autotest: iscsi multiconnection test (porting from nightly to autotest)

This patch is used to test iscsi target with 30 target_node connection.
Each target_node uses one lvol bdev based on lvol store and nvme bdev.

Change-Id: I233ed6a32b417b23f2c01975a6c7fce0f46f22f3
Signed-off-by: Hailiang Wang <hailiangx.e.wang@intel.com>
Reviewed-on: https://review.gerrithub.io/389431
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>

test/iscsi_tgt/common.sh

@@ -8,6 +8,11 @@ if [ -z $INITIATOR_IP ]; then
 	echo "INITIATOR_IP not defined in environment; defaulting to $INITIATOR_IP"
 fi
 
+if [ -z $ISCSI_PORT ]; then
+	ISCSI_PORT=3260
+	echo "ISCSI_PORT not defined in environment; defaulting to $ISCSI_PORT"
+fi
+
 if [ -z "$ISCSI_APP" ]; then
 	ISCSI_APP=./app/iscsi_tgt/iscsi_tgt
 fi

test/iscsi_tgt/iscsi_tgt.sh

@@ -57,4 +57,8 @@ if [ $SPDK_TEST_NVMF -eq 1 ]; then
 	run_test ./test/iscsi_tgt/nvme_remote/fio_remote_nvme.sh 1
 fi
 
+if [ $RUN_NIGHTLY -eq 1 ]; then
+	run_test ./test/iscsi_tgt/multiconnection/multiconnection.sh
+fi
+
 timing_exit iscsi_tgt

test/iscsi_tgt/multiconnection/multiconnection.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+
+testdir=$(readlink -f $(dirname $0))
+rootdir=$(readlink -f $testdir/../../..)
+source $rootdir/scripts/autotest_common.sh
+source $rootdir/test/iscsi_tgt/common.sh
+
+rpc_py="python $rootdir/scripts/rpc.py"
+fio_py="python $rootdir/scripts/fio.py"
+
+CONNECTION_NUMBER=30
+
+# Remove lvol bdevs and stores.
+function remove_backends()
+{
+	echo "INFO: Removing lvol bdevs"
+	for i in `seq 1 $CONNECTION_NUMBER`; do
+		lun="lvs0/lbd_$i"
+		$rpc_py delete_bdev $lun
+		echo -e "\tINFO: lvol bdev $lun removed"
+	done
+	sleep 1
+
+	echo "INFO: Removing lvol stores"
+	$rpc_py destroy_lvol_store -l lvs0
+	echo "INFO: lvol store lvs0 removed"
+
+	return 0
+}
+
+set -e
+timing_enter multiconnection
+
+# Create conf file for iscsi multiconnection.
+cat > $testdir/iscsi.conf << EOL
+[iSCSI]
+  NodeBase "iqn.2016-06.io.spdk"
+  AuthFile /usr/local/etc/spdk/auth.conf
+  Timeout 30
+  DiscoveryAuthMethod Auto
+  MaxSessions 128
+  ImmediateData Yes
+  ErrorRecoveryLevel 0
+EOL
+
+# Get nvme info through filtering gen_nvme.sh's result.
+$rootdir/scripts/gen_nvme.sh >> $testdir/iscsi.conf
+
+timing_enter start_iscsi_tgt
+# Start the iSCSI target without using stub.
+$rootdir/app/iscsi_tgt/iscsi_tgt -c $testdir/iscsi.conf &
+iscsipid=$!
+echo "iSCSI target launched. pid: $iscsipid"
+trap "remove_backends; iscsicleanup; killprocess $iscsipid; exit 1" SIGINT SIGTERM EXIT
+
+waitforlisten $iscsipid
+timing_exit start_iscsi_tgt
+
+$rpc_py add_portal_group 1 $TARGET_IP:$ISCSI_PORT
+$rpc_py add_initiator_group 1 ANY $INITIATOR_IP/32
+
+echo "Creating an iSCSI target node."
+ls_guid=$($rpc_py construct_lvol_store "Nvme0n1" "lvs0" -c 1048576)
+
+# Assign even size for each lvol_bdev.
+get_lvs_free_mb $ls_guid
+lvol_bdev_size=$(($free_mb/$CONNECTION_NUMBER))
+for i in `seq 1 $CONNECTION_NUMBER`; do
+	$rpc_py construct_lvol_bdev -u $ls_guid lbd_$i $lvol_bdev_size
+done
+
+for i in `seq 1 $CONNECTION_NUMBER`; do
+	lun="lvs0/lbd_$i:0"
+	$rpc_py construct_target_node Target$i Target${i}_alias "$lun" "1:1" 256 1 0 0 0
+done
+sleep 1
+
+echo "Logging into iSCSI target."
+iscsiadm -m discovery -t sendtargets -p $TARGET_IP:$ISCSI_PORT
+iscsiadm -m node --login -p $TARGET_IP:$ISCSI_PORT
+sleep 1
+
+echo "Running FIO"
+$fio_py 131072 64 randrw 5
+$fio_py 262144 16 randwrite 10
+sync
+
+trap - SIGINT SIGTERM EXIT
+remove_backends
+
+rm -f $testdir/iscsi.conf
+rm -f ./local-job*
+iscsicleanup
+killprocess $iscsipid
+timing_exit multiconnection