X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftests%2Fsanity.sh;h=4859d9e20c65264ec351b51ab22986f3b9f8c5be;hp=c73694131b0f77d4b4d2fb8a8b8761ccf8507230;hb=c7ed812d6a87f0ffa3c0d4c1a9289497f680ccec;hpb=048a8740ae26e3406a7eab3bca383a90490cef93

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index c736941..4859d9e 100755
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -8,13 +8,15 @@
 set -e
 
 ONLY=${ONLY:-"$*"}
-# bug number for skipped test: 13297 2108 9789 3637 9789 3561 5188
-ALWAYS_EXCEPT="                42a  42b  42c  42d  45   68b   $SANITY_EXCEPT"
+# bug number for skipped test: LU-9693 LU-6493 LU-9693 3561 5188
+ALWAYS_EXCEPT="                42a    42b      42c     45   68b $SANITY_EXCEPT"
 # UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
 
-# with LOD/OSP landing
-# bug number for skipped tests: LU-2036 LU-8139
-ALWAYS_EXCEPT="                 76	101g	$ALWAYS_EXCEPT"
+# skipped tests: LU-8411 LU-9096 LU-9054 LU-10199
+ALWAYS_EXCEPT="  407     253     312     56xb     $ALWAYS_EXCEPT"
+
+# Check Grants after these tests
+GRANT_CHECK_LIST="$GRANT_CHECK_LIST 42a 42b 42c 42d 42e 63a 63b 64a 64b 64c"
 
 is_sles11()						# LU-4341
 {
@@ -38,6 +40,7 @@ SRCDIR=$(cd $(dirname $0); echo $PWD)
 export PATH=$PATH:/sbin
 
 TMP=${TMP:-/tmp}
+OSC=${OSC:-"osc"}
 
 CC=${CC:-cc}
 CHECKSTAT=${CHECKSTAT:-"checkstat -v"}
@@ -75,12 +78,12 @@ init_test_env $@
 . ${CONFIG:=$LUSTRE/tests/cfg/${NAME}.sh}
 init_logging
 
-#                                  5              12          (min)"
-[ "$SLOW" = "no" ] && EXCEPT_SLOW="24D 27m 64b 68 71 115 300o"
+#                                  5          12          (min)"
+[ "$SLOW" = "no" ] && EXCEPT_SLOW="27m 64b 68 71 115 300o"
 
 if [ $(facet_fstype $SINGLEMDS) = "zfs" ]; then
-	# bug number for skipped test: LU-4536 LU-1957
-	ALWAYS_EXCEPT="$ALWAYS_EXCEPT  65ic    180"
+	# bug number for skipped test: LU-1957
+	ALWAYS_EXCEPT="$ALWAYS_EXCEPT  180"
 	#                                               13    (min)"
 	[ "$SLOW" = "no" ] && EXCEPT_SLOW="$EXCEPT_SLOW 51b"
 fi
@@ -160,44 +163,41 @@ test_0c() {
 	$LCTL get_param mdc.*.import | grep "target: $FSNAME-MDT" ||
 		error "bad target"
 }
-run_test 0c "check import proc ============================="
+run_test 0c "check import proc"
 
 test_1() {
-	test_mkdir -p $DIR/$tdir || error "mkdir $tdir failed"
-	test_mkdir -p $DIR/$tdir/d2 || error "mkdir $tdir/d2 failed"
-	test_mkdir $DIR/$tdir/d2 && error "we expect EEXIST, but not returned"
+	test_mkdir $DIR/$tdir
+	test_mkdir $DIR/$tdir/d2
+	mkdir $DIR/$tdir/d2 && error "we expect EEXIST, but not returned"
 	$CHECKSTAT -t dir $DIR/$tdir/d2 || error "$tdir/d2 is not a dir"
 	rmdir $DIR/$tdir/d2
 	rmdir $DIR/$tdir
 	$CHECKSTAT -a $DIR/$tdir || error "$tdir was not removed"
 }
-run_test 1 "mkdir; remkdir; rmdir =============================="
+run_test 1 "mkdir; remkdir; rmdir"
 
 test_2() {
-	test_mkdir -p $DIR/$tdir || error "mkdir $tdir failed"
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/$tfile || error "touch $tdir/$tfile failed"
 	$CHECKSTAT -t file $DIR/$tdir/$tfile || error "$tdir/$tfile not a file"
 	rm -r $DIR/$tdir
 	$CHECKSTAT -a $DIR/$tdir/$tfile || error "$tdir/$file is not removed"
 }
-run_test 2 "mkdir; touch; rmdir; check file ===================="
+run_test 2 "mkdir; touch; rmdir; check file"
 
 test_3() {
-	test_mkdir -p $DIR/$tdir || error "mkdir $tdir failed"
+	test_mkdir $DIR/$tdir
 	$CHECKSTAT -t dir $DIR/$tdir || error "$tdir is not a directory"
 	touch $DIR/$tdir/$tfile
 	$CHECKSTAT -t file $DIR/$tdir/$tfile || error "$tdir/$tfile not a file"
 	rm -r $DIR/$tdir
 	$CHECKSTAT -a $DIR/$tdir || error "$tdir is not removed"
 }
-run_test 3 "mkdir; touch; rmdir; check dir ====================="
+run_test 3 "mkdir; touch; rmdir; check dir"
 
