From f149f539e874415c0ec19b43a2c9bf2c56f3aa80 Mon Sep 17 00:00:00 2001
From: Vishal Verma <vishal.l.verma@intel.com>
Date: Wed, 13 Jul 2022 14:37:58 -0600
Subject: [PATCH 187/217] cxl/test: add a test to {read,write,zero}-labels
Add a unit test to test writing, reading, and zeroing LSA aread for
cxl_test based memdevs using ndctl commands, and reading using cxl-cli
commands to exercise that route as much as possible.
Note that writing using cxl-cli requires a bit more enabling to enable,
as the corresponding nvdimm-bridge object will need to be disabled
first.
Link: https://lore.kernel.org/r/20220713203758.519892-1-vishal.l.verma@intel.com
Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
test/cxl-labels.sh | 69 ++++++++++++++++++++++++++++++++++++++++++++++
test/meson.build | 2 ++
2 files changed, 71 insertions(+)
create mode 100644 test/cxl-labels.sh
diff --git a/test/cxl-labels.sh b/test/cxl-labels.sh
new file mode 100644
index 0000000..e782e2d
--- /dev/null
+++ b/test/cxl-labels.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2022 Intel Corporation. All rights reserved.
+
+. $(dirname $0)/common
+
+rc=1
+
+set -ex
+
+trap 'err $LINENO' ERR
+
+check_prereq "jq"
+
+modprobe -r cxl_test
+modprobe cxl_test
+udevadm settle
+
+test_label_ops()
+{
+ nmem="$1"
+ lsa=$(mktemp /tmp/lsa-$nmem.XXXX)
+ lsa_read=$(mktemp /tmp/lsa-read-$nmem.XXXX)
+
+ # determine LSA size
+ "$NDCTL" read-labels -o "$lsa_read" "$nmem"
+ lsa_size=$(stat -c %s "$lsa_read")
+
+ dd "if=/dev/urandom" "of=$lsa" "bs=$lsa_size" "count=1"
+ "$NDCTL" write-labels -i "$lsa" "$nmem"
+ "$NDCTL" read-labels -o "$lsa_read" "$nmem"
+
+ # compare what was written vs read
+ diff "$lsa" "$lsa_read"
+
+ # zero the LSA and test
+ "$NDCTL" zero-labels "$nmem"
+ dd "if=/dev/zero" "of=$lsa" "bs=$lsa_size" "count=1"
+ "$NDCTL" read-labels -o "$lsa_read" "$nmem"
+ diff "$lsa" "$lsa_read"
+
+ # cleanup
+ rm "$lsa" "$lsa_read"
+}
+
+test_label_ops_cxl()
+{
+ mem="$1"
+ lsa_read=$(mktemp /tmp/lsa-read-$mem.XXXX)
+
+ "$CXL" read-labels -o "$lsa_read" "$mem"
+ rm "$lsa_read"
+}
+
+# test reading labels directly through cxl-cli
+readarray -t mems < <("$CXL" list -b cxl_test -Mi | jq -r '.[].memdev')
+
+for mem in ${mems[@]}; do
+ test_label_ops_cxl "$mem"
+done
+
+# find nmem devices corresponding to cxl memdevs
+readarray -t nmems < <("$NDCTL" list -b cxl_test -Di | jq -r '.[].dev')
+
+for nmem in ${nmems[@]}; do
+ test_label_ops "$nmem"
+done
+
+modprobe -r cxl_test
diff --git a/test/meson.build b/test/meson.build
index 3203d9c..b382f46 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -152,6 +152,7 @@ pfn_meta_errors = find_program('pfn-meta-errors.sh')
track_uuid = find_program('track-uuid.sh')
cxl_topo = find_program('cxl-topology.sh')
cxl_sysfs = find_program('cxl-region-sysfs.sh')
+cxl_labels = find_program('cxl-labels.sh')
tests = [
[ 'libndctl', libndctl, 'ndctl' ],
@@ -178,6 +179,7 @@ tests = [
[ 'track-uuid.sh', track_uuid, 'ndctl' ],
[ 'cxl-topology.sh', cxl_topo, 'cxl' ],
[ 'cxl-region-sysfs.sh', cxl_sysfs, 'cxl' ],
+ [ 'cxl-labels.sh', cxl_labels, 'cxl' ],
]
if get_option('destructive').enabled()
--
2.27.0