X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftests%2Fsanity.sh;h=3cb0d6bdd156a829b89756d72399d5de577e5e04;hp=541fae3408cd5d0df3cbb6182f65d33b0cc00080;hb=08892438473f3188de3dc7f76b0ce433eaef4367;hpb=59a3d7237df82ac2ce14b6779577584163f9122b

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 541fae3..3cb0d6b 100755
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -31,8 +31,8 @@ GRANT_CHECK_LIST=${GRANT_CHECK_LIST:-""}
 export PARALLEL=${PARALLEL:-"no"}
 
 TRACE=${TRACE:-""}
-LUSTRE_TESTS_API_DIR=${LUSTRE_TESTS_API_DIR:-${LUSTRE}/tests/clientapi}
 LUSTRE=${LUSTRE:-$(dirname $0)/..}
+LUSTRE_TESTS_API_DIR=${LUSTRE_TESTS_API_DIR:-${LUSTRE}/tests/clientapi}
 . $LUSTRE/tests/test-framework.sh
 init_test_env $@
 
@@ -41,8 +41,8 @@ init_logging
 ALWAYS_EXCEPT="$SANITY_EXCEPT "
 # bug number for skipped test: LU-9693 LU-6493 LU-9693
 ALWAYS_EXCEPT+="               42a     42b     42c "
-# bug number:    LU-8411 LU-9054
-ALWAYS_EXCEPT+=" 407     312 "
+# bug number:    LU-8411 LU-9054 LU-13314
+ALWAYS_EXCEPT+=" 407     312	56ob"
 
 if $SHARED_KEY; then
 	# bug number:    LU-9795 LU-9795 LU-9795 LU-9795
@@ -75,7 +75,7 @@ if (( $LINUX_VERSION_CODE >= $(version_code 4.18.0) &&
 	ALWAYS_EXCEPT+=" 411"
 fi
 
-#                                  5          12          (min)"
+#                                  5          12     8   12  (min)"
 [ "$SLOW" = "no" ] && EXCEPT_SLOW="27m 64b 68 71 115 135 136 300o"
 
 if [ "$mds1_FSTYPE" = "zfs" ]; then
@@ -1635,6 +1635,28 @@ test_27ce() {
 }
 run_test 27ce "more stripes than OSTs with -o"
 
+test_27cf() {
+	local osp_proc="osp.$FSNAME-OST0000-osc-MDT000*.active"
+	local pid=0
+
+	test_mkdir -p $DIR/$tdir || error "failed to mkdir $DIR/$tdir"
+	do_facet $SINGLEMDS "$LCTL set_param -n $osp_proc=0"
+	stack_trap "do_facet $SINGLEMDS $LCTL set_param -n $osp_proc=1" EXIT
+	wait_update_facet $SINGLEMDS "$LCTL get_param -n $osp_proc | grep 1" ||
+		error "failed to set $osp_proc=0"
+
+	$LFS setstripe -o 0 $DIR/$tdir/$tfile &
+	pid=$!
+	sleep 1
+	do_facet $SINGLEMDS "$LCTL set_param -n $osp_proc=1"
+	wait_update_facet $SINGLEMDS "$LCTL get_param -n $osp_proc | grep 0" ||
+		error "failed to set $osp_proc=1"
+	wait $pid
+	[[ $pid -ne 0 ]] ||
+		error "should return error due to $osp_proc=0"
+}
+run_test 27cf "'setstripe -o' on inactive OSTs should return error"
+
 test_27d() {
 	test_mkdir $DIR/$tdir
 	$LFS setstripe -c 0 -i -1 -S 0 $DIR/$tdir/$tfile ||
@@ -1758,17 +1780,24 @@ run_test 27m "create file while OST0 was full"
 # OSCs keep a NOSPC flag that will be reset after ~5s (qos_maxage)
 # if the OST isn't full anymore.
 reset_enospc() {
-	local OSTIDX=${1:-""}
+	local ostidx=${1:-""}
+	local delay
+	local ready
+	local get_prealloc
 
 	local list=$(comma_list $(osts_nodes))
-	[ "$OSTIDX" ] && list=$(facet_host ost$((OSTIDX + 1)))
+	[ "$ostidx" ] && list=$(facet_host ost$((ostidx + 1)))
 
 	do_nodes $list lctl set_param fail_loc=0
-	sync	# initiate all OST_DESTROYs from MDS to OST
-	sleep_maxage
+	wait_delete_completed	# initiate all OST_DESTROYs from MDS to OST
+	delay=$(do_facet $SINGLEMDS lctl get_param -n lov.*.qos_maxage |
+		awk '{print $1 * 2;exit;}')
+	get_prealloc="$LCTL get_param -n osc.*MDT*.prealloc_status |
+			grep -v \"^0$\""
+	wait_update_facet $SINGLEMDS "$get_prealloc" "" $delay
 }
 
-exhaust_precreations() {
+__exhaust_precreations() {
 	local OSTIDX=$1
 	local FAILLOC=$2
 	local FAILIDX=${3:-$OSTIDX}
@@ -1799,14 +1828,19 @@ exhaust_precreations() {
 	createmany -o $DIR/$tdir/${OST}/f $next_id $((last_id - next_id + 2))
 	do_facet $mfacet lctl get_param osp.$mdtosc_proc2.prealloc*
 	do_facet $ofacet lctl set_param fail_loc=$FAILLOC
+}
+
+exhaust_precreations() {
+	__exhaust_precreations $1 $2 $3
 	sleep_maxage
 }
 
 exhaust_all_precreations() {
 	local i
 	for (( i=0; i < OSTCOUNT; i++ )) ; do
-		exhaust_precreations $i $1 -1
+		__exhaust_precreations $i $1 -1
 	done
+	sleep_maxage
 }
 
 test_27n() {
@@ -2578,6 +2612,7 @@ test_27G() { #LU-10629
 	local ostrange="0 0 1"
 
 	test_mkdir $DIR/$tdir
+	touch $DIR/$tdir/$tfile.nopool
 	pool_add $POOL || error "pool_add failed"
 	pool_add_targets $POOL $ostrange || error "pool_add_targets failed"
 	$LFS setstripe -p $POOL $DIR/$tdir
@@ -2585,14 +2620,18 @@ test_27G() { #LU-10629
 	local pool=$($LFS getstripe -p $DIR/$tdir)
 
 	[ "$pool" = "$POOL" ] || error "Striping failed got '$pool' not '$POOL'"
+	touch $DIR/$tdir/$tfile.default
+	$LFS setstripe -E 1M --pool $POOL -c 1 -E eof -c 1 $DIR/$tdir/$tfile.pfl
+	$LFS find $DIR/$tdir -type f --pool $POOL
+	local found=$($LFS find $DIR/$tdir -type f --pool $POOL | wc -l)
+	[[ "$found" == "2" ]] ||
+		error "found $found != 2 files in '$DIR/$tdir' in '$POOL'"
 
 	$LFS setstripe -d $DIR/$tdir
 
-	pool=$($LFS getstripe -p $DIR/$tdir)
-
-	rmdir $DIR/$tdir
+	pool=$($LFS getstripe -p -d $DIR/$tdir)
 
-	[ -z "$pool" ] || error "'$pool' is not empty"
+	[[ "$pool" != "$POOL" ]] || error "$DIR/$tdir is still '$pool'"
 }
 run_test 27G "Clear OST pool from stripe"
 
@@ -3053,7 +3092,7 @@ run_test 30b "execute binary from Lustre as non-root ==========="
 test_30c() { # b=22376
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
-	cp `which ls` $DIR || cp /bin/ls $DIR
+	cp $(which ls) $DIR || cp /bin/ls $DIR
 	chmod a-rw $DIR/ls
 	cancel_lru_locks mdc
 	cancel_lru_locks osc
@@ -3062,6 +3101,22 @@ test_30c() { # b=22376
 }
 run_test 30c "execute binary from Lustre without read perms ===="
 
+test_30d() {
+	cp $(which dd) $DIR || error "failed to copy dd to $DIR/dd"
+
+	for i in {1..10}; do
+		$DIR/dd bs=1M count=128 if=/dev/zero of=$DIR/$tfile &
+		local PID=$!
+		sleep 1
+		$LCTL set_param ldlm.namespaces.*MDT*.lru_size=clear
+		wait $PID || error "executing dd from Lustre failed"
+		rm -f $DIR/$tfile
+	done
+
+	rm -f $DIR/dd
+}
+run_test 30d "execute binary from Lustre while clear locks"
+
 test_31a() {
 	$OPENUNLINK $DIR/f31 $DIR/f31 || error "openunlink failed"
 	$CHECKSTAT -a $DIR/f31 || error "$DIR/f31 exists"
@@ -3749,6 +3804,46 @@ test_33g() {
 }
 run_test 33g "nonroot user create already existing root created file"
 
+test_33h() {
+	[ $MDSCOUNT -lt 2 ] && skip_env "needs >= 2 MDTs"
+	[ $MDS1_VERSION -lt $(version_code 2.13.50) ] &&
+		skip "Need MDS version at least 2.13.50"
+
+	test_mkdir -c $MDSCOUNT -H crush $DIR/$tdir ||
+		error "mkdir $tdir failed"
+	touch $DIR/$tdir/$tfile || error "touch $tfile failed"
+
+	local index=$($LFS getstripe -m $DIR/$tdir/$tfile)
+	local index2
+
+	for fname in $DIR/$tdir/$tfile.bak \
+		     $DIR/$tdir/$tfile.SAV \
+		     $DIR/$tdir/$tfile.orig \
+		     $DIR/$tdir/$tfile~; do
+		touch $fname  || error "touch $fname failed"
+		index2=$($LFS getstripe -m $fname)
+		[ $index -eq $index2 ] ||
+			error "$fname MDT index mismatch $index != $index2"
+	done
+
+	local failed=0
+	for i in {1..50}; do
+		for fname in $(mktemp -u $DIR/$tdir/.$tfile.XXXXXX) \
+			     $(mktemp $DIR/$tdir/$tfile.XXXXXXXX); do
+			touch $fname  || error "touch $fname failed"
+			index2=$($LFS getstripe -m $fname)
+			if [[ $index != $index2 ]]; then
+				failed=$((failed + 1))
+				echo "$fname MDT index mismatch $index != $index2"
+			fi
+		done
+	done
+	echo "$failed MDT index mismatches"
+	(( failed < 4 )) || error "MDT index mismatch $failed times"
+
+}
+run_test 33h "temp file is located on the same MDT as target"
+
 TEST_34_SIZE=${TEST_34_SIZE:-2000000000000}
 test_34a() {
 	rm -f $DIR/f34
@@ -4468,6 +4563,49 @@ test_39p() {
 }
 run_test 39p "remote directory cached attributes updated after create ========"
 
+test_39r() {
+	[ $OST1_VERSION -ge $(version_code 2.13.52) ] ||
+		skip "no atime update on old OST"
+	if [ "$ost1_FSTYPE" != ldiskfs ]; then
+		skip_env "ldiskfs only test"
+	fi
+
+	local saved_adiff
+	saved_adiff=$(do_facet ost1 \
+		lctl get_param -n obdfilter.*OST0000.atime_diff)
+	stack_trap "do_facet ost1 \
+		lctl set_param obdfilter.*.atime_diff=$saved_adiff"
+
+	do_facet ost1 "lctl set_param obdfilter.*.atime_diff=5"
+
+	$LFS setstripe -i 0 $DIR/$tfile
+	dd if=/dev/zero of=$DIR/$tfile bs=4k count=1 ||
+		error "can't write initial file"
+	cancel_lru_locks osc
+
+	# exceed atime_diff and access file
+	sleep 6
+	dd if=$DIR/$tfile of=/dev/null || error "can't udpate atime"
+
+	local atime_cli=$(stat -c %X $DIR/$tfile)
+	echo "client atime: $atime_cli"
+	# allow atime update to be written to device
+	do_facet ost1 "$LCTL set_param -n osd*.*OST*.force_sync 1"
+	sleep 5
+
+	local ostdev=$(ostdevname 1)
+	local fid=($(lfs getstripe -y $DIR/$tfile |
+			awk '/l_fid:/ { print $2 }' | tr ':' ' '))
+	local objpath="O/0/d$((${fid[1]} % 32))/$((${fid[1]}))"
+	local cmd="debugfs -c -R \\\"stat $objpath\\\" $ostdev"
+
+	echo "OST atime: $(do_facet ost1 "$cmd" |& grep atime)"
+	local atime_ost=$(do_facet ost1 "$cmd" |&
+			  awk -F'[: ]' '/atime:/ { print $4 }')
+	(( atime_cli == atime_ost )) ||
+		error "atime on client $atime_cli != ost $atime_ost"
+}
+run_test 39r "lazy atime update on OST"
 
 test_39q() { # LU-8041
 	local testdir=$DIR/$tdir
@@ -5503,16 +5641,24 @@ test_56c() {
 	local ost_idx=0
 	local ost_name=$(ostname_from_index $ost_idx)
 	local old_status=$(ost_dev_status $ost_idx)
+	local p="$TMP/$TESTSUITE-$TESTNAME.parameters"
 
 	[[ -z "$old_status" ]] ||
 		skip_env "OST $ost_name is in $old_status status"
 
 	do_facet ost1 $LCTL set_param -n obdfilter.$ost_name.degraded=1
-	[[ $OST1_VERSION -ge $(version_code 2.12.55) ]] && do_facet ost1 \
+	[[ $OST1_VERSION -lt $(version_code 2.12.55) ]] || do_facet ost1 \
 		$LCTL set_param -n obdfilter.$ost_name.no_precreate=1
+	if [[ $OST1_VERSION -ge $(version_code 2.12.57) ]]; then
+		save_lustre_params ost1 osd-*.$ost_name.nonrotational > $p
+		do_facet ost1 $LCTL set_param -n osd-*.$ost_name.nonrotational=1
+	fi
+
+	[[ $($LFS df -v $MOUNT |& grep -c "inactive device") -eq 0 ]] ||
+		error "$LFS df -v showing inactive devices"
 	sleep_maxage
 
-	local new_status=$(ost_dev_status $ost_idx)
+	local new_status=$(ost_dev_status $ost_idx $MOUNT -v)
 
 	[[ "$new_status" =~ "D" ]] ||
 		error "$ost_name status is '$new_status', missing 'D'"
@@ -5520,18 +5666,37 @@ test_56c() {
 		[[ "$new_status" =~ "N" ]] ||
 			error "$ost_name status is '$new_status', missing 'N'"
 	fi
+	if [[ $OST1_VERSION -ge $(version_code 2.12.57) ]]; then
+		[[ "$new_status" =~ "f" ]] ||
+			error "$ost_name status is '$new_status', missing 'f'"
+	fi
 
 	do_facet ost1 $LCTL set_param -n obdfilter.$ost_name.degraded=0
-	[[ $OST1_VERSION -ge $(version_code 2.12.55) ]] && do_facet ost1 \
+	[[ $OST1_VERSION -lt $(version_code 2.12.55) ]] || do_facet ost1 \
 		$LCTL set_param -n obdfilter.$ost_name.no_precreate=0
+	[[ -z "$p" ]] && restore_lustre_params < $p || true
 	sleep_maxage
 
 	new_status=$(ost_dev_status $ost_idx)
 	[[ ! "$new_status" =~ "D" && ! "$new_status" =~ "N" ]] ||
 		error "$ost_name status is '$new_status', has 'D' and/or 'N'"
+	# can't check 'f' as devices may actually be on flash
 }
 run_test 56c "check 'lfs df' showing device status"
 
