X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftests%2Fsanityn.sh;h=d09a62f573139598127529be071904b365b7f664;hp=4cd17e5dffe658ef7fb756e7c6fc9e6716976e72;hb=3274e573957e8b8a067ae28c3f7d7788d40f310e;hpb=97a64c94671c3116eddd54ca2fdda88dfad466f0

diff --git a/lustre/tests/sanityn.sh b/lustre/tests/sanityn.sh
index 4cd17e5..d09a62f 100755
--- a/lustre/tests/sanityn.sh
+++ b/lustre/tests/sanityn.sh
@@ -3,45 +3,41 @@
 set -e
 
 ONLY=${ONLY:-"$*"}
-# bug number for skipped test: 9977/LU-7105
-#		LU-7105
-ALWAYS_EXCEPT=" 28	$SANITYN_EXCEPT"
-# UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
-
-SRCDIR=$(dirname $0)
-PATH=$PWD/$SRCDIR:$SRCDIR:$SRCDIR/../utils:$PATH
 
 SIZE=${SIZE:-40960}
-CHECKSTAT=${CHECKSTAT:-"checkstat -v"}
 OPENFILE=${OPENFILE:-openfile}
 OPENUNLINK=${OPENUNLINK:-openunlink}
-export MULTIOP=${MULTIOP:-multiop}
 export TMP=${TMP:-/tmp}
 MOUNT_2=${MOUNT_2:-"yes"}
 CHECK_GRANT=${CHECK_GRANT:-"yes"}
 GRANT_CHECK_LIST=${GRANT_CHECK_LIST:-""}
 
-SAVE_PWD=$PWD
-
-export NAME=${NAME:-local}
-
-LUSTRE=${LUSTRE:-`dirname $0`/..}
+LUSTRE=${LUSTRE:-$(dirname $0)/..}
 . $LUSTRE/tests/test-framework.sh
-CLEANUP=${CLEANUP:-:}
-SETUP=${SETUP:-:}
 init_test_env $@
-. ${CONFIG:=$LUSTRE/tests/cfg/$NAME.sh}
 init_logging
 
-if [ $(facet_fstype $SINGLEMDS) = "zfs" ]; then
-# bug number for skipped test:
-	ALWAYS_EXCEPT="$ALWAYS_EXCEPT "
-# LU-2829 / LU-2887 - make allowances for ZFS slowness
+ALWAYS_EXCEPT="$SANITYN_EXCEPT "
+# bug number for skipped test:  LU-7105
+ALWAYS_EXCEPT+="                28 "
+# UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
+
+# skip tests for PPC until they are fixed
+if [[ $(uname -m) = ppc64 ]]; then
+	# bug number:    LU-11597 LU-11787
+	ALWAYS_EXCEPT+=" 16a      71a"
+fi
+
+if [ $mds1_FSTYPE = "zfs" ]; then
+	# LU-2829 / LU-2887 - make allowances for ZFS slowness
 	TEST33_NFILES=${TEST33_NFILES:-1000}
 fi
+
 #                                  23   (min)"
 [ "$SLOW" = "no" ] && EXCEPT_SLOW="33a"
 
+build_test_filter
+
 FAIL_ON_ERROR=false
 
 SETUP=${SETUP:-:}
@@ -62,8 +58,6 @@ dd if=/dev/urandom of=$SAMPLE_FILE bs=1M count=1
 
 check_runas_id $RUNAS_ID $RUNAS_GID $RUNAS
 
-build_test_filter
-
 test_1() {
 	touch $DIR1/$tfile
 	[ -f $DIR2/$tfile ] || error "Check create"
@@ -316,65 +310,52 @@ test_14aa() {
 	MULTIPID=$!
 
 	$DIR2/$tdir/$tfile && error || true
-	kill -USR1 $MULTIPID
-	wait $MULTIPID || return 2
+	kill $MULTIPID
 }
 run_test 14aa "execution of file open for write returns -ETXTBSY"
 
 test_14ab() {
 	test_mkdir $DIR1/$tdir
-	cp -p $(which multiop) $DIR1/$tdir/multiop || error "cp failed"
-	MULTIOP_PROG=$DIR1/$tdir/multiop multiop_bg_pause $TMP/$tfile O_c ||
-		return 1
-	MULTIOP_PID=$!
-	$MULTIOP $DIR2/$tdir/multiop Oc && error "expected error, got success"
-	kill -USR1 $MULTIOP_PID || return 2
-	wait $MULTIOP_PID || return 3
-	rm $TMP/$tfile $DIR1/$tdir/multiop || error "removing multiop"
+	cp -p $(which sleep) $DIR1/$tdir/sleep || error "cp failed"
+	$DIR1/$tdir/sleep 60 &
+	SLEEP_PID=$!
+	$MULTIOP $DIR2/$tdir/sleep Oc && error "expected error, got success"
+	kill $SLEEP_PID
 }
 run_test 14ab "open(RDWR) of executing file returns -ETXTBSY"
 
 test_14b() { # bug 3192, 7040
 	test_mkdir $DIR1/$tdir
-	cp -p $(which multiop) $DIR1/$tdir/multiop || error "cp failed"
-	MULTIOP_PROG=$DIR1/$tdir/multiop multiop_bg_pause $TMP/$tfile O_c ||
-		return 1
-	MULTIOP_PID=$!
-	$TRUNCATE $DIR2/$tdir/multiop 0 && kill -9 $MULTIOP_PID && \
+	cp -p $(which sleep) $DIR1/$tdir/sleep || error "cp failed"
+	$DIR1/$tdir/sleep 60 &
+	SLEEP_PID=$!
+	$TRUNCATE $DIR2/$tdir/sleep 60 && kill -9 $SLEEP_PID && \
 		error "expected truncate error, got success"
-	kill -USR1 $MULTIOP_PID || return 2
-	wait $MULTIOP_PID || return 3
-	cmp $(which multiop) $DIR1/$tdir/multiop || error "binary changed"
-	rm $TMP/$tfile $DIR1/$tdir/multiop || error "removing multiop"
+	kill $SLEEP_PID
+	cmp $(which sleep) $DIR1/$tdir/sleep || error "binary changed"
 }
 run_test 14b "truncate of executing file returns -ETXTBSY ======"
 
 test_14c() { # bug 3430, 7040
 	test_mkdir $DIR1/$tdir
-	cp -p $(which multiop) $DIR1/$tdir/multiop || error "cp failed"
-	MULTIOP_PROG=$DIR1/$tdir/multiop multiop_bg_pause $TMP/$tfile O_c ||
-		return 1
-	MULTIOP_PID=$!
-	cp /etc/hosts $DIR2/$tdir/multiop && error "expected error, got success"
-	kill -USR1 $MULTIOP_PID || return 2
-	wait $MULTIOP_PID || return 3
-	cmp $(which multiop) $DIR1/$tdir/multiop || error "binary changed"
-	rm $TMP/$tfile $DIR1/$tdir/multiop || error "removing multiop"
+	cp -p $(which sleep) $DIR1/$tdir/sleep || error "cp failed"
+	$DIR1/$tdir/sleep 60 &
+	SLEEP_PID=$!
+	cp /etc/hosts $DIR2/$tdir/sleep && error "expected error, got success"
+	kill $SLEEP_PID
+	cmp $(which sleep) $DIR1/$tdir/sleep || error "binary changed"
 }
 run_test 14c "open(O_TRUNC) of executing file return -ETXTBSY =="
 
 test_14d() { # bug 10921
 	test_mkdir $DIR1/$tdir
-	cp -p $(which multiop) $DIR1/$tdir/multiop || error "cp failed"
-	MULTIOP_PROG=$DIR1/$tdir/multiop multiop_bg_pause $TMP/$tfile O_c ||
-		return 1
-	MULTIOP_PID=$!
+	cp -p $(which sleep) $DIR1/$tdir/sleep || error "cp failed"
+	$DIR1/$tdir/sleep 60 &
+	SLEEP_PID=$!
 	log chmod
-	chmod 600 $DIR1/$tdir/multiop || error "chmod failed"
-	kill -USR1 $MULTIOP_PID || return 2
-	wait $MULTIOP_PID || return 3
-	cmp $(which multiop) $DIR1/$tdir/multiop || error "binary changed"
-	rm $TMP/$tfile $DIR1/$tdir/multiop || error "removing multiop"
+	chmod 600 $DIR1/$tdir/sleep || error "chmod failed"
+	kill $SLEEP_PID
+	cmp $(which sleep) $DIR1/$tdir/sleep || error "binary changed"
 }
 run_test 14d "chmod of executing file is still possible ========"
 
@@ -382,7 +363,7 @@ test_15() {	# bug 974 - ENOSPC
 	echo "PATH=$PATH"
 	sh oos2.sh $MOUNT1 $MOUNT2
 	wait_delete_completed
-	grant_error=`dmesg | grep "> available"`
+	grant_error=$(dmesg | grep "< tot_grant")
 	[ -z "$grant_error" ] || error "$grant_error"
 }
 run_test 15 "test out-of-space with multiple writers ==========="
@@ -391,7 +372,7 @@ COUNT=${COUNT:-2500}
 # The FSXNUM reduction for ZFS is needed until ORI-487 is fixed.
 # We don't want to skip it entirely, but ZFS is VERY slow and cannot
 # pass a 2500 operation dual-mount run within the time limit.
-if [ "$(facet_fstype ost1)" = "zfs" ]; then
+if [ "$ost1_FSTYPE" = "zfs" ]; then
 	FSXNUM=$((COUNT / 5))
 	FSXP=1
 elif [ "$SLOW" = "yes" ]; then
@@ -415,8 +396,8 @@ test_16a() {
 	rm -f $file1
 
 	$LFS setstripe -c -1 $file1 # b=10919
-	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -S 0 $file1 $file2 \
-		|| error "fsx failed"
+	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -S 0 $file1 $file2 ||
+		error "fsx failed"
 	rm -f $file1
 
 	# O_DIRECT reads and writes must be aligned to the device block size.
@@ -429,18 +410,21 @@ run_test 16a "$FSXNUM iterations of dual-mount fsx"
 test_16b() {
 	local file1=$DIR1/$tfile
 	local file2=$DIR2/$tfile
+	local stripe_size=($($LFS getstripe -S $DIR))
 
 	# to allocate grant because it may run out due to test_15.
 	lfs setstripe -c -1 $file1
-	dd if=/dev/zero of=$file1 bs=$STRIPE_BYTES count=$OSTCOUNT oflag=sync
-	dd if=/dev/zero of=$file2 bs=$STRIPE_BYTES count=$OSTCOUNT oflag=sync
+	dd if=/dev/zero of=$file1 bs=$stripe_size count=$OSTCOUNT oflag=sync ||
+		error "dd failed writing to file=$file1"
+	dd if=/dev/zero of=$file2 bs=$stripe_size count=$OSTCOUNT oflag=sync ||
+		error "dd failed writing to file=$file2"
 	rm -f $file1
 
 	lfs setstripe -c -1 $file1 # b=10919
 	# -o is set to 8192 because writes < 1 page and between 1 and 2 pages
 	# create a mix of tiny writes & normal writes
-	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -o 8192 -S 0 $file1 \
-	$file2
+	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -o 8192 -S 0 \
+		$file1 $file2 || error "fsx with tiny write failed."
 }
 run_test 16b "$FSXNUM iterations of dual-mount fsx at small size"
 
@@ -450,7 +434,7 @@ test_16c() {
 	local stripe_size=$(do_facet $SINGLEMDS \
 		"$LCTL get_param -n lod.$(facet_svc $SINGLEMDS)*.stripesize")
 
-	[ $(facet_fstype ost1) != ldiskfs ] && skip "dio on ldiskfs only"
+	[ "$ost1_FSTYPE" != ldiskfs ] && skip "dio on ldiskfs only"
 
 	# to allocate grant because it may run out due to test_15.
 	$LFS setstripe -c -1 $file1
@@ -468,8 +452,8 @@ test_16c() {
 	set_osd_param $list '' writethrough_cache_enable 0
 
