[ndctl PATCH 15/17] ndctl, test: trigger notifications

From: Dan Williams <dan.j.williams@intel.com>
To: linux-nvdimm@lists.01.org
Subject: [ndctl PATCH 15/17] ndctl, test: trigger notifications
Date: Fri, 01 Dec 2017 15:25:49 -0800	[thread overview]
Message-ID: <151217074949.28402.12570925189107616348.stgit@dwillia2-desk3.amr.corp.intel.com> (raw)
In-Reply-To: <151217066885.28402.7962437173336388439.stgit@dwillia2-desk3.amr.corp.intel.com>

Provide a standalone test that can be run against any nvdimm bus to try
to trigger SMART notifications.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 test/Makefile.am    |    4 +
 test/smart-notify.c |  220 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 224 insertions(+)
 create mode 100644 test/smart-notify.c

diff --git a/test/Makefile.am b/test/Makefile.am
index 6698d6cfbab5..85736c3cce09 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -25,6 +25,7 @@ check_PROGRAMS =\
 	parent-uuid \
 	multi-pmem \
 	dax-errors \
+	smart-notify \
 	daxdev-errors
 
 if ENABLE_DESTRUCTIVE
@@ -100,6 +101,9 @@ device_dax_LDADD = \
 		$(JSON_LIBS) \
 		../libutil.a
 