+test_56d() {
+	local mdts=$($LFS df -v $MOUNT | grep -c MDT)
+	local osts=$($LFS df -v $MOUNT | grep -c OST)
+
+	$LFS df $MOUNT
+
+	(( mdts == MDSCOUNT )) ||
+		error "lfs df -v showed $mdts MDTs, not $MDSCOUNT"
+	(( osts == OSTCOUNT )) ||
+		error "lfs df -v showed $osts OSTs, not $OSTCOUNT"
+}
+run_test 56d "'lfs df -v' prints only configured devices"
+
 NUMFILES=3
 NUMDIRS=3
 setup_56() {
@@ -5759,18 +5924,26 @@ test_newerXY_base() {
 	local negref
 
 	if [ $y == "t" ]; then
-		ref="\"$(date +"%Y-%m-%d %H:%M:%S")\""
+		if [ $x == "b" ]; then
+			ref="\"$(do_facet mds1 date +"%Y-%m-%d\ %H:%M:%S")\""
+		else
+			ref="\"$(date +"%Y-%m-%d %H:%M:%S")\""
+		fi
 	else
-		ref=$DIR/$tfile.newer
+		ref=$DIR/$tfile.newer.$x$y
 		touch $ref || error "touch $ref failed"
 	fi
 	sleep 2
 	setup_56 $dir $NUMFILES $NUMDIRS "-i0 -c1" "-i0 -c1"
 	sleep 2
 	if [ $y == "t" ]; then
-		negref="\"$(date +"%Y-%m-%d %H:%M:%S")\""
+		if [ $x == "b" ]; then
+			negref="\"$(do_facet mds1 date +"%Y-%m-%d\ %H:%M:%S")\""
+		else
+			negref="\"$(date +"%Y-%m-%d %H:%M:%S")\""
+		fi
 	else
-		negref=$DIR/$tfile.newerneg
+		negref=$DIR/$tfile.negnewer.$x$y
 		touch $negref || error "touch $negref failed"
 	fi
 
@@ -5795,6 +5968,7 @@ test_newerXY_base() {
 }
 
 test_56oc() {
+	test_newerXY_base "b" "t"
 	test_newerXY_base "a" "a"
 	test_newerXY_base "a" "m"
 	test_newerXY_base "a" "c"
@@ -5804,12 +5978,96 @@ test_56oc() {
 	test_newerXY_base "c" "a"
 	test_newerXY_base "c" "m"
 	test_newerXY_base "c" "c"
+	test_newerXY_base "b" "b"
 	test_newerXY_base "a" "t"
 	test_newerXY_base "m" "t"
 	test_newerXY_base "c" "t"
+	test_newerXY_base "b" "t"
 }
 run_test 56oc "check lfs find -newerXY work"
 
+btime_supported() {
+	local dir=$DIR/$tdir
+	local rc
+
+	mkdir -p $dir
+	touch $dir/$tfile
+	$LFS find $dir -btime -1d -type f
+	rc=$?
+	rm -rf $dir
+	return $rc
+}
+
+test_56od() {
+	[ $MDS1_VERSION -lt $(version_code 2.13.53) ] &&
+		! btime_supported && skip "btime unsupported on MDS"
+
+	[ $CLIENT_VERSION -lt $(version_code 2.13.53) ] &&
+		! btime_supported && skip "btime unsupported on clients"
+
+	local dir=$DIR/$tdir
+	local ref=$DIR/$tfile.ref
+	local negref=$DIR/$tfile.negref
+
+	mkdir $dir || error "mkdir $dir failed"
+	touch $dir/$tfile.n1 || error "touch $dir/$tfile.n1 failed"
+	touch $dir/$tfile.n2 || error "touch $dir/$tfile.n2 failed"
+	mkdir $dir/$tdir.n1 || error "mkdir $dir/$tdir.n1 failed"
+	mkdir $dir/$tdir.n2 || error "mkdir $dir/$tdir.n2 failed"
+	touch $ref || error "touch $ref failed"
+	# sleep 3 seconds at least
+	sleep 3
+
+	local before=$(do_facet mds1 date +%s)
+	local skew=$(($(date +%s) - before + 1))
+
+	if (( skew < 0 && skew > -5 )); then
+		sleep $((0 - skew + 1))
+		skew=0
+	fi
+
+	# Set the dir stripe params to limit files all on MDT0,
+	# otherwise we need to calc the max clock skew between
+	# the client and MDTs.
+	setup_56 $dir/d.btime $NUMFILES $NUMDIRS "-i0 -c1" "-i0 -c1"
+	sleep 2
+	touch $negref || error "touch $negref failed"
+
+	local cmd="$LFS find $dir -newerbb $ref ! -newerbb $negref -type f"
+	local nums=$($cmd | wc -l)
+	local expected=$(((NUMFILES + 1) * NUMDIRS))
+
+	[ $nums -eq $expected ] ||
+		error "'$cmd' wrong: found $nums, expected $expected"
+
+	cmd="$LFS find $dir -newerbb $ref ! -newerbb $negref -type d"
+	nums=$($cmd | wc -l)
+	expected=$((NUMFILES + 1))
+	[ $nums -eq $expected ] ||
+		error "'$cmd' wrong: found $nums, expected $expected"
+
+	[ $skew -lt 0 ] && return
+
+	local after=$(do_facet mds1 date +%s)
+	local age=$((after - before + 1 + skew))
+
+	cmd="$LFS find $dir -btime -${age}s -type f"
+	nums=$($cmd | wc -l)
+	expected=$(((NUMFILES + 1) * NUMDIRS))
+
+	echo "Clock skew between client and server: $skew, age:$age"
+	[ $nums -eq $expected ] ||
+		error "'$cmd' wrong: found $nums, expected $expected"
+
+	expected=$(($NUMDIRS + 1))
+	cmd="$LFS find $dir -btime -${age}s -type d"
+	nums=$($cmd | wc -l)
+	[ $nums -eq $expected ] ||
+		error "'$cmd' wrong: found $nums, expected $expected"
+	rm -f $ref $negref || error "Failed to remove $ref $negref"
+}
+run_test 56od "check lfs find -btime with units"
+
 test_56p() {
 	[ $RUNAS_ID -eq $UID ] &&
 		skip_env "RUNAS_ID = UID = $UID -- skipping"
@@ -5938,156 +6196,90 @@ test_56r() {
 }
 run_test 56r "check lfs find -size works"
 
-test_56ra() {
-	[[ $MDS1_VERSION -gt $(version_code 2.12.58) ]] ||
-		skip "MDS < 2.12.58 doesn't return LSOM data"
-	local dir=$DIR/$tdir
-
-	[[ $OSC == "mdc" ]] && skip "DoM files" && return
-
-	setup_56 $dir $NUMFILES $NUMDIRS "-c 1"
+test_56ra_sub() {
+	local expected=$1
+	local glimpses=$2
+	local cmd="$3"
 
 	cancel_lru_locks $OSC
 
 	local rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	local expected=12
-	local cmd="$LFS find -size 0 -type f -lazy $dir"
 	local nums=$($cmd | wc -l)
 
 	[ $nums -eq $expected ] ||
 		error "'$cmd' wrong: found $nums, expected $expected"
 
 	local rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find -size 0 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	$LCTL get_param osc.*.stats
-	[ $rpcs_after -eq $((rpcs_before + 12)) ] ||
-		error "'$cmd' should send 12 glimpse RPCs to OST"
 
+	if (( rpcs_before + glimpses != rpcs_after )); then
+		echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
+		$LCTL get_param osc.*.stats | grep ldlm_glimpse_enqueue
+
+		if [[ $glimpses == 0 ]]; then
+			error "'$cmd' should not send glimpse RPCs to OST"
+		else
+			error "'$cmd' should send $glimpses glimpse RPCs to OST"
+		fi
+	fi
+}
+
+test_56ra() {
+	[[ $MDS1_VERSION -gt $(version_code 2.12.58) ]] ||
+		skip "MDS < 2.12.58 doesn't return LSOM data"
+	local dir=$DIR/$tdir
+
+	[[ $OSC == "mdc" ]] && skip "DoM files" && return
+
+	setup_56 $dir $NUMFILES $NUMDIRS "-c 1"
+	# open and close all files to ensure LSOM is updated
 	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=0
-	cmd="$LFS find ! -size 0 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	$LCTL get_param mdc.*.stats
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find ! -size 0 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 12)) ] ||
-		error "'$cmd' should send 12 glimpse RPCs to OST"
+	find $dir -type f | xargs cat > /dev/null
+
+	#   expect_found  glimpse_rpcs  command_to_run
+	test_56ra_sub 12  0 "$LFS find -size 0 -type f -lazy $dir"
+	test_56ra_sub 12 12 "$LFS find -size 0 -type f $dir"
+	test_56ra_sub  0  0 "$LFS find ! -size 0 -type f -lazy $dir"
+	test_56ra_sub  0 12 "$LFS find ! -size 0 -type f $dir"
 
 	echo "test" > $dir/$tfile
 	echo "test2" > $dir/$tfile.2 && sync
 	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=1
-	cmd="$LFS find -size 5 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find -size 5 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 14)) ] ||
-		error "'$cmd' should send 14 glimpse RPCs to OST"
+	cat $dir/$tfile $dir/$tfile.2 > /dev/null
 
-	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=1
-	cmd="$LFS find -size +5 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find -size +5 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 14)) ] ||
-		error "'$cmd' should send 14 glimpse RPCs to OST"
+	test_56ra_sub  1  0 "$LFS find -size 5 -type f -lazy $dir"
+	test_56ra_sub  1 14 "$LFS find -size 5 -type f $dir"
+	test_56ra_sub  1  0 "$LFS find -size +5 -type f -lazy $dir"
+	test_56ra_sub  1 14 "$LFS find -size +5 -type f $dir"
 
-	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=2
-	cmd="$LFS find -size +0 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find -size +0 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 14)) ] ||
-		error "'$cmd' should send 14 glimpse RPCs to OST"
+	test_56ra_sub  2  0 "$LFS find -size +0 -type f -lazy $dir"
+	test_56ra_sub  2 14 "$LFS find -size +0 -type f $dir"
+	test_56ra_sub  2  0 "$LFS find ! -size -5 -type f -lazy $dir"
+	test_56ra_sub  2 14 "$LFS find ! -size -5 -type f $dir"
+	test_56ra_sub 12  0 "$LFS find -size -5 -type f -lazy $dir"
+	test_56ra_sub 12 14 "$LFS find -size -5 -type f $dir"
+}
+run_test 56ra "check lfs find -size -lazy works for data on OSTs"
 
-	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=2
-	cmd="$LFS find ! -size -5 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find ! -size -5 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 14)) ] ||
-		error "'$cmd' should send 14 glimpse RPCs to OST"
+test_56rb() {
+	local dir=$DIR/$tdir
+	local tmp=$TMP/$tfile.log
+	local mdt_idx;
 
-	cancel_lru_locks $OSC
-	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	expected=12
-	cmd="$LFS find -size -5 -type f -lazy $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	[ $rpcs_before -eq $rpcs_after ] ||
-		error "'$cmd' should not send glimpse RPCs to OST"
-	cmd="$LFS find -size -5 -type f $dir"
-	nums=$($cmd | wc -l)
-	[ $nums -eq $expected ] ||
-		error "'$cmd' wrong: found $nums, expected $expected"
-	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
-	echo "Before: $rpcs_before After: $rpcs_after $NUMFILES"
-	[ $rpcs_after -eq $((rpcs_before + 14)) ] ||
-		error "'$cmd' should send 14 glimpse RPCs to OST"
+	test_mkdir -p $dir || error "failed to mkdir $dir"
+	$LFS setstripe -c 1 -i 0 $dir/$tfile ||
+		error "failed to setstripe $dir/$tfile"
+	mdt_idx=$($LFS getdirstripe -i $dir)
+	dd if=/dev/zero of=$dir/$tfile bs=1M count=1
+
+	stack_trap "rm -f $tmp" EXIT
+	$LFS find --size +100K --ost 0 $dir |& tee $tmp
+	! grep -q obd_uuid $tmp ||
+		error "failed to find --size +100K --ost 0 $dir"
+	$LFS find --size +100K --mdt $mdt_idx $dir |& tee $tmp
+	! grep -q obd_uuid $tmp ||
+		error "failed to find --size +100K --mdt $mdt_idx $dir"
 }
-run_test 56ra "check lfs find -size -lazy works for data on OSTs"
+run_test 56rb "check lfs find --size --ost/--mdt works"
 
 test_56s() { # LU-611 #LU-9369
 	[[ $OSTCOUNT -lt 2 ]] && skip_env "need at least 2 OSTs"
@@ -6438,7 +6630,9 @@ test_56wb() {
 	echo "done."
 
 	echo -n "Removing test file from pool '$pool'..."
-	$LFS migrate $file1 &> /dev/null ||
+	# "lfs migrate $file" won't remove the file from the pool
+	# until some striping information is changed.
+	$LFS migrate -c 1 $file1 &> /dev/null ||
 		error "cannot remove from pool"
 	[ "$($LFS getstripe -p $file1)" ] &&
 		error "pool still set"
@@ -6460,19 +6654,23 @@ run_test 56wb "check lfs_migrate pool support"
 
 test_56wc() {
 	local file1="$DIR/$tdir/file1"
+	local parent_ssize
+	local parent_scount
+	local cur_ssize
+	local cur_scount
+	local orig_ssize
 
 	echo -n "Creating test dir..."
 	test_mkdir $DIR/$tdir &> /dev/null || error "cannot create dir"
-	local def_stripe_size=$($LFS getstripe -S $DIR/$tdir 2>/dev/null)
 	$LFS setstripe -S 1M -c 1 "$DIR/$tdir" &> /dev/null ||
-		error "cannot set stripe"
+		error "cannot set stripe by '-S 1M -c 1'"
 	echo "done"
 
 	echo -n "Setting initial stripe for test file..."
 	$LFS setstripe -S 512K -c 1 "$file1" &> /dev/null ||
 		error "cannot set stripe"
-	[ $($LFS getstripe -S "$file1") -eq 524288 ] ||
-		error "stripe size not set"
+	cur_ssize=$($LFS getstripe -S "$file1")
+	[ $cur_ssize -eq 524288 ] || error "setstripe -S $cur_ssize != 524288"
 	echo "done."
 
 	# File currently set to -S 512K -c 1
@@ -6489,8 +6687,8 @@ test_56wc() {
 	echo -n "Verifying -S option is passed through to lfs migrate..."
 	$LFS_MIGRATE -y -S 1M "$file1" &> /dev/null ||
 		error "migration failed"
-	[ $($LFS getstripe -S "$file1") -eq 1048576 ] ||
-		error "file was not restriped"
+	cur_ssize=$($LFS getstripe -S "$file1")
+	[ $cur_ssize -eq 1048576 ] || error "migrate -S $cur_ssize != 1048576"
 	echo "done."
 
 	# File currently set to -S 1M -c 1
@@ -6501,8 +6699,9 @@ test_56wc() {
 		error "long option without argument not supported"
 	$LFS_MIGRATE -y --stripe-size 512K "$file1" &> /dev/null ||
 		error "long option with argument not supported"
-	[ $($LFS getstripe -S "$file1") -eq 524288 ] ||
-		error "file not restriped with --stripe-size option"
+	cur_ssize=$($LFS getstripe -S "$file1")
+	[ $cur_ssize -eq 524288 ] ||
+		error "migrate --stripe-size $cur_ssize != 524288"
 	echo "done."
 
 	# File currently set to -S 512K -c 1
@@ -6511,8 +6710,8 @@ test_56wc() {
 		echo -n "Verifying explicit stripe count can be set..."
 		$LFS_MIGRATE -y -c 2 "$file1" &> /dev/null ||
 			error "migrate failed"
-		[ $($LFS getstripe -c "$file1") -eq 2 ] ||
-			error "file not restriped to explicit count"
+		cur_scount=$($LFS getstripe -c "$file1")
+		[ $cur_scount -eq 2 ] || error "migrate -c $cur_scount != 2"
 		echo "done."
 	fi
 
@@ -6521,17 +6720,21 @@ test_56wc() {
 	# Ensure parent striping is used if -R is set, and no stripe
 	# count or size is specified
 	echo -n "Setting stripe for parent directory..."
-	$LFS setstripe -S 1M -c 1 "$DIR/$tdir" &> /dev/null ||
-		error "cannot set stripe"
+	$LFS setstripe -S 2M -c 1 "$DIR/$tdir" &> /dev/null ||
+		error "cannot set stripe '-S 2M -c 1'"
 	echo "done."
 
 	echo -n "Verifying restripe option uses parent stripe settings..."
+	parent_ssize=$($LFS getstripe -S $DIR/$tdir 2>/dev/null)
+	parent_scount=$($LFS getstripe -c $DIR/$tdir 2>/dev/null)
 	$LFS_MIGRATE -y -R "$file1" &> /dev/null ||
 		error "migrate failed"
-	[ $($LFS getstripe -S "$file1") -eq $def_stripe_size ] ||
-		error "file not restriped to parent settings"
-	[ $($LFS getstripe -c "$file1") -eq 1 ] ||
-		error "file not restriped to parent settings"
+	cur_ssize=$($LFS getstripe -S "$file1")
+	[ $cur_ssize -eq $parent_ssize ] ||
+		error "migrate -R stripe_size $cur_ssize != $parent_ssize"
+	cur_scount=$($LFS getstripe -c "$file1")
+	[ $cur_scount -eq $parent_scount ] ||
+		error "migrate -R stripe_count $cur_scount != $parent_scount"
 	echo "done."
 