 # LU-4471 - failed rmdir on remote directories still removes directory on MDT0
 test_4() {
-	local MDTIDX=1
-
-	test_mkdir $DIR/$tdir ||
-		error "Create remote directory failed"
+	test_mkdir -i 1 $DIR/$tdir
 
 	touch $DIR/$tdir/$tfile ||
 		error "Create file under remote directory failed"
@@ -212,13 +212,13 @@ test_4() {
 run_test 4 "mkdir; touch dir/file; rmdir; checkdir (expect error)"
 
 test_5() {
-	test_mkdir -p $DIR/$tdir || error "mkdir $tdir failed"
-	test_mkdir $DIR/$tdir/d2 || error "mkdir $tdir/d2 failed"
+	test_mkdir $DIR/$tdir
+	test_mkdir $DIR/$tdir/d2
 	chmod 0707 $DIR/$tdir/d2 || error "chmod 0707 $tdir/d2 failed"
 	$CHECKSTAT -t dir -p 0707 $DIR/$tdir/d2 || error "$tdir/d2 not mode 707"
 	$CHECKSTAT -t dir $DIR/$tdir/d2 || error "$tdir/d2 is not a directory"
 }
-run_test 5 "mkdir .../d5 .../d5/d2; chmod .../d5/d2 ============"
+run_test 5 "mkdir .../d5 .../d5/d2; chmod .../d5/d2"
 
 test_6a() {
 	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
@@ -253,15 +253,15 @@ test_6e() {
 	$CHECKSTAT -t file -u \#$UID -g \#$RUNAS_ID $DIR/$tfile ||
 		error "$tfile should be owned by UID $UID and GID $RUNAS_ID"
 }
-run_test 6e "touch f6e; chgrp f6e; $RUNAS chgrp f6e (should return error) =="
+run_test 6e "touch+chgrp $tfile; $RUNAS chgrp $tfile (should return error)"
 
 test_6g() {
 	[ $RUNAS_ID -eq $UID ] && skip_env "RUNAS_ID = UID = $UID" && return
-	test_mkdir $DIR/$tdir || error "mkdir $tfile failed"
+	test_mkdir $DIR/$tdir
 	chmod 777 $DIR/$tdir || error "chmod 0777 $tdir failed"
 	$RUNAS mkdir $DIR/$tdir/d || error "mkdir $tdir/d failed"
 	chmod g+s $DIR/$tdir/d || error "chmod g+s $tdir/d failed"
-	test_mkdir $DIR/$tdir/d/subdir || error "mkdir $tdir/d/subdir failed"
+	test_mkdir $DIR/$tdir/d/subdir
 	$CHECKSTAT -g \#$RUNAS_GID $DIR/$tdir/d/subdir ||
 		error "$tdir/d/subdir should be GID $RUNAS_GID"
 	if [[ $MDSCOUNT -gt 1 ]]; then
@@ -280,7 +280,7 @@ test_6g() {
 			error "$tdir.remote should be mode 02755"
 	fi
 }
-run_test 6g "Is new dir in sgid dir inheriting group?"
+run_test 6g "verify new dir in sgid dir inherits group"
 
 test_6h() { # bug 7331
 	[ $RUNAS_ID -eq $UID ] && skip_env "RUNAS_ID = UID = $UID" && return
@@ -291,7 +291,7 @@ test_6h() { # bug 7331
 	$CHECKSTAT -t file -u \#$RUNAS_ID -g \#$RUNAS_GID $DIR/$tfile ||
 		error "$tdir/$tfile should be UID $RUNAS_UID GID $RUNAS_GID"
 }
-run_test 6h "$RUNAS chown RUNAS_ID.0 .../f6h (should return error)"
+run_test 6h "$RUNAS chown RUNAS_ID.0 .../$tfile (should return error)"
 
 test_7a() {
 	test_mkdir $DIR/$tdir
@@ -392,10 +392,10 @@ test_16() {
 	rm -rf $DIR/$tdir/$tfile
 	$CHECKSTAT -a $DIR/$tdir/$tfile || error "$tdir/$tfile not removed"
 }
-run_test 16 "touch .../d16/f; rm -rf .../d16/f ================="
+run_test 16 "touch .../d16/f; rm -rf .../d16/f"
 
 test_17a() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/$tfile
 	ln -s $DIR/$tdir/$tfile $DIR/$tdir/l-exist
 	ls -l $DIR/$tdir
@@ -406,10 +406,10 @@ test_17a() {
 	rm -f $DIR/$tdir/l-exist
 	$CHECKSTAT -a $DIR/$tdir/l-exist || error "$tdir/l-exist not removed"
 }
-run_test 17a "symlinks: create, remove (real) =================="
+run_test 17a "symlinks: create, remove (real)"
 
 test_17b() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	ln -s no-such-file $DIR/$tdir/l-dangle
 	ls -l $DIR/$tdir
 	$CHECKSTAT -l no-such-file $DIR/$tdir/l-dangle ||
@@ -419,33 +419,33 @@ test_17b() {
 	rm -f $DIR/$tdir/l-dangle
 	$CHECKSTAT -a $DIR/$tdir/l-dangle || error "$tdir/l-dangle not removed"
 }
-run_test 17b "symlinks: create, remove (dangling) =============="
+run_test 17b "symlinks: create, remove (dangling)"
 
 test_17c() { # bug 3440 - don't save failed open RPC for replay
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	ln -s foo $DIR/$tdir/$tfile
 	cat $DIR/$tdir/$tfile && error "opened non-existent symlink" || true
 }
-run_test 17c "symlinks: open dangling (should return error) ===="
+run_test 17c "symlinks: open dangling (should return error)"
 
 test_17d() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	ln -s foo $DIR/$tdir/$tfile
 	touch $DIR/$tdir/$tfile || error "creating to new symlink"
 }
-run_test 17d "symlinks: create dangling ========================"
+run_test 17d "symlinks: create dangling"
 
 test_17e() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local foo=$DIR/$tdir/$tfile
 	ln -s $foo $foo || error "create symlink failed"
 	ls -l $foo || error "ls -l failed"
 	ls $foo && error "ls not failed" || true
 }
-run_test 17e "symlinks: create recursive symlink (should return error) ===="
+run_test 17e "symlinks: create recursive symlink (should return error)"
 
 test_17f() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	ln -s 1234567890/2234567890/3234567890/4234567890 $DIR/$tdir/111
 	ln -s 1234567890/2234567890/3234567890/4234567890/5234567890/6234567890 $DIR/$tdir/222
 	ln -s 1234567890/2234567890/3234567890/4234567890/5234567890/6234567890/7234567890/8234567890 $DIR/$tdir/333
@@ -454,7 +454,7 @@ test_17f() {
 	ln -s 1234567890/2234567890/3234567890/4234567890/5234567890/6234567890/7234567890/8234567890/9234567890/a234567890/b234567890/c234567890/d234567890/f234567890/aaaaaaaaaa/bbbbbbbbbb/cccccccccc/dddddddddd/eeeeeeeeee/ffffffffff/ $DIR/$tdir/666
 	ls -l  $DIR/$tdir
 }
-run_test 17f "symlinks: long and very long symlink name ========================"
+run_test 17f "symlinks: long and very long symlink name"
 