 	$LFS setstripe -c -1 $file1 # b=10919
-	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -S 0 $file1 $file2 \
-		|| error "fsx failed"
+	fsx -c 50 -p $FSXP -N $FSXNUM -l $((SIZE * 256)) -S 0 $file1 $file2 ||
+		error "fsx failed"
 	rm -f $file1
 
 	set_osd_param $list '' read_cache_enable 1
@@ -479,6 +463,66 @@ test_16c() {
 }
 run_test 16c "verify data consistency on ldiskfs with cache disabled (b=17397)"
 
+test_16d() {
+	local file1=$DIR1/$tfile
+	local file2=$DIR2/$tfile
+	local file3=$DIR1/file
+	local stripe_size=$(do_facet $SINGLEMDS \
+		"$LCTL get_param -n lod.$(facet_svc $SINGLEMDS)*.stripesize")
+
+	# to allocate grant because it may run out due to test_15.
+	$LFS setstripe -c -1 $file1
+	dd if=/dev/zero of=$file1 bs=$stripe_size count=$OSTCOUNT oflag=sync
+	dd if=/dev/zero of=$file2 bs=$stripe_size count=$OSTCOUNT oflag=sync
+	rm -f $file1
+
+	local tmpfile=`mktemp`
+	$LFS setstripe -c -1 $file1 # b=10919
+	$LCTL set_param ldlm.namespaces.*.lru_size=clear
+	
+	# direct write on one client and direct read from another
+	dd if=/dev/urandom of=$file1 bs=1M count=100 oflag=direct
+	dd if=$file2 of=$tmpfile iflag=direct bs=1M
+	diff $file1 $tmpfile || error "file different(1)"
+	rm -f $file1
+
+	# buffer write on one client, but direct read from another
+	dd if=$tmpfile of=$file1 bs=1M count=100
+	dd if=$file2 of=$file3 bs=1M iflag=direct count=100
+	diff $file3 $tmpfile || error "file different(2)"
+
+	rm -f $file3 $file2 $file1
+	# direct write on one client
+	dd if=$tmpfile of=$file1 bs=1M count=100 oflag=direct
+	# buffer read from another client
+	dd if=$file2 of=$file3 bs=1M count=100
+	diff $file3 $tmpfile || error "file different(3)"
+
+	rm -f $file1 $file2 $file3 $tmpfile
+
+}
+run_test 16d "Verify DIO and buffer IO with two clients"
+
+test_16e() { # LU-13227
+	local file1=$DIR1/$tfile
+	local file2=$DIR2/$tfile
+
+	# client1 write 10M data
+	dd if=/dev/zero of=$file1 bs=1M count=10
+	# drop locks
+	cancel_lru_locks osc > /dev/null
+	# use lockahead to generate one PW lock to keep LVB loaded.
+	$LFS ladvise -a lockahead --start 0 --length 1M \
+		--mode WRITE $file1
+	# direct write to extend file size on client2
+	dd if=/dev/zero of=$file2 bs=1M seek=20 count=1 \
+		oflag=direct conv=notrunc
+	local filesize=$(stat -c %s $file2)
+	[ "$filesize" -eq 22020096 ] ||
+		error "expected filesize 22020096 got $filesize"
+	rm -f $file1
+}
+run_test 16e "Verify size consistency for O_DIRECT write"
 
 test_17() { # bug 3513, 3667
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
@@ -506,7 +550,9 @@ test_18() {
                 excepts="$excepts -e $(($(printf %d \'$idx)-96))"
         done
 
-	$LUSTRE/tests/mmap_sanity -d $MOUNT1 -m $MOUNT2 $excepts
+	excepts="$excepts -e 7 -e 8 -e 9"
+	$LUSTRE/tests/mmap_sanity -d $MOUNT1 -m $MOUNT2 $excepts ||
+		error "mmap_sanity test failed"
 	sync; sleep 1; sync
 }
 run_test 18 "mmap sanity check ================================="
@@ -542,16 +588,16 @@ test_19() { # bug3811
 run_test 19 "test concurrent uncached read races ==============="
 
 test_20() {
-	test_mkdir $DIR1/d20
-	cancel_lru_locks $OSC
-	CNT=$((`lctl get_param -n llite.*.dump_page_cache | wc -l`))
-	$MULTIOP $DIR1/f20 Ow8190c
-	$MULTIOP $DIR2/f20 Oz8194w8190c
-	$MULTIOP $DIR1/f20 Oz0r8190c
-	cancel_lru_locks $OSC
-	CNTD=$((`lctl get_param -n llite.*.dump_page_cache | wc -l` - $CNT))
-	[ $CNTD -gt 0 ] && \
-	    error $CNTD" page left in cache after lock cancel" || true
+	test_mkdir $DIR1/$tdir
+	cancel_lru_locks
+	CNT=$($LCTL get_param -n llite.*.dump_page_cache | wc -l)
+	$MULTIOP $DIR1/$tdir/$tfile Ow8190c
+	$MULTIOP $DIR2/$tdir/$tfile Oz8194w8190c
+	$MULTIOP $DIR1/$tdir/$tfile Oz0r8190c
+	cancel_lru_locks
+	CNT2=$($LCTL get_param -n llite.*.dump_page_cache | wc -l)
+	[[ $CNT2 == $CNT ]] ||
+		error $((CNT2 - CNT))" page left in cache after lock cancel"
 }
 run_test 20 "test extra readahead page left in cache ===="
 
@@ -707,7 +753,7 @@ test_27() {
 	lctl clear
 	dd if=/dev/zero of=$DIR2/$tfile bs=$((4096+4))k conv=notrunc count=4 seek=3 &
 	DD2_PID=$!
-	usleep 50
+	sleep 0.5
 	log "dd 1 started"
 
 	dd if=/dev/zero of=$DIR1/$tfile bs=$((16384-1024))k conv=notrunc count=1 seek=4 &
@@ -814,11 +860,13 @@ enable_lockless_truncate() {
 }
 
 test_32a() { # bug 11270
-	local p="$TMP/$TESTSUITE-$TESTNAME.parameters"
+	local save="$TMP/$TESTSUITE-$TESTNAME.parameters"
 	local stripe_size=$(do_facet $SINGLEMDS \
 		"$LCTL get_param -n lod.$(facet_svc $SINGLEMDS)*.stripesize")
 
-	save_lustre_params client "$OSC.*.lockless_truncate" > $p
+	save_lustre_params client "$OSC.*.lockless_truncate" > $save
+	# restore lockless_truncate default values on exit
+	stack_trap "restore_lustre_params < $save; rm -f $save" EXIT
 	cancel_lru_locks $OSC
 	enable_lockless_truncate 1
 	rm -f $DIR1/$tfile
@@ -829,13 +877,15 @@ test_32a() { # bug 11270
 
 	log "checking cached lockless truncate"
 	$TRUNCATE $DIR1/$tfile 8000000
-	$CHECKSTAT -s 8000000 $DIR2/$tfile || error "wrong file size"
+	$CHECKSTAT -s 8000000 $DIR2/$tfile ||
+		error "cached truncate - wrong file size"
 	[ $(calc_stats $OSC.*.${OSC}_stats lockless_truncate) -ne 0 ] ||
 		error "cached truncate isn't lockless"
 
 	log "checking not cached lockless truncate"
 	$TRUNCATE $DIR2/$tfile 5000000
-	$CHECKSTAT -s 5000000 $DIR1/$tfile || error "wrong file size"
+	$CHECKSTAT -s 5000000 $DIR1/$tfile ||
+		error "not cached truncate - wrong file size"
 	[ $(calc_stats $OSC.*.${OSC}_stats lockless_truncate) -ne 0 ] ||
 		error "not cached truncate isn't lockless"
 
@@ -843,13 +893,11 @@ test_32a() { # bug 11270
 	enable_lockless_truncate 0
 	clear_stats $OSC.*.${OSC}_stats
 	$TRUNCATE $DIR2/$tfile 3000000
-	$CHECKSTAT -s 3000000 $DIR1/$tfile || error "wrong file size"
+	$CHECKSTAT -s 3000000 $DIR1/$tfile ||
+		error "lockless truncate disabled - wrong file size"
 	[ $(calc_stats $OSC.*.${OSC}_stats lockless_truncate) -eq 0 ] ||
 		error "lockless truncate disabling failed"
-	rm $DIR1/$tfile
-	# restore lockless_truncate default values
-	restore_lustre_params < $p
-	rm -f $p
+	rm -f $DIR1/$tfile
 }
 run_test 32a "lockless truncate"
 
@@ -927,52 +975,52 @@ print_jbd_stat () {
 
 # commit on sharing tests
 test_33a() {
-    remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 
-    [ -z "$CLIENTS" ] && skip "Need two or more clients, have $CLIENTS" && return 0
-    [ $CLIENTCOUNT -lt 2 ] &&
-	skip "Need two or more clients, have $CLIENTCOUNT" && return 0
+	[ -z "$CLIENTS" ] && skip "Need two or more clients, have $CLIENTS"
+	[ $CLIENTCOUNT -lt 2 ] &&
+		skip "Need two or more clients, have $CLIENTCOUNT"
 
-    local nfiles=${TEST33_NFILES:-10000}
-    local param_file=$TMP/$tfile-params
-    local fstype=$(facet_fstype $SINGLEMDS)
+	local nfiles=${TEST33_NFILES:-10000}
+	local param_file=$TMP/$tfile-params
+	local COS
+	local jbdold="N/A"
+	local jbdnew="N/A"
+	local jbd
 
 	save_lustre_params $(get_facets MDS) \
 		"mdt.*.commit_on_sharing" > $param_file
 
-    local COS
-    local jbdold="N/A"
-    local jbdnew="N/A"
-    local jbd
-
-    for COS in 0 1; do
-        do_facet $SINGLEMDS lctl set_param mdt.*.commit_on_sharing=$COS
-        avgjbd=0
-        avgtime=0
-        for i in 1 2 3; do
-            do_nodes $CLIENT1,$CLIENT2 "mkdir -p $DIR1/$tdir-\\\$(hostname)-$i"
-
-            [ $fstype = ldiskfs ] && jbdold=$(print_jbd_stat)
-            echo "=== START createmany old: $jbdold transaction"
-            local elapsed=$(do_and_time "do_nodes $CLIENT1,$CLIENT2 createmany -o $DIR1/$tdir-\\\$(hostname)-$i/f- -r$DIR2/$tdir-\\\$(hostname)-$i/f- $nfiles > /dev/null 2>&1")
-            [ $fstype = ldiskfs ] && jbdnew=$(print_jbd_stat)
-            [ $fstype = ldiskfs ] && jbd=$(( jbdnew - jbdold ))
-            echo "=== END   createmany new: $jbdnew transaction :  $jbd transactions  nfiles $nfiles time $elapsed COS=$COS"
-            [ $fstype = ldiskfs ] && avgjbd=$(( avgjbd + jbd ))
-            avgtime=$(( avgtime + elapsed ))
-        done
-        eval cos${COS}_jbd=$((avgjbd / 3))
-        eval cos${COS}_time=$((avgtime / 3))
-    done
+	for COS in 0 1; do
+		do_facet $SINGLEMDS lctl set_param mdt.*.commit_on_sharing=$COS
+		avgjbd=0
+		avgtime=0
+		for i in 1 2 3; do
+			do_nodes $CLIENT1,$CLIENT2 "mkdir -p $DIR1/$tdir-\\\$(hostname)-$i"
+
+		[ "$mds1_FSTYPE" = ldiskfs ] && jbdold=$(print_jbd_stat)
+		echo "=== START createmany old: $jbdold transaction"
+		local elapsed=$(do_and_time "do_nodes $CLIENT1,$CLIENT2 createmany -o $DIR1/$tdir-\\\$(hostname)-$i/f- -r$DIR2/$tdir-\\\$(hostname)-$i/f- $nfiles > /dev/null 2>&1")
+		[ "$mds1_FSTYPE" = ldiskfs ] && jbdnew=$(print_jbd_stat)
+		[ "$mds1_FSTYPE" = ldiskfs ] && jbd=$(( jbdnew - jbdold ))
+		echo "=== END   createmany new: $jbdnew transaction :  $jbd transactions  nfiles $nfiles time $elapsed COS=$COS"
+		[ "$mds1_FSTYPE" = ldiskfs ] && avgjbd=$(( avgjbd + jbd ))
+		avgtime=$(( avgtime + elapsed ))
+		done
+	eval cos${COS}_jbd=$((avgjbd / 3))
+	eval cos${COS}_time=$((avgtime / 3))
+	done
 
