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