 # str_repeat(S, N) generate a string that is string S repeated N times
 str_repeat() {
@@ -469,7 +469,7 @@ str_repeat() {
 
 # Long symlinks and LU-2241
 test_17g() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local TESTS="59 60 61 4094 4095"
 
 	# Fix for inode size boundary in 2.1.4
@@ -498,16 +498,16 @@ test_17h() { #bug 17378
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	local mdt_idx
-        test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	if [[ $MDSCOUNT -gt 1 ]]; then
 		mdt_idx=$($LFS getdirstripe -i $DIR/$tdir)
 	else
 		mdt_idx=0
 	fi
-        $SETSTRIPE -c -1 $DIR/$tdir
-#define OBD_FAIL_MDS_LOV_PREP_CREATE 0x141
-        do_facet mds$((mdt_idx + 1)) lctl set_param fail_loc=0x80000141
-        touch $DIR/$tdir/$tfile || true
+	$LFS setstripe -c -1 $DIR/$tdir
+	#define OBD_FAIL_MDS_LOV_PREP_CREATE 0x141
+	do_facet mds$((mdt_idx + 1)) lctl set_param fail_loc=0x80000141
+	touch $DIR/$tdir/$tfile || true
 }
 run_test 17h "create objects: lov_free_memmd() doesn't lbug"
 
@@ -536,19 +536,19 @@ test_17k() { #bug 22301
 	rsync --help | grep -q xattr ||
 		skip_env "$(rsync --version | head -n1) does not support xattrs"
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return 0
-	test_mkdir -p $DIR/$tdir
-	test_mkdir -p $DIR/$tdir.new
+	test_mkdir $DIR/$tdir
+	test_mkdir $DIR/$tdir.new
 	touch $DIR/$tdir/$tfile
 	ln -s $DIR/$tdir/$tfile $DIR/$tdir/$tfile.lnk
 	rsync -av -X $DIR/$tdir/ $DIR/$tdir.new ||
 		error "rsync failed with xattrs enabled"
 }
-run_test 17k "symlinks: rsync with xattrs enabled ========================="
+run_test 17k "symlinks: rsync with xattrs enabled"
 
 test_17l() { # LU-279
 	[[ -z "$(which getfattr 2>/dev/null)" ]] &&
 		skip "no getfattr command" && return 0
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/$tfile
 	ln -s $DIR/$tdir/$tfile $DIR/$tdir/$tfile.lnk
 	for path in "$DIR/$tdir" "$DIR/$tdir/$tfile" "$DIR/$tdir/$tfile.lnk"; do
@@ -561,12 +561,12 @@ test_17l() { # LU-279
 		done
 	done
 }
-run_test 17l "Ensure lgetxattr's returned xattr size is consistent ========"
+run_test 17l "Ensure lgetxattr's returned xattr size is consistent"
 
 # LU-1540
 test_17m() {
 	local short_sym="0123456789"
-	local WDIR=$DIR/${tdir}m
+	local wdir=$DIR/$tdir
 	local i
 
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
@@ -575,36 +575,36 @@ test_17m() {
 		skip "MDS 2.2.0-2.2.93 do not NUL-terminate symlinks" && return
 
 	[ "$(facet_fstype $SINGLEMDS)" != "ldiskfs" ] &&
-		skip "only for ldiskfs MDT" && return 0
+		skip "ldiskfs only test" && return 0
 
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 
-	test_mkdir -p $WDIR
+	test_mkdir $wdir
 	long_sym=$short_sym
 	# create a long symlink file
 	for ((i = 0; i < 4; ++i)); do
 		long_sym=${long_sym}${long_sym}
 	done
 
-	echo "create 512 short and long symlink files under $WDIR"
+	echo "create 512 short and long symlink files under $wdir"
 	for ((i = 0; i < 256; ++i)); do
-		ln -sf ${long_sym}"a5a5" $WDIR/long-$i
-		ln -sf ${short_sym}"a5a5" $WDIR/short-$i
+		ln -sf ${long_sym}"a5a5" $wdir/long-$i
+		ln -sf ${short_sym}"a5a5" $wdir/short-$i
 	done
 
 	echo "erase them"
-	rm -f $WDIR/*
+	rm -f $wdir/*
 	sync
 	wait_delete_completed
 
 	echo "recreate the 512 symlink files with a shorter string"
 	for ((i = 0; i < 512; ++i)); do
 		# rewrite the symlink file with a shorter string
-		ln -sf ${long_sym} $WDIR/long-$i || error "long_sym failed"
-		ln -sf ${short_sym} $WDIR/short-$i || error "short_sym failed"
+		ln -sf ${long_sym} $wdir/long-$i || error "long_sym failed"
+		ln -sf ${short_sym} $wdir/short-$i || error "short_sym failed"
 	done
 
-	local mds_index=$(($($LFS getstripe -M $WDIR) + 1))
+	local mds_index=$(($($LFS getstripe -M $wdir) + 1))
 	local devname=$(mdsdevname $mds_index)
 
 	echo "stop and checking mds${mds_index}:"
@@ -613,7 +613,8 @@ test_17m() {
 	run_e2fsck $(facet_active_host mds${mds_index}) $devname -n
 	rc=$?
 