-    echo "COS=0 transactions (avg): $cos0_jbd  time (avg): $cos0_time"
-    echo "COS=1 transactions (avg): $cos1_jbd  time (avg): $cos1_time"
-    [ "$cos0_jbd" != 0 ] && echo "COS=1 vs COS=0 jbd:  $((((cos1_jbd/cos0_jbd - 1)) * 100 )) %"
-    [ "$cos0_time" != 0 ] && echo "COS=1 vs COS=0 time: $((((cos1_time/cos0_time - 1)) * 100 )) %"
+	echo "COS=0 transactions (avg): $cos0_jbd  time (avg): $cos0_time"
+	echo "COS=1 transactions (avg): $cos1_jbd  time (avg): $cos1_time"
+	[ "$cos0_jbd" != 0 ] &&
+		echo "COS=1 vs COS=0 jbd:  $((((cos1_jbd/cos0_jbd - 1)) * 100 )) %"
+	[ "$cos0_time" != 0 ] &&
+		echo "COS=1 vs COS=0 time: $((((cos1_time/cos0_time - 1)) * 100 )) %"
 
-    restore_lustre_params < $param_file
-    rm -f $param_file
-    return 0
+	restore_lustre_params < $param_file
+	rm -f $param_file
+	return 0
 }
 run_test 33a "commit on sharing, cross crete/delete, 2 clients, benchmark"
 
@@ -1037,9 +1085,13 @@ test_33b() {
 run_test 33b "COS: cross create/delete, 2 clients, benchmark under remote dir"
 
 test_33c() {
-	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.63) ] &&
-		skip "DNE CoS not supported" && return
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
+	[ "$MDS1_VERSION" -lt $(version_code 2.7.63) ] &&
+		skip "DNE CoS not supported"
+
+	# LU-13522
+	stop mds1
+	start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS || error "start mds1 failed"
 
 	local sync_count
 
@@ -1095,9 +1147,9 @@ op_trigger_cos() {
 }
 
 test_33d() {
-	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.63) ] &&
-		skip "DNE CoS not supported" && return
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
+	[ "$MDS1_VERSION" -lt $(version_code 2.7.63) ] &&
+		skip "DNE CoS not supported"
 
 	# remote directory create
 	op_trigger_cos "mkdir $DIR/$tdir" "$LFS mkdir -i 1 $DIR/$tdir/subdir"
@@ -1132,13 +1184,12 @@ test_33d() {
 run_test 33d "DNE distributed operation should trigger COS"
 
 test_33e() {
-	[ -n "$CLIENTS" ] || { skip "Need two or more clients" && return 0; }
+	[ -n "$CLIENTS" ] || skip "Need two or more clients"
 	[ $CLIENTCOUNT -ge 2 ] ||
-		{ skip "Need two or more clients, have $CLIENTCOUNT" &&
-								return 0; }
-	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.63) ] &&
-		skip "DNE CoS not supported" && return
+		skip "Need two or more clients, have $CLIENTCOUNT"
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
+	[ "$MDS1_VERSION" -lt $(version_code 2.7.63) ] &&
+		skip "DNE CoS not supported"
 
 	local client2=${CLIENT2:-$(hostname)}
 
@@ -1284,7 +1335,7 @@ test_35() { # bug 17645
 	for g in $gen; do
 	    if ! test "$g" -eq "${generation[count]}"; then
 		list=$(lctl list_param mdc.$FSNAME-MDT*-mdc-*.import)
-		local c = 0
+		local c=0
 		for imp in $list; do
 			if [ $c = $count ]; then
 				break
@@ -1473,13 +1524,32 @@ test_39d() { # LU-7310
 }
 run_test 39d "sync write should update mtime"
 
+pdo_sched() {
+	# how long 40-47 take with specific delay
+	# sleep 0.1 # 78s
+	# sleep 0.2 # 103s
+	# sleep 0.3 # 124s
+	sleep 0.5 # 164s
+}
+
+# for pdo testing, we must cancel MDT-MDT locks as well as client locks to
+# avoid unexpected delays due to previous tests
+pdo_lru_clear() {
+	cancel_lru_locks mdc
+	do_nodes $(comma_list $(mdts_nodes)) \
+		$LCTL set_param -n ldlm.namespaces.*mdt*.lru_size=clear
+	do_nodes $(comma_list $(mdts_nodes)) \
+		$LCTL get_param ldlm.namespaces.*mdt*.lock_unused_count \
+			ldlm.namespaces.*mdt*.lock_count | grep -v '=0'
+}
+
 # check that pid exists hence second operation wasn't blocked by first one
 # if it is so then there is no conflict, return 0
 # else second operation is conflicting with first one, return 1
 check_pdo_conflict() {
 	local pid=$1
 	local conflict=0
-	sleep 1 # to ensure OP1 is finished on client if OP2 is blocked by OP1
+	pdo_sched # to ensure OP1 is finished on client if OP2 is blocked by OP1
 	if [[ `ps --pid $pid | wc -l` == 1 ]]; then
 		conflict=1
 		echo "Conflict"
@@ -1493,12 +1563,13 @@ check_pdo_conflict() {
 # test 40: check non-blocking operations
 test_40a() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	touch $DIR2
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
+	PID1=$!; pdo_sched
 	touch $DIR2/$tfile-2
 	check_pdo_conflict $PID1 || error "create is blocked"
 	mkdir $DIR2/$tfile-3
@@ -1515,6 +1586,8 @@ test_40a() {
 
 	#  all operations above shouldn't wait the first one
 	check_pdo_conflict $PID1 || error "parallel operation is blocked"
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	wait $PID1
 	rm -rf $DIR/$tfile*
 	return 0
@@ -1523,11 +1596,12 @@ run_test 40a "pdirops: create vs others =============="
 
 test_40b() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	touch $DIR1/$tfile &
-	PID1=$!
-	sleep 1
+	PID1=$!; pdo_sched
 	# open|create
 	touch $DIR2/$tfile-2
 	check_pdo_conflict $PID1 || error "create is blocked"
@@ -1545,6 +1619,8 @@ test_40b() {
 	# all operations above shouldn't wait the first one
 
         check_pdo_conflict $PID1 || error "parallel operation is blocked"
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	wait $PID1
 	rm -rf $DIR/$tfile*
 	return 0
@@ -1553,12 +1629,13 @@ run_test 40b "pdirops: open|create and others =============="
 
 test_40c() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile $DIR1/$tfile-0 &
-	PID1=$!
-	sleep 1
+	PID1=$!; pdo_sched
 	# open|create
 	touch $DIR2/$tfile-2
 	check_pdo_conflict $PID1 || error "create is blocked"
@@ -1576,6 +1653,8 @@ test_40c() {
 
         # all operations above shouldn't wait the first one
 	check_pdo_conflict $PID1 || error "parallel operation is blocked"
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	wait $PID1
 	rm -rf $DIR/$tfile*
 	return 0
@@ -1584,12 +1663,13 @@ run_test 40c "pdirops: link and others =============="
 
 test_40d() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
+	PID1=$!; pdo_sched
 	# open|create
 	touch $DIR2/$tfile-2
 	check_pdo_conflict $PID1 || error "create is blocked"
@@ -1607,6 +1687,8 @@ test_40d() {
 
 	# all operations above shouldn't wait the first one
 	check_pdo_conflict $PID1 || error "parallel operation is blocked"
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	wait $PID1
 	return 0
 }
@@ -1614,12 +1696,13 @@ run_test 40d "pdirops: unlink and others =============="
 
 test_40e() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-0 &
-	PID1=$!
-	sleep 1
+	PID1=$!; pdo_sched
 	# open|create
 	touch $DIR2/$tfile-2
 	check_pdo_conflict $PID1 || error "create is blocked"
@@ -1635,6 +1718,8 @@ test_40e() {
 
        # all operations above shouldn't wait the first one
 	check_pdo_conflict $PID1 || error "parallel operation is blocked"
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	wait $PID1
 	rm -rf $DIR/$tfile*
 	return 0
@@ -1643,106 +1728,146 @@ run_test 40e "pdirops: rename and others =============="
 
 # test 41: create blocking operations
 test_41a() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile && error "mkdir must fail"
+	PID1=$! ; pdo_sched
+	mkdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; echo "mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41a "pdirops: create vs mkdir =============="
 
 test_41b() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c && error "create must fail"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "create must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41b "pdirops: create vs create =============="
 
 test_41c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-2 $DIR2/$tfile && error "link must fail"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "link must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41c "pdirops: create vs link =============="
 
 test_41d() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	rm $DIR2/$tfile || error "unlink must succeed"
+	PID1=$! ; pdo_sched
+	rm $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "unlink must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41d "pdirops: create vs unlink =============="
 
 test_41e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile-2 $DIR2/$tfile || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41e "pdirops: create and rename (tgt) =============="
 
 test_41f() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-2 || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-2 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41f "pdirops: create and rename (src) =============="
 
 test_41g() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null || error "stat must succeed"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "stat must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 41g "pdirops: create vs getattr =============="
 
 test_41h() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$MULTIOP $DIR1/$tfile oO_CREAT:O_RDWR:c &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -1750,221 +1875,291 @@ run_test 41h "pdirops: create vs readdir =============="
 
 # test 42: unlink and blocking operations
 test_42a() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile && error "mkdir must fail"
+	PID1=$! ; pdo_sched
+	mkdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42a "pdirops: mkdir vs mkdir =============="
 
 test_42b() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c && error "create must fail"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "create must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42b "pdirops: mkdir vs create =============="
 
 test_42c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-2 $DIR2/$tfile && error "link must fail"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "link must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42c "pdirops: mkdir vs link =============="
 
 test_42d() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	rmdir $DIR2/$tfile || error "unlink must succeed"
+	PID1=$! ; pdo_sched
+	rmdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "unlink must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42d "pdirops: mkdir vs unlink =============="
 
 test_42e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv -T $DIR2/$tfile-2 $DIR2/$tfile && error "rename must fail"
+	PID1=$! ; pdo_sched
+	mv -T $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "rename must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42e "pdirops: mkdir and rename (tgt) =============="
 
 test_42f() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-2 || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-2 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42f "pdirops: mkdir and rename (src) =============="
 
 test_42g() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null || error "stat must succeed"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "stat must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42g "pdirops: mkdir vs getattr =============="
 
 test_42h() {
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mkdir $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 42h "pdirops: mkdir vs readdir =============="
 
-# test 43: unlink and blocking operations
+# test 43: rmdir,mkdir won't return -EEXIST
 test_43a() {
-	touch $DIR1/$tfile
-#define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
-	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile || error "mkdir must succeed"
-	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
-	rm -rf $DIR/$tfile*
+	for i in {1..1000}; do
+		mkdir $DIR1/$tdir || error "mkdir $tdir failed"
+		rmdir $DIR2/$tdir || error "rmdir $tdir failed"
+	done
 	return 0
 }
-run_test 43a "pdirops: unlink vs mkdir =============="
+run_test 43a "rmdir,mkdir doesn't return -EEXIST =============="
 
 test_43b() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c || error "create must succeed"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "create must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43b "pdirops: unlink vs create =============="
 
 test_43c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-2 $DIR2/$tfile || error "link must succeed"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "link must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43c "pdirops: unlink vs link =============="
 
 test_43d() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	rm $DIR2/$tfile && error "unlink must fail"
+	PID1=$! ; pdo_sched
+	rm $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "unlink must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43d "pdirops: unlink vs unlink =============="
 
 test_43e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv -u $DIR2/$tfile-2 $DIR2/$tfile || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv -u $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43e "pdirops: unlink and rename (tgt) =============="
 
 test_43f() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-2 && error "rename must fail"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-2 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "rename must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43f "pdirops: unlink and rename (src) =============="
 
 test_43g() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null && error "stat must fail"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "stat must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43g "pdirops: unlink vs getattr =============="
 
 test_43h() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -1972,132 +2167,200 @@ run_test 43h "pdirops: unlink vs readdir =============="
 
 test_43i() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	rm $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$LFS mkdir -i 1 $DIR2/$tfile || error "remote mkdir must succeed"
+	PID1=$! ; pdo_sched
+	$LFS mkdir -i 1 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 &&
 		{ wait $PID1; error "remote mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "remote mkdir must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 43i "pdirops: unlink vs remote mkdir"
 
