Add a test that repeatedly rescans nvme controllers while doing IO
on an nvme namespace connected to these controllers. The purpose
of the test is to make sure that no I/O errors or data corruption
occurs because of the rescan operations.
Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
tests/nvme/053 | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++
tests/nvme/rc | 18 ++++++++++++++++
2 files changed, 74 insertions(+)
create mode 100755 tests/nvme/053
diff --git a/tests/nvme/053 b/tests/nvme/053
new file mode 100755
index 0000000..41dc8f2
--- /dev/null
+++ b/tests/nvme/053
@@ -0,0 +1,56 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2024 Martin Wilck, SUSE LLC
+
+. tests/nvme/rc
+
+DESCRIPTION="test controller rescan under I/O load"
+TIMED=1
+: "${TIMEOUT:=60}"
+
+rescan_controller() {
+ local finish
+
+ [[ -f "$1/rescan_controller" ]] || {
+ echo "cannot rescan $1"
+ return 1
+ }
+
+ finish=$(($(date +%s) + TIMEOUT))
+ while [[ $(date +%s) -le $finish ]]; do
+ # sleep interval between 0.1 and 5s
+ usleep "$(((RANDOM%50 + 1)*100000))"
+ echo 1 >"$1/rescan_controller"
+ done
+}
+
+test_device() {
+ local -a ctrls
+ local c
+
+ echo "Running ${TEST_NAME}"
+ ctrls=($(_nvme_get_ctrl_list))
+
+ _run_fio_verify_io --filename="$TEST_DEV" --time_based &> "$FULL" &
+
+ for c in "${ctrls[@]}"; do
+ rescan_controller "$c" &
+ done
+
+ while true; do
+ wait -n &>/dev/null
+ st=$?
+ case $st in
+ 127)
+ break
+ ;;
+ 0)
+ ;;
+ *)
+ echo "child process exited with $st!"
+ ;;
+ esac
+ done
+
+ echo "Test complete"
+}
diff --git a/tests/nvme/rc b/tests/nvme/rc
index e7d2ab1..93b0571 100644
--- a/tests/nvme/rc
+++ b/tests/nvme/rc
@@ -192,6 +192,24 @@ _test_dev_nvme_nsid() {
cat "${TEST_DEV_SYSFS}/nsid"
}
+_nvme_get_ctrl_list() {
+ local subsys
+ local c
+
+ subsys=$(readlink "${TEST_DEV_SYSFS}/device/subsystem")
+ case $subsys in
+ */nvme)
+ readlink -f "${TEST_DEV_SYSFS}/device"
+ ;;
+ */nvme-subsystem)
+ for c in "${TEST_DEV_SYSFS}"/device/nvme*; do
+ [[ -L "$c" ]] || continue
+ [[ -f "$c/dev" ]] && readlink -f "$c"
+ done
+ ;;
+ esac
+}
+
_nvme_calc_rand_io_size() {
local img_size_mb
local io_size_kb
--
2.46.0