 	# File currently set to -S 1M -c 1
@@ -6539,13 +6742,14 @@ test_56wc() {
 	# Ensure striping is preserved if -R is not set, and no stripe
 	# count or size is specified
 	echo -n "Verifying striping size preserved when not specified..."
-	local orig_stripe_size=$($LFS getstripe -S "$file1" 2>/dev/null)
+	orig_ssize=$($LFS getstripe -S "$file1" 2>/dev/null)
 	$LFS setstripe -S 2M -c 1 "$DIR/$tdir" &> /dev/null ||
 		error "cannot set stripe on parent directory"
 	$LFS_MIGRATE -y "$file1" &> /dev/null ||
 		error "migrate failed"
-	[ $($LFS getstripe -S "$file1") -eq $orig_stripe_size ] ||
-		error "file was restriped"
+	cur_ssize=$($LFS getstripe -S "$file1")
+	[ $cur_ssize -eq $orig_ssize ] ||
+		error "migrate by default $cur_ssize != $orig_ssize"
 	echo "done."
 
 	# Ensure file name properly detected when final option has no argument
@@ -6598,6 +6802,24 @@ test_56wd() {
 }
 run_test 56wd "check lfs_migrate --rsync and --no-rsync work"
 
+test_56we() {
+	local td=$DIR/$tdir
+	local tf=$td/$tfile
+
+	test_mkdir $td || error "cannot create $td"
+	touch $tf || error "cannot touch $tf"
+
+	echo -n "Make sure --non-direct|-D works..."
+	$LFS_MIGRATE -y --non-direct -v $tf 2>&1 |
+		grep -q "lfs migrate --non-direct" ||
+		error "--non-direct option cannot work correctly"
+	$LFS_MIGRATE -y -D -v $tf 2>&1 |
+		grep -q "lfs migrate -D" ||
+		error "-D option cannot work correctly"
+	echo "done."
+}
+run_test 56we "check lfs_migrate --non-direct|-D support"
+
 test_56x() {
 	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs"
 	check_swap_layouts_support
@@ -6833,6 +7055,115 @@ test_56xc() {
 }
 run_test 56xc "lfs migration autostripe"
 
+test_56xd() {
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs"
+
+	local dir=$DIR/$tdir
+	local f_mgrt=$dir/$tfile.mgrt
+	local f_yaml=$dir/$tfile.yaml
+	local f_copy=$dir/$tfile.copy
+	local layout_yaml="-E 1M -S 512K -c 1 -E -1 -S 1M -c 2 -i 0"
+	local layout_copy="-c 2 -S 2M -i 1"
+	local yamlfile=$dir/yamlfile
+	local layout_before;
+	local layout_after;
+
+	test_mkdir "$dir" || error "cannot create dir $dir"
+	$LFS setstripe $layout_yaml $f_yaml ||
+		error "cannot setstripe $f_yaml with layout $layout_yaml"
+	$LFS getstripe --yaml $f_yaml > $yamlfile
+	$LFS setstripe $layout_copy $f_copy ||
+		error "cannot setstripe $f_copy with layout $layout_copy"
+	touch $f_mgrt
+	dd if=/dev/zero of=$f_mgrt bs=1M count=4
+
+	# 1. test option --yaml
+	$LFS_MIGRATE -y --yaml $yamlfile $f_mgrt ||
+		error "cannot migrate $f_mgrt with --yaml $yamlfile"
+	layout_before=$(get_layout_param $f_yaml)
+	layout_after=$(get_layout_param $f_mgrt)
+	[ "$layout_after" == "$layout_before" ] ||
+		error "lfs_migrate --yaml: $layout_after != $layout_before"
+
+	# 2. test option --copy
+	$LFS_MIGRATE -y --copy $f_copy $f_mgrt ||
+		error "cannot migrate $f_mgrt with --copy $f_copy"
+	layout_before=$(get_layout_param $f_copy)
+	layout_after=$(get_layout_param $f_mgrt)
+	[ "$layout_after" == "$layout_before" ] ||
+		error "lfs_migrate --copy: $layout_after != $layout_before"
+}
+run_test 56xd "check lfs_migrate --yaml and --copy support"
+
+test_56xe() {
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs"
+
+	local dir=$DIR/$tdir
+	local f_comp=$dir/$tfile
+	local layout="-E 1M -S 512K -c 1 -E -1 -S 1M -c 2 -i 0"
+	local layout_before=""
+	local layout_after=""
+
+	test_mkdir "$dir" || error "cannot create dir $dir"
+	$LFS setstripe $layout $f_comp ||
+		error "cannot setstripe $f_comp with layout $layout"
+	layout_before=$(get_layout_param $f_comp)
+	dd if=/dev/zero of=$f_comp bs=1M count=4
+
+	# 1. migrate a comp layout file by lfs_migrate
+	$LFS_MIGRATE -y $f_comp || error "cannot migrate $f_comp by lfs_migrate"
+	layout_after=$(get_layout_param $f_comp)
+	[ "$layout_before" == "$layout_after" ] ||
+		error "lfs_migrate: $layout_before != $layout_after"
+
+	# 2. migrate a comp layout file by lfs migrate
+	$LFS migrate $f_comp || error "cannot migrate $f_comp by lfs migrate"
+	layout_after=$(get_layout_param $f_comp)
+	[ "$layout_before" == "$layout_after" ] ||
+		error "lfs migrate: $layout_before != $layout_after"
+}
+run_test 56xe "migrate a composite layout file"
+
+test_56xf() {
+	[[ $OSTCOUNT -ge 2 ]] || skip_env "needs >= 2 OSTs"
+
+	[[ $MDS1_VERSION -ge $(version_code 2.13.53) ]] ||
+		skip "Need server version at least 2.13.53"
+
+	local dir=$DIR/$tdir
+	local f_comp=$dir/$tfile
+	local layout="-E 1M -c1 -E -1 -c2"
+	local fid_before=""
+	local fid_after=""
+
+	test_mkdir "$dir" || error "cannot create dir $dir"
+	$LFS setstripe $layout $f_comp ||
+		error "cannot setstripe $f_comp with layout $layout"
+	fid_before=$($LFS getstripe --fid $f_comp)
+	dd if=/dev/zero of=$f_comp bs=1M count=4
+
+	# 1. migrate a comp layout file to a comp layout
+	$LFS migrate $f_comp || error "cannot migrate $f_comp by lfs migrate"
+	fid_after=$($LFS getstripe --fid $f_comp)
+	[ "$fid_before" == "$fid_after" ] ||
+		error "comp-to-comp migrate: $fid_before != $fid_after"
+
+	# 2. migrate a comp layout file to a plain layout
+	$LFS migrate -c2 $f_comp ||
+		error "cannot migrate $f_comp by lfs migrate"
+	fid_after=$($LFS getstripe --fid $f_comp)
+	[ "$fid_before" == "$fid_after" ] ||
+		error "comp-to-plain migrate: $fid_before != $fid_after"
+
+	# 3. migrate a plain layout file to a comp layout
+	$LFS migrate $layout $f_comp ||
+		error "cannot migrate $f_comp by lfs migrate"
+	fid_after=$($LFS getstripe --fid $f_comp)
+	[ "$fid_before" == "$fid_after" ] ||
+		error "plain-to-comp migrate: $fid_before != $fid_after"
+}
+run_test 56xf "FID is not lost during migration of a composite layout file"
+
 test_56y() {
 	[ $MDS1_VERSION -lt $(version_code 2.4.53) ] &&
 		skip "No HSM $(lustre_build_version $SINGLEMDS) MDS < 2.4.53"
@@ -7492,8 +7823,8 @@ run_test 63b "async write errors should be returned to fsync ==="
 test_64a () {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
-	df $DIR
-	lctl get_param -n osc.*[oO][sS][cC][_-]*.cur* | grep "[0-9]"
+	lfs df $DIR
+	lctl get_param osc.*[oO][sS][cC][_-]*.cur* | grep "=[1-9]"
 }
 run_test 64a "verify filter grant calculations (in kernel) ====="
 
@@ -7509,18 +7840,25 @@ test_64c() {
 }
 run_test 64c "verify grant shrink"
 
+import_param() {
+	local tgt=$1
+	local param=$2
+
+	$LCTL get_param osc.$tgt.import | awk "/$param/ { print \$2 }"
+}
+
 # this does exactly what osc_request.c:osc_announce_cached() does in
 # order to calculate max amount of grants to ask from server
 want_grant() {
 	local tgt=$1
 
-	local nrpages=$($LCTL get_param -n osc.${tgt}.max_pages_per_rpc)
-	local rpc_in_flight=$($LCTL get_param -n osc.${tgt}.max_rpcs_in_flight)
+	local nrpages=$($LCTL get_param -n osc.$tgt.max_pages_per_rpc)
+	local rpc_in_flight=$($LCTL get_param -n osc.$tgt.max_rpcs_in_flight)
 
-	((rpc_in_flight ++));
+	((rpc_in_flight++));
 	nrpages=$((nrpages * rpc_in_flight))
 
-	local dirty_max_pages=$($LCTL get_param -n osc.${tgt}.max_dirty_mb)
+	local dirty_max_pages=$($LCTL get_param -n osc.$tgt.max_dirty_mb)
 
 	dirty_max_pages=$((dirty_max_pages * 1024 * 1024 / PAGE_SIZE))
 
@@ -7528,13 +7866,11 @@ want_grant() {
 	local undirty=$((nrpages * PAGE_SIZE))
 
 	local max_extent_pages
-	max_extent_pages=$($LCTL get_param osc.${tgt}.import |
-	    grep grant_max_extent_size | awk '{print $2}')
+	max_extent_pages=$(import_param $tgt grant_max_extent_size)
 	max_extent_pages=$((max_extent_pages / PAGE_SIZE))
 	local nrextents=$(((nrpages + max_extent_pages - 1) / max_extent_pages))
 	local grant_extent_tax
-	grant_extent_tax=$($LCTL get_param osc.${tgt}.import |
-	    grep grant_extent_tax | awk '{print $2}')
+	grant_extent_tax=$(import_param $tgt grant_extent_tax)
 
 	undirty=$((undirty + nrextents * grant_extent_tax))
 
@@ -7548,56 +7884,171 @@ grant_chunk() {
 	local max_brw_size
 	local grant_extent_tax
 
-	max_brw_size=$($LCTL get_param osc.${tgt}.import |
-	    grep max_brw_size | awk '{print $2}')
+	max_brw_size=$(import_param $tgt max_brw_size)
 
-	grant_extent_tax=$($LCTL get_param osc.${tgt}.import |
-	    grep grant_extent_tax | awk '{print $2}')
+	grant_extent_tax=$(import_param $tgt grant_extent_tax)
 
 	echo $(((max_brw_size + grant_extent_tax) * 2))
 }
 
 test_64d() {
-	[ $OST1_VERSION -lt $(version_code 2.10.56) ] &&
+	[ $OST1_VERSION -ge $(version_code 2.10.56) ] ||
 		skip "OST < 2.10.55 doesn't limit grants enough"
 
-	local tgt=$($LCTL dl | grep "0000-osc-[^mM]" | awk '{print $4}')
-	local file=$DIR/$tfile
+	local tgt=$($LCTL dl | awk '/OST0000-osc-[^mM]/ { print $4 }')
 
-	[[ $($LCTL get_param osc.${tgt}.import |
-	     grep "connect_flags:.*grant_param") ]] ||
+	[[ "$($LCTL get_param osc.${tgt}.import)" =~ "grant_param" ]] ||
 		skip "no grant_param connect flag"
 
-	local olddebug=$($LCTL get_param -n debug 2> /dev/null)
+	local olddebug="$($LCTL get_param -n debug 2> /dev/null)"
+
+	$LCTL set_param -n -n debug="$OLDDEBUG" || true
+	stack_trap "$LCTL set_param -n debug='$olddebug'" EXIT
 
-	$LCTL set_param debug="$OLDDEBUG" 2> /dev/null || true
 
 	local max_cur_granted=$(($(want_grant $tgt) + $(grant_chunk $tgt)))
-	stack_trap "rm -f $file" EXIT
+	stack_trap "rm -f $DIR/$tfile && wait_delete_completed" EXIT
 
-	$LFS setstripe $file -i 0 -c 1
-	dd if=/dev/zero of=$file bs=1M count=1000 &
+	$LFS setstripe $DIR/$tfile -i 0 -c 1
+	dd if=/dev/zero of=$DIR/$tfile bs=1M count=1000 &
 	ddpid=$!
 
-	while true
-	do
-		local cur_grant=$($LCTL get_param -n osc.${tgt}.cur_grant_bytes)
-		if [[ $cur_grant -gt $max_cur_granted ]]
-		then
+	while kill -0 $ddpid; do
+		local cur_grant=$($LCTL get_param -n osc.$tgt.cur_grant_bytes)
+
+		if [[ $cur_grant -gt $max_cur_granted ]]; then
 			kill $ddpid
 			error "cur_grant $cur_grant > $max_cur_granted"
 		fi
-		kill -0 $ddpid
-		[[ $? -ne 0 ]] && break;
-		sleep 2
-	done
 
-	rm -f $DIR/$tfile
-	wait_delete_completed
-	$LCTL set_param debug="$olddebug" 2> /dev/null || true
+		sleep 1
+	done
 }
 run_test 64d "check grant limit exceed"
 
