autotest: Adding qos test case under the spdk/test/iscsi_tgt directory.

run_test ./test/iscsi_tgt/rpc_config/rpc_config.sh

run_test ./test/iscsi_tgt/lvol/iscsi_lvol.sh

run_test ./test/iscsi_tgt/fio/fio.sh

run_test ./test/iscsi_tgt/qos/qos.sh

if [ $RUN_NIGHTLY -eq 1 ]; then

	if [ $SPDK_TEST_PMDK -eq 1 ]; then

#!/usr/bin/env bash

testdir=$(readlink -f $(dirname $0))

rootdir=$(readlink -f $testdir/../../..)

source $rootdir/test/common/autotest_common.sh

source $rootdir/test/iscsi_tgt/common.sh

function check_qos_works_well() {

	local enable_limit=$1

	local iops_limit=$2/1000

	local retval=0

	local read_iops=$($fio_py 8192 64 randread 5 | grep "\(read: IOPS=\|write: IOPS=\)" \

		| awk -F, '{print $1}' | awk -F= '{print $2}' | tr -d [k])

	if [ $enable_limit = true ]; then

		retval=$(echo "$iops_limit*0.9 < $read_iops && $read_iops < $iops_limit*1.01" | bc)

		if [ $retval -eq 0 ]; then

			echo "Failed to limit the io read rate of malloc bdev by qos"

			exit 1

		fi

	else

		retval=$(echo "$read_iops > $iops_limit" | bc)

		if [ $retval -eq 0 ]; then

			echo "$read_iops less than $iops_limit - expected greater than"

			exit 1

		fi

	fi

}

if [ -z "$TARGET_IP" ]; then

	echo "TARGET_IP not defined in environment"

	exit 1

fi

if [ -z "$INITIATOR_IP" ]; then

	echo "INITIATOR_IP not defined in environment"

	exit 1

fi

timing_enter qos

MALLOC_BDEV_SIZE=64

MALLOC_BLOCK_SIZE=4096

IOPS_LIMIT=20000

rpc_py="python $rootdir/scripts/rpc.py"

fio_py="python $rootdir/scripts/fio.py"

timing_enter start_iscsi_tgt

$ISCSI_APP &

pid=$!

echo "Process pid: $pid"

trap "killprocess $pid; exit 1" SIGINT SIGTERM EXIT

waitforlisten $pid

echo "iscsi_tgt is listening. Running tests..."

timing_exit start_iscsi_tgt

$rpc_py add_portal_group $PORTAL_TAG $TARGET_IP:$ISCSI_PORT

$rpc_py add_initiator_group $INITIATOR_TAG $INITIATOR_NAME $NETMASK

$rpc_py construct_malloc_bdev $MALLOC_BDEV_SIZE $MALLOC_BLOCK_SIZE

# "Malloc0:0" ==> use Malloc0 blockdev for LUN0

# "1:2" ==> map PortalGroup1 to InitiatorGroup2

# "64" ==> iSCSI queue depth 64

# "-d" ==> disable CHAP authentication

$rpc_py construct_target_node Target1 Target1_alias 'Malloc0:0' $PORTAL_TAG:$INITIATOR_TAG 64 -d

sleep 1

iscsiadm -m discovery -t sendtargets -p $TARGET_IP:$ISCSI_PORT

iscsiadm -m node --login -p $TARGET_IP:$ISCSI_PORT

trap "iscsicleanup; killprocess $pid; exit 1" SIGINT SIGTERM EXIT

# Limit the I/O rate by RPC, then confirm the observed rate matches.

$rpc_py set_bdev_qos_limit_iops Malloc0 $IOPS_LIMIT

check_qos_works_well true $IOPS_LIMIT

# Now disable the rate limiting, and confirm the observed rate is not limited anymore.

$rpc_py set_bdev_qos_limit_iops Malloc0 0

check_qos_works_well false $IOPS_LIMIT

# Limit the I/O rate again.

$rpc_py set_bdev_qos_limit_iops Malloc0 $IOPS_LIMIT

check_qos_works_well true $IOPS_LIMIT

echo "I/O rate limiting tests successful"

iscsicleanup

$rpc_py delete_target_node 'iqn.2016-06.io.spdk:Target1'

rm -f ./local-job0-0-verify.state

rm -f $testdir/iscsi.conf

trap - SIGINT SIGTERM EXIT

killprocess $pid

timing_exit qos