-	start mds${mds_index} $devname $MDS_MOUNT_OPTS || error "start failed"
+	start mds${mds_index} $devname $MDS_MOUNT_OPTS ||
+		error "start mds${mds_index} failed"
 	df $MOUNT > /dev/null 2>&1
 	[ $rc -eq 0 ] ||
 		error "e2fsck detected error for short/long symlink: rc=$rc"
@@ -649,7 +650,7 @@ test_17n() {
 		skip "MDS 2.2.0-2.2.93 do not NUL-terminate symlinks" && return
 
 	[ "$(facet_fstype $SINGLEMDS)" != "ldiskfs" ] &&
-		skip "only for ldiskfs MDT" && return 0
+		skip "ldiskfs only test" && return 0
 
 	[[ $MDSCOUNT -lt 2 ]] && skip "needs >= 2 MDTs" && return
 
@@ -700,26 +701,25 @@ test_17o() {
 	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.3.64) ] &&
 		skip "Need MDS version at least 2.3.64" && return
 
-	local WDIR=$DIR/${tdir}o
+	local wdir=$DIR/${tdir}o
 	local mdt_index
 	local rc=0
 
-	test_mkdir -p $WDIR
-	mdt_index=$($LFS getstripe -M $WDIR)
-	mdt_index=$((mdt_index+1))
-
-	touch $WDIR/$tfile
+	test_mkdir $wdir
+	touch $wdir/$tfile
+	mdt_index=$($LFS getstripe -M $wdir/$tfile)
+	mdt_index=$((mdt_index + 1))
 
+	cancel_lru_locks mdc
 	#fail mds will wait the failover finish then set
 	#following fail_loc to avoid interfer the recovery process.
 	fail mds${mdt_index}
 
 	#define OBD_FAIL_OSD_LMA_INCOMPAT 0x194
 	do_facet mds${mdt_index} lctl set_param fail_loc=0x194
-	ls -l $WDIR/$tfile && rc=1
+	ls -l $wdir/$tfile && rc=1
 	do_facet mds${mdt_index} lctl set_param fail_loc=0
-	[[ $rc -ne 0 ]] && error "stat file should fail"
-	true
+	[[ $rc -eq 0 ]] || error "stat file should fail"
 }
 run_test 17o "stat file with incompat LMA feature"
 
@@ -757,19 +757,16 @@ run_test 19d "cat .../f19 (should return error) =============="
 test_20() {
 	touch $DIR/$tfile
 	rm $DIR/$tfile
-	log "1 done"
 	touch $DIR/$tfile
 	rm $DIR/$tfile
-	log "2 done"
 	touch $DIR/$tfile
 	rm $DIR/$tfile
-	log "3 done"
 	$CHECKSTAT -a $DIR/$tfile || error "$tfile was not removed"
 }
-run_test 20 "touch .../f ; ls -l ... ==========================="
+run_test 20 "touch .../f ; ls -l ..."
 
 test_21() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	[ -f $DIR/$tdir/dangle ] && rm -f $DIR/$tdir/dangle
 	ln -s dangle $DIR/$tdir/link
 	echo foo >> $DIR/$tdir/link
@@ -778,43 +775,44 @@ test_21() {
 	$CHECKSTAT -f -t file $DIR/$tdir/link ||
 		error "$tdir/link not linked to a file"
 }
-run_test 21 "write to dangling link ============================"
+run_test 21 "write to dangling link"
 
 test_22() {
-	WDIR=$DIR/$tdir
-	test_mkdir -p $DIR/$tdir
-	chown $RUNAS_ID:$RUNAS_GID $WDIR
-	(cd $WDIR || error "cd $WDIR failed";
-	$RUNAS tar cf - /etc/hosts /etc/sysconfig/network | \
-	$RUNAS tar xf -)
-	ls -lR $WDIR/etc || error "ls -lR $WDIR/etc failed"
-	$CHECKSTAT -t dir $WDIR/etc || error "checkstat -t dir failed"
-	$CHECKSTAT -u \#$RUNAS_ID -g \#$RUNAS_GID $WDIR/etc || error "checkstat -u failed"
-}
-run_test 22 "unpack tar archive as non-root user ==============="
+	local wdir=$DIR/$tdir
+	test_mkdir $wdir
+	chown $RUNAS_ID:$RUNAS_GID $wdir
+	(cd $wdir || error "cd $wdir failed";
+		$RUNAS tar cf - /etc/hosts /etc/sysconfig/network |
+		$RUNAS tar xf -)
+	ls -lR $wdir/etc || error "ls -lR $wdir/etc failed"
+	$CHECKSTAT -t dir $wdir/etc || error "checkstat -t dir failed"
+	$CHECKSTAT -u \#$RUNAS_ID -g \#$RUNAS_GID $wdir/etc ||
+		error "checkstat -u failed"
+}
+run_test 22 "unpack tar archive as non-root user"
 
 # was test_23
 test_23a() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local file=$DIR/$tdir/$tfile
 
 	openfile -f O_CREAT:O_EXCL $file || error "$file create failed"
 	openfile -f O_CREAT:O_EXCL $file &&
 		error "$file recreate succeeded" || true
 }
-run_test 23a "O_CREAT|O_EXCL in subdir =========================="
+run_test 23a "O_CREAT|O_EXCL in subdir"
 
 test_23b() { # bug 18988
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local file=$DIR/$tdir/$tfile
 
-        rm -f $file
-        echo foo > $file || error "write filed"
-        echo bar >> $file || error "append filed"
-        $CHECKSTAT -s 8 $file || error "wrong size"
-        rm $file
+	rm -f $file
+	echo foo > $file || error "write filed"
+	echo bar >> $file || error "append filed"
+	$CHECKSTAT -s 8 $file || error "wrong size"
+	rm $file
 }
-run_test 23b "O_APPEND check =========================="
+run_test 23b "O_APPEND check"
 