+test_43j() {
+	[[ $MDS1_VERSION -lt $(version_code 2.13.52) ]] &&
+		skip "Need MDS version newer than 2.13.52"
+
+	for i in {1..100}; do
+#define OBD_FAIL_ONCE|OBD_FAIL_MDS_CREATE_RACE         0x167
+		do_nodes $(comma_list $(mdts_nodes)) \
+			"lctl set_param -n fail_loc=0x80000167 2>/dev/null ||
+				true"
+		OK=0
+		mkdir $DIR1/$tdir &
+		PID1=$!
+		mkdir $DIR2/$tdir && ((OK++))
+		wait $PID1 && ((OK++))
+		(( OK == 1 )) || error "exactly one mkdir should succeed"
+
+		rmdir $DIR1/$tdir || error "rmdir failed"
+	done
+	return 0
+}
+run_test 43j "racy mkdir return EEXIST =============="
+
 # test 44: rename tgt and blocking operations
 test_44a() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2   0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile && error "mkdir must fail"
-	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
+	PID1=$! ; pdo_sched
+	mkdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
+	check_pdo_conflict $PID1 && { wait $PID1; date;error "mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "mkdir must fail"
+	date
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44a "pdirops: rename tgt vs mkdir =============="
 
 test_44b() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c && error "create must fail"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "create must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44b "pdirops: rename tgt vs create =============="
 
 test_44c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-3 $DIR2/$tfile && error "link must fail"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-3 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "link must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44c "pdirops: rename tgt vs link =============="
 
 test_44d() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	rm $DIR2/$tfile || error "unlink must succeed"
+	PID1=$! ; pdo_sched
+	rm $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "unlink must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44d "pdirops: rename tgt vs unlink =============="
 
 test_44e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 	touch $DIR1/$tfile-2
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile-3 $DIR2/$tfile || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile-3 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44e "pdirops: rename tgt and rename (tgt) =============="
 
 test_44f() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-3 || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-3 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44f "pdirops: rename tgt and rename (src) =============="
 
 test_44g() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null || error "stat must succeed"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "stat must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44g "pdirops: rename tgt vs getattr =============="
 
 test_44h() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2    0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2106,130 +2369,166 @@ run_test 44h "pdirops: rename tgt vs readdir =============="
 # test 44: rename tgt and blocking operations
 test_44i() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK2   0x146
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000146
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000146 2>/dev/null || true"
 	mv $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$LFS mkdir -i 1 $DIR2/$tfile && error "remote mkdir must fail"
+	PID1=$! ; pdo_sched
+	$LFS mkdir -i 1 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 				error "remote mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "remote mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 44i "pdirops: rename tgt vs remote mkdir"
 
-# test 45: rename src and blocking operations
+# test 45: rename,mkdir doesn't fail with -EEXIST
 test_45a() {
-	touch $DIR1/$tfile
-#define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
-	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile || error "mkdir must succeed"
-	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
-	rm -rf $DIR/$tfile*
+	for i in {1..1000}; do
+		mkdir $DIR1/$tdir || error "mkdir $tdir failed"
+		mrename $DIR2/$tdir $DIR2/$tdir.$i > /dev/null ||
+			error "mrename to $tdir.$i failed"
+	done
+	rm -rf $DIR/$tdir*
 	return 0
 }
-run_test 45a "pdirops: rename src vs mkdir =============="
+run_test 45a "rename,mkdir doesn't return -EEXIST =============="
 
 test_45b() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c || error "create must succeed"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "create must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45b "pdirops: rename src vs create =============="
 
 test_45c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-3 $DIR2/$tfile || error "link must succeed"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-3 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "link must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45c "pdirops: rename src vs link =============="
 
 test_45d() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	rm $DIR2/$tfile && error "unlink must fail"
+	PID1=$! ; pdo_sched
+	rm $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "unlink must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45d "pdirops: rename src vs unlink =============="
 
 test_45e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile-3 $DIR2/$tfile || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile-3 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45e "pdirops: rename src and rename (tgt) =============="
 
 test_45f() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-3 && error "rename must fail"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-3 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "rename must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45f "pdirops: rename src and rename (src) =============="
 
 test_45g() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null && error "stat must fail"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "stat must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 45g "pdirops: rename src vs getattr =============="
 
 test_45h() {
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2237,15 +2536,20 @@ run_test 45h "pdirops: unlink vs readdir =============="
 
 test_45i() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	mv $DIR1/$tfile $DIR1/$tfile-2 &
-	PID1=$!
-	sleep 1
-	$LFS mkdir -i 1 $DIR2/$tfile || error "create remote dir must succeed"
+	PID1=$! ; pdo_sched
+	$LFS mkdir -i 1 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 				error "create remote dir isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "create remote dir must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2253,115 +2557,154 @@ run_test 45i "pdirops: rename src vs remote mkdir"
 
 # test 46: link and blocking operations
 test_46a() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile && error "mkdir must fail"
+	PID1=$! ; pdo_sched
+	mkdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46a "pdirops: link vs mkdir =============="
 
 test_46b() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c && error "create must fail"
+	PID1=$! ; pdo_sched
+	$MULTIOP $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "create isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "create must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46b "pdirops: link vs create =============="
 
 test_46c() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile $DIR2/$tfile && error "link must fail"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "link must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46c "pdirops: link vs link =============="
 
 test_46d() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	rm $DIR2/$tfile || error "unlink must succeed"
+	PID1=$! ; pdo_sched
+	rm $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "unlink must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46d "pdirops: link vs unlink =============="
 
 test_46e() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile-3 $DIR2/$tfile || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile-3 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46e "pdirops: link and rename (tgt) =============="
 
 test_46f() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 	touch $DIR1/$tfile-3
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-3 || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-3 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46f "pdirops: link and rename (src) =============="
 
 test_46g() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null || error "stat must succeed"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "stat must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
 run_test 46g "pdirops: link vs getattr =============="
 
 test_46h() {
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	ls -lia $DIR2/ > /dev/null
-	check_pdo_conflict $PID1 && { wait $PID1;
-			error "readdir isn't blocked"; }
+	PID1=$! ; pdo_sched
+	ls -lia $DIR2/ > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
+	check_pdo_conflict $PID1 && { wait $PID1; error "readdir isn't blocked"; }
+	wait $PID2
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2369,15 +2712,20 @@ run_test 46h "pdirops: link vs readdir =============="
 
 test_46i() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	link $DIR1/$tfile-2 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	$LFS mkdir -i 1 $DIR2/$tfile && error "remote mkdir must fail"
+	PID1=$! ; pdo_sched
+	$LFS mkdir -i 1 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 				error "remote mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "remote mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2387,12 +2735,17 @@ run_test 46i "pdirops: link vs remote mkdir"
 test_47a() {
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	pdo_lru_clear
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mkdir $DIR2/$tfile && error "mkdir must fail"
+	PID1=$! ; pdo_sched
+	mkdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "mkdir isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "mkdir must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2401,13 +2754,19 @@ run_test 47a "pdirops: remote mkdir vs mkdir"
 test_47b() {
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	pdo_lru_clear
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	multiop $DIR2/$tfile oO_CREAT:O_EXCL:c && error "create must fail"
+	PID1=$! ; pdo_sched
+	sleep 1 # please do not remove this sleep, see LU-10754
+	multiop $DIR2/$tfile oO_CREAT:O_EXCL:c &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 					error "create isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "create must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2415,14 +2774,19 @@ run_test 47b "pdirops: remote mkdir vs create"
 
 test_47c() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	link $DIR2/$tfile-2 $DIR2/$tfile && error "link must fail"
+	PID1=$! ; pdo_sched
+	link $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1; error "link isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "link must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2430,14 +2794,19 @@ run_test 47c "pdirops: remote mkdir vs link"
 
 test_47d() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	rmdir $DIR2/$tfile || error "unlink must succeed"
+	PID1=$! ; pdo_sched
+	rmdir $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 					error "unlink isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rmdir must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2445,15 +2814,20 @@ run_test 47d "pdirops: remote mkdir vs unlink"
 
 test_47e() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 	touch $DIR1/$tfile-2
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv -T $DIR2/$tfile-2 $DIR2/$tfile && error "rename must fail"
+	PID1=$! ; pdo_sched
+	mv -T $DIR2/$tfile-2 $DIR2/$tfile &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 					error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -ne 0 ] || error "rename must fail"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2461,14 +2835,19 @@ run_test 47e "pdirops: remote mkdir and rename (tgt)"
 
 test_47f() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	mv $DIR2/$tfile $DIR2/$tfile-2 || error "rename must succeed"
+	PID1=$! ; pdo_sched
+	mv $DIR2/$tfile $DIR2/$tfile-2 &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 					error "rename isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "rename must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2476,14 +2855,21 @@ run_test 47f "pdirops: remote mkdir and rename (src)"
 
 test_47g() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	sync
+	sync_all_data
+	pdo_lru_clear
 #define OBD_FAIL_ONCE|OBD_FAIL_MDS_PDO_LOCK    0x145
-	do_facet $SINGLEMDS lctl set_param fail_loc=0x80000145
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0x80000145 2>/dev/null || true"
 	$LFS mkdir -i 1 $DIR1/$tfile &
-	PID1=$!
-	sleep 1
-	stat $DIR2/$tfile > /dev/null || error "stat must succeed"
+	PID1=$! ; pdo_sched
+	stat $DIR2/$tfile > /dev/null &
+	PID2=$! ; pdo_sched
+	do_nodes $(comma_list $(mdts_nodes)) \
+		"lctl set_param -n fail_loc=0 2>/dev/null || true"
 	check_pdo_conflict $PID1 && { wait $PID1;
 					error "getattr isn't blocked"; }
+	wait $PID2 ; [ $? -eq 0 ] || error "stat must succeed"
 	rm -rf $DIR/$tfile*
 	return 0
 }
@@ -2536,29 +2922,32 @@ test_51a() {
 run_test 51a "layout lock: refresh layout should work"
 
 test_51b() {
-	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.3.59) ]] ||
-		{ skip "Need MDS version at least 2.3.59"; return 0; }
+	[[ "$MDS1_VERSION" -ge $(version_code 2.3.59) ]] ||
+		skip "Need MDS version at least 2.3.59"
 
 	local tmpfile=`mktemp`
 
-	# create an empty file
-	$MCREATE $DIR1/$tfile || error "mcreate $DIR1/$tfile failed"
+	$LFS setstripe -E 1M -c 1 -E -1 --extension-size 64M $DIR1/$tfile ||
+		error "Create $DIR1/$tfile failed"
+
+	dd if=/dev/zero of=$DIR1/$tfile bs=1k count=1 conv=notrunc ||
+		error "dd $DIR1/$tfile failed"
 
 	# delay glimpse so that layout has changed when glimpse finish
 #define OBD_FAIL_GLIMPSE_DELAY 0x1404
-	$LCTL set_param fail_loc=0x1404
+	$LCTL set_param fail_loc=0x1404 fail_val=4
 	stat -c %s $DIR2/$tfile |tee $tmpfile &
 	local pid=$!
-	sleep 1
+	sleep 0.2
 
-	# create layout of testing file
-	dd if=/dev/zero of=$DIR1/$tfile bs=1k count=1 conv=notrunc >/dev/null ||
+	# extend layout of testing file
+	dd if=/dev/zero of=$DIR1/$tfile bs=1M count=1 seek=2 conv=notrunc ||
 		error "dd $DIR1/$tfile failed"
 
 	wait $pid
 	local fsize=$(cat $tmpfile)
 
