The target is allowed to change the number of I/O queues. Test if the
host is able to reconnect in this scenario.
Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
---
tests/nvme/048 | 125 +++++++++++++++++++++++++++++++++++++++++++++
tests/nvme/048.out | 3 ++
2 files changed, 128 insertions(+)
create mode 100755 tests/nvme/048
create mode 100644 tests/nvme/048.out
diff --git a/tests/nvme/048 b/tests/nvme/048
new file mode 100755
index 000000000000..926f9f3de955
--- /dev/null
+++ b/tests/nvme/048
@@ -0,0 +1,125 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2023 Daniel Wagner, SUSE Labs
+#
+# Test queue count changes on reconnect
+
+. tests/nvme/rc
+
+DESCRIPTION="Test queue count changes on reconnect"
+
+requires() {
+ _nvme_requires
+ _have_loop
+ _require_nvme_trtype tcp rdma fc
+ _require_min_cpus 2
+}
+
+nvmf_wait_for_state() {
+ local def_state_timeout=5
+ local subsys_name="$1"
+ local state="$2"
+ local timeout="${3:-$def_state_timeout}"
+ local nvmedev
+ local state_file
+ local start_time
+ local end_time
+
+ nvmedev=$(_find_nvme_dev "${subsys_name}")
+ state_file="/sys/class/nvme-fabrics/ctl/${nvmedev}/state"
+
+ start_time=$(date +%s)
+ while ! grep -q "${state}" "${state_file}"; do
+ sleep 1
+ end_time=$(date +%s)
+ if (( end_time - start_time > timeout )); then
+ echo "expected state \"${state}\" not " \
+ "reached within ${timeout} seconds"
+ return 1
+ fi
+ done
+
+ return 0
+}
+
+set_nvmet_attr_qid_max() {
+ local nvmet_subsystem="$1"
+ local qid_max="$2"
+ local cfs_path="${NVMET_CFS}/subsystems/${nvmet_subsystem}"
+
+ echo "${qid_max}" > "${cfs_path}/attr_qid_max"
+}
+
+set_qid_max() {
+ local port="$1"
+ local subsys_name="$2"
+ local qid_max="$3"
+
+ set_nvmet_attr_qid_max "${subsys_name}" "${qid_max}"
+
+ # Setting qid_max forces a disconnect and the reconntect attempt starts
+ nvmf_wait_for_state "${subsys_name}" "connecting" || return 1
+ nvmf_wait_for_state "${subsys_name}" "live" || return 1
+
+ return 0
+}
+
+test() {
+ local subsys_name="blktests-subsystem-1"
+ local cfs_path="${NVMET_CFS}/subsystems/${subsys_name}"
+ local file_path="${TMPDIR}/img"
+ local skipped=false
+ local hostnqn
+ local hostid
+ local port
+
+ echo "Running ${TEST_NAME}"
+
+ hostid="$(uuidgen)"
+ if [ -z "$hostid" ] ; then
+ echo "uuidgen failed"
+ return 1
+ fi
+ hostnqn="nqn.2014-08.org.nvmexpress:uuid:${hostid}"
+
+ truncate -s 512M "${file_path}"
+
+ _create_nvmet_subsystem "${subsys_name}" "${file_path}" \
+ "b92842df-a394-44b1-84a4-92ae7d112861"
+ port="$(_create_nvmet_port "${nvme_trtype}")"
+ _add_nvmet_subsys_to_port "${port}" "${subsys_name}"
+ _create_nvmet_host "${subsys_name}" "${hostnqn}"
+
+ if [[ -f "${cfs_path}/attr_qid_max" ]] ; then
+ _nvme_connect_subsys "${nvme_trtype}" "${subsys_name}" \
+ --hostnqn "${hostnqn}" \
+ --hostid "${hostid}" \
+ --keep-alive-tmo 1 \
+ --reconnect-delay 2
+
+ if ! nvmf_wait_for_state "${subsys_name}" "live" ; then
+ echo FAIL
+ else
+ set_qid_max "${port}" "${subsys_name}" 1 || echo FAIL
+ set_qid_max "${port}" "${subsys_name}" 128 || echo FAIL
+ fi
+
+ _nvme_disconnect_subsys "${subsys_name}"
+ else
+ SKIP_REASONS+=("missing attr_qid_max feature")
+ skipped=true
+ fi
+
+ _remove_nvmet_subsystem_from_port "${port}" "${subsys_name}"
+ _remove_nvmet_subsystem "${subsys_name}"
+ _remove_nvmet_port "${port}"
+ _remove_nvmet_host "${hostnqn}"
+
+ rm "${file_path}"
+
+ if [[ "${skipped}" = true ]] ; then
+ return 1
+ fi
+
+ echo "Test complete"
+}
diff --git a/tests/nvme/048.out b/tests/nvme/048.out
new file mode 100644
index 000000000000..7f986ef9637d
--- /dev/null
+++ b/tests/nvme/048.out
@@ -0,0 +1,3 @@
+Running nvme/048
+NQN:blktests-subsystem-1 disconnected 1 controller(s)
+Test complete
--
2.40.0
