[PATCH blktests v2 4/4] nvme/061: add test teardown and setup fabrics target during I/O

[Daniel Wagner <wagi@kernel.org>]

Add a new test case which forcefully removes the target and setup it
again.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
---
 tests/nvme/061     | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/nvme/061.out | 21 +++++++++++++++++
 2 files changed, 87 insertions(+)

diff --git a/tests/nvme/061 b/tests/nvme/061
new file mode 100755
index 0000000000000000000000000000000000000000..3b59d7137932258d06c3d64166db493df176ba4e
--- /dev/null
+++ b/tests/nvme/061
@@ -0,0 +1,66 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2025 Daniel Wagner, SUSE Labs
+#
+# Test if the host keeps running IO when the target is forcefully removed and
+# added back.
+
+. tests/nvme/rc
+
+DESCRIPTION="test fabric target teardown and setup during I/O"
+TIMED=1
+
+requires() {
+	_nvme_requires
+	_have_loop
+	_have_fio
+	_require_nvme_trtype_is_fabrics
+}
+
+set_conditions() {
+	_set_nvme_trtype "$@"
+}
+
+test() {
+	echo "Running ${TEST_NAME}"
+
+	_setup_nvmet
+
+	local ns
+
+	_nvmet_target_setup
+
+	_nvme_connect_subsys --keep-alive-tmo 1 --reconnect-delay 1
+
+	ns=$(_find_nvme_ns "${def_subsys_uuid}")
+
+	_run_fio_rand_io --filename="/dev/${ns}" \
+		--group_reporting \
+		--time_based --runtime=1d &> /dev/null &
+	fio_pid=$!
+	sleep 1
+
+	nvmedev=$(_find_nvme_dev "${def_subsysnqn}")
+	state_file="/sys/class/nvme-fabrics/ctl/${nvmedev}/state"
+	for ((i = 0; i <= 5; i++)); do
+		echo "iteration $i"
+
+		_nvmet_target_cleanup
+
+		_nvmf_wait_for_state "${def_subsysnqn}" "connecting" || return 1
+		echo "state: $(cat ${state_file})"
+
+		_nvmet_target_setup
+
+		_nvmf_wait_for_state "${def_subsysnqn}" "live" || return 1
+		echo "state: $(cat ${state_file})"
+	done
+
+	{ kill "${fio_pid}"; wait; } &> /dev/null
+
+	_nvme_disconnect_subsys
+
+	_nvmet_target_cleanup
+
+	echo "Test complete"
+}
diff --git a/tests/nvme/061.out b/tests/nvme/061.out
new file mode 100644
index 0000000000000000000000000000000000000000..75516abdac005854c2be165005c076ef8891c518
--- /dev/null
+++ b/tests/nvme/061.out
@@ -0,0 +1,21 @@
+Running nvme/061
+iteration 0
+state: connecting
+state: live
+iteration 1
+state: connecting
+state: live
+iteration 2
+state: connecting
+state: live
+iteration 3
+state: connecting
+state: live
+iteration 4
+state: connecting
+state: live
+iteration 5
+state: connecting
+state: live
+disconnected 1 controller(s)
+Test complete

-- 
2.49.0