-	[ x$fsize = x1024 ] || error "file size is $fsize, should be 1024"
+	[ x$fsize = x3145728 ] || error "file size is $fsize, should be 3145728"
 
 	rm -f $DIR1/$tfile $tmpfile
 }
@@ -2625,6 +3014,27 @@ test_51d() {
 }
 run_test 51d "layout lock: losing layout lock should clean up memory map region"
 
+test_51e() {
+	local pid
+
+	$MULTIOP $DIR/$tfile oO_CREAT:O_RDWR:eW_E+eUc &
+	pid=$!
+	sleep 1
+
+	$LFS getstripe $DIR2/$tfile
+	kill -USR1 $pid
+	wait $pid || error "multiop failed"
+
+	$MULTIOP $DIR/$tfile oO_RDONLY:eR_E+eUc &
+	pid=$!
+	sleep 1
+
+	$LFS getstripe $DIR2/$tfile
+	kill -USR1 $pid
+	wait $pid || error "multiop failed"
+}
+run_test 51e "lfs getstripe does not break leases, part 2"
+
 test_54_part1()
 {
 	echo "==> rename vs getattr vs setxattr should not deadlock"
@@ -2778,9 +3188,8 @@ test_55d()
 run_test 55d "rename file vs link"
 
 test_60() {
-	local MDSVER=$(lustre_build_version $SINGLEMDS)
-	[ $(version_code $MDSVER) -lt $(version_code 2.3.0) ] &&
-		skip "MDS version $MDSVER must be >= 2.3.0" && return 0
+	[ $MDS1_VERSION -lt $(version_code 2.3.0) ] &&
+		skip "MDS version must be >= 2.3.0"
 
 	# Create a file
 	test_mkdir $DIR1/$tdir
@@ -2866,22 +3275,19 @@ test_70b() { # LU-2781
 run_test 70b "remove files after calling rm_entry"
 
 test_71a() {
-	local server_version=$(lustre_version_code $SINGLEMDS)
-
-	[[ $server_version -lt $(version_code 2.1.6) ]] &&
-		skip "Need MDS version at least 2.1.6" && return
+	[[ "$MDS1_VERSION" -lt $(version_code 2.1.6) ]] &&
+		skip "Need MDS version at least 2.1.6"
 
 	# Patch not applied to 2.2 and 2.3 branches
-	[[ $server_version -ge $(version_code 2.2.0) ]] &&
-	[[ $server_version -lt $(version_code 2.4.0) ]] &&
-		skip "Need MDS version earlier than 2.2.0 or at least 2.4.0" &&
-			return
+	[[ "$MDS1_VERSION" -ge $(version_code 2.2.0) ]] &&
+	[[ "$MDS1_VERSION" -lt $(version_code 2.4.0) ]] &&
+		skip "Need MDS version earlier than 2.2.0 or at least 2.4.0"
 
 	checkfiemap --test ||
-		{ skip "checkfiemap not runnable: $?" && return; }
+		skip "checkfiemap not runnable: $?"
 	# write data this way: hole - data - hole - data
 	dd if=/dev/urandom of=$DIR1/$tfile bs=40K seek=1 count=1
-	[ "$(facet_fstype ost$(($($GETSTRIPE -i $DIR1/$tfile) + 1)))" = \
+	[ "$(facet_fstype ost$(($($LFS getstripe -i $DIR1/$tfile) + 1)))" = \
 		"zfs" ] &&
 		skip "ORI-366/LU-1941: FIEMAP unimplemented on ZFS" && return 0
 	dd if=/dev/urandom of=$DIR1/$tfile bs=40K seek=3 count=1
@@ -2910,26 +3316,23 @@ test_71a() {
 run_test 71a "correct file map just after write operation is finished"
 
 test_71b() {
-	local server_version=$(lustre_version_code $SINGLEMDS)
-
-	[[ $server_version -lt $(version_code 2.1.6) ]] &&
-		skip "Need MDS version at least 2.1.6" && return
+	[[ "$MDS1_VERSION" -lt $(version_code 2.1.6) ]] &&
+		skip "Need MDS version at least 2.1.6"
 
 	# Patch not applied to 2.2 and 2.3 branches
-	[[ $server_version -ge $(version_code 2.2.0) ]] &&
-	[[ $server_version -lt $(version_code 2.4.0) ]] &&
-		skip "Need MDS version earlier than 2.2.0 or at least 2.4.0" &&
-			return
-	[[ $OSTCOUNT -ge 2 ]] || { skip "needs >= 2 OSTs"; return; }
+	[[ "$MDS1_VERSION" -ge $(version_code 2.2.0) ]] &&
+	[[ "$MDS1_VERSION" -lt $(version_code 2.4.0) ]] &&
+		skip "Need MDS version earlier than 2.2.0 or at least 2.4.0"
+	[[ $OSTCOUNT -ge 2 ]] || skip "needs >= 2 OSTs"
 
 	checkfiemap --test ||
-		{ skip "error $?: checkfiemap failed" && return; }
+		skip "error $?: checkfiemap failed"
 
 	mkdir -p $DIR1/$tdir
 
 	$LFS setstripe -c -1 $DIR1/$tdir || error "setstripe failed"
 	dd if=/dev/urandom of=$DIR1/$tdir/$tfile bs=40K count=1
-	[ "$(facet_fstype ost$(($($GETSTRIPE -i $DIR1/$tdir/$tfile) + 1)))" = \
+	[ "$(facet_fstype ost$(($($LFS getstripe -i $DIR1/$tdir/$tfile) + 1)))" = \
 		"zfs" ] &&
 		skip "ORI-366/LU-1941: FIEMAP unimplemented on ZFS" && return 0
 	checkfiemap $DIR1/$tdir/$tfile 40960 || error "checkfiemap failed"
@@ -2997,8 +3400,8 @@ test_73() {
 run_test 73 "getxattr should not cause xattr lock cancellation"
 
 test_74() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.4.93) ] &&
-		skip "Need MDS version at least 2.4.93" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.4.93) ] &&
+		skip "Need MDS version at least 2.4.93"
 
 	dd if=/dev/zero of=$DIR1/$tfile-1 bs=1K count=1
 	dd if=/dev/zero of=$DIR1/$tfile-2 bs=1K count=1
@@ -3029,10 +3432,10 @@ test_75() {
 run_test 75 "osc: upcall after unuse lock==================="
 
 test_76() { #LU-946
-	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.5.53) ]] &&
-		skip "Need MDS version at least 2.5.53" && return
+	[[ "$MDS1_VERSION" -lt $(version_code 2.5.53) ]] &&
+		skip "Need MDS version at least 2.5.53"
 
-	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh"
 	local fcount=$((MDSCOUNT * 256))
 	declare -a fd_list
 	declare -a fid_list
@@ -3122,31 +3525,47 @@ nrs_write_read() {
 	chmod 777 $dir
 
 	do_nodes $CLIENTS $myRUNAS \
-		dd if=/dev/zero of="$dir/nrs_r_$HOSTNAME" bs=1M count=$n ||
+		dd if=/dev/zero of="$dir/nrs_r_\$HOSTNAME" bs=1M count=$n ||
 		error "dd at 0 on client failed (1)"
 
-	for ((i = 0; i < $n; i++)); do
-		do_nodes $CLIENTS $myRUNAS dd if=/dev/zero \
-			of="$dir/nrs_w_$HOSTNAME" bs=1M seek=$i count=1 ||
-			 error "dd at ${i}MB on client failed (2)" &
-		local pids_w[$i]=$!
-	done
+	do_nodes $CLIENTS $myRUNAS \
+		"declare -a pids_w;
+		for ((i = 0; i < $n; i++)); do
+			dd if=/dev/zero of=$dir/nrs_w_\$HOSTNAME bs=1M \
+seek=\\\$i count=1 conv=notrunc &
+			pids_w[\\\$i]=\\\$!;
+		done;
+		rc_w=0;
+		for ((i = 0; i < $n; i++)); do
+			wait \\\${pids_w[\\\$i]};
+			newrc=\\\$?;
+			[ \\\$newrc -gt \\\$rc_w ] && rc_w=\\\$newrc;
+		done;
+		exit \\\$rc_w" &
+	local pid_w=$!
 	do_nodes $CLIENTS sync;
 	cancel_lru_locks osc
 
-	for ((i = 0; i < $n; i++)); do
-		do_nodes $CLIENTS $myRUNAS dd if="$dir/nrs_w_$HOSTNAME" \
-			of=/dev/zero bs=1M seek=$i count=1 > /dev/null ||
-			error "dd at ${i}MB on client failed (3)" &
-		local pids_r[$i]=$!
-	done
+	do_nodes $CLIENTS $myRUNAS \
+		"declare -a pids_r;
+		for ((i = 0; i < $n; i++)); do
+			dd if=$dir/nrs_r_\$HOSTNAME bs=1M of=/dev/null \
+seek=\\\$i count=1 &
+			pids_r[\\\$i]=\\\$!;
+		done;
+		rc_r=0;
+		for ((i = 0; i < $n; i++)); do
+			wait \\\${pids_r[\\\$i]};
+			newrc=\\\$?;
+			[ \\\$newrc -gt \\\$rc_r ] && rc_r=\\\$newrc;
+		done;
+		exit \\\$rc_r" &
+	local pid_r=$!
 	cancel_lru_locks osc
 
-	for ((i = 0; i < $n; i++)); do
-		wait ${pids_w[$i]}
-		wait ${pids_r[$i]}
-	done
-	rm -rf $dir || error "rm -rf $dir failed"
+	wait $pid_w || error "dd (write) failed (2)"
+	wait $pid_r || error "dd (read) failed (3)"
+	rm -rvf $dir || error "rm -rf $dir failed"
 }
 
 test_77a() { #LU-3266
@@ -3323,7 +3742,7 @@ test_77e() {
 
 	local idis
 	local rateis
-	if [ $(lustre_version_code ost1) -ge $(version_code 2.8.54) ]; then
+	if [ "$OST1_VERSION" -ge $(version_code 2.8.54) ]; then
 		idis="nid="
 		rateis="rate="
 	fi
@@ -3379,7 +3798,7 @@ test_77f() {
 
 	local idis
 	local rateis
-	if [ $(lustre_version_code ost1) -ge $(version_code 2.8.54) ]; then
+	if [ "$OST1_VERSION" -ge $(version_code 2.8.54) ]; then
 		idis="jobid="
 		rateis="rate="
 	fi
@@ -3434,7 +3853,7 @@ test_77g() {
 
 	local idis
 	local rateis
-	if [ $(lustre_version_code ost1) -ge $(version_code 2.8.54) ]; then
+	if [ "$OST1_VERSION" -ge $(version_code 2.8.54) ]; then
 		idis="jobid="
 		rateis="rate="
 	fi
@@ -3451,8 +3870,8 @@ test_77g() {
 run_test 77g "Change TBF type directly"
 
 test_77h() {
-	[ $(lustre_version_code ost1) -ge $(version_code 2.8.55) ] ||
-		{ skip "Need OST version at least 2.8.55"; return 0; }
+	[ "$OST1_VERSION" -ge $(version_code 2.8.55) ] ||
+		skip "Need OST version at least 2.8.55"
 
 	local old_policy=$(do_facet ost1 \
 		lctl get_param ost.OSS.ost_io.nrs_policies)
@@ -3506,8 +3925,8 @@ tbf_rule_check()
 }
 
 test_77i() {
-	[ $(lustre_version_code ost1) -ge $(version_code 2.8.55) ] ||
-		{ skip "Need OST version at least 2.8.55"; return 0; }
+	[ "$OST1_VERSION" -ge $(version_code 2.8.55) ] ||
+		skip "Need OST version at least 2.8.55"
 
 	for i in $(seq 1 $OSTCOUNT)
 	do
@@ -3561,11 +3980,10 @@ run_test 77i "Change rank of TBF rule"
 test_77j() {
 	local idis
 	local rateis
-	local ost_version=$(lustre_version_code ost1)
 