 # rename sanity
 test_24a() {
@@ -956,10 +954,10 @@ test_24n() {
 run_test 24n "Statting the old file after renaming (Posix rename 2)"
 
 test_24o() {
-	test_mkdir -p $DIR/d24o
-	rename_many -s random -v -n 10 $DIR/d24o
+	test_mkdir $DIR/$tdir
+	rename_many -s random -v -n 10 $DIR/$tdir
 }
-run_test 24o "rename of files during htree split ==============="
+run_test 24o "rename of files during htree split"
 
 test_24p() {
 	test_mkdir $DIR/R12a
@@ -1038,53 +1036,73 @@ page_size() {
 }
 
 simple_cleanup_common() {
+	local rc=0
 	trap 0
+	[ -z "$DIR" -o -z "$tdir" ] && return 0
+
+	local start=$SECONDS
 	rm -rf $DIR/$tdir
+	rc=$?
 	wait_delete_completed
+	echo "cleanup time $((SECONDS - start))"
+	return $rc
 }
 
 max_pages_per_rpc() {
-	$LCTL get_param -n mdc.*.max_pages_per_rpc | head -n1
+	local mdtname="$(printf "MDT%04x" ${1:-0})"
+	$LCTL get_param -n mdc.*$mdtname*.max_pages_per_rpc
 }
 
 test_24v() {
-	local NRFILES=100000
-	local FREE_INODES=$(mdt_free_inodes 0)
-	[[ $FREE_INODES -lt $NRFILES ]] &&
-		skip "not enough free inodes $FREE_INODES required $NRFILES" &&
-		return
-
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	trap simple_cleanup_common EXIT
-
+	local nrfiles=${COUNT:-100000}
 	# Performance issue on ZFS see LU-4072 (c.f. LU-2887)
-	[ $(facet_fstype $SINGLEMDS) = "zfs" ] && NRFILES=10000
+	[ $(facet_fstype $SINGLEMDS) = "zfs" ] && nrfiles=${COUNT:-10000}
 
-	test_mkdir -p $DIR/$tdir
-	createmany -m $DIR/$tdir/$tfile $NRFILES
+	local fname="$DIR/$tdir/$tfile"
+	test_mkdir "$(dirname $fname)"
+	# assume MDT0000 has the fewest inodes
+	local stripes=$($LFS getdirstripe -c $(dirname $fname))
+	local free_inodes=$(($(mdt_free_inodes 0) * stripes))
+	[[ $free_inodes -lt $nrfiles ]] && nrfiles=$free_inodes
+
+	trap simple_cleanup_common EXIT
+
+	createmany -m "$fname" $nrfiles
 
 	cancel_lru_locks mdc
 	lctl set_param mdc.*.stats clear
 
-	ls $DIR/$tdir >/dev/null || error "error in listing large dir"
-
+	# was previously test_24D: LU-6101
+	# readdir() returns correct number of entries after cursor reload
+	local num_ls=$(ls $DIR/$tdir | wc -l)
+	local num_uniq=$(ls $DIR/$tdir | sort -u | wc -l)
+	local num_all=$(ls -a $DIR/$tdir | wc -l)
+	if [ $num_ls -ne $nrfiles -o $num_uniq -ne $nrfiles -o \
+	     $num_all -ne $((nrfiles + 2)) ]; then
+		error "Expected $nrfiles files, got $num_ls " \
+			"($num_uniq unique $num_all .&..)"
+	fi
 	# LU-5 large readdir
-	# DIRENT_SIZE = 32 bytes for sizeof(struct lu_dirent) +
-	#               8 bytes for name(filename is mostly 5 in this test) +
-	#               8 bytes for luda_type
+	# dirent_size = 32 bytes for sizeof(struct lu_dirent) +
+	#               N bytes for name (len($nrfiles) rounded to 8 bytes) +
+	#               8 bytes for luda_type (4 bytes rounded to 8 bytes)
 	# take into account of overhead in lu_dirpage header and end mark in
-	# each page, plus one in RPC_NUM calculation.
-	DIRENT_SIZE=48
-	RPC_SIZE=$(($(max_pages_per_rpc) * $(page_size)))
-	RPC_NUM=$(((NRFILES * DIRENT_SIZE + RPC_SIZE - 1) / RPC_SIZE + 1))
-	mds_readpage=$(lctl get_param mdc.*MDT0000*.stats |
-				awk '/^mds_readpage/ {print $2}')
-	[[ $mds_readpage -gt $RPC_NUM ]] &&
-		error "large readdir doesn't take effect"
+	# each page, plus one in rpc_num calculation.
+	local dirent_size=$((32 + (${#tfile} | 7) + 1 + 8))
+	local page_entries=$((($(page_size) - 24) / dirent_size))
+	local mdt_idx=$($LFS getdirstripe -i $(dirname $fname))
+	local rpc_pages=$(max_pages_per_rpc $mdt_idx)
+	local rpc_max=$((nrfiles / (page_entries * rpc_pages) + stripes))
+	local mds_readpage=$(calc_stats mdc.*.stats mds_readpage)
+	echo "readpages: $mds_readpage rpc_max: $rpc_max"
+	(( $mds_readpage < $rpc_max - 2 || $mds_readpage > $rpc_max + 1)) &&
+		error "large readdir doesn't take effect: " \
+		      "$mds_readpage should be about $rpc_max"
 
 	simple_cleanup_common
 }
-run_test 24v "list directory with large files (handle hash collision, bug: 17560)"
+run_test 24v "list large directory (test hash collision, b=17560)"
 
 test_24w() { # bug21506
         SZ1=234852
@@ -1107,13 +1125,13 @@ test_24x() {
 	local MDTIDX=1
 	local remote_dir=$DIR/$tdir/remote_dir
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$LFS mkdir -i $MDTIDX $remote_dir ||
 		error "create remote directory failed"
 
-	test_mkdir -p $DIR/$tdir/src_dir
+	test_mkdir $DIR/$tdir/src_dir
 	touch $DIR/$tdir/src_file
-	test_mkdir -p $remote_dir/tgt_dir
+	test_mkdir $remote_dir/tgt_dir
 	touch $remote_dir/tgt_file
 
 	mrename $DIR/$tdir/src_dir $remote_dir/tgt_dir ||
@@ -1133,16 +1151,16 @@ run_test 24x "cross MDT rename/link"
 test_24y() {
 	[[ $MDSCOUNT -lt 2 ]] && skip "needs >= 2 MDTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	local MDTIDX=1
 	local remote_dir=$DIR/$tdir/remote_dir
+	local mdtidx=1
 