+smart_notify_SOURCES = smart-notify.c
+smart_notify_LDADD = $(LIBNDCTL_LIB)
+
 multi_pmem_SOURCES = \
 		multi-pmem.c \
 		$(testcore) \
diff --git a/test/smart-notify.c b/test/smart-notify.c
new file mode 100644
index 000000000000..24e9a213836b
--- /dev/null
+++ b/test/smart-notify.c
@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2017 Intel Corporation. All rights reserved. */
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <stdlib.h>
+#include <ndctl/libndctl.h>
+
+static void do_notify(struct ndctl_dimm *dimm)
+{
+	struct ndctl_cmd *s_cmd = ndctl_dimm_cmd_new_smart(dimm);
+	struct ndctl_cmd *st_cmd = NULL, *sst_cmd = NULL;
+	unsigned int orig_mtemp, orig_ctemp, orig_spare;
+	const char *name = ndctl_dimm_get_devname(dimm);
+	unsigned int alarm, mtemp, ctemp, spare, valid;
+	int rc, i;
+
+	if (!s_cmd) {
+		fprintf(stderr, "%s: no smart command support\n", name);
+		goto out;
+	}
+
+	rc = ndctl_cmd_submit(s_cmd);
+	if (rc) {
+		fprintf(stderr, "%s: smart command failed: %d %s\n", name,
+				rc, strerror(errno));
+		goto out;
+	}
+
+	valid = ndctl_cmd_smart_get_flags(s_cmd);
+	alarm = ndctl_cmd_smart_get_alarm_flags(s_cmd);
+	mtemp = ndctl_cmd_smart_get_media_temperature(s_cmd);
+	ctemp = ndctl_cmd_smart_get_ctrl_temperature(s_cmd);
+	spare = ndctl_cmd_smart_get_spares(s_cmd);
+	fprintf(stderr, "%s: (smart) alarm%s: %#x mtemp%s: %.2f ctemp%s: %.2f spares%s: %d\n",
+			name,
+			valid & ND_SMART_ALARM_VALID ? "" : "(invalid)", alarm,
+			valid & ND_SMART_MTEMP_VALID ? "" : "(invalid)",
+			ndctl_decode_smart_temperature(mtemp),
+			valid & ND_SMART_CTEMP_VALID ? "" : "(invalid)",
+			ndctl_decode_smart_temperature(ctemp),
+			valid & ND_SMART_SPARES_VALID ? "" : "(invalid)", spare);
+
+	st_cmd = ndctl_dimm_cmd_new_smart_threshold(dimm);
+	if (!st_cmd) {
+		fprintf(stderr, "%s: no smart threshold command support\n", name);
+		goto out;
+	}
+
+	rc = ndctl_cmd_submit(st_cmd);
+	if (rc) {
+		fprintf(stderr, "%s: smart threshold command failed: %d %s\n",
+				name, rc, strerror(errno));
+		goto out;
+	}
+
+	alarm = ndctl_cmd_smart_threshold_get_alarm_control(st_cmd);
+	mtemp = ndctl_cmd_smart_threshold_get_media_temperature(st_cmd);
+	ctemp = ndctl_cmd_smart_threshold_get_ctrl_temperature(st_cmd);
+	spare = ndctl_cmd_smart_threshold_get_spares(st_cmd);
+	fprintf(stderr, "%s: (smart thresh) alarm: %#x mtemp: %.2f ctemp: %.2f spares: %d\n",
+			name, alarm, ndctl_decode_smart_temperature(mtemp),
+			ndctl_decode_smart_temperature(ctemp), spare);
+
+	orig_mtemp = mtemp;
+	orig_ctemp = ctemp;
+	orig_spare = spare;
+
+	sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
+	if (!sst_cmd) {
+		fprintf(stderr, "%s: no smart set threshold command support\n", name);
+		goto out;
+	}
+
+	alarm = ndctl_cmd_smart_threshold_get_supported_alarms(sst_cmd);
+	if (!alarm) {
+		fprintf(stderr, "%s: no smart set threshold command support\n", name);
+		goto out;
+	}
+
+
+	fprintf(stderr, "%s: supported alarms: %#x\n", name, alarm);
+
+	/*
+	 * free the cmd now since we only needed the alarms and will
+	 * create + issue a set_threshold test for each alarm
+	 */
+	ndctl_cmd_unref(sst_cmd);
+
+	for (i = 0; i < 3; i++) {
+		unsigned int set_alarm = 1 << i;
+
+		if (!(alarm & set_alarm))
+			continue;
+
+		sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
+		if (!sst_cmd) {
+			fprintf(stderr, "%s: alloc failed: smart set threshold\n",
+					name);
+			goto out;
+		}
+
+		switch (set_alarm) {
+		case ND_SMART_SPARE_TRIP:
+			fprintf(stderr, "%s: set spare threshold: 99\n", name);
+			ndctl_cmd_smart_threshold_set_spares(sst_cmd, 99);
+			ndctl_cmd_smart_threshold_set_media_temperature(
+					sst_cmd, orig_mtemp);
+			ndctl_cmd_smart_threshold_set_ctrl_temperature(
+					sst_cmd, orig_ctemp);
+			break;
+		case ND_SMART_MTEMP_TRIP:
+			mtemp = ndctl_cmd_smart_get_media_temperature(s_cmd);
+			if (mtemp & (1 << 15))
+				mtemp *= 2;
+			else
+				mtemp /= 2;
+			fprintf(stderr, "%s: set mtemp threshold: %.2f\n", name,
+					ndctl_decode_smart_temperature(mtemp));
+			ndctl_cmd_smart_threshold_set_spares(
+					sst_cmd, orig_spare);
+			ndctl_cmd_smart_threshold_set_media_temperature(
+					sst_cmd, mtemp);
+			ndctl_cmd_smart_threshold_set_ctrl_temperature(
+					sst_cmd, orig_ctemp);
+			break;
+		case ND_SMART_CTEMP_TRIP:
+			ctemp = ndctl_cmd_smart_get_ctrl_temperature(s_cmd);
+			if (ctemp & (1 << 15))
+				ctemp *= 2;
+			else
+				ctemp /= 2;
+			fprintf(stderr, "%s: set ctemp threshold: %.2f\n", name,
+					ndctl_decode_smart_temperature(ctemp));
+
+			ndctl_cmd_smart_threshold_set_spares(
+					sst_cmd, orig_spare);
+			ndctl_cmd_smart_threshold_set_media_temperature(
+					sst_cmd, orig_mtemp);
+			ndctl_cmd_smart_threshold_set_ctrl_temperature(
+					sst_cmd, ctemp);
+
+			break;
+		default:
+			break;
+		}
+
+		ndctl_cmd_smart_threshold_set_alarm_control(sst_cmd, set_alarm);
+		rc = ndctl_cmd_submit(sst_cmd);
+		if (rc) {
+			fprintf(stderr, "%s: smart set threshold command failed: %d %s\n",
+					name, rc, strerror(errno));
+			goto out;
+		}
+
+		ndctl_cmd_unref(sst_cmd);
+	}
+
+	fprintf(stderr, "%s: set thresholds back to defaults\n", name);
+	sst_cmd = ndctl_dimm_cmd_new_smart_set_threshold(st_cmd);
+	if (!sst_cmd) {
+		fprintf(stderr, "%s: alloc failed: smart set threshold\n",
+				name);
+		goto out;
+	}
+
+	rc = ndctl_cmd_submit(sst_cmd);
+	if (rc) {
+		fprintf(stderr, "%s: smart set threshold defaults failed: %d %s\n",
+				name, rc, strerror(errno));
+		goto out;
+	}
+
+out:
+	ndctl_cmd_unref(sst_cmd);
+	ndctl_cmd_unref(st_cmd);
+	ndctl_cmd_unref(s_cmd);
+}
+
+static void test_dimm_notify(struct ndctl_bus *bus)
+{
+	struct ndctl_dimm *dimm;
+
+	ndctl_dimm_foreach(bus, dimm)
+		do_notify(dimm);
+}
+
+int main(int argc, char *argv[])
+{
+	struct ndctl_ctx *ctx;
+	struct ndctl_bus *bus;
+	int rc = EXIT_FAILURE;
+	const char *provider;
+
+	rc = ndctl_new(&ctx);
+	if (rc < 0)
+		return EXIT_FAILURE;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: smart-notify <nvdimm-bus-provider>\n");
+		goto out;
+	}
+
+	ndctl_set_log_priority(ctx, LOG_DEBUG);
+
+	provider = argv[1];
+	bus = ndctl_bus_get_by_provider(ctx, provider);
+	if (!bus) {
+		fprintf(stderr, "smart-notify: unable to find bus (%s)\n",
+				provider);
+		goto out;
+	}
+
+	rc = EXIT_SUCCESS;
+	test_dimm_notify(bus);
+out:
+	ndctl_unref(ctx);
+	return rc;
+}

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