+check_grants() {
+	local tgt=$1
+	local expected=$2
+	local msg=$3
+	local cur_grants=$($LCTL get_param -n osc.$tgt.cur_grant_bytes)
+
+	((cur_grants == expected)) ||
+		error "$msg: grants mismatch: $cur_grants, expected $expected"
+}
+
+round_up_p2() {
+	echo $((($1 + $2 - 1) & ~($2 - 1)))
+}
+
+test_64e() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+	[ $OST1_VERSION -ge $(version_code 2.11.56) ] ||
+		skip "Need OSS version at least 2.11.56"
+
+	# Remount client to reset grant
+	remount_client $MOUNT || error "failed to remount client"
+	local osc_tgt="$FSNAME-OST0000-osc-$($LFS getname -i $DIR)"
+
+	local init_grants=$(import_param $osc_tgt initial_grant)
+
+	check_grants $osc_tgt $init_grants "init grants"
+
+	local extent_tax=$(import_param $osc_tgt grant_extent_tax)
+	local max_brw_size=$(import_param $osc_tgt max_brw_size)
+	local gbs=$(import_param $osc_tgt grant_block_size)
+
+	# write random number of bytes from max_brw_size / 4 to max_brw_size
+	local write_bytes=$(shuf -i $((max_brw_size / 4))-$max_brw_size -n 1)
+	# align for direct io
+	write_bytes=$(round_up_p2 $write_bytes PAGE_SIZE)
+	# round to grant consumption unit
+	local wb_round_up=$(round_up_p2 $write_bytes gbs)
+
+	local grants=$((wb_round_up + extent_tax))
+
+	$LFS setstripe -c 1 -i 0 $DIR/$tfile  || error "lfs setstripe failed"
+
+	# define OBD_FAIL_TGT_NO_GRANT 0x725
+	# make the server not grant more back
+	do_facet ost1 $LCTL set_param fail_loc=0x725
+	dd if=/dev/zero of=$DIR/$tfile bs=$write_bytes count=1 oflag=direct
+
+	do_facet ost1 $LCTL set_param fail_loc=0
+
+	check_grants $osc_tgt $((init_grants - grants)) "dio w/o grant alloc"
+
+	rm -f $DIR/$tfile || error "rm failed"
+
+	# Remount client to reset grant
+	remount_client $MOUNT || error "failed to remount client"
+	osc_tgt="$FSNAME-OST0000-osc-$($LFS getname -i $DIR)"
+
+	$LFS setstripe -c 1 -i 0 $DIR/$tfile || error "lfs setstripe failed"
+
+	# define OBD_FAIL_TGT_NO_GRANT 0x725
+	# make the server not grant more back
+	do_facet ost1 $LCTL set_param fail_loc=0x725
+	$MULTIOP $DIR/$tfile "oO_WRONLY:w${write_bytes}yc"
+	do_facet ost1 $LCTL set_param fail_loc=0
+
+	check_grants $osc_tgt $((init_grants - grants)) "buf io w/o grant alloc"
+}
+run_test 64e "check grant consumption (no grant allocation)"
+
+test_64f() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+
+	# Remount client to reset grant
+	remount_client $MOUNT || error "failed to remount client"
+	local osc_tgt="$FSNAME-OST0000-osc-$($LFS getname -i $DIR)"
+
+	local init_grants=$(import_param $osc_tgt initial_grant)
+	local extent_tax=$(import_param $osc_tgt grant_extent_tax)
+	local max_brw_size=$(import_param $osc_tgt max_brw_size)
+	local gbs=$(import_param $osc_tgt grant_block_size)
+	local chunk=$(grant_chunk $osc_tgt)
+
+	# write random number of bytes from max_brw_size / 4 to max_brw_size
+	local write_bytes=$(shuf -i $((max_brw_size / 4))-$max_brw_size -n 1)
+	# align for direct io
+	write_bytes=$(round_up_p2 $write_bytes PAGE_SIZE)
+	# round to grant consumption unit
+	local wb_round_up=$(round_up_p2 $write_bytes gbs)
+
+	local grants=$((wb_round_up + extent_tax))
+
+	$LFS setstripe -c 1 -i 0 $DIR/$tfile || error "lfs setstripe failed"
+	dd if=/dev/zero of=$DIR/$tfile bs=$write_bytes count=1 oflag=direct ||
+		error "error writing to $DIR/$tfile"
+
+	check_grants $osc_tgt $((init_grants - grants + chunk)) \
+		"direct io with grant allocation"
+
+	rm -f $DIR/$tfile || error "rm failed"
+
+	# Remount client to reset grant
+	remount_client $MOUNT || error "failed to remount client"
+	osc_tgt="$FSNAME-OST0000-osc-$($LFS getname -i $DIR)"
+
+	$LFS setstripe -c 1 -i 0 $DIR/$tfile || error "lfs setstripe failed"
+
+	local cmd="oO_WRONLY:w${write_bytes}_yc"
+
+	$MULTIOP $DIR/$tfile $cmd &
+	MULTIPID=$!
+	sleep 1
+
+	check_grants $osc_tgt $((init_grants - grants)) \
+		"buffered io, not write rpc"
+
+	kill -USR1 $MULTIPID
+	wait
+
+	check_grants $osc_tgt $((init_grants - grants + chunk)) \
+		"buffered io, one RPC"
+}
+run_test 64f "check grant consumption (with grant allocation)"
+
 # bug 1414 - set/get directories' stripe info
 test_65a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
@@ -8156,28 +8607,27 @@ num_inodes() {
 test_76() { # Now for bug 20433, added originally in bug 1443
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
-	local CPUS=$(getconf _NPROCESSORS_ONLN 2>/dev/null)
-
 	cancel_lru_locks osc
-	BEFORE_INODES=$(num_inodes)
-	echo "before inodes: $BEFORE_INODES"
-	local COUNT=1000
-	[ "$SLOW" = "no" ] && COUNT=100
-	for i in $(seq $COUNT); do
+	local cpus=$(getconf _NPROCESSORS_ONLN 2>/dev/null)
+	local before=$(num_inodes)
+	local count=$((512 * cpus))
+	[ "$SLOW" = "no" ] && count=$((64 * cpus))
+
+	echo "before inodes: $before"
+	for i in $(seq $count); do
 		touch $DIR/$tfile
 		rm -f $DIR/$tfile
 	done
 	cancel_lru_locks osc
-	AFTER_INODES=$(num_inodes)
-	echo "after inodes: $AFTER_INODES"
-	local wait=0
-	while [[ $((AFTER_INODES-1*${CPUS:-1})) -gt $BEFORE_INODES ]]; do
-		sleep 2
-		AFTER_INODES=$(num_inodes)
-		wait=$((wait+2))
-		echo "wait $wait seconds inodes: $AFTER_INODES"
-		if [ $wait -gt 30 ]; then
-			error "inode slab grew from $BEFORE_INODES to $AFTER_INODES"
+	local after=$(num_inodes)
+	echo "after inodes: $after"
+	while (( after > before + 8 * ${cpus:-1} )); do
+		sleep 1
+		after=$(num_inodes)
+		wait=$((wait + 1))
+		(( wait % 5 == 0 )) && echo "wait $wait seconds inodes: $after"
+		if (( wait > 30 )); then
+			error "inode slab grew from $before to $after"
 		fi
 	done
 }
@@ -8440,9 +8890,8 @@ test_77k() { # LU-10906
 	local i
 
 	[ "$ORIG_CSUM" ] || ORIG_CSUM=$(eval $get_checksum)
-	stack_trap "wait_update $HOSTNAME '$get_checksum' $ORIG_CSUM" EXIT
-	stack_trap "do_facet mgs $LCTL set_param -P $cksum_param=$ORIG_CSUM" \
-		EXIT
+	stack_trap "wait_update $HOSTNAME '$get_checksum' $ORIG_CSUM || true"
+	stack_trap "do_facet mgs $LCTL set_param -P $cksum_param=$ORIG_CSUM"
 
 	for i in 0 1; do
 		do_facet mgs $LCTL set_param -P $cksum_param=$i ||
@@ -8936,7 +9385,7 @@ test_101d() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
 	local file=$DIR/$tfile
-	local sz_MB=${FILESIZE_101d:-500}
+	local sz_MB=${FILESIZE_101d:-80}
 	local ra_MB=${READAHEAD_MB:-40}
 
 	local free_MB=$(($(df -P $DIR | tail -n 1 | awk '{ print $4 }') / 1024))
@@ -8956,24 +9405,30 @@ test_101d() {
 	stack_trap "$LCTL set_param -n llite.*.max_read_ahead_mb $old_RA" EXIT
 	$LCTL get_param -n llite.*.max_read_ahead_mb
 
-	echo Reading the test file $file with read-ahead disabled
-	local raOFF=$(do_and_time "dd if=$file of=/dev/null bs=1M count=$sz_MB")
+	echo "Reading the test file $file with read-ahead disabled"
+	local sz_KB=$((sz_MB * 1024 / 4))
+	# 10485760 bytes transferred in 0.000938 secs (11179579337 bytes/sec)
+	# 104857600 bytes (105 MB) copied, 0.00876352 s, 12.0 GB/s
+	local raOFF=$(LANG=C dd if=$file of=/dev/null bs=4k count=$sz_KB |&
+		      sed -e '/records/d' -e 's/.* \([0-9]*\.[0-9]*\) *s.*/\1/')
 
-	echo Cancel LRU locks on lustre client to flush the client cache
+	echo "Cancel LRU locks on lustre client to flush the client cache"
 	cancel_lru_locks osc
 	echo Enable read-ahead with ${ra_MB}MB
 	$LCTL set_param -n llite.*.max_read_ahead_mb=$ra_MB
 
-	echo Reading the test file $file with read-ahead enabled
-	local raON=$(do_and_time "dd if=$file of=/dev/null bs=1M count=$sz_MB")
+	echo "Reading the test file $file with read-ahead enabled"
+	local raON=$(LANG=C dd if=$file of=/dev/null bs=4k count=$sz_KB |&
+		     sed -e '/records/d' -e 's/.* \([0-9]*\.[0-9]*\) *s.*/\1/')
 
 	echo "read-ahead disabled time read $raOFF"
-	echo "read-ahead enabled  time read $raON"
+	echo "read-ahead enabled time read $raON"
 
 	rm -f $file
 	wait_delete_completed
 
-	[ $raOFF -le 1 ] || [ $raON -lt $raOFF ] ||
+	# use awk for this check instead of bash because it handles decimals
+	awk "{ exit !($raOFF < 1.0 || $raOFF > $raON) }" <<<"ignore_me" ||
 		error "readahead ${raON}s > no-readahead ${raOFF}s ${sz_MB}M"
 }
 run_test 101d "file read with and without read-ahead enabled"
@@ -9153,6 +9608,58 @@ test_101h() {
 }
 run_test 101h "Readahead should cover current read window"
 
+test_101i() {
+	dd if=/dev/zero of=$DIR/$tfile bs=1M count=10 ||
+		error "dd 10M file failed"
+
+	local max_per_file_mb=$($LCTL get_param -n \
+		llite.*.max_read_ahead_per_file_mb 2>/dev/null)
+	cancel_lru_locks osc
+	stack_trap "$LCTL set_param llite.*.max_read_ahead_per_file_mb=$max_per_file_mb"
+	$LCTL set_param llite.*.max_read_ahead_per_file_mb=1 ||
+		error "set max_read_ahead_per_file_mb to 1 failed"
+
+	echo "Reset readahead stats"
+	$LCTL set_param llite.*.read_ahead_stats=0
+
+	dd if=$DIR/$tfile of=/dev/null bs=2M
+
+	$LCTL get_param llite.*.read_ahead_stats
+	local miss=$($LCTL get_param -n llite.*.read_ahead_stats |
+		     awk '/misses/ { print $2 }')
+	[ $miss -eq 5 ] || error "expected misses 5 but got $miss"
+	rm -f $DIR/$tfile
+}
+run_test 101i "allow current readahead to exceed reservation"
+
+test_101j() {
+	$LFS setstripe -i 0 -c 1 $DIR/$tfile ||
+		error "setstripe $DIR/$tfile failed"
+	local file_size=$((1048576 * 16))
+	local old_ra=$($LCTL get_param -n llite.*.max_read_ahead_mb | head -n 1)
+	stack_trap "$LCTL set_param -n llite.*.max_read_ahead_mb $old_ra" EXIT
+
+	echo Disable read-ahead
+	$LCTL set_param -n llite.*.max_read_ahead_mb=0
+
+	dd if=/dev/zero of=$DIR/$tfile bs=1M count=$(($file_size / 1048576))
+	for blk in $PAGE_SIZE 1048576 $file_size; do
+		cancel_lru_locks osc
+		echo "Reset readahead stats"
+		$LCTL set_param -n llite.*.read_ahead_stats=0
+		local count=$(($file_size / $blk))
+		dd if=$DIR/$tfile bs=$blk count=$count of=/dev/null
+		local miss=$($LCTL get_param -n llite.*.read_ahead_stats |
+			     get_named_value 'failed to fast read' |
+			     cut -d" " -f1 | calc_total)
+		$LCTL get_param -n llite.*.read_ahead_stats
+		[ $miss -eq $count ] || error "expected $count got $miss"
+	done
+
+	rm -f $p $DIR/$tfile
+}
+run_test 101j "A complete read block should be submitted when no RA"
+
 setup_test102() {
 	test_mkdir $DIR/$tdir
 	chown $RUNAS_ID $DIR/$tdir
@@ -9246,36 +9753,54 @@ test_102a() {
 }
 run_test 102a "user xattr test =================================="
 
+check_102b_layout() {
+	local layout="$*"
+	local testfile=$DIR/$tfile
+
+	echo "test layout '$layout'"
+	$LFS setstripe $layout $testfile || error "setstripe failed"
+	$LFS getstripe -y $testfile
+
+	echo "get/set/list trusted.lov xattr ..." # b=10930
+	local value=$(getfattr -n trusted.lov -e hex $testfile | grep trusted)
+	[[ "$value" =~ "trusted.lov" ]] ||
+		error "can't get trusted.lov from $testfile"
+	local stripe_count_orig=$($LFS getstripe -c $testfile) ||
+		error "getstripe failed"
+
+	$MCREATE $testfile.2 || error "mcreate $testfile.2 failed"
+
+	value=$(cut -d= -f2 <<<$value)
+	# LU-13168: truncated xattr should fail if short lov_user_md header
+	[ $CLIENT_VERSION -lt $(version_code 2.13.53) ] &&
+		lens="${#value}" || lens="$(seq 4 2 ${#value})"
+	for len in $lens; do
+		echo "setfattr $len $testfile.2"
+		setfattr -n trusted.lov -v ${value:0:$len} $testfile.2 &&
+			[ $len -lt 66 ] && error "short xattr len=$len worked"
+	done
+	local stripe_size=$($LFS getstripe -S $testfile.2)
+	local stripe_count=$($LFS getstripe -c $testfile.2)
+	[[ $stripe_size -eq 65536 ]] ||
+		error "stripe size $stripe_size != 65536"
+	[[ $stripe_count -eq $stripe_count_orig ]] ||
+		error "stripe count $stripe_count != $stripe_count_orig"
+	rm $testfile $testfile.2
+}
+
 test_102b() {
 	[ -z "$(which setfattr 2>/dev/null)" ] &&
 		skip_env "could not find setfattr"
 	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs"
 
-	# b10930: get/set/list trusted.lov xattr
-	echo "get/set/list trusted.lov xattr ..."
-	local testfile=$DIR/$tfile
-	$LFS setstripe -S 65536 -i 1 -c $OSTCOUNT $testfile ||
-		error "setstripe failed"
-	local STRIPECOUNT=$($LFS getstripe -c $testfile) ||
-		error "getstripe failed"
-	getfattr -d -m "^trusted" $testfile 2>/dev/null | grep "trusted.lov" ||
-		error "can't get trusted.lov from $testfile"
+	# check plain layout
+	check_102b_layout -S 65536 -i 1 -c $OSTCOUNT
 
-	local testfile2=${testfile}2
-	local value=$(getfattr -n trusted.lov $testfile 2>/dev/null |
-			grep "trusted.lov" | sed -e 's/[^=]\+=//')
+	# and also check composite layout
+	check_102b_layout -E 1M -S 65536 -i 1 -c $OSTCOUNT -Eeof -S4M
 
-	$MCREATE $testfile2
-	setfattr -n trusted.lov -v $value $testfile2
-	local stripe_size=$($LFS getstripe -S $testfile2)
-	local stripe_count=$($LFS getstripe -c $testfile2)
-	[[ $stripe_size -eq 65536 ]] ||
-		error "stripe size $stripe_size != 65536"
-	[[ $stripe_count -eq $STRIPECOUNT ]] ||
-		error "stripe count $stripe_count != $STRIPECOUNT"
-	rm -f $DIR/$tfile
 }
-run_test 102b "getfattr/setfattr for trusted.lov EAs ============"
+run_test 102b "getfattr/setfattr for trusted.lov EAs"
 
 test_102c() {
 	[ -z "$(which setfattr 2>/dev/null)" ] &&
@@ -11055,8 +11580,8 @@ test_121() { #bug #10589
 }
 run_test 121 "read cancel race ========="
 
-test_123a() { # was test 123, statahead(bug 11401)
-	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+test_123a_base() { # was test 123, statahead(bug 11401)
+	local lsx="$1"
 