-	test_mkdir -p $DIR/$tdir
-	$LFS mkdir -i $MDTIDX $remote_dir ||
+	test_mkdir $DIR/$tdir
+	$LFS mkdir -i $mdtidx $remote_dir ||
 	           error "create remote directory failed"
 
-	test_mkdir -p $remote_dir/src_dir
+	test_mkdir $remote_dir/src_dir
 	touch $remote_dir/src_file
-	test_mkdir -p $remote_dir/tgt_dir
+	test_mkdir $remote_dir/tgt_dir
 	touch $remote_dir/tgt_file
 
 	mrename $remote_dir/src_dir $remote_dir/tgt_dir ||
@@ -1162,7 +1180,8 @@ test_24A() { # LU-3182
 	local NFILES=5000
 
 	rm -rf $DIR/$tdir
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	trap simple_cleanup_common EXIT
 	createmany -m $DIR/$tdir/$tfile $NFILES
 	local t=$(ls $DIR/$tdir | wc -l)
 	local u=$(ls $DIR/$tdir | sort -u | wc -l)
@@ -1171,7 +1190,7 @@ test_24A() { # LU-3182
 		error "Expected $NFILES files, got $t ($u unique $v .&..)"
 	fi
 
-	rm -rf $DIR/$tdir || error "Can not delete directories"
+	simple_cleanup_common || error "Can not delete directories"
 }
 run_test 24A "readdir() returns correct number of entries."
 
@@ -1229,23 +1248,6 @@ test_24C() {
 }
 run_test 24C "check .. in striped dir"
 
-test_24D() { # LU-6101
-	local NFILES=50000
-
-	rm -rf $DIR/$tdir
-	mkdir -p $DIR/$tdir
-	createmany -m $DIR/$tdir/$tfile $NFILES
-	local t=$(ls $DIR/$tdir | wc -l)
-	local u=$(ls $DIR/$tdir | sort -u | wc -l)
-	local v=$(ls -ai $DIR/$tdir | sort -u | wc -l)
-	if [ $t -ne $NFILES -o $u -ne $NFILES -o $v -ne $((NFILES + 2)) ] ; then
-		error "Expected $NFILES files, got $t ($u unique $v .&..)"
-	fi
-
-	rm -rf $DIR/$tdir || error "Can not delete directories"
-}
-run_test 24D "readdir() returns correct number of entries after cursor reload"
-
 test_24E() {
 	[[ $MDSCOUNT -lt 4 ]] && skip "needs >= 4 MDTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
@@ -1302,8 +1304,8 @@ test_26a() {
 run_test 26a "multiple component symlink ======================="
 
 test_26b() {
-	test_mkdir -p $DIR/d26b/d26-2
-	ln -s d26b/d26-2/foo $DIR/s26-2
+	test_mkdir -p $DIR/$tdir/d26-2
+	ln -s $tdir/d26-2/foo $DIR/s26-2
 	touch $DIR/s26-2 || error
 }
 run_test 26b "multiple component symlink at end of lookup ======"
@@ -1316,27 +1318,27 @@ test_26c() {
 	ln -s s26.2-2 $DIR/s26.2-3
 	chmod 0666 $DIR/s26.2-3/foo
 }
-run_test 26c "chain of symlinks ================================"
+run_test 26c "chain of symlinks"
 
 # recursive symlinks (bug 439)
 test_26d() {
 	ln -s d26-3/foo $DIR/d26-3
 }
-run_test 26d "create multiple component recursive symlink ======"
+run_test 26d "create multiple component recursive symlink"
 
 test_26e() {
 	[ ! -h $DIR/d26-3 ] && test_26d
 	rm $DIR/d26-3
 }
-run_test 26e "unlink multiple component recursive symlink ======"
+run_test 26e "unlink multiple component recursive symlink"
 
 # recursive symlinks (bug 7022)
 test_26f() {
-	test_mkdir -p $DIR/$tdir
-	test_mkdir $DIR/$tdir/$tfile   || error "mkdir $DIR/$tdir/$tfile failed"
+	test_mkdir $DIR/$tdir
+	test_mkdir $DIR/$tdir/$tfile
 	cd $DIR/$tdir/$tfile           || error "cd $DIR/$tdir/$tfile failed"
-	test_mkdir -p lndir/bar1      || error "mkdir lndir/bar1 failed"
-	test_mkdir $DIR/$tdir/$tfile/$tfile   || error "mkdir $tfile failed"
+	test_mkdir -p lndir/bar1
+	test_mkdir $DIR/$tdir/$tfile/$tfile
 	cd $tfile                || error "cd $tfile failed"
 	ln -s .. dotdot          || error "ln dotdot failed"
 	ln -s dotdot/lndir lndir || error "ln lndir failed"
@@ -1346,108 +1348,105 @@ test_26f() {
 	rm -r $tfile             || error "rm $tfile failed"
 	$CHECKSTAT -a $DIR/$tfile || error "$tfile not gone"
 }
-run_test 26f "rm -r of a directory which has recursive symlink ="
+run_test 26f "rm -r of a directory which has recursive symlink"
 
 test_27a() {
-	echo '== stripe sanity =============================================='
-	test_mkdir -p $DIR/d27 || error "mkdir failed"
-	$GETSTRIPE $DIR/d27
-	$SETSTRIPE -c 1 $DIR/d27/f0 || error "setstripe failed"
-	$CHECKSTAT -t file $DIR/d27/f0 || error "checkstat failed"
-	log "== test_27a: write to one stripe file ========================="
-	cp /etc/hosts $DIR/d27/f0 || error
+	test_mkdir $DIR/$tdir
+	$LFS getstripe $DIR/$tdir
+	$LFS setstripe -c 1 $DIR/$tdir/$tfile || error "setstripe failed"
+	$CHECKSTAT -t file $DIR/$tdir/$tfile || error "checkstat failed"
+	cp /etc/hosts $DIR/$tdir/$tfile || error
 }
-run_test 27a "one stripe file =================================="
+run_test 27a "one stripe file"
 
