nvmeprint.cpp: Fix self-test for single namespace devices.

Use broadcast NSID if only one namespace is supported
(#1741, GH issues/217).
smartctl.8.in: Document new behavior.

git-svn-id: https://svn.code.sf.net/p/smartmontools/code/trunk@5603 4ea69e1a-61f1-4043-bf83-b5c94c648137

smartmontools/ChangeLog

 $Id$
 
+2024-03-29  Christian Franke  <franke@computer.org>
+
+	nvmeprint.cpp: Fix self-test for single namespace devices.
+	Use broadcast NSID if only one namespace is supported
+	(#1741, GH issues/217).
+	smartctl.8.in: Document new behavior.
+
 2024-03-28  Christian Franke  <franke@computer.org>
 
 	drivedb.h:

smartmontools/nvmeprint.cpp

@@ -3,7 +3,7 @@
  *
  * Home page of code is: https://www.smartmontools.org
  *
- * Copyright (C) 2016-23 Christian Franke
+ * Copyright (C) 2016-24 Christian Franke
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
@@ -751,7 +751,12 @@ int nvmePrintMain(nvme_device * device, const nvme_print_options & options)
 
   // Check for self-test support
   bool self_test_sup = !!(id_ctrl.oacs & 0x0010);
-  unsigned self_test_nsid = device->get_nsid(); // TODO: Support NSID=0 to test controller
+
+  // Use broadcast NSID for self-tests if only one namespace is supported.
+  // Some single namespace devices return failure if NSID=1 is used to
+  // address self-tests.
+  // TODO: Support NSID=0 to test controller
+  unsigned self_test_nsid = (id_ctrl.nn == 1 ? 0xffffffff : device->get_nsid());
 
   // Read and print Self-test log, check for running test
   int self_test_completion = -1;

smartmontools/smartctl.8.in

 .ig
 Copyright (C) 2002-10 Bruce Allen
-Copyright (C) 2004-23 Christian Franke
+Copyright (C) 2004-24 Christian Franke
 
 SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -1477,6 +1477,13 @@ test terminology).
 .I selftest
 \- [NVMe: NEW EXPERIMENTAL SMARTCTL 7.4 FEATURE]
 prints the NVMe self-test log.
+.br
+[NEW EXPERIMENTAL SMARTCTL 7.5 FEATURE]
+If the device does not support multiple namespaces, the broadcast namespace
+is always used to read the self-test log and to start the tests (see
+\*(Aq\-t TEST\*(Aq below).
+This is because some single namespace devices return failure if namespace 1
+is used to address self-tests.
 .\" %ENDIF OS Darwin FreeBSD Linux NetBSD Windows Cygwin
 .Sp
 .I xselftest[,NUM][,selftest]