 	SLOWOK=0
 	if ! grep -q "processor.*: 1" /proc/cpuinfo; then
@@ -11068,76 +11593,120 @@ test_123a() { # was test 123, statahead(bug 11401)
 	test_mkdir $DIR/$tdir
 	NUMFREE=$(df -i -P $DIR | tail -n 1 | awk '{ print $4 }')
 	[[ $NUMFREE -gt 100000 ]] && NUMFREE=100000 || NUMFREE=$((NUMFREE-1000))
-        MULT=10
-        for ((i=100, j=0; i<=$NUMFREE; j=$i, i=$((i * MULT)) )); do
-                createmany -o $DIR/$tdir/$tfile $j $((i - j))
-
-                max=`lctl get_param -n llite.*.statahead_max | head -n 1`
-                lctl set_param -n llite.*.statahead_max 0
-                lctl get_param llite.*.statahead_max
-                cancel_lru_locks mdc
-                cancel_lru_locks osc
-                stime=`date +%s`
-                time ls -l $DIR/$tdir | wc -l
-                etime=`date +%s`
-                delta=$((etime - stime))
-                log "ls $i files without statahead: $delta sec"
-                lctl set_param llite.*.statahead_max=$max
-
-                swrong=`lctl get_param -n llite.*.statahead_stats | grep "statahead wrong:" | awk '{print $3}'`
-                lctl get_param -n llite.*.statahead_max | grep '[0-9]'
-                cancel_lru_locks mdc
-                cancel_lru_locks osc
-                stime=`date +%s`
-                time ls -l $DIR/$tdir | wc -l
-                etime=`date +%s`
-                delta_sa=$((etime - stime))
-                log "ls $i files with statahead: $delta_sa sec"
-                lctl get_param -n llite.*.statahead_stats
-                ewrong=`lctl get_param -n llite.*.statahead_stats | grep "statahead wrong:" | awk '{print $3}'`
+	MULT=10
+	for ((i=100, j=0; i<=$NUMFREE; j=$i, i=$((i * MULT)) )); do
+		createmany -o $DIR/$tdir/$tfile $j $((i - j))
+
+		max=$(lctl get_param -n llite.*.statahead_max | head -n 1)
+		lctl set_param -n llite.*.statahead_max 0
+		lctl get_param llite.*.statahead_max
+		cancel_lru_locks mdc
+		cancel_lru_locks osc
+		stime=$(date +%s)
+		time $lsx $DIR/$tdir | wc -l
+		etime=$(date +%s)
+		delta=$((etime - stime))
+		log "$lsx $i files without statahead: $delta sec"
+		lctl set_param llite.*.statahead_max=$max
+
+		swrong=$(lctl get_param -n llite.*.statahead_stats |
+			grep "statahead wrong:" | awk '{print $3}')
+		lctl get_param -n llite.*.statahead_max | grep '[0-9]'
+		cancel_lru_locks mdc
+		cancel_lru_locks osc
+		stime=$(date +%s)
+		time $lsx $DIR/$tdir | wc -l
+		etime=$(date +%s)
+		delta_sa=$((etime - stime))
+		log "$lsx $i files with statahead: $delta_sa sec"
+		lctl get_param -n llite.*.statahead_stats
+		ewrong=$(lctl get_param -n llite.*.statahead_stats |
+			grep "statahead wrong:" | awk '{print $3}')
 
 		[[ $swrong -lt $ewrong ]] &&
 			log "statahead was stopped, maybe too many locks held!"
 		[[ $delta -eq 0 || $delta_sa -eq 0 ]] && continue
 
-                if [ $((delta_sa * 100)) -gt $((delta * 105)) -a $delta_sa -gt $((delta + 2)) ]; then
-                    max=`lctl get_param -n llite.*.statahead_max | head -n 1`
-                    lctl set_param -n llite.*.statahead_max 0
-                    lctl get_param llite.*.statahead_max
-                    cancel_lru_locks mdc
-                    cancel_lru_locks osc
-                    stime=`date +%s`
-                    time ls -l $DIR/$tdir | wc -l
-                    etime=`date +%s`
-                    delta=$((etime - stime))
-                    log "ls $i files again without statahead: $delta sec"
-                    lctl set_param llite.*.statahead_max=$max
-                    if [ $((delta_sa * 100)) -gt $((delta * 105)) -a $delta_sa -gt $((delta + 2)) ]; then
-                        if [  $SLOWOK -eq 0 ]; then
-                                error "ls $i files is slower with statahead!"
-                        else
-                                log "ls $i files is slower with statahead!"
-                        fi
-                        break
-                    fi
-                fi
+		if [ $((delta_sa * 100)) -gt $((delta * 105)) -a $delta_sa -gt $((delta + 2)) ]; then
+			max=$(lctl get_param -n llite.*.statahead_max |
+				head -n 1)
+			lctl set_param -n llite.*.statahead_max 0
+			lctl get_param llite.*.statahead_max
+			cancel_lru_locks mdc
+			cancel_lru_locks osc
+			stime=$(date +%s)
+			time $lsx $DIR/$tdir | wc -l
+			etime=$(date +%s)
+			delta=$((etime - stime))
+			log "$lsx $i files again without statahead: $delta sec"
+			lctl set_param llite.*.statahead_max=$max
+			if [ $((delta_sa * 100 > delta * 105 && delta_sa > delta + 2)) ]; then
+				if [  $SLOWOK -eq 0 ]; then
+					error "$lsx $i files is slower with statahead!"
+				else
+					log "$lsx $i files is slower with statahead!"
+				fi
+				break
+			fi
+		fi
 
-                [ $delta -gt 20 ] && break
-                [ $delta -gt 8 ] && MULT=$((50 / delta))
-                [ "$SLOW" = "no" -a $delta -gt 5 ] && break
-        done
-        log "ls done"
+		[ $delta -gt 20 ] && break
+		[ $delta -gt 8 ] && MULT=$((50 / delta))
+		[ "$SLOW" = "no" -a $delta -gt 5 ] && break
+	done
+	log "$lsx done"
 
-        stime=`date +%s`
-        rm -r $DIR/$tdir
-        sync
-        etime=`date +%s`
-        delta=$((etime - stime))
-        log "rm -r $DIR/$tdir/: $delta seconds"
-        log "rm done"
-        lctl get_param -n llite.*.statahead_stats
+	stime=$(date +%s)
+	rm -r $DIR/$tdir
+	sync
+	etime=$(date +%s)
+	delta=$((etime - stime))
+	log "rm -r $DIR/$tdir/: $delta seconds"
+	log "rm done"
+	lctl get_param -n llite.*.statahead_stats
+}
+
+test_123aa() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+
+	test_123a_base "ls -l"
+}
+run_test 123aa "verify statahead work"
+
+test_123ab() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+
+	statx_supported || skip_env "Test must be statx() syscall supported"
+
+	test_123a_base "$STATX -l"
+}
+run_test 123ab "verify statahead work by using statx"
+
+test_123ac() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+
+	statx_supported || skip_env "Test must be statx() syscall supported"
+
+	local rpcs_before
+	local rpcs_after
+	local agl_before
+	local agl_after
+
+	cancel_lru_locks $OSC
+	rpcs_before=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	agl_before=$($LCTL get_param -n llite.*.statahead_stats |
+		awk '/agl.total:/ {print $3}')
+	test_123a_base "$STATX -c \"%n %i %A %h %u %g %W %X %Z\" -D"
+	test_123a_base "$STATX --cached=always -D"
+	agl_after=$($LCTL get_param -n llite.*.statahead_stats |
+		awk '/agl.total:/ {print $3}')
+	[ $agl_before -eq $agl_after ] ||
+		error "Should not trigger AGL thread - $agl_before:$agl_after"
+	rpcs_after=$(calc_stats $OSC.*$OSC*.stats ldlm_glimpse_enqueue)
+	[ $rpcs_after -eq $rpcs_before ] ||
+		error "$STATX should not send glimpse RPCs to $OSC"
 }
-run_test 123a "verify statahead work"
+run_test 123ac "verify statahead work by using statx without glimpse RPCs"
 
 test_123b () { # statahead(bug 15027)
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
@@ -11662,7 +12231,7 @@ set_dir_limits () {
 check_mds_dmesg() {
 	local facets=$(get_facets MDS)
 	for facet in ${facets//,/ }; do
-		do_facet $facet "dmesg | tail -3 | grep -q $1" && return 0
+		do_facet $facet "dmesg | tail -3 | grep $1" && return 0
 	done
 	return 1
 }
@@ -11677,55 +12246,49 @@ test_129() {
 	remote_mds_nodsh && skip "remote MDS with nodsh"
 
 	local ENOSPC=28
-	local EFBIG=27
 	local has_warning=false
 
 	rm -rf $DIR/$tdir
 	mkdir -p $DIR/$tdir
 
 	# block size of mds1
-	local maxsize=$(($($LCTL get_param -n mdc.*MDT0000*.blocksize) * 5))
-	set_dir_limits $maxsize $maxsize
+	local maxsize=$(($($LCTL get_param -n mdc.*MDT0000*.blocksize) * 8))
+	set_dir_limits $maxsize $((maxsize * 6 / 8))
+	stack_trap "set_dir_limits 0 0"
+	stack_trap "unlinkmany $DIR/$tdir/file_base_ 2000 || true"
 	local dirsize=$(stat -c%s "$DIR/$tdir")
 	local nfiles=0
-	while [[ $dirsize -le $maxsize ]]; do
-		$MULTIOP $DIR/$tdir/file_base_$nfiles Oc
+	while (( $dirsize <= $maxsize )); do
+		$MCREATE $DIR/$tdir/file_base_$nfiles
 		rc=$?
-		if ! $has_warning; then
-			check_mds_dmesg '"is approaching"' && has_warning=true
-		fi
 		# check two errors:
-		# ENOSPC for new ext4 max_dir_size (kernel commit df981d03ee)
-		# EFBIG for previous versions included in ldiskfs series
-		if [ $rc -eq $EFBIG ] || [ $rc -eq $ENOSPC ]; then
+		# ENOSPC for ext4 max_dir_size, which has been used since
+		# kernel v3.6-rc1-8-gdf981d03ee, lustre v2_4_50_0-79-gaed82035c0
+		if (( rc == ENOSPC )); then
 			set_dir_limits 0 0
-			echo "return code $rc received as expected"
+			echo "rc=$rc returned as expected after $nfiles files"
 
 			createmany -o $DIR/$tdir/file_extra_$nfiles. 5 ||
-				error_exit "create failed w/o dir size limit"
+				error "create failed w/o dir size limit"
 
-			check_mds_dmesg '"has reached"' ||
-				error_exit "reached message should be output"
-
-			[ $has_warning = "false" ] &&
-				error_exit "warning message should be output"
+			# messages may be rate limited if test is run repeatedly
+			check_mds_dmesg '"is approaching max"' ||
+				echo "warning message should be output"
+			check_mds_dmesg '"has reached max"' ||
+				echo "reached message should be output"
 
 			dirsize=$(stat -c%s "$DIR/$tdir")
 
 			[[ $dirsize -ge $maxsize ]] && return 0
-			error_exit "current dir size $dirsize, " \
-				   "previous limit $maxsize"
-		elif [ $rc -ne 0 ]; then
-			set_dir_limits 0 0
-			error_exit "return $rc received instead of expected " \
-				   "$EFBIG or $ENOSPC, files in dir $dirsize"
+			error "dirsize $dirsize < $maxsize after $nfiles files"
+		elif (( rc != 0 )); then
+			break
 		fi
 		nfiles=$((nfiles + 1))
 		dirsize=$(stat -c%s "$DIR/$tdir")
 	done
 
-	set_dir_limits 0 0
-	error "exceeded dir size limit $maxsize($MDSCOUNT) : $dirsize bytes"
+	error "rc=$rc, size=$dirsize/$maxsize, mdt=$MDSCOUNT, nfiles=$nfiles"
 }
 run_test 129 "test directory size limit ========================"
 
@@ -12452,38 +13015,21 @@ test_133e() {
 }
 run_test 133e "Verifying OST {read,write}_bytes nid stats ================="
 
-proc_regexp="/{proc,sys}/{fs,sys,kernel/debug}/{lustre,lnet}/"
-
-# Some versions of find (4.5.11, 4.5.14) included in CentOS 7.3-7.5 do
-# not honor the -ignore_readdir_race option correctly. So we call
-# error_ignore() rather than error() in these cases. See LU-11152.
-error_133() {
-	if (find --version; do_facet mds1 find --version) |
-		grep -q '\b4\.5\.1[1-4]\b'; then
-		error_ignore LU-11152 "$@"
-	else
-		error "$@"
-	fi
-}
-
 test_133f() {
-	# First without trusting modes.
-	local proc_dirs=$(eval \ls -d $proc_regexp 2>/dev/null)
-	echo "proc_dirs='$proc_dirs'"
-	[ -n "$proc_dirs" ] || error "no proc_dirs on $HOSTNAME"
-	find $proc_dirs -exec cat '{}' \; &> /dev/null
+	[[ $(lustre_version_code $facet) -ge $(version_code 2.7.65) ]] ||
+		skip "too old lustre for get_param -R ($facet_ver)"
 
-	# Second verifying readability.
+	# verifying readability.
 	$LCTL get_param -R '*' &> /dev/null
 
 	# Verifing writability with badarea_io.
-	find $proc_dirs \
-		-ignore_readdir_race \
-		-type f \
-		-not -name force_lbug \
-		-not -name changelog_mask \
-		-exec badarea_io '{}' \; ||
-			error_133 "find $proc_dirs failed"
+	$LCTL list_param -FR '*' | grep '=' | tr -d = |
+		egrep -v 'force_lbug|changelog_mask' | xargs badarea_io ||
+		error "client badarea_io failed"
+
+	# remount the FS in case writes/reads /proc break the FS
+	cleanup || error "failed to unmount"
+	setup || error "failed to setup"
 }
 run_test 133f "Check reads/writes of client lustre proc files with bad area io"
 
@@ -12500,10 +13046,10 @@ test_133g() {
 			log "$facet: too old lustre for get_param -R"
 		fi
 		if [ $facet_ver -ge $(version_code 2.5.54) ]; then
-			do_facet $facet "$LCTL list_param -R '*' | grep '=' |
-				tr -d= | egrep -v 'force_lbug|changelog_mask' |
+			do_facet $facet "$LCTL list_param -FR '*' | grep '=' |
+				tr -d = | egrep -v 'force_lbug|changelog_mask' |
 				xargs badarea_io" ||
-					error_133 "$facet badarea_io failed"
+					error "$facet badarea_io failed"
 		else
 			skip_noexit "$facet: too old lustre for get_param -R"
 		fi
@@ -12512,7 +13058,6 @@ test_133g() {
 	# remount the FS in case writes/reads /proc break the FS
 	cleanup || error "failed to unmount"
 	setup || error "failed to setup"
-	true
 }
 run_test 133g "Check reads/writes of server lustre proc files with bad area io"
 
@@ -12523,24 +13068,21 @@ test_133h() {
 		skip "Need MDS version at least 2.9.54"
 
 	local facet
-
 	for facet in client mds1 ost1; do
-		local facet_proc_dirs=$(do_facet $facet \
-					\\\ls -d $proc_regexp 2> /dev/null)
-		[ -z "$facet_proc_dirs" ] && error "no proc_dirs on $facet"
-		echo "${facet}_proc_dirs='$facet_proc_dirs'"
 		# Get the list of files that are missing the terminating newline
-		local missing=($(do_facet $facet \
-			find ${facet_proc_dirs} -type f \|		\
-				while read F\; do			\
-					awk -v FS='\v' -v RS='\v\v'	\
-					"'END { if(NR>0 &&		\
-					\\\$NF !~ /.*\\\n\$/)		\
-						print FILENAME}'"	\
-					'\$F'\;				\
-				done 2>/dev/null))
-		[ ${#missing[*]} -eq 0 ] ||
-			error "files do not end with newline: ${missing[*]}"
+		local plist=$(do_facet $facet
+			$LCTL list_param -FR '*' | grep '=' | tr -d =)
+		local ent
+		for ent in $plist; do
+			local missing=$(do_facet $facet $LCTL get_param $ent \|\
+				awk -v FS='\v' -v RS='\v\v' \
+				"'END { if(NR>0 && \\\$NF !~ /.*\\\n\$/) \
+					print FILENAME}'" 2>/dev/null)
+			[ -z $missing ] || {
+				do_facet $facet $LCTL get_param $ent | od -An -tx1
+				error "file does not end with newline: $facet-$ent"
+			}
+		done
 	done
 }
 run_test 133h "Proc files should end with newlines"
@@ -12659,7 +13201,7 @@ test_136() {
 	local fname
 
 	mkdir -p $DIR/$tdir || error "failed to create $DIR/$tdir"
-	$SETSTRIPE -c 1 -i 0 $DIR/$tdir || error "failed to set striping"
+	$LFS setstripe -c 1 -i 0 $DIR/$tdir || error "failed to set striping"
 	#set only one record at plain llog
 #define OBD_FAIL_CATALOG_FULL_CHECK                0x131a
 	do_facet $SINGLEMDS $LCTL set_param fail_loc=0x131a fail_val=1
@@ -12729,7 +13271,7 @@ test_140() { #bug-17379
 }
 run_test 140 "Check reasonable stack depth (shouldn't LBUG) ===="
 