 test_27b() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping 2-stripe test" && return
-	test_mkdir -p $DIR/d27
-	$SETSTRIPE -c 2 $DIR/d27/f01 || error "setstripe failed"
-	$GETSTRIPE -c $DIR/d27/f01
-	[ $($GETSTRIPE -c $DIR/d27/f01) -eq 2 ] ||
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 2 $DIR/$tdir/$tfile || error "setstripe failed"
+	$LFS getstripe -c $DIR/$tdir/$tfile
+	[ $($LFS getstripe -c $DIR/$tdir/$tfile) -eq 2 ] ||
 		error "two-stripe file doesn't have two stripes"
 
-	dd if=/dev/zero of=$DIR/d27/f01 bs=4k count=4 || error "dd failed"
+	dd if=/dev/zero of=$DIR/$tdir/$tfile bs=4k count=4 || error "dd failed"
 }
 run_test 27b "create and write to two stripe file"
 
 test_27d() {
-	test_mkdir -p $DIR/d27
-	$SETSTRIPE -c 0 -i -1 -S 0 $DIR/d27/fdef || error "setstripe failed"
-	$CHECKSTAT -t file $DIR/d27/fdef || error "checkstat failed"
-	dd if=/dev/zero of=$DIR/d27/fdef bs=4k count=4 || error
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 0 -i -1 -S 0 $DIR/$tdir/$tfile ||
+		error "setstripe failed"
+	$CHECKSTAT -t file $DIR/$tdir/$tfile || error "checkstat failed"
+	dd if=/dev/zero of=$DIR/$tdir/$tfile bs=4k count=4 || error "dd failed"
 }
-run_test 27d "create file with default settings ================"
+run_test 27d "create file with default settings"
 
 test_27e() {
 	# LU-5839 adds check for existed layout before setting it
 	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.56) ]] &&
 		skip "Need MDS version at least 2.7.56" && return
-	test_mkdir -p $DIR/d27
-	$SETSTRIPE -c 2 $DIR/d27/f12 || error "setstripe failed"
-	$SETSTRIPE -c 2 $DIR/d27/f12 && error "setstripe succeeded twice"
-	$CHECKSTAT -t file $DIR/d27/f12 || error "checkstat failed"
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 2 $DIR/$tdir/$tfile || error "setstripe failed"
+	$LFS setstripe -c 2 $DIR/$tdir/$tfile && error "setstripe worked twice"
+	$CHECKSTAT -t file $DIR/$tdir/$tfile || error "checkstat failed"
 }
-run_test 27e "setstripe existing file (should return error) ======"
+run_test 27e "setstripe existing file (should return error)"
 
 test_27f() {
 	test_mkdir $DIR/$tdir
-	$SETSTRIPE -S 100 -i 0 -c 1 $DIR/$tdir/$tfile &&
+	$LFS setstripe -S 100 -i 0 -c 1 $DIR/$tdir/$tfile &&
 		error "$SETSTRIPE $DIR/$tdir/$tfile failed"
 	$CHECKSTAT -t file $DIR/$tdir/$tfile &&
 		error "$CHECKSTAT -t file $DIR/$tdir/$tfile should fail"
 	dd if=/dev/zero of=$DIR/$tdir/$tfile bs=4k count=4 || error "dd failed"
-	$GETSTRIPE $DIR/$tdir/$tfile || error "$GETSTRIPE failed"
+	$LFS getstripe $DIR/$tdir/$tfile || error "$LFS getstripe failed"
 }
 run_test 27f "setstripe with bad stripe size (should return error)"
 
 test_27g() {
-	test_mkdir -p $DIR/d27
-	$MCREATE $DIR/d27/fnone || error "mcreate failed"
-	$GETSTRIPE $DIR/d27/fnone 2>&1 | grep "no stripe info" ||
-		error "$DIR/d27/fnone has object"
+	test_mkdir $DIR/$tdir
+	$MCREATE $DIR/$tdir/$tfile || error "mcreate failed"
+	$LFS getstripe $DIR/$tdir/$tfile 2>&1 | grep "no stripe info" ||
+		error "$DIR/$tdir/$tfile has object"
 }
-run_test 27g "$GETSTRIPE with no objects"
+run_test 27g "$LFS getstripe with no objects"
 
 test_27i() {
 	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/$tfile || error "touch failed"
-	[[ $($GETSTRIPE -c $DIR/$tdir/$tfile) -gt 0 ]] ||
+	[[ $($LFS getstripe -c $DIR/$tdir/$tfile) -gt 0 ]] ||
 		error "missing objects"
 }
-run_test 27i "$GETSTRIPE with some objects"
+run_test 27i "$LFS getstripe with some objects"
 
 test_27j() {
-	test_mkdir -p $DIR/d27
-	$SETSTRIPE -i $OSTCOUNT $DIR/d27/f27j && error "setstripe failed"||true
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -i $OSTCOUNT $DIR/$tdir/$tfile &&
+		error "setstripe failed" || true
 }
 run_test 27j "setstripe with bad stripe offset (should return error)"
 