-	[ $ost_version -ge $(version_code 2.9.53) ] ||
-		{ skip "Need OST version at least 2.9.53"; return 0; }
-	if [ $ost_version -ge $(version_code 2.8.60) ]; then
+	[ "$OST1_VERSION" -ge $(version_code 2.9.53) ] ||
+		skip "Need OST version at least 2.9.53"
+	if [ "$OST1_VERSION" -ge $(version_code 2.8.60) ]; then
 		idis="opcode="
 		rateis="rate="
 	fi
@@ -3617,10 +4035,10 @@ test_id() {
 }
 
 test_77ja(){
-	if [ $(lustre_version_code ost1) -lt $(version_code 2.11.50) ]; then
+	if [ "$OST1_VERSION" -lt $(version_code 2.11.50) ]; then
 		skip "Need OST version at least 2.11.50"
-		return 0
 	fi
+
 	test_id "u" "500" "5" "-u 500"
 	test_id "g" "500" "5" "-u 500 -g 500"
 }
@@ -3644,8 +4062,8 @@ cleanup_77k()
 }
 
 test_77k() {
-	[[ $(lustre_version_code ost1) -ge $(version_code 2.9.53) ]] ||
-		{ skip "Need OST version at least 2.9.53"; return 0; }
+	[[ "$OST1_VERSION" -ge $(version_code 2.9.53) ]] ||
+		skip "Need OST version at least 2.9.53"
 
 	do_nodes $(comma_list $(osts_nodes)) \
 		lctl set_param ost.OSS.ost_io.nrs_policies="tbf" \
@@ -3687,8 +4105,8 @@ test_77k() {
 
 	trap "cleanup_77k \"ext_a ext_b\" \"fifo\"" EXIT
 
-	[[ $(lustre_version_code ost1) -ge $(version_code 2.10.58) ]] ||
-		{ skip "Need OST version at least 2.10.58"; return 0; }
+	[[ "$OST1_VERSION" -ge $(version_code 2.10.58) ]] ||
+		skip "Need OST version at least 2.10.58"
 
 	do_nodes $(comma_list $(osts_nodes)) \
 		lctl set_param ost.OSS.ost_io.nrs_tbf_rule="stop\ ext_a" \
@@ -3718,8 +4136,8 @@ test_77k() {
 run_test 77k "check TBF policy with NID/JobID/OPCode expression"
 
 test_77l() {
-	[[ $(lustre_version_code ost1) -ge $(version_code 2.10.56) ]] ||
-		{ skip "Need OST version at least 2.10.56"; return 0; }
+	[[ "$OST1_VERSION" -ge $(version_code 2.10.56) ]] ||
+		skip "Need OST version at least 2.10.56"
 
 	do_facet ost1 lctl set_param ost.OSS.ost_io.nrs_policies="tbf\ nid"
 	do_facet ost1 lctl set_param ost.OSS.ost_io.nrs_policies="tbf"
@@ -3738,9 +4156,8 @@ test_77l() {
 run_test 77l "check the output of NRS policies for generic TBF"
 
 test_77m() {
-	if [ $(lustre_version_code ost1) -lt $(version_code 2.9.54) ]; then
+	if [ "$OST1_VERSION" -lt $(version_code 2.9.54) ]; then
 		skip "Need OST version at least 2.9.54"
-		return 0
 	fi
 
 	local dir=$DIR/$tdir
@@ -3790,9 +4207,8 @@ test_77m() {
 run_test 77m "check NRS Delay slows write RPC processing"
 
 test_77n() { #LU-10802
-	if [ $(lustre_version_code ost1) -lt $(version_code 2.10.58) ]; then
+	if [ "$OST1_VERSION" -lt $(version_code 2.10.58) ]; then
 		skip "Need OST version at least 2.10.58"
-		return 0
 	fi
 
 	# Configure jobid_var
@@ -4102,9 +4518,55 @@ test_81b() {
 }
 run_test 81b "rename under striped directory doesn't deadlock"
 
+test_81c() {
+	[ $MDSCOUNT -lt 4 ] && skip_env "needs >= 4 MDTs"
+	[ $MDS1_VERSION -lt $(version_code 2.13.52) ] &&
+		skip "Need MDS version at least 2.13.52"
+
+	# source is local, source parent is remote
+	$LFS mkdir -i 0 $DIR1/${tdir}_src || error "mkdir ${tdir}_src"
+	$LFS mkdir -i 1 $DIR1/${tdir}_tgt || error "mkdir ${tdir}_tgt"
+	$LFS mkdir -i 3 $DIR1/${tdir}_src/sub || error "mkdir sub"
+	$LFS mkdir -i 3 $DIR1/${tdir}_tgt/sub || error "mkdir sub"
+	stat $DIR2/${tdir}_src/sub || error "stat sub failed"
+	mv $DIR1/${tdir}_src/sub $DIR1/${tdir}_tgt/ || error "mv failed"
+	[ -f $DIR2/${tdir}_src/sub ] && error "sub should be gone"
+	rm -rf $DIR1/${tdir}_src $DIR1/${tdir}_tgt
+
+	# source is remote, source parent is local
+	$LFS mkdir -i 3 $DIR1/${tdir}_src || error "mkdir ${tdir}_src"
+	$LFS mkdir -i 1 $DIR1/${tdir}_tgt || error "mkdir ${tdir}_tgt"
+	$LFS mkdir -i 0 $DIR1/${tdir}_src/sub || error "mkdir sub"
+	$LFS mkdir -i 3 $DIR1/${tdir}_tgt/sub || error "mkdir sub"
+	stat $DIR2/${tdir}_src/sub || error "stat sub failed"
+	mv $DIR1/${tdir}_src/sub $DIR1/${tdir}_tgt/ || error "mv failed"
+	[ -f $DIR2/${tdir}_src/sub ] && error "sub should be gone"
+	rm -rf $DIR1/${tdir}_src $DIR1/${tdir}_tgt
+
+	# source and source parent are remote
+	$LFS mkdir -i 0 $DIR1/${tdir}_src || error "mkdir ${tdir}_src"
+	$LFS mkdir -i 1 $DIR1/${tdir}_tgt || error "mkdir ${tdir}_tgt"
+	mkdir $DIR1/${tdir}_src/sub || error "mkdir sub"
+	$LFS mkdir -i 3 $DIR1/${tdir}_tgt/sub || error "mkdir sub"
+	stat $DIR2/${tdir}_src/sub || error "stat sub failed"
+	mv $DIR1/${tdir}_src/sub $DIR1/${tdir}_tgt/ || error "mv failed"
+	[ -f $DIR2/${tdir}_src/sub ] && error "sub should be gone"
+	rm -rf $DIR1/${tdir}_src $DIR1/${tdir}_tgt
+
+	# source and source parent are remote, and source is remote object
+	$LFS mkdir -i 0 $DIR1/${tdir}_src || error "mkdir ${tdir}_src"
+	$LFS mkdir -i 1 $DIR1/${tdir}_tgt || error "mkdir ${tdir}_tgt"
+	$LFS mkdir -i 2 $DIR1/${tdir}_src/sub || error "mkdir sub"
+	$LFS mkdir -i 3 $DIR1/${tdir}_tgt/sub || error "mkdir sub"
+	stat $DIR2/${tdir}_src/sub || error "stat sub failed"
+	mv $DIR1/${tdir}_src/sub $DIR1/${tdir}_tgt/ || error "mv failed"
+	[ -f $DIR2/${tdir}_src/sub ] && error "sub should be gone" || true
+}
+run_test 81c "rename revoke LOOKUP lock for remote object"
+
 test_82() {
-	[[ $(lustre_version_code $SINGLEMDS) -gt $(version_code 2.6.91) ]] ||
-		{ skip "Need MDS version at least 2.6.92"; return 0; }
+	[[ "$MDS1_VERSION" -gt $(version_code 2.6.91) ]] ||
+		skip "Need MDS version at least 2.6.92"
 
 	# Client 1 creates a file.
 	multiop_bg_pause $DIR1/$tfile O_ac || error "multiop_bg_pause 1"
@@ -4159,6 +4621,31 @@ test_83() {
 }
 run_test 83 "access striped directory while it is being created/unlinked"
 
+test_84() {
+	[ $MDS1_VERSION -lt $(version_code 2.12.55) ] &&
+		skip "lustre < 2.12.55 does not contain LU-12485 fix"
+
+	local mtime
+
+	$MULTIOP $DIR/$tfile oO_RDWR:O_CREAT:O_LOV_DELAY_CREATE:c ||
+		error "create $tfile failed"
+	mtime=$(stat -c%Y $DIR/$tfile)
+	mtime=$((mtime + 200))
+
+	#define OBD_FAIL_OBD_0NLINK_RACE  0x60b
+	do_facet mds1 $LCTL set_param fail_loc=0x8000060b
+
+	touch -c -m $mtime $DIR/$tfile &
+	setattr_pid=$!
+	# sleep a while to let 'touch' run first
+	sleep 5
+	rm -f $DIR2/$tfile || error "unlink $tfile failed"
+
+	# touch may fail
+	wait $setattr_pid || true
+}
+run_test 84 "0-nlink race in lu_object_find()"
+
 test_90() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
 	local pid1
@@ -4263,29 +4750,29 @@ test_93() {
 
 	mkdir -p $DIR1/$tfile-1/
 	mkdir -p $DIR2/$tfile-2/
-	local old_rr=$(do_facet $SINGLEMDS lctl get_param -n \
-		'lod.lustre-MDT*/qos_threshold_rr' | sed -e 's/%//')
-	do_facet $SINGLEMDS lctl set_param -n \
-		'lod.lustre-MDT*/qos_threshold_rr' 100
+	local old_rr=$(do_facet $SINGLEMDS "$LCTL get_param -n \
+		lod.$FSNAME-MDT0000-*/qos_threshold_rr" | sed -e 's/%//')
+	do_facet $SINGLEMDS "$LCTL set_param -n \
+		lod.$FSNAME-MDT0000-*/qos_threshold_rr=100"
 	#define OBD_FAIL_MDS_LOV_CREATE_RACE     0x163
-	do_facet $SINGLEMDS "lctl set_param fail_loc=0x00000163"
+	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x00000163"
 
-	$SETSTRIPE -c -1 $DIR1/$tfile-1/file1 &
+	$LFS setstripe -c -1 $DIR1/$tfile-1/file1 &
 	local PID1=$!
 	sleep 1
-	$SETSTRIPE -c -1 $DIR2/$tfile-2/file2 &
+	$LFS setstripe -c -1 $DIR2/$tfile-2/file2 &
 	local PID2=$!
 	wait $PID2
 	wait $PID1
-	do_facet $SINGLEMDS "lctl set_param fail_loc=0x0"
-	do_facet $SINGLEMDS "lctl set_param -n \
-		'lod.lustre-MDT*/qos_threshold_rr' $old_rr"
+	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x0"
+	do_facet $SINGLEMDS "$LCTL set_param -n \
+		lod.$FSNAME-MDT0000-*/qos_threshold_rr=$old_rr"
 
-	$GETSTRIPE $DIR1/$tfile-1/file1
-	rc1=$($GETSTRIPE -q $DIR1/$tfile-1/file1 |
+	$LFS getstripe $DIR1/$tfile-1/file1
+	rc1=$($LFS getstripe -q $DIR1/$tfile-1/file1 |
 		awk '{if (/[0-9]/) print $1 }' | sort | uniq -d | wc -l)
-	$GETSTRIPE $DIR2/$tfile-2/file2
-	rc2=$($GETSTRIPE -q $DIR2/$tfile-2/file2 |
+	$LFS getstripe $DIR2/$tfile-2/file2
+	rc2=$($LFS getstripe -q $DIR2/$tfile-2/file2 |
 		awk '{if (/[0-9]/) print $1 }' | sort | uniq -d | wc -l)
 	echo "rc1=$rc1 and rc2=$rc2 "
 	[ $rc1 -eq 0 ] && [ $rc2 -eq 0 ] ||
@@ -4293,11 +4780,47 @@ test_93() {
 }
 run_test 93 "alloc_rr should not allocate on same ost"
 
