t/zbd: add a CLI option to force io_uring

Many modern Linux distros don't include libaio-dev or libaio-devel
package by default and this leads to libaio ioengine being
unavailable in fio instances built at such systems.

Approximately one third of the test cases in the fio test script for
zoned block devices, t/zbd/test-zbd-support, use libaio ioengine.

In order to allow users to run the entire set of ZBD tests without
libaio, introduce a new command line option, -u, to the test script.
When this option is added to the script command line, all tests that
normally use libaio will be modified to use io_uring ioengine.

Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Link: https://lore.kernel.org/r/20221016014309.53682-2-dmitry.fomichev@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/t/zbd/test-zbd-support b/t/zbd/test-zbd-support
index d4aaa813227a706529435ea4d306b72504206c15..cdc03f281bbdb2c5eb7412cba265f7a8ed55f2a3 100755 (executable)
--- a/t/zbd/test-zbd-support
+++ b/t/zbd/test-zbd-support
@@ -17,6 +17,7 @@ usage() {
        echo -e "\t-t <test #> Run only a single test case with specified number"
        echo -e "\t-q Quit the test run after any failed test"
        echo -e "\t-z Run fio with debug=zbd option"
+       echo -e "\t-u Use io_uring ioengine in place of libaio"
 }
 
 max() {
@@ -38,6 +39,8 @@ min() {
 ioengine() {
        if [ -n "$use_libzbc" ]; then
                echo -n "--ioengine=libzbc"
+       elif [ "$1" = "libaio" -a -n "$force_io_uring" ]; then
+               echo -n "--ioengine=io_uring"
        else
                echo -n "--ioengine=$1"
        fi
@@ -1275,6 +1278,7 @@ use_libzbc=
 zbd_debug=
 max_open_zones_opt=
 quit_on_err=
+force_io_uring=
 
 while [ "${1#-}" != "$1" ]; do
   case "$1" in
@@ -1292,6 +1296,7 @@ while [ "${1#-}" != "$1" ]; do
        shift;;
     -q) quit_on_err=1; shift;;
     -z) zbd_debug=1; shift;;
+    -u) force_io_uring=1; shift;;
     --) shift; break;;
      *) usage; exit 1;;
   esac
@@ -1302,6 +1307,11 @@ if [ $# != 1 ]; then
     exit 1
 fi
 
+if [ -n "$use_libzbc" -a -n "$force_io_uring" ]; then
+    echo "Please specify only one of -l and -u options"
+    exit 1
+fi
+
 # shellcheck source=functions
 source "$(dirname "$0")/functions" || exit $?