-test_150() {
+test_150a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
 	local TF="$TMP/$tfile"
@@ -12760,7 +13302,60 @@ test_150() {
 	rm -f $TF
 	true
 }
-run_test 150 "truncate/append tests"
+run_test 150a "truncate/append tests"
+
+test_150b() {
+	[ "$ost1_FSTYPE" != ldiskfs ] && skip "non-ldiskfs backend"
+	[ $OST1_VERSION -lt $(version_code 2.13.50) ] &&
+		skip "Need OST version at least 2.13.53"
+	touch $DIR/$tfile
+	check_fallocate $DIR/$tfile || error "fallocate failed"
+}
+run_test 150b "Verify fallocate (prealloc) functionality"
+
+test_150c() {
+	local bytes
+	local want
+
+	[ "$ost1_FSTYPE" != ldiskfs ] && skip "non-ldiskfs backend"
+	[ $OST1_VERSION -lt $(version_code 2.13.50) ] &&
+		skip "Need OST version at least 2.13.53"
+
+	$LFS setstripe -c $OSTCOUNT -S1M $DIR/$tdir || error "setstripe failed"
+	fallocate -l ${OSTCOUNT}m $DIR/$tdir || error "fallocate failed"
+	sync; sync_all_data
+	cancel_lru_locks $OSC
+	sleep 5
+	bytes=$(($(stat -c '%b * %B' $DIR/$tdir)))
+	want=$((OSTCOUNT * 1048576))
+
+	# Must allocate all requested space, not more than 5% extra
+	(( $bytes >= $want && $bytes < $want * 105 / 100 )) ||
+		error "bytes $bytes is not $want"
+}
+run_test 150c "Verify fallocate Size and Blocks"
+
+test_150d() {
+	local bytes
+	local want
+
+	[ "$ost1_FSTYPE" != ldiskfs ] && skip "non-ldiskfs backend"
+	[ $OST1_VERSION -lt $(version_code 2.13.50) ] &&
+		skip "Need OST version at least 2.13.53"
+
+	$LFS setstripe -c $OSTCOUNT -S1M $DIR/$tdir || error "setstripe failed"
+	fallocate -o 1G -l ${OSTCOUNT}m $DIR/$tdir || error "fallocate failed"
+	sync; sync_all_data
+	cancel_lru_locks $OSC
+	sleep 5
+	bytes=$(($(stat -c '%b * %B' $DIR/$tdir)))
+	want=$((OSTCOUNT * 1048576))
+
+	# Must allocate all requested space, not more than 5% extra
+	(( $bytes >= $want && $bytes < $want * 105 / 100 )) ||
+		error "bytes $bytes is not $want"
+}
+run_test 150d "Verify fallocate Size and Blocks - Non zero start"
 
 #LU-2902 roc_hit was not able to read all values from lproc
 function roc_hit_init() {
@@ -13047,10 +13642,19 @@ test_154A() {
 	[ -z "$fid" ] && error "path2fid unable to get $tf FID"
 
 	# check that we get the same pathname back
-	local found=$($LFS fid2path $MOUNT "$fid")
-	[ -z "$found" ] && error "fid2path unable to get '$fid' path"
-	[ "$found" == "$tf" ] ||
-		error "fid2path($fid=path2fid($tf)) = $found != $tf"
+	local rootpath
+	local found
+	for rootpath in "$MOUNT" "$MOUNT///" "$MOUNT/$tfile"; do
+		echo "$rootpath $fid"
+		found=$($LFS fid2path $rootpath "$fid")
+		[ -z "$found" ] && error "fid2path unable to get '$fid' path"
+		[ "$found" == "$tf" ] || error "fid2path $found != $tf"
+	done
+
+	# check wrong root path format
+	rootpath=$MOUNT"_wrong"
+	found=$($LFS fid2path $rootpath "$fid")
+	[ -z "$found" ] || error "should fail ($rootpath != $MOUNT)"
 }
 run_test 154A "lfs path2fid and fid2path basic checks"
 
@@ -13872,7 +14476,9 @@ test_160f() {
 	local i
 
 	# generate some changelog records to accumulate on each MDT
-	test_mkdir -c $MDSCOUNT $DIR/$tdir || error "test_mkdir $tdir failed"
+	# use fnv1a because created files should be evenly distributed
+	test_mkdir -c $MDSCOUNT -H fnv_1a_64 $DIR/$tdir ||
+		error "test_mkdir $tdir failed"
 	log "$(date +%s): creating first files"
 	createmany -m $DIR/$tdir/$tfile $((MDSCOUNT * 2)) ||
 		error "create $DIR/$tdir/$tfile failed"
@@ -13998,7 +14604,9 @@ test_160g() {
 	local i
 
 	# generate some changelog records to accumulate on each MDT
-	test_mkdir -c $MDSCOUNT $DIR/$tdir || error "mkdir $tdir failed"
+	# use fnv1a because created files should be evenly distributed
+	test_mkdir -c $MDSCOUNT -H fnv_1a_64 $DIR/$tdir ||
+		error "mkdir $tdir failed"
 	createmany -m $DIR/$tdir/$tfile $((MDSCOUNT * 2)) ||
 		error "create $DIR/$tdir/$tfile failed"
 
@@ -14112,7 +14720,9 @@ test_160h() {
 	local i
 
 	# generate some changelog records to accumulate on each MDT
-	test_mkdir -c $MDSCOUNT $DIR/$tdir || error "test_mkdir $tdir failed"
+	# use fnv1a because created files should be evenly distributed
+	test_mkdir -c $MDSCOUNT -H fnv_1a_64 $DIR/$tdir ||
+		error "test_mkdir $tdir failed"
 	createmany -m $DIR/$tdir/$tfile $((MDSCOUNT * 2)) ||
 		error "create $DIR/$tdir/$tfile failed"
 
@@ -14261,7 +14871,9 @@ test_160i() {
 	changelog_register || error "first changelog_register failed"
 
 	# generate some changelog records to accumulate on each MDT
-	test_mkdir -c $MDSCOUNT $DIR/$tdir || error "mkdir $tdir failed"
+	# use fnv1a because created files should be evenly distributed
+	test_mkdir -c $MDSCOUNT -H fnv_1a_64 $DIR/$tdir ||
+		error "mkdir $tdir failed"
 	createmany -m $DIR/$tdir/$tfile $((MDSCOUNT * 2)) ||
 		error "create $DIR/$tdir/$tfile failed"
 
@@ -14326,7 +14938,9 @@ test_160j() {
 	stack_trap "changelog_deregister" EXIT
 
 	# generate some changelog
-	test_mkdir -c $MDSCOUNT $DIR/$tdir || error "mkdir $tdir failed"
+	# use fnv1a because created files should be evenly distributed
+	test_mkdir -c $MDSCOUNT -H fnv_1a_64 $DIR/$tdir ||
+		error "mkdir $tdir failed"
 	createmany -m $DIR/$tdir/${tfile}bis $((MDSCOUNT * 2)) ||
 		error "create $DIR/$tdir/${tfile}bis failed"
 
@@ -14349,7 +14963,6 @@ test_160j() {
 		error "User $cl_user not found in changelog_users"
 
 	printf 'clear:'$cl_user':0' >&3
-
 }
 run_test 160j "client can be umounted  while its chanangelog is being used"
 
@@ -14708,6 +15321,233 @@ test_162c() {
 }
 run_test 162c "fid2path works with paths 100 or more directories deep"
 
+oalr_event_count() {
+	local event="${1}"
+	local trace="${2}"
+
+	awk -v name="${FSNAME}-OST0000" \
+	    -v event="${event}" \
+	    '$1 == "TRACE" && $2 == event && $3 == name' \
+	    "${trace}" |
+	wc -l
+}
+
+oalr_expect_event_count() {
+	local event="${1}"
+	local trace="${2}"
+	local expect="${3}"
+	local count
+
+	count=$(oalr_event_count "${event}" "${trace}")
+	if ((count == expect)); then
+		return 0
+	fi
+
+	error_noexit "${event} event count was '${count}', expected ${expect}"
+	cat "${trace}" >&2
+	exit 1
+}
+
+cleanup_165() {
+	do_facet ost1 killall --quiet -KILL ofd_access_log_reader || true
+	stop ost1
+	start ost1 "$(ostdevname 1)" $OST_MOUNT_OPTS
+}
+
+setup_165() {
+	sync # Flush previous IOs so we can count log entries.
+	do_facet ost1 $LCTL set_param "obdfilter.${FSNAME}-OST0000.access_log_size=4096"
+	stack_trap cleanup_165 EXIT
+}
+
+test_165a() {
+	local trace="/tmp/${tfile}.trace"
+	local rc
+	local count
+
+	do_facet ost1 ofd_access_log_reader --debug=- --trace=- > "${trace}" &
+	setup_165
+	sleep 5
+
+	do_facet ost1 ofd_access_log_reader --list
+	stop ost1
+
+	do_facet ost1 killall -TERM ofd_access_log_reader
+	wait
+	rc=$?
+
+	if ((rc != 0)); then
+		error "ofd_access_log_reader exited with rc = '${rc}'"
+	fi
+
+	# Parse trace file for discovery events:
+	oalr_expect_event_count alr_log_add "${trace}" 1
+	oalr_expect_event_count alr_log_eof "${trace}" 1
+	oalr_expect_event_count alr_log_free "${trace}" 1
+}
+run_test 165a "ofd access log discovery"
+
+test_165b() {
+	local trace="/tmp/${tfile}.trace"
+	local file="${DIR}/${tfile}"
+	local pfid1
+	local pfid2
+	local -a entry
+	local rc
+	local count
+	local size
+	local flags
+
+	setup_165
+
+	lfs setstripe -c 1 -i 0 "${file}"
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_WRONLY:w1048576c || error "cannot create '${file}'"
+	do_facet ost1 ofd_access_log_reader --list
+
+	do_facet ost1 ofd_access_log_reader --debug=- --trace=- > "${trace}" &
+	sleep 5
+	do_facet ost1 killall -TERM ofd_access_log_reader
+	wait
+	rc=$?
+
+	if ((rc != 0)); then
+		error "ofd_access_log_reader exited with rc = '${rc}'"
+	fi
+
+	oalr_expect_event_count alr_log_entry "${trace}" 1
+
+	pfid1=$($LFS path2fid "${file}")
+
+	# 1     2             3   4    5     6   7    8    9     10
+	# TRACE alr_log_entry OST PFID BEGIN END TIME SIZE COUNT FLAGS
+	entry=( - $(awk -v pfid="${pfid}" '$1 == "TRACE" && $2 == "alr_log_entry"' "${trace}" ) )
+
+	echo "entry = '${entry[*]}'" >&2
+
+	pfid2=${entry[4]}
+	if [[ "${pfid1}" != "${pfid2}" ]]; then
+		error "entry '${entry[*]}' has invalid PFID '${pfid2}', expected ${pfid1}"
+	fi
+
+	size=${entry[8]}
+	if ((size != 1048576)); then
+		error "entry '${entry[*]}' has invalid io size '${size}', expected 1048576"
+	fi
+
+	flags=${entry[10]}
+	if [[ "${flags}" != "w" ]]; then
+		error "entry '${entry[*]}' has invalid io flags '${flags}', expected 'w'"
+	fi
+
+	do_facet ost1 ofd_access_log_reader --debug=- --trace=- > "${trace}" &
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_RDONLY:r524288c || error "cannot read '${file}'"
+	sleep 5
+	do_facet ost1 killall -TERM ofd_access_log_reader
+	wait
+	rc=$?
+
+	if ((rc != 0)); then
+		error "ofd_access_log_reader exited with rc = '${rc}'"
+	fi
+
+	oalr_expect_event_count alr_log_entry "${trace}" 1
+
+	entry=( - $(awk -v pfid="${pfid}" '$1 == "TRACE" && $2 == "alr_log_entry"' "${trace}" ) )
+	echo "entry = '${entry[*]}'" >&2
+
+	pfid2=${entry[4]}
+	if [[ "${pfid1}" != "${pfid2}" ]]; then
+		error "entry '${entry[*]}' has invalid PFID '${pfid2}', expected ${pfid1}"
+	fi
+
+	size=${entry[8]}
+	if ((size != 524288)); then
+		error "entry '${entry[*]}' has invalid io size '${size}', 524288"
+	fi
+
+	flags=${entry[10]}
+	if [[ "${flags}" != "r" ]]; then
+		error "entry '${entry[*]}' has invalid io flags '${flags}', expected 'r'"
+	fi
+}
+run_test 165b "ofd access log entries are produced and consumed"
+
+test_165c() {
+	local file="${DIR}/${tdir}/${tfile}"
+	test_mkdir "${DIR}/${tdir}"
+
+	setup_165
+
+	lfs setstripe -c 1 -i 0 "${DIR}/${tdir}"
+
+	# 4096 / 64 = 64. Create twice as many entries.
+	for ((i = 0; i < 128; i++)); do
+		$MULTIOP "${file}-${i}" oO_CREAT:O_WRONLY:w512c || error "cannot create file"
+	done
+
+	sync
+	do_facet ost1 ofd_access_log_reader --list
+	unlinkmany  "${file}-%d" 128
+}
+run_test 165c "full ofd access logs do not block IOs"
+
+oal_peek_entry_count() {
+	do_facet ost1 ofd_access_log_reader --list | awk '$1 == "_entry_count:" { print $2; }'
+}
+
+oal_expect_entry_count() {
+	local entry_count=$(oal_peek_entry_count)
+	local expect="$1"
+
+	if ((entry_count == expect)); then
+		return 0
+	fi
+
+	error_noexit "bad entry count, got ${entry_count}, expected ${expect}"
+	do_facet ost1 ofd_access_log_reader --list >&2
+	exit 1
+}
+
+test_165d() {
+	local trace="/tmp/${tfile}.trace"
+	local file="${DIR}/${tdir}/${tfile}"
+	local param="obdfilter.${FSNAME}-OST0000.access_log_mask"
+	local entry_count
+	test_mkdir "${DIR}/${tdir}"
+
+	setup_165
+	lfs setstripe -c 1 -i 0 "${file}"
+
+	do_facet ost1 lctl set_param "${param}=rw"
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_WRONLY:w1048576c || error "cannot create '${file}'"
+	oal_expect_entry_count 1
+
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_RDONLY:r1048576c || error "cannot read '${file}'"
+	oal_expect_entry_count 2
+
+	do_facet ost1 lctl set_param "${param}=r"
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_WRONLY:w1048576c || error "cannot create '${file}'"
+	oal_expect_entry_count 2
+
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_RDONLY:r1048576c || error "cannot read '${file}'"
+	oal_expect_entry_count 3
+
+	do_facet ost1 lctl set_param "${param}=w"
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_WRONLY:w1048576c || error "cannot create '${file}'"
+	oal_expect_entry_count 4
+
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_RDONLY:r1048576c || error "cannot read '${file}'"
+	oal_expect_entry_count 4
+
+	do_facet ost1 lctl set_param "${param}=0"
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_WRONLY:w1048576c || error "cannot create '${file}'"
+	oal_expect_entry_count 4
+
+	$MULTIOP "${file}" oO_CREAT:O_DIRECT:O_RDONLY:r1048576c || error "cannot read '${file}'"
+	oal_expect_entry_count 4
+}
+run_test 165d "ofd_access_log mask works"
+
 test_169() {
 	# do directio so as not to populate the page cache
 	log "creating a 10 Mb file"
@@ -15647,16 +16487,20 @@ test_205a() { # Job stats
 }
 run_test 205a "Verify job stats"
 
