ZTS: Enable io_uring support on el9/el10

The io_uring interface is available as a Technology Preview.
Details: https://access.redhat.com/solutions/4723221

Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Tino Reichardt <[email protected]>
Closes openzfs#17397

Author: mcmilk

.github/workflows/scripts/qemu-6-tests.sh

@@ -93,6 +93,13 @@ case "$1" in
     ;;
 esac
 
+# enable io_uring on el9/el10
+case "$1" in
+  almalinux9|almalinux10)
+    sudo sysctl kernel.io_uring_disabled=0 > /dev/null
+    ;;
+esac
+
 # run functional testings and save exitcode
 cd /var/tmp
 TAGS=$2/$3

tests/zfs-tests/tests/functional/direct/dio_async_fio_ioengines.ksh

@@ -65,26 +65,11 @@ fio_async_ioengines="posixaio"
 if is_linux; then
 	fio_async_ioengines+=" libaio"
 	if $(grep -q "CONFIG_IO_URING=y" /boot/config-$(uname -r)); then
-		if [ -e /etc/os-release ] ; then
-			source /etc/os-release
-			if [ $PLATFORM_ID = "platform:el9" ] ; then
-				log_note "io_uring disabled on RHEL 9 " \
-				"variants: fails with " \
-				"'Operation not permitted'"
-			elif $(check_fio_ioengine -eq 0); then
-				fio_async_ioengines+=" io_uring"
-			else
-				log_note "io_uring not supported by fio and " \
-				    "will not be tested"
-			fi
-		else 
-			if $(check_fio_ioengine); then
-				fio_async_ioengines+=" io_uring"
-	
-			else
-				log_note "io_uring not supported by fio and " \
-				   "will not be tested"
-			fi
+		if $(check_fio_ioengine); then
+			fio_async_ioengines+=" io_uring"
+		else
+			log_note "io_uring not supported by fio and " \
+			   "will not be tested"
 		fi
 	else
 		log_note "io_uring not supported by kernel will not " \

tests/zfs-tests/tests/functional/io/io_uring.ksh

@@ -45,13 +45,6 @@ if ! $(grep -q "CONFIG_IO_URING=y" /boot/config-$(uname -r)); then
 	log_unsupported "Requires io_uring support within Kernel"
 fi
 
-if [ -e /etc/os-release ] ; then
-	source /etc/os-release
-	if [ $PLATFORM_ID = "platform:el9" ]; then
-		log_unsupported "Disabled on RHEL 9 variants: fails with 'Operation not permitted'"
-	fi
-fi
-
 fio --ioengine=io_uring --parse-only || log_unsupported "fio io_uring support required"
 
 function cleanup