 test_27k() { # bug 2844
-	test_mkdir -p $DIR/d27
-	FILE=$DIR/d27/f27k
-	LL_MAX_BLKSIZE=$((4 * 1024 * 1024))
-	[ ! -d $DIR/d27 ] && test_mkdir -p $DIR d27
-	$SETSTRIPE -S 67108864 $FILE || error "setstripe failed"
-	BLKSIZE=`stat $FILE | awk '/IO Block:/ { print $7 }'`
-	[ $BLKSIZE -le $LL_MAX_BLKSIZE ] || error "1:$BLKSIZE > $LL_MAX_BLKSIZE"
-	dd if=/dev/zero of=$FILE bs=4k count=1
-	BLKSIZE=`stat $FILE | awk '/IO Block:/ { print $7 }'`
-	[ $BLKSIZE -le $LL_MAX_BLKSIZE ] || error "2:$BLKSIZE > $LL_MAX_BLKSIZE"
-}
-run_test 27k "limit i_blksize for broken user apps ============="
+	test_mkdir $DIR/$tdir
+	local file=$DIR/$tdir/$tfile
+	local ll_max_blksize=$((4 * 1024 * 1024))
+	$LFS setstripe -S 67108864 $file || error "setstripe failed"
+	local blksize=$(stat $file | awk '/IO Block:/ { print $7 }')
+	[ $blksize -le $ll_max_blksize ] || error "1:$blksize > $ll_max_blksize"
+	dd if=/dev/zero of=$file bs=4k count=1
+	blksize=$(stat $file | awk '/IO Block:/ { print $7 }')
+	[ $blksize -le $ll_max_blksize ] || error "2:$blksize > $ll_max_blksize"
+}
+run_test 27k "limit i_blksize for broken user apps"
 
 test_27l() {
-	test_mkdir -p $DIR/d27
-	mcreate $DIR/f27l || error "creating file"
-	$RUNAS $SETSTRIPE -c 1 $DIR/f27l && \
+	mcreate $DIR/$tfile || error "creating file"
+	$RUNAS $LFS setstripe -c 1 $DIR/$tfile &&
 		error "setstripe should have failed" || true
 }
 run_test 27l "check setstripe permissions (should return error)"
 
 test_27m() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "$OSTCOUNT < 2 OSTs -- skipping" &&
-		return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
 	ORIGFREE=$($LCTL get_param -n lov.$FSNAME-clilov-*.kbytesavail |
 		   head -n1)
@@ -1456,30 +1455,33 @@ test_27m() {
 		return
 	fi
 	trap simple_cleanup_common EXIT
-	test_mkdir -p $DIR/$tdir
-	$SETSTRIPE -i 0 -c 1 $DIR/$tdir/f27m_1
-	dd if=/dev/zero of=$DIR/$tdir/f27m_1 bs=1024 count=$MAXFREE &&
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -i 0 -c 1 $DIR/$tdir/$tfile.1
+	dd if=/dev/zero of=$DIR/$tdir/$tfile.1 bs=1024 count=$MAXFREE &&
 		error "dd should fill OST0"
 	i=2
-	while $SETSTRIPE -i 0 -c 1 $DIR/$tdir/f27m_$i; do
+	while $LFS setstripe -i 0 -c 1 $DIR/$tdir/$tfile.$i; do
 		i=$((i + 1))
 		[ $i -gt 256 ] && break
 	done
 	i=$((i + 1))
-	touch $DIR/$tdir/f27m_$i
-	[ `$GETSTRIPE $DIR/$tdir/f27m_$i | grep -A 10 obdidx | awk '{print $1}'| grep -w "0"` ] &&
+	touch $DIR/$tdir/$tfile.$i
+	[ $($LFS getstripe $DIR/$tdir/$tfile.$i | grep -A 10 obdidx |
+	    awk '{print $1}'| grep -w "0") ] &&
 		error "OST0 was full but new created file still use it"
 	i=$((i + 1))
-	touch $DIR/$tdir/f27m_$i
-	[ `$GETSTRIPE $DIR/$tdir/f27m_$i | grep -A 10 obdidx | awk '{print $1}'| grep -w "0"` ] &&
+	touch $DIR/$tdir/$tfile.$i
+	[ $($LFS getstripe $DIR/$tdir/$tfile.$i | grep -A 10 obdidx |
+	    awk '{print $1}'| grep -w "0") ] &&
 		error "OST0 was full but new created file still use it"
 	simple_cleanup_common
 }
-run_test 27m "create file while OST0 was full =================="
+run_test 27m "create file while OST0 was full"
 
 sleep_maxage() {
-        local DELAY=$(do_facet $SINGLEMDS lctl get_param -n lov.*.qos_maxage | head -n 1 | awk '{print $1 * 2}')
-        sleep $DELAY
+	local delay=$(do_facet $SINGLEMDS lctl get_param -n lov.*.qos_maxage |
+		      head -n 1 | awk '{ print $1 * 2 }')
+	sleep $delay
 }
 
 # OSCs keep a NOSPC flag that will be reset after ~5s (qos_maxage)
@@ -1537,7 +1539,7 @@ exhaust_all_precreations() {
 }
 
 test_27n() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
@@ -1545,15 +1547,15 @@ test_27n() {
 	reset_enospc
 	rm -f $DIR/$tdir/$tfile
 	exhaust_precreations 0 0x80000215
-	$SETSTRIPE -c -1 $DIR/$tdir
+	$LFS setstripe -c -1 $DIR/$tdir
 	touch $DIR/$tdir/$tfile || error
-	$GETSTRIPE $DIR/$tdir/$tfile
+	$LFS getstripe $DIR/$tdir/$tfile
 	reset_enospc
 }
-run_test 27n "create file with some full OSTs =================="
+run_test 27n "create file with some full OSTs"
 
 test_27o() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
@@ -1567,17 +1569,17 @@ test_27o() {
 	reset_enospc
 	rm -rf $DIR/$tdir/*
 }
-run_test 27o "create file with all full OSTs (should error) ===="
+run_test 27o "create file with all full OSTs (should error)"
 
 test_27p() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 
 	reset_enospc
 	rm -f $DIR/$tdir/$tfile
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 
 	$MCREATE $DIR/$tdir/$tfile || error "mcreate failed"
 	$TRUNCATE $DIR/$tdir/$tfile 80000000 || error "truncate failed"
@@ -1586,14 +1588,14 @@ test_27p() {
 	exhaust_precreations 0 0x80000215
 	echo foo >> $DIR/