+test_94() {
+	$LCTL set_param osc.*.idle_timeout=0
+	dd if=/dev/zero of=$DIR2/$tfile bs=4k count=2 conv=fsync
+
+	local before=$(date +%s)
+	local evict
+
+	$LCTL mark write
+#define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
+	$LCTL set_param fail_val=5 fail_loc=0x80000312
+	dd if=/dev/zero of=$DIR/$tfile conv=notrunc oflag=append bs=4k count=1 &
+	local pid=$!
+	sleep 2
+
+#define OBD_FAIL_LDLM_PAUSE_CANCEL_LOCAL 0x329
+	$LCTL set_param fail_val=6 fail_loc=0x80000329
+	$LCTL mark kill $pid
+	kill -ALRM $pid
+
+	dd if=/dev/zero of=$DIR2/$tfile conv=notrunc oflag=append bs=4k count=1
+
+	wait $pid
+	dd if=/dev/zero of=$DIR/$tfile bs=4k count=1 conv=fsync
+
+	evict=$(do_facet client $LCTL get_param \
+		osc.$FSNAME-OST*-osc-*/state |
+	    awk -F"[ [,]" '/EVICTED ]$/ { if (t<$5) {t=$5;} } END { print t }')
+
+	[ -z "$evict" ] || [[ $evict -le $before ]] ||
+		(do_facet client $LCTL get_param \
+			osc.$FSNAME-OST*-osc-*/state;
+		    error "eviction happened: $evict before:$before")
+	$LCTL set_param osc.*.idle_timeout=debug
+}
+run_test 94 "signal vs CP callback race"
+
 # Data-on-MDT tests
 test_100a() {
 	skip "Reserved for glimpse-ahead" && return
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	mkdir -p $DIR/$tdir
 
@@ -4308,21 +4831,20 @@ test_100a() {
 
 	$CHECKSTAT -t file -s 4096 $DIR/$tdir/dom || error "stat #1"
 	# first stat from server should return size data and save glimpse
-	local gls=$(lctl get_param -n mdc.*.stats | \
-		awk '/ldlm_glimpse/ {print $2}')
-	[ -z $gls ] || error "Unexpected $gls glimpse RPCs"
+	local gls=$(lctl get_param -n mdc.*.stats | grep -c ldlm_glimpse)
+	[ $gls -eq 0 ] || error "Unexpected $gls glimpse RPCs"
 	# second stat to check size is NOT cached on client without IO lock
 	$CHECKSTAT -t file -s 4096 $DIR/$tdir/dom || error "stat #2"
 
-	local gls=$(lctl get_param -n mdc.*.stats | grep ldlm_glimpse | wc -l)
-	[ "1" == "$gls" ] || error "Expect 1 glimpse RPCs but got $gls"
+	local gls=$(lctl get_param -n mdc.*.stats | grep -c ldlm_glimpse)
+	[ $gls -ge 1 ] || error "Expect glimpse RPCs but none"
 	rm -f $dom
 }
 run_test 100a "DoM: glimpse RPCs for stat without IO lock (DoM only file)"
 
 test_100b() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	mkdir -p $DIR/$tdir
 
@@ -4336,17 +4858,16 @@ test_100b() {
 	# second stat to check size is cached on client
 	$CHECKSTAT -t file -s 4096 $DIR/$tdir/dom || error "stat #2"
 
-	local gls=$(lctl get_param -n mdc.*.stats |
-			awk '/ldlm_glimpse/ {print $2}')
+	local gls=$(lctl get_param -n mdc.*.stats | grep -c ldlm_glimpse)
 	# both stats should cause no glimpse requests
-	[ -z $gls ] || error "Unexpected $gls glimpse RPCs"
+	[ $gls == 0 ] || error "Unexpected $gls glimpse RPCs"
 	rm -f $dom
 }
 run_test 100b "DoM: no glimpse RPC for stat with IO lock (DoM only file)"
 
 test_100c() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	mkdir -p $DIR/$tdir
 
@@ -4360,7 +4881,7 @@ test_100c() {
 	$CHECKSTAT -t file -s 2097152 $DIR/$tdir/dom ||
 		error "Wrong size from stat #1"
 
-	local gls=$(lctl get_param -n osc.*.stats | grep ldlm_glimpse | wc -l)
+	local gls=$(lctl get_param -n osc.*.stats | grep -c ldlm_glimpse)
 	[ $gls -eq 0 ] && error "Expect OST glimpse RPCs but got none"
 
 	rm -f $dom
@@ -4368,8 +4889,8 @@ test_100c() {
 run_test 100c "DoM: write vs stat without IO lock (combined file)"
 
 test_100d() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	mkdir -p $DIR/$tdir
 
@@ -4385,16 +4906,38 @@ test_100d() {
 	$CHECKSTAT -t file -s 4096 $DIR/$tdir/dom ||
 		error "Wrong size from stat #1"
 
-	local gls=$(lctl get_param -n osc.*.stats | grep ldlm_glimpse | wc -l)
+	local gls=$(lctl get_param -n osc.*.stats | grep -c ldlm_glimpse)
 	[ $gls -eq 0 ] && error "Expect OST glimpse but got none"
 
 	rm -f $dom
 }
 run_test 100d "DoM: write+truncate vs stat without IO lock (combined file)"
 
+test_100e() {
+	[ "$MDS1_VERSION" -lt $(version_code 2.11.50) ] &&
+		skip "Need MDS version at least 2.11.50"
+
+	local dom=$DIR/$tdir/dom
+	local dom2=$DIR2/$tdir/dom
+	mkdir -p $DIR/$tdir
+
+	$LFS setstripe -E 1024K -L mdt $DIR/$tdir
+
+	cancel_lru_locks mdc
+	dd if=/dev/urandom of=$dom bs=12000 count=1
+	$TRUNCATE $dom2 6000
+	cancel_lru_locks mdc
+	lctl set_param -n mdc.*.stats=clear
+	# expect read-on-open to return all data before write
+	cat /etc/hosts >> $dom
+	local read=$(lctl get_param -n mdc.*.stats | grep -c ost_read)
+	[[ $read -eq 0 ]] || error "Unexpected $read READ RPCs"
+}
+run_test 100e "DoM: read on open and file size"
+
 test_101a() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	$LFS setstripe -E 1024K -L mdt -E EOF $DIR1/$tfile
 	# to get layout
@@ -4412,14 +4955,14 @@ test_101a() {
 	lctl set_param -n mdc.*.stats=clear
 	rm $DIR2/$tfile || error "Unlink fails"
 
-	local writes=$(lctl get_param -n mdc.*.stats | grep ost_write | wc -l)
+	local writes=$(lctl get_param -n mdc.*.stats | grep -c ost_write)
 	[ $writes -eq 0 ] || error "Found WRITE RPC but expect none"
 }
 run_test 101a "Discard DoM data on unlink"
 
 test_101b() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	$LFS setstripe -E 1024K -L mdt -E EOF $DIR1/$tfile
 	touch $DIR1/${tfile}_2
@@ -4437,14 +4980,14 @@ test_101b() {
 	lctl set_param -n mdc.*.stats=clear
 	mv $DIR2/${tfile}_2 $DIR2/$tfile || error "Rename fails"
 
-	local writes=$(lctl get_param -n mdc.*.stats | grep ost_write | wc -l)
+	local writes=$(lctl get_param -n mdc.*.stats | grep -c ost_write)
 	[ $writes -eq 0 ] || error "Found WRITE RPC but expect none"
 }
 run_test 101b "Discard DoM data on rename"
 
 test_101c() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.10.55) ] &&
-		skip "Need MDS version at least 2.10.55" && return
+	[ "$MDS1_VERSION" -lt $(version_code 2.10.55) ] &&
+		skip "Need MDS version at least 2.10.55"
 
 	$LFS setstripe -E 1024K -L mdt -E EOF $DIR1/$tfile
 	# to get layout
@@ -4464,11 +5007,396 @@ test_101c() {
 	rm $DIR2/$tfile > /dev/null || error "Unlink fails for opened file"
 	kill -USR1 $MULTIOP_PID && wait $MULTIOP_PID || error "multiop failure"
 
-	local writes=$(lctl get_param -n mdc.*.stats | grep ost_write | wc -l)
+	local writes=$(lctl get_param -n mdc.*.stats | grep -c ost_write)
 	[ $writes -eq 0 ] || error "Found WRITE RPC but expect none"
 }
 run_test 101c "Discard DoM data on close-unlink"
 