-# LU-13117
+# LU-13117, LU-13597
 test_205b() {
+	job_stats="mdt.*.job_stats"
+	$LCTL set_param $job_stats=clear
 	$LCTL set_param jobid_var=USER jobid_name="%e.%u"
 	env -i USERTESTJOBSTATS=foolish touch $DIR/$tfile.1
-	do_facet $SINGLEMDS $LCTL get_param mdt.*.job_stats |
-		grep job_id: | grep foolish &&
+	do_facet $SINGLEMDS $LCTL get_param $job_stats |
+		grep "job_id:.*foolish" &&
 			error "Unexpected jobid found"
-	true
+	do_facet $SINGLEMDS $LCTL get_param $job_stats |
+		grep "open:.*min.*max.*sum" ||
+			error "wrong job_stats format found"
 }
-run_test 205b "Verify job stats jobid parsing"
+run_test 205b "Verify job stats jobid and output format"
 
 # LU-1480, LU-1773 and LU-1657
 test_206() {
@@ -15781,6 +16625,27 @@ test_209() {
 }
 run_test 209 "read-only open/close requests should be freed promptly"
 
+test_210() {
+	local pid
+
+	$MULTIOP $DIR/$tfile oO_CREAT:O_RDWR:eW_E+eUc &
+	pid=$!
+	sleep 1
+
+	$LFS getstripe $DIR/$tfile
+	kill -USR1 $pid
+	wait $pid || error "multiop failed"
+
+	$MULTIOP $DIR/$tfile oO_RDONLY:eR_E+eUc &
+	pid=$!
+	sleep 1
+
+	$LFS getstripe $DIR/$tfile
+	kill -USR1 $pid
+	wait $pid || error "multiop failed"
+}
+run_test 210 "lfs getstripe does not break leases"
+
 test_212() {
 	size=`date +%s`
 	size=$((size % 8192 + 1))
@@ -16602,6 +17467,27 @@ test_230b() {
 	ln -s $migrate_dir/$tfile $migrate_dir/${tfile}_ln
 	ln -s $other_dir/$tfile $migrate_dir/${tfile}_ln_other
 
+	local len
+	local lnktgt
+
+	# inline symlink
+	for len in 58 59 60; do
+		lnktgt=$(str_repeat 'l' $len)
+		touch $migrate_dir/$lnktgt
+		ln -s $lnktgt $migrate_dir/${len}char_ln
+	done
+
+	# PATH_MAX
+	for len in 4094 4095; do
+		lnktgt=$(str_repeat 'l' $len)
+		ln -s $lnktgt $migrate_dir/${len}char_ln
+	done
+
+	# NAME_MAX
+	for len in 254 255; do
+		touch $migrate_dir/$(str_repeat 'l' $len)
+	done
+
 	$LFS migrate -m $MDTIDX $migrate_dir ||
 		error "fails on migrating remote dir to MDT1"
 
@@ -16609,7 +17495,8 @@ test_230b() {
 	for ((i = 0; i < 10; i++)); do
 		for file in $(find $migrate_dir/dir_${i}); do
 			mdt_index=$($LFS getstripe -m $file)
-			[ $mdt_index == $MDTIDX ] ||
+			# broken symlink getstripe will fail
+			[ $mdt_index -ne $MDTIDX ] && stat -L $file &&
 				error "$file is not on MDT${MDTIDX}"
 		done
 	done
@@ -16673,7 +17560,7 @@ test_230b() {
 	echo "migrate back to MDT0, checking.."
 	for file in $(find $migrate_dir); do
 		mdt_index=$($LFS getstripe -m $file)
-		[ $mdt_index == $MDTIDX ] ||
+		[ $mdt_index -ne $MDTIDX ] && stat -L $file &&
 			error "$file is not on MDT${MDTIDX}"
 	done
 
@@ -16827,7 +17714,7 @@ test_230d() {
 	old_count=$((MDSCOUNT - old_index))
 	new_index=$((RANDOM % MDSCOUNT))
 	new_count=$((MDSCOUNT - new_index))
-	new_hash="all_char"
+	new_hash=1 # for all_char
 
 	[ $old_count -gt 1 ] && old_count=$((old_count - RANDOM % old_count))
 	[ $new_count -gt 1 ] && new_count=$((new_count - RANDOM % new_count))
@@ -17019,7 +17906,7 @@ run_test 230i "lfs migrate -m tolerates trailing slashes"
 
 test_230j() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
-	[ $MDS1_VERSION -lt $(version_code 2.11.52) ] &&
+	[ $MDS1_VERSION -lt $(version_code 2.13.52) ] &&
 		skip "Need MDS version at least 2.11.52"
 
 	$LFS mkdir -m 0 -c 1 $DIR/$tdir || error "mkdir $tdir failed"
@@ -17027,7 +17914,7 @@ test_230j() {
 		error "create $tfile failed"
 	cat /etc/passwd > $DIR/$tdir/$tfile
 
-	$LFS migrate -m 1 $DIR/$tdir
+	$LFS migrate -m 1 $DIR/$tdir || error "migrate failed"
 
 	cmp /etc/passwd $DIR/$tdir/$tfile ||
 		error "DoM file mismatch after migration"
@@ -17151,6 +18038,171 @@ test_230m() {
 }
 run_test 230m "xattrs not changed after dir migration"
 
+test_230n() {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
+	[[ $MDS1_VERSION -ge $(version_code 2.13.53) ]] ||
+		skip "Need MDS version at least 2.13.53"
+
+	$LFS mkdir -i 0 $DIR/$tdir || error "mkdir $tdir failed"
+	cat /etc/hosts > $DIR/$tdir/$tfile
+	$LFS mirror extend -N1 $DIR/$tdir/$tfile || error "Mirroring failed"
+	$LFS migrate -m 1 $DIR/$tdir || error "Migration failed"
+
+	cmp /etc/hosts $DIR/$tdir/$tfile ||
+		error "File data mismatch after migration"
+}
+run_test 230n "Dir migration with mirrored file"
+
+test_230o() {
+	[ $MDSCOUNT -ge 2 ] || skip "needs >= 2 MDTs"
+	[ $MDS1_VERSION -ge $(version_code 2.13.52) ] ||
+		skip "Need MDS version at least 2.13.52"
+
+	local mdts=$(comma_list $(mdts_nodes))
+
+	local restripe_status
+	local delta
+	local i
+	local j
+
+	# in case "crush" hash type is not set
+	do_nodes $mdts "$LCTL set_param lod.*.mdt_hash=crush"
+
+	restripe_status=$(do_facet mds1 $LCTL get_param -n \
+			   mdt.*MDT0000.enable_dir_restripe)
+	do_nodes $mdts "$LCTL set_param mdt.*.enable_dir_restripe=1"
+	stack_trap "do_nodes $mdts $LCTL set_param \
+		    mdt.*.enable_dir_restripe=$restripe_status"
+
+	mkdir $DIR/$tdir
+	createmany -m $DIR/$tdir/f 100 ||
+		error "create files under remote dir failed $i"
+	createmany -d $DIR/$tdir/d 100 ||
+		error "create dirs under remote dir failed $i"
+
+	for i in $(seq 2 $MDSCOUNT); do
+		do_nodes $mdts "$LCTL set_param mdt.*.md_stats=clear > /dev/null"
+		$LFS setdirstripe -c $i $DIR/$tdir ||
+			error "split -c $i $tdir failed"
+		wait_update $HOSTNAME \
+			"$LFS getdirstripe -H $DIR/$tdir" "crush" 100 ||
+			error "dir split not finished"
+		delta=$(do_nodes $mdts "lctl get_param -n mdt.*MDT*.md_stats" |
+			awk '/migrate/ {sum += $2} END { print sum }')
+		echo "$delta files migrated when dir split from $((i - 1)) to $i stripes"
+		# delta is around total_files/stripe_count
+		[ $delta -lt $((200 /(i - 1))) ] ||
+			error "$delta files migrated"
+	done
+}
+run_test 230o "dir split"
+
+test_230p() {
+	[ $MDSCOUNT -ge 2 ] || skip "needs >= 2 MDTs"
+	[ $MDS1_VERSION -ge $(version_code 2.13.52) ] ||
+		skip "Need MDS version at least 2.13.52"
+
+	local mdts=$(comma_list $(mdts_nodes))
+
+	local restripe_status
+	local delta
+	local i
+	local j
+
+	do_nodes $mdts "$LCTL set_param lod.*.mdt_hash=crush"
+
+	restripe_status=$(do_facet mds1 $LCTL get_param -n \
+			   mdt.*MDT0000.enable_dir_restripe)
+	do_nodes $mdts "$LCTL set_param mdt.*.enable_dir_restripe=1"
+	stack_trap "do_nodes $mdts $LCTL set_param \
+		    mdt.*.enable_dir_restripe=$restripe_status"
+
+	test_mkdir -c $MDSCOUNT -H crush $DIR/$tdir
+	createmany -m $DIR/$tdir/f 100 ||
+		error "create files under remote dir failed $i"
+	createmany -d $DIR/$tdir/d 100 ||
+		error "create dirs under remote dir failed $i"
+
+	for i in $(seq $((MDSCOUNT - 1)) -1 1); do
+		local mdt_hash="crush"
+
+		do_nodes $mdts "$LCTL set_param mdt.*.md_stats=clear > /dev/null"
+		$LFS setdirstripe -c $i $DIR/$tdir ||
+			error "split -c $i $tdir failed"
+		[ $i -eq 1 ] && mdt_hash="none"
+		wait_update $HOSTNAME \
+			"$LFS getdirstripe -H $DIR/$tdir" $mdt_hash 100 ||
+			error "dir merge not finished"
+		delta=$(do_nodes $mdts "lctl get_param -n mdt.*MDT*.md_stats" |
+			awk '/migrate/ {sum += $2} END { print sum }')
+		echo "$delta files migrated when dir merge from $((i + 1)) to $i stripes"
+		# delta is around total_files/stripe_count
+		[ $delta -lt $((200 / i)) ] ||
+			error "$delta files migrated"
+	done
+}
+run_test 230p "dir merge"
+
+test_230q() {
+	[ $MDSCOUNT -ge 2 ] || skip "needs >= 2 MDTs"
+	[ $MDS1_VERSION -ge $(version_code 2.13.52) ] ||
+		skip "Need MDS version at least 2.13.52"
+
+	local mdts=$(comma_list $(mdts_nodes))
+	local saved_threshold=$(do_facet mds1 \
+			$LCTL get_param -n mdt.*-MDT0000.dir_split_count)
+	local saved_delta=$(do_facet mds1 \
+			$LCTL get_param -n mdt.*-MDT0000.dir_split_delta)
+	local threshold=100
+	local delta=2
+	local total=0
+	local stripe_count=0
+	local stripe_index
+	local nr_files
+
+	stack_trap "do_nodes $mdts $LCTL set_param \
+		    mdt.*.dir_split_count=$saved_threshold"
+	stack_trap "do_nodes $mdts $LCTL set_param \
+		    mdt.*.dir_split_delta=$saved_delta"
+	stack_trap "do_nodes $mdts $LCTL set_param mdt.*.dir_restripe_nsonly=1"
+	do_nodes $mdts "$LCTL set_param mdt.*.enable_dir_auto_split=1"
+	do_nodes $mdts "$LCTL set_param mdt.*.dir_split_count=$threshold"
+	do_nodes $mdts "$LCTL set_param mdt.*.dir_split_delta=$delta"
+	do_nodes $mdts "$LCTL set_param mdt.*.dir_restripe_nsonly=0"
+	do_nodes $mdts "$LCTL set_param lod.*.mdt_hash=crush"
+
+	$LFS mkdir -i -1 -c 1 $DIR/$tdir || error "mkdir $tdir failed"
+	stripe_index=$($LFS getdirstripe -i $DIR/$tdir)
+
+	while [ $stripe_count -lt $MDSCOUNT ]; do
+		createmany -m $DIR/$tdir/f $total $((threshold * 3 / 2)) ||
+			error "create sub files failed"
+		stat $DIR/$tdir > /dev/null
+		total=$((total + threshold * 3 / 2))
+		stripe_count=$((stripe_count + delta))
+		[ $stripe_count -gt $MDSCOUNT ] && stripe_count=$MDSCOUNT
+
+		wait_update $HOSTNAME \
+			"$LFS getdirstripe -c $DIR/$tdir" "$stripe_count" 40 ||
+			error "stripe count $($LFS getdirstripe -c $DIR/$tdir) != $stripe_count"
+
+		wait_update $HOSTNAME \
+			"$LFS getdirstripe -H $DIR/$tdir" "crush" 200 ||
+			error "stripe hash $($LFS getdirstripe -H $DIR/$tdir) != crush"
+
+		nr_files=$($LFS getstripe -m $DIR/$tdir/* |
+			   grep -w $stripe_index | wc -l)
+		echo "$nr_files files on MDT$stripe_index after split"
+		[ $nr_files -lt $((total / (stripe_count - 1))) ] ||
+			error "$nr_files files on MDT$stripe_index after split"
+
+		nr_files=$(ls $DIR/$tdir | wc -w)
+		[ $nr_files -eq $total ] ||
+			error "total sub files $nr_files != $total"
+	done
+}
+run_test 230q "dir auto split"
+
 test_231a()
 {
 	# For simplicity this test assumes that max_pages_per_rpc
@@ -17612,7 +18664,7 @@ test_247c() {
 	$LFS fid2path $submount $fid && error "fid2path should fail"
 	cleanup_247 $submount
 }
-run_test 247c "running fid2path outside root"
+run_test 247c "running fid2path outside subdirectory root"
 
 test_247d() {
 	lctl get_param -n mdc.$FSNAME-MDT0000*.import | grep -q subtree ||
@@ -17625,11 +18677,28 @@ test_247d() {
 	FILESET="$FILESET/$tdir" mount_client $submount ||
 		error "mount $submount failed"
 	trap "cleanup_247 $submount" EXIT
-	local fid=$($LFS path2fid $submount/dir1)
-	$LFS fid2path $submount $fid || error "fid2path should succeed"
+
+	local td=$submount/dir1
+	local fid=$($LFS path2fid $td)
+	[ -z "$fid" ] && error "path2fid unable to get $td FID"
+
+	# check that we get the same pathname back
+	local rootpath
+	local found
+	for rootpath in "$submount" "$submount///" "$submount/dir1"; do
+		echo "$rootpath $fid"
+		found=$($LFS fid2path $rootpath "$fid")
+		[ -n "found" ] || error "fid2path should succeed"
+		[ "$found" == "$td" ] || error "fid2path $found != $td"
+	done
+	# check wrong root path format
+	rootpath=$submount"_wrong"
+	found=$($LFS fid2path $rootpath "$fid")
+	[ -z "$found" ] || error "fid2path should fail ($rootpath != $submount)"
+
 	cleanup_247 $submount
 }
-run_test 247d "running fid2path inside root"
+run_test 247d "running fid2path inside subdirectory root"
 
 # LU-8037
 test_247e() {
@@ -17647,6 +18716,38 @@ test_247e() {
 }
 run_test 247e "mount .. as fileset"
 
+test_247f() {
+	[ $MDSCOUNT -lt 2 ] && skip_env "needs >= 2 MDTs"
+	[ $MDS1_VERSION -lt $(version_code 2.13.52) ] &&
+		skip "Need at least version 2.13.52"
+	lctl get_param -n mdc.$FSNAME-MDT0000*.import |
+		grep -q subtree ||
+		skip "Fileset feature is not supported"
+
+	mkdir $DIR/$tdir || error "mkdir $tdir failed"
+	$LFS mkdir -i $((MDSCOUNT - 1)) $DIR/$tdir/remote ||
+		error "mkdir remote failed"
+	mkdir $DIR/$tdir/remote/subdir || error "mkdir remote/subdir failed"
+	$LFS mkdir -c $MDSCOUNT $DIR/$tdir/striped ||
+		error "mkdir striped failed"
+	mkdir $DIR/$tdir/striped/subdir || error "mkdir striped/subdir failed"
+
+	local submount=${MOUNT}_$tdir
+
+	mkdir -p $submount || error "mkdir $submount failed"
+
+	local dir
+	local fileset=$FILESET
+
+	for dir in $tdir/remote $tdir/remote/subdir \
+		   $tdir/striped $tdir/striped/subdir $tdir/striped/. ; do
+		FILESET="$fileset/$dir" mount_client $submount ||
+			error "mount $dir failed"
+		umount_client $submount
+	done
+}
+run_test 247f "mount striped or remote directory as fileset"
+
 test_248a() {
 	local fast_read_sav=$($LCTL get_param -n llite.*.fast_read 2>/dev/null)
 	[ -z "$fast_read_sav" ] && skip "no fast read support"
@@ -18801,6 +19902,101 @@ test_270f() {
 }
 run_test 270f "DoM: maximum DoM stripe size checks"
 
