[PATCH] nvme: add nvmf reset/disconnect during traffic test

[Sagi Grimberg]

Test traffic controller reset and disconnect during traffic.

Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
---
 tests/nvme/040     | 55 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/nvme/040.out |  6 +++++
 tests/nvme/rc      |  8 +++++++
 3 files changed, 69 insertions(+)
 create mode 100755 tests/nvme/040
 create mode 100644 tests/nvme/040.out

diff --git a/tests/nvme/040 b/tests/nvme/040
new file mode 100755
index 000000000000..88d255a8d0e0
--- /dev/null
+++ b/tests/nvme/040
@@ -0,0 +1,55 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2019 Yi Zhang <yi.zhang at redhat.com>
+#
+# Test nvme fabrics controller reset/disconnect/reconnect operation during I/O
+# This test is somewhat similar to test 032 but for fabrics controllers.
+
+. tests/nvme/rc
+
+DESCRIPTION="test nvme fabrics controller reset/disconnect operation during I/O"
+
+requires() {
+	_nvme_requires
+	_have_loop
+	_have_fio
+	_require_nvme_trtype_is_fabrics
+}
+
+test() {
+	local subsys="blktests-subsystem-"
+	local port
+	local loop_dev
+	local nvmedev
+
+	echo "Running ${TEST_NAME}"
+
+	_setup_nvmet
+	truncate -s 1G "$TMPDIR/img"
+	loop_dev="$(losetup -f --show "$TMPDIR/img")"
+
+	port="$(_create_nvmet_port "${nvme_trtype}")"
+	_create_nvmet_subsystem "${subsys}" "${loop_dev}"
+	_add_nvmet_subsys_to_port "${port}" "${subsys}"
+	_nvme_connect_subsys "${nvme_trtype}" "${subsys}"
+	udevadm settle
+	nvmedev=$(_find_nvme_dev "${subsys}")
+
+	# start fio job
+	echo "starting background fio on ${nvmedev}n1"
+	_run_fio_rand_io --filename="${nvmedev}n1" --size=1g \
+		--group_reporting --ramp_time=5  &> /dev/null &
+	sleep 5
+
+	# do reset/remove operation
+	echo "resetting ${nvmedev}"
+	_nvme_reset_ctrl ${nvmedev}
+	sleep 1
+	echo "deleting ${nvmedev}"
+	_nvme_delete_ctrl ${nvmedev}
+
+	echo "stopping background fio on ${nvmedev}n1"
+	{ kill $!; wait; } &> /dev/null
+
+	echo "Test complete"
+}
diff --git a/tests/nvme/040.out b/tests/nvme/040.out
new file mode 100644
index 000000000000..f14ae8db1ddb
--- /dev/null
+++ b/tests/nvme/040.out
@@ -0,0 +1,6 @@
+Running nvme/040
+starting background fio on nvme0n1
+resetting nvme0
+deleting nvme0
+stopping background fio on nvme0n1
+Test complete
diff --git a/tests/nvme/rc b/tests/nvme/rc
index 4bebbc762cbb..684d56b184e5 100644
--- a/tests/nvme/rc
+++ b/tests/nvme/rc
@@ -447,3 +447,11 @@ _nvme_disable_err_inject()
         echo 0 > /sys/kernel/debug/"$1"/fault_inject/probability
         echo 0 > /sys/kernel/debug/"$1"/fault_inject/times
 }
+
+_nvme_reset_ctrl() {
+	echo 1 > /sys/class/nvme/$1/reset_controller
+}
+
+_nvme_delete_ctrl() {
+	echo 1 > /sys/class/nvme/$1/delete_controller
+}
-- 
2.34.1