_deadman(vdev_t *vd)
 				    fio->io_timestamp, delta,
 				    vq->vq_io_complete_ts);
 				fm_panic("I/O to pool '%s' appears to be "
-				    "hung.", spa_name(spa));
+				    "hung on vdev guid %llu at '%s'.",
+				    spa_name(spa),
+				    (long long unsigned int) vd->vdev_guid,
+				    vd->vdev_path);
 			}
 		}
 		mutex_exit(&vq->vq_lock);