+test_270g() {
+	[ $MDS1_VERSION -ge $(version_code 2.13.52) ] ||
+		skip "Need MDS version at least 2.13.52"
+	local dom=$DIR/$tdir/$tfile
+
+	$LFS mkdir -i 0 -c 1 $DIR/$tdir
+	local lodname=${FSNAME}-MDT0000-mdtlov
+
+	local save="$TMP/$TESTSUITE-$TESTNAME.parameters"
+	save_lustre_params mds1 "lod.${lodname}.dom_stripesize_max_kb" > $save
+	save_lustre_params mds1 "lod.${lodname}.dom_threshold_free_mb" >> $save
+	stack_trap "restore_lustre_params < $save; rm -f $save" EXIT
+
+	local dom_limit=1024
+	local dom_threshold="50%"
+
+	$LFS setstripe -d $DIR/$tdir
+	$LFS setstripe -E ${dom_limit}K -L mdt $DIR/$tdir ||
+		error "Can't set directory default striping"
+
+	do_facet mds1 $LCTL set_param -n \
+				lod.${lodname}.dom_stripesize_max_kb=$dom_limit
+	# set 0 threshold and create DOM file to change tunable stripesize
+	do_facet mds1 $LCTL set_param -n lod.${lodname}.dom_threshold_free_mb=0
+	$LFS setstripe -E ${dom_limit}K -L mdt -E -1 $dom ||
+		error "Failed to create $dom file"
+	# now tunable dom_cur_stripesize should reach maximum
+	local dom_current=$(do_facet mds1 $LCTL get_param -n \
+					lod.${lodname}.dom_stripesize_cur_kb)
+	[[ $dom_current == $dom_limit ]] ||
+		error "Current DOM stripesize is not maximum"
+	rm $dom
+
+	# set threshold for further tests
+	do_facet mds1 $LCTL set_param -n \
+			lod.${lodname}.dom_threshold_free_mb=$dom_threshold
+	echo "DOM threshold is $dom_threshold free space"
+	local dom_def
+	local dom_set
+	# Spoof bfree to exceed threshold
+	#define OBD_FAIL_MDS_STATFS_SPOOF   0x168
+	do_facet mds1 $LCTL set_param -n fail_loc=0x0168
+	for spfree in 40 20 0 15 30 55; do
+		do_facet mds1 $LCTL set_param -n fail_val=$spfree
+		$LFS setstripe -E ${dom_limit}K -L mdt -E -1 $dom ||
+			error "Failed to create $dom file"
+		dom_def=$(do_facet mds1 $LCTL get_param -n \
+					lod.${lodname}.dom_stripesize_cur_kb)
+		echo "Free space: ${spfree}%, default DOM stripe: ${dom_def}K"
+		[[ $dom_def != $dom_current ]] ||
+			error "Default stripe size was not changed"
+		if [[ $spfree > 0 ]] ; then
+			dom_set=$($LFS getstripe -S $dom)
+			[[ $dom_set == $((dom_def * 1024)) ]] ||
+				error "DOM component size is still old"
+		else
+			[[ $($LFS getstripe -L $dom) != "mdt" ]] ||
+				error "DoM component is set with no free space"
+		fi
+		rm $dom
+		dom_current=$dom_def
+	done
+}
+run_test 270g "DoM: default DoM stripe size depends on free space"
+
+test_270h() {
+	[[ $MDS1_VERSION -ge $(version_code 2.13.53) ]] ||
+		skip "Need MDS version at least 2.13.53"
+
+	local mdtname=${FSNAME}-MDT0000-mdtlov
+	local dom=$DIR/$tdir/$tfile
+	local save="$TMP/$TESTSUITE-$TESTNAME.parameters"
+
+	save_lustre_params mds1 "lod.*.dom_stripesize" > $save
+	stack_trap "restore_lustre_params < $save; rm -f $save" EXIT
+
+	$LFS mkdir -i 0 -c 1 $DIR/$tdir
+	$LFS setstripe -E 1M -c1  -E -1 -c2 ${dom}_1 ||
+		error "can't create OST file"
+	# mirrored file with DOM entry in the second mirror
+	$LFS mirror extend -N -E 1M -L mdt -E eof -c2 ${dom}_1 ||
+		error "can't create mirror with DoM component"
+
+	do_facet mds1 $LCTL set_param -n lod.$mdtname.dom_stripesize=0
+
+	# DOM component in the middle and has other enries in the same mirror,
+	# should succeed but lost DoM component
+	$LFS setstripe --copy=${dom}_1 $dom ||
+		error "Can't create file from OST|DOM mirror layout"
+	# check new file has no DoM layout after all
+	[[ $($LFS getstripe -L $dom) != "mdt" ]] ||
+		error "File has DoM component while DoM is disabled"
+}
+run_test 270h "DoM: DoM stripe removal when disabled on server"
+
 test_271a() {
 	[ $MDS1_VERSION -lt $(version_code 2.10.55) ] &&
 		skip "Need MDS version at least 2.10.55"
@@ -19386,6 +20582,25 @@ test_278() {
 }
 run_test 278 "Race starting MDS between MDTs stop/start"
 
+test_280() {
+	[ $MGS_VERSION -lt $(version_code 2.13.52) ] &&
+		skip "Need MGS version at least 2.13.52"
+	[ $PARALLEL == "yes" ] && skip "skip parallel run"
+	combined_mgs_mds || skip "needs combined MGS/MDT"
+
+	umount_client $MOUNT
+#define OBD_FAIL_MDS_LLOG_UMOUNT_RACE   0x15e
+	do_facet mgs $LCTL set_param fail_loc=0x8000015e fail_val=0
+
+	mount_client $MOUNT &
+	sleep 1
+	stop mgs || error "stop mgs failed"
+	#for a race mgs would crash
+	start mgs $(mgsdevname) $MGS_MOUNT_OPTS || error "start mgs failed"
+	mount_client $MOUNT || error "mount client failed"
+}
+run_test 280 "Race between MGS umount and client llog processing"
+
 cleanup_test_300() {
 	trap 0
 	umask $SAVE_UMASK
@@ -19539,12 +20754,22 @@ test_300d() {
 	#local striped directory
 	$LFS setdirstripe -i 0 -c 2 -H all_char $DIR/$tdir/striped_dir ||
 		error "set striped dir error"
+        #look at the directories for debug purposes
+	ls -l $DIR/$tdir
+	$LFS getdirstripe $DIR/$tdir
+	ls -l $DIR/$tdir/striped_dir
+	$LFS getdirstripe $DIR/$tdir/striped_dir
 	createmany -o $DIR/$tdir/striped_dir/f 10 ||
 		error "create 10 files failed"
 
 	#remote striped directory
 	$LFS setdirstripe -i 1 -c 2 $DIR/$tdir/remote_striped_dir ||
 		error "set striped dir error"
+        #look at the directories for debug purposes
+	ls -l $DIR/$tdir
+	$LFS getdirstripe $DIR/$tdir
+	ls -l $DIR/$tdir/remote_striped_dir
+	$LFS getdirstripe $DIR/$tdir/remote_striped_dir
 	createmany -o $DIR/$tdir/remote_striped_dir/f 10 ||
 		error "create 10 files failed"
 
@@ -20393,7 +21618,7 @@ test_316() {
 	chown nobody $DIR/$tdir/d
 	touch $DIR/$tdir/d/file
 
-	$LFS mv -M1 $DIR/$tdir/d || error "lfs mv failed"
+	$LFS mv -m1 $DIR/$tdir/d || error "lfs mv failed"
 }
 run_test 316 "lfs mv"
 
@@ -20475,9 +21700,8 @@ test_318() {
 			   llite.*.max_read_ahead_async_active 2>/dev/null)
 	[ $max_active -ne 256 ] && error "expected 256 but got $max_active"
 
-	# currently reset to 0 is unsupported, leave it 512 for now.
-	$LCTL set_param llite.*.max_read_ahead_async_active=0 &&
-		error "set max_read_ahead_async_active should fail"
+	$LCTL set_param llite.*.max_read_ahead_async_active=0 ||
+		error "set max_read_ahead_async_active should succeed"
 
 	$LCTL set_param llite.*.max_read_ahead_async_active=512
 	max_active=$($LCTL get_param -n \
@@ -20630,6 +21854,13 @@ test_398c() { # LU-4198
 		--filename=$DIR/$tfile
 	[ $? -eq 0 ] || error "fio mixed read write error"
 
+	echo "AIO with large block size ${size}M"
+	fio --name=rand-rw --rw=randrw --bs=${size}M --direct=1 \
+		--numjobs=1 --fallocate=none --ioengine=libaio \
+		--iodepth=16 --allow_file_create=0 --size=${size}M \
+		--filename=$DIR/$tfile
+	[ $? -eq 0 ] || error "fio large block size failed"
+
 	rm -rf $DIR/$tfile
 	$LCTL set_param debug="$saved_debug"
 }
@@ -20720,6 +21951,10 @@ test_400a() { # LU-1606, was conf-sanity test_74
 	local prefix=/usr/include/lustre
 	local prog
 
+	# Oleg removes c files in his test rig so test if any c files exist
+	[ -z "$(ls -A $LUSTRE_TESTS_API_DIR)" ] && \
+		skip_env "Needed c test files are missing"
+
 	if ! [[ -d $prefix ]]; then
 		# Assume we're running in tree and fixup the include path.
 		extra_flags+=" -I$LUSTRE/../lnet/include/uapi -I$LUSTRE/include/uapi -I$LUSTRE/include"
@@ -20727,7 +21962,7 @@ test_400a() { # LU-1606, was conf-sanity test_74
 	fi
 
 	for prog in $LUSTRE_TESTS_API_DIR/*.c; do
-		$CC -Wall -Werror $extra_flags -o $out $prog -llustreapi ||
+		$CC -Wall -Werror -std=c99 $extra_flags -o $out $prog -llustreapi ||
 			error "client api broken"
 	done
 	rm -f $out
@@ -20759,7 +21994,7 @@ test_400b() { # LU-1606, LU-5011
 			continue # lustre_ioctl.h is internal header
 		fi
 
-		$CC -Wall -Werror -include $header -c -x c /dev/null -o $out ||
+		$CC -Wall -Werror -std=c99 -include $header -c -x c /dev/null -o $out ||
 			error "cannot compile '$header'"
 	done
 	rm -f $out
@@ -20773,6 +22008,7 @@ test_401a() { #LU-7437
 	#count the number of parameters by "list_param -R"
 	local params=$($LCTL list_param -R '*' 2>/dev/null | wc -l)
 	#count the number of parameters by listing proc files
+	local proc_regexp="/{proc,sys}/{fs,sys,kernel/debug}/{lustre,lnet}/"
 	local proc_dirs=$(eval \ls -d $proc_regexp 2>/dev/null)
 	echo "proc_dirs='$proc_dirs'"
 	[ -n "$proc_dirs" ] || error "no proc_dirs on $HOSTNAME"
@@ -21912,6 +23148,35 @@ test_422() {
 }
 run_test 422 "kill a process with RPC in progress"
 
+stat_test() {
+    df -h $MOUNT &
+    df -h $MOUNT &
+    df -h $MOUNT &
+    df -h $MOUNT &
+    df -h $MOUNT &
+    df -h $MOUNT &
+}
+
+test_423() {
+    local _stats
+    # ensure statfs cache is expired
+    sleep 2;
+
+    _stats=$(stat_test | grep $MOUNT | sort -u | wc -l)
+    [[ ${_stats} -ne 1 ]] && error "statfs wrong"
+
+    return 0
+}
+run_test 423 "statfs should return a right data"
+
+test_424() {
+#define OBD_FAIL_PTLRPC_BULK_REPLY_ATTACH      0x522 | OBD_FAIL_ONCE
+	$LCTL set_param fail_loc=0x80000522
+	dd if=/dev/zero of=$DIR/$tfile bs=2M count=1 oflag=sync
+	rm -f $DIR/$tfile
+}
+run_test 424 "simulate ENOMEM in ptl_send_rpc bulk reply ME attach"
+
 prep_801() {
 	[[ $MDS1_VERSION -lt $(version_code 2.9.55) ]] ||
 	[[ $OST1_VERSION -lt $(version_code 2.9.55) ]] &&
@@ -22389,7 +23654,8 @@ test_805() {
 	do_facet $SINGLEMDS zfs set quota=$(((usedkb+freekb)*1024)) $fsset
 	trap cleanup_805 EXIT
 	mkdir $DIR/$tdir
-	$LFS setstripe -E 1M -L mdt $DIR/$tdir || error "DoM not working"
+	$LFS setstripe -E 1M -c2 -E 4M -c2 -E -1 -c2 $DIR/$tdir ||
+		error "Can't set PFL layout"
 	createmany -m $DIR/$tdir/f- 1000000 && error "ENOSPC wasn't met"
 	rm -rf $DIR/$tdir || error "not able to remove"
 	do_facet $SINGLEMDS zfs set quota=$old $fsset
@@ -22541,7 +23807,7 @@ test_807() {
 		error "truncate $tdir/trunc failed"
 
 	local bs=1048576
-	dd if=/dev/zero of=$DIR/$tdir/single_dd bs=$bs count=1 ||
+	dd if=/dev/zero of=$DIR/$tdir/single_dd bs=$bs count=1 conv=fsync ||
 		error "write $tfile failed"
 
 	# multi-client wirtes
@@ -22562,7 +23828,8 @@ test_807() {
 		wait ${pids[$i]}
 	done
 
-	sleep 5
+	do_rpc_nodes "$CLIENTS" cancel_lru_locks osc
+	do_nodes "$CLIENTS" "sync ; sleep 5 ; sync"
 	$LSOM_SYNC -u $cl_user -m $FSNAME-MDT0000 $MOUNT
 	check_lsom_data $DIR/$tdir/trunc
 	check_lsom_data $DIR/$tdir/single_dd
@@ -22662,22 +23929,6 @@ test_810() {
 }
 run_test 810 "partial page writes on ZFS (LU-11663)"
 
-test_811() {
-	[ $MDS1_VERSION -lt $(version_code 2.11.56) ] &&
-		skip "Need MDS version at least 2.11.56"
-
-	#define OBD_FAIL_MDS_ORPHAN_DELETE	0x165
-	do_facet mds1 $LCTL set_param fail_loc=0x165
-	$MULTIOP $DIR/$tfile Ouc || error "multiop failed"
-
-	stop mds1
-	start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS
-
-	wait_update_facet mds1 "pgrep orph_.*-MDD | wc -l" "0" ||
-		error "MDD orphan cleanup thread not quit"
-}
-run_test 811 "orphan name stub can be cleaned up in startup"
-
 test_812a() {
 	[ $OST1_VERSION -lt $(version_code 2.12.51) ] &&
 		skip "OST < 2.12.51 doesn't support this fail_loc"
@@ -23072,6 +24323,18 @@ test_901() {
 }
 run_test 901 "don't leak a mgc lock on client umount"
 
+# LU-13377
+test_902() {
+	[ $CLIENT_VERSION -lt $(version_code 2.13.52) ] &&
+		skip "client does not have LU-13377 fix"
+	#define OBD_FAIL_LLITE_SHORT_COMMIT 0x1415
+	$LCTL set_param fail_loc=0x1415
+	dd if=/dev/zero of=$DIR/$tfile bs=1M count=1
+	cancel_lru_locks osc
+	rm -f $DIR/$tfile
+}
+run_test 902 "test short write doesn't hang lustre"
+
 complete $SECONDS
 [ -f $EXT2_DEV ] && rm $EXT2_DEV || true
 check_and_cleanup_lustre