+# test to verify file handle related system calls
+# (name_to_handle_at/open_by_handle_at)
+# The new system calls are supported in glibc >= 2.14.
+
+# test to verify we can open by handle an unlinked file from > 1 client
+# This test opens the file normally on $DIR1, which is on one mount, and then
+# opens it by handle on $DIR2, which is on a different mount.
+test_102() {
+	[ "$MDS1_VERSION" -lt $(version_code 2.11.57) ] &&
+		skip "Needs MDS version 2.11.57 or later"
+
+	echo "Test file_handle syscalls" > $DIR/$tfile ||
+		error "write failed"
+	check_fhandle_syscalls $DIR/$tfile $DIR2 ||
+		error "check_fhandle_syscalls failed"
+	rm -f $DIR2/$tfile
+}
+run_test 102 "Test open by handle of unlinked file"
+
+# Compare file size between first & second mount, ensuring the client correctly
+# glimpses even with unused speculative locks - LU-11670
+test_103() {
+	[ $OST1_VERSION -lt $(version_code 2.10.50) ] &&
+		skip "Lockahead needs OST version at least 2.10.50"
+
+	local locktest=23
+
+	test_mkdir -p $DIR/$tdir
+
+	# Force file on to OST0
+	$LFS setstripe -i 0 $DIR/$tdir
+
+	# Do not check multiple locks on glimpse
+	# OBD_FAIL_OSC_NO_SIZE_DATA 0x415
+	$LCTL set_param fail_loc=0x415
+
+	# Delay write commit by 2 seconds to guarantee glimpse wins race
+	# The same fail_loc is used on client & server so it can work in the
+	# single node sanity setup
+	do_facet ost1 $LCTL set_param fail_loc=0x415 fail_val=2
+
+	echo "Incorrect size expected (no glimpse fix):"
+	lockahead_test -d $DIR/$tdir -D $DIR2/$tdir -t $locktest -f $tfile
+	rc=$?
+	if [ $rc -eq 0 ]; then
+		echo "This doesn't work 100%, but this is just reproducing the bug, not testing the fix, so OK to not fail test."
+	fi
+
+	# guarantee write commit timeout has expired
+	sleep 2
+
+	# Clear fail_loc on client
+	$LCTL set_param fail_loc=0
+
+	# Delay write commit by 2 seconds to guarantee glimpse wins race
+	# OBD_FAIL_OST_BRW_PAUSE_BULK 0x214
+	do_facet ost1 $LCTL set_param fail_loc=0x214 fail_val=2
+
+	# Write commit is still delayed by 2 seconds
+	lockahead_test -d $DIR/$tdir -D $DIR2/$tdir -t $locktest -f $tfile
+	rc=$?
+	[ $rc -eq 0 ] || error "Lockahead test$locktest failed, $rc"
+
+	# guarantee write commit timeout has expired
+	sleep 2
+
+	rm -f $DIR/$tfile || error "unable to delete $DIR/$tfile"
+}
+run_test 103 "Test size correctness with lockahead"
+
+get_stat_xtimes()
+{
+	local xtimes
+
+	xtimes=$(stat -c "%X %Y %Z" $DIR/$tfile)
+
+	echo ${xtimes[*]}
+}
+
+get_mdt_xtimes()
+{
+	local mdtdev=$1
+	local output
+	local xtimes
+
+	output=$(do_facet mds1 "$DEBUGFS -c -R 'stat ROOT/$tfile' $mdtdev")
+	((xtimes[0]=$(awk -F ':' /atime/'{ print $2 }' <<< "$output")))
+	((xtimes[1]=$(awk -F ':' /mtime/'{ print $2 }' <<< "$output")))
+	((xtimes[2]=$(awk -F ':' /ctime/'{ print $2 }' <<< "$output")))
+
+	echo ${xtimes[*]}
+}
+
+check_mdt_xtimes()
+{
+	local mdtdev=$1
+	local xtimes=($(get_stat_xtimes))
+	local mdt_xtimes=($(get_mdt_xtimes $mdtdev))
+
+	echo "STAT a|m|ctime ${xtimes[*]}"
+	echo "MDT a|m|ctime ${mdt_xtimes[*]}"
+	[[ ${xtimes[0]} == ${mdt_xtimes[0]} ]] ||
+		error "$DIR/$tfile atime (${xtimes[0]}:${mdt_xtimes[0]}) diff"
+	[[ ${xtimes[1]} == ${mdt_xtimes[1]} ]] ||
+		error "$DIR/$tfile mtime (${xtimes[1]}:${mdt_xtimes[1]}) diff"
+	[[ ${xtimes[2]} == ${mdt_xtimes[2]} ]] ||
+		error "$DIR/$tfile ctime (${xtimes[2]}:${mdt_xtimes[2]}) diff"
+}
+
+test_104() {
+	[ "$mds1_FSTYPE" == "ldiskfs" ] || skip_env "ldiskfs only test"
+	[ $MDS1_VERSION -lt $(version_code 2.12.4) ] &&
+		skip "Need MDS version at least 2.12.4"
+
+	local pid
+	local mdtdev=$(mdsdevname ${SINGLEMDS//mds/})
+	local atime_diff=$(do_facet $SINGLEMDS \
+		lctl get_param -n mdd.*MDT0000*.atime_diff)
+
+	do_facet $SINGLEMDS \
+		lctl set_param -n mdd.*MDT0000*.atime_diff=0
+
+	stack_trap "do_facet $SINGLEMDS \
+		lctl set_param -n mdd.*MDT0000*.atime_diff=$atime_diff" EXIT
+
+	dd if=/dev/zero of=$DIR/$tfile bs=1k count=1 conv=notrunc
+	check_mdt_xtimes $mdtdev
+	sleep 2
+
+	dd if=/dev/zero of=$DIR/$tfile bs=1k count=1 conv=notrunc
+	check_mdt_xtimes $mdtdev
+	sleep 2
+	$MULTIOP $DIR2/$tfile Oz8192w8192_c &
+	pid=$!
+	sleep 2
+	dd if=/dev/zero of=$DIR/$tfile bs=1k count=1 conv=notrunc
+	sleep 2
+	kill -USR1 $pid && wait $pid || error "multiop failure"
+	check_mdt_xtimes $mdtdev
+
+	local xtimes
+	local mdt_xtimes
+
+	# Verify mtime/ctime is NOT upated on MDS when there is no modification
+	# on the client side
+	xtimes=($(get_stat_xtimes))
+	$MULTIOP $DIR/$tfile O_c &
+	pid=$!
+	sleep 2
+	kill -USR1 $pid && wait $pid || error "multiop failure"
+	mdt_xtimes=($(get_mdt_xtimes $mdtdev))
+	[[ ${xtimes[1]} == ${mdt_xtimes[1]} ]] ||
+		error "$DIR/$tfile mtime (${xtimes[1]}:${mdt_xtimes[1]}) diff"
+	[[ ${xtimes[2]} == ${mdt_xtimes[2]} ]] ||
+		error "$DIR/$tfile ctime (${xtimes[2]}:${mdt_xtimes[2]}) diff"
+	check_mdt_xtimes $mdtdev
+
+	sleep 2
+	# Change ctime via chmod
+	$MULTIOP $DIR/$tfile o_tc &
+	pid=$!
+	sleep 2
+	kill -USR1 $pid && wait $pid || error "multiop failure"
+	check_mdt_xtimes $mdtdev
+}
+run_test 104 "Verify that MDS stores atime/mtime/ctime during close"
+
+test_105() {
+	test_mkdir -p $DIR/$tdir
+	echo test > $DIR/$tdir/$tfile
+	$LCTL set_param fail_loc=0x416
+	cancel_lru_locks osc & sleep 1
+	fsize1=$(stat -c %s $DIR2/$tdir/$tfile)
+	wait
+	[[ $fsize1 = 5 ]] ||  error "Glimpse returned wrong file size $fsize1"
+}
+run_test 105 "Glimpse and lock cancel race"
+
+test_106a() {
+	[ "$mds1_FSTYPE" == "ldiskfs" ] && statx_supported ||
+		skip_env "Test only for ldiskfs and statx() supported"
+
+	local btime
+	local mdt_btime
+	local output
+	local mdtdev=$(mdsdevname ${SINGLEMDS//mds/})
+
+	dd if=/dev/zero of=$DIR/$tfile bs=1k count=1 conv=notrunc
+	btime=$($STATX -c %W $DIR/$tfile)
+	output=$(do_facet mds1 "$DEBUGFS -c -R 'stat ROOT/$tfile' $mdtdev")
+	echo $output
+	((mdt_btime=$(awk -F ':' /crtime/'{ print $2 }' <<< "$output")))
+	[[ $btime == $mdt_btime ]] ||
+		error "$DIR/$tfile btime ($btime:$mdt_btime) diff"
+
+}
+run_test 106a "Verify the btime via statx()"
+
+test_106b() {
+	statx_supported || skip_env "statx() only test"
+
+	local rpcs_before
+	local rpcs_after
+
+	$LFS setstripe -c 1 $DIR/$tfile || error "$DIR/$tfile setstripe failed"
+	dd if=/dev/zero of=$DIR/$tfile bs=1k count=1 conv=notrunc
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	$STATX $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $((rpcs_before + 1)) ] ||
+		error "$STATX should send 1 glimpse RPC to $OSC"
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	# %n: FILENAME; %i: STATX_INO; %A STATX_MODE; %h STATX_NLINK;
+	# %u: STATX_UID; %g: STATX_GID; %W STATX_BTIME; %X STATX_ATIME;
+	# %Z: STATX_CTIME
+	$STATX -c "%n %i %A %h %u %g %W %X %Z" $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $rpcs_before ] ||
+		error "$STATX should not send glimpse RPCs to $OSC"
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	$STATX --cached=always $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $rpcs_before ] ||
+		error "$STATX should not send glimpse RPCs to $OSC"
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	$STATX -c %Y $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $((rpcs_before + 1)) ] ||
+		error "$STATX -c %Y should send 1 glimpse RPC to $OSC"
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	$STATX -c %s $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $((rpcs_before + 1)) ] ||
+		error "$STATX -c %s should send 1 glimpse RPC to $OSC"
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	$STATX -c %b $DIR/$tfile
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $((rpcs_before + 1)) ] ||
+		error "$STATX -c %b should send 1 glimpse RPC to $OSC"
+}
+run_test 106b "Glimpse RPCs test for statx"
+
+test_106c() {
+	statx_supported || skip_env "statx() only test"
+
+	local mask
+
+	touch $DIR/$tfile
+	# Mask supported in stx_attributes by Lustre is
+	# STATX_ATTR_IMMUTABLE(0x10) | STATX_ATTR_APPEND(0x20) : (0x30).
+	mask=$($STATX -c %p $DIR/$tfile)
+	[[ $mask == "30" ]] ||
+		error "supported stx_attributes: got '$mask', expected '30'"
+	chattr +i $DIR/$tfile || error "chattr +i $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "10" ]] ||
+		error "got immutable flags '$mask', expected '10'"
+	chattr -i $DIR/$tfile || error "chattr -i $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "0" ]] || error "got flags '$mask', expected '0'"
+	chattr +a $DIR/$tfile || error "chattr +a $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "20" ]] || error "got flags '$mask', expected '20'"
+	chattr -a $DIR/$tfile || error "chattr -a $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "0" ]] || error "got flags '$mask', expected '0'"
+	chattr +ia $DIR/$tfile || error "chattr +ia $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "30" ]] || error "got flags '$mask', expected '30'"
+	chattr -ia $DIR/$tfile || error "chattr -ia $DIR/$tfile failed"
+	mask=$($STATX -c %r $DIR/$tfile)
+	[[ $mask == "0" ]] || error "got flags '$mask', expected '0'"
+}
+run_test 106c "Verify statx attributes mask"
+
+test_107a() { # LU-1031
+	dd if=/dev/zero of=$DIR1/$tfile bs=1M count=10
+	local gid1=14091995
+	local gid2=16022000
+
+	$LFS getstripe $DIR1/$tfile
+
+	multiop_bg_pause $DIR1/$tfile OG${gid1}_g${gid1}c || return 1
+	local MULTIPID1=$!
+	multiop_bg_pause $DIR2/$tfile O_G${gid2}r10g${gid2}c || return 2
+	local MULTIPID2=$!
+	kill -USR1 $MULTIPID2
+	sleep 2
+	if [[ $(ps h -o comm -p $MULTIPID2) == "" ]]; then
+		error "First grouplock does not block second one"
+	else
+		echo "First grouplock blocks second one"
+	fi
+	kill -USR1 $MULTIPID1
+	wait $MULTIPID1
+	wait $MULTIPID2
+}
+run_test 107a "Basic grouplock conflict"
+
+test_107b() {
+	dd if=/dev/zero of=$DIR1/$tfile bs=1M count=10
+	local gid1=14091995
+	local gid2=16022000
+
+	$LFS getstripe $DIR1/$tfile
+
+	multiop_bg_pause $DIR1/$tfile OG${gid1}_g${gid1}c || return 1
+	local MULTIPID1=$!
+	multiop $DIR2/$tfile Or10c &
+	local MULTIPID2=$!
+	sleep 2
+
+	if [[ $(ps h -o comm -p $MULTIPID2) == "" ]]; then
+		error "Grouplock does not block IO"
+	else
+		echo "Grouplock blocks IO"
+	fi
+
+	multiop $DIR2/$tfile OG${gid2}_g${gid2}c &
+	local MULTIPID3=$!
+	sleep 2
+	if [[ $(ps h -o comm -p $MULTIPID3) == "" ]]; then
+		error "First grouplock does not block second one"
+	else
+		echo "First grouplock blocks second one"
+	fi
+
+	kill -USR1 $MULTIPID1
+	sleep 2
+
+	if [[ $(ps h -o comm -p $MULTIPID3) == "" ]]; then
+		error "Second grouplock thread disappeared"
+	fi
+
+	if [[ $(ps h -o comm -p $MULTIPID2) == "" ]]; then
+		error "Second grouplock does not block IO"
+	else
+		echo "Second grouplock blocks IO"
+	fi
+
+	kill -USR1 $MULTIPID3
+	wait $MULTIPID1
+	wait $MULTIPID2
+	wait $MULTIPID3
+}
+run_test 107b "Grouplock is added to the head of waiting list"
+
+test_108a() {
+	local offset
+
+	$LFS setstripe -E 1M -c 1 -E -1 $DIR1/$tfile ||
+		error "Create $DIR1/$tfile failed"
+
+	dd if=/dev/zero of=$DIR1/$tfile bs=10000 count=1 ||
+		error "dd $DIR1/$tfile failed"
+	offset=$(lseek_test -d 5000 $DIR2/$tfile)
+	[[ $offset == 5000 ]] || error "offset $offset != 5000"
+
+	$TRUNCATE $DIR1/$tfile 2000
+	offset=$(lseek_test -l 1000 $DIR2/$tfile)
+	[[ $offset == 2000 ]] || error "offset $offset != 2000"
+
+	#define OBD_FAIL_OSC_DELAY_IO 0x414
+	$LCTL set_param fail_val=4 fail_loc=0x80000414
+	dd if=/dev/zero of=$DIR1/$tfile count=1 bs=8M conv=notrunc oflag=dsync &
+	local pid=$!
+	sleep 2
+
+	offset=$(lseek_test -l 8000 $DIR2/$tfile)
+	wait $pid
+	[[ $offset == 8388608 ]] || error "offset $offset != 8388608"
+}
+run_test 108a "lseek: parallel updates"
+
 log "cleanup: ======================================================"
 
 # kill and wait in each test only guarentee script finish, but command in script