[ndctl,6/6] test: add multi-dax test

Commit Message

Dan Williams July 19, 2017, 6:33 p.m. UTC

Add a simple sanity check for multiple dax instances per
libnvdimm-region support. This is known to fail with a sysfs duplicate
filename warning on kernels prior to 4.13-final.

Signed-off-by: Dan Williams <[e-mail]>
---
 test/Makefile.am  |    1 +
 test/multi-dax.sh |   61 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100755 test/multi-dax.sh

Patch

diff --git a/test/Makefile.am b/test/Makefile.am
index 9353a34326c1..ac3547e22ccb 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -10,6 +10,7 @@  TESTS =\
 	clear.sh \
 	dax-errors.sh \
 	daxdev-errors.sh \
+	multi-dax.sh \
 	btt-check.sh \
 	label-compat.sh \
 	blk-exhaust.sh
diff --git a/test/multi-dax.sh b/test/multi-dax.sh
new file mode 100755
index 000000000000..751f16f5b07b
--- /dev/null
+++ b/test/multi-dax.sh
@@ -0,0 +1,61 @@ 
+#!/bin/bash -x
+
+# Copyright(c) 2015-2017 Intel Corporation. All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of version 2 of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+
+DEV=""
+NDCTL="../ndctl/ndctl"
+DAXCTL="../daxctl/daxctl"
+BUS="-b nfit_test.0"
+BUS1="-b nfit_test.1"
+json2var="s/[{}\",]//g; s/:/=/g"
+rc=77
+
+err() {
+	rc=1
+	echo "test/multi-dax: failed at line $1"
+	exit $rc
+}
+
+check_min_kver()
+{
+	local ver="$1"
+	: "${KVER:=$(uname -r)}"
+
+	[ -n "$ver" ] || return 1
+	[[ "$ver" == "$(echo -e "$ver\n$KVER" | sort -V | head -1)" ]]
+}
+
+check_min_kver "4.13" || { echo "kernel $KVER may lack multi-dax support"; exit $rc; }
+
+set -e
+trap 'err $LINENO' ERR
+
+# setup (reset nfit_test dimms)
+modprobe nfit_test
+$NDCTL disable-region $BUS all
+$NDCTL zero-labels $BUS all
+$NDCTL enable-region $BUS all
+
+query=". | sort_by(.available_size) | reverse | .[0].dev"
+region=$($NDCTL list $BUS -t pmem -Ri | jq -r "$query")
+
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s 16M)
+chardev1=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+json=$($NDCTL create-namespace $BUS -r $region -t pmem -m dax -a 4096 -s 16M)
+chardev2=$(echo $json | jq ". | select(.mode == \"dax\") | .daxregion.devices[0].chardev")
+
+# cleanup
+$NDCTL disable-region $BUS all
+$NDCTL disable-region $BUS1 all
+modprobe -r nfit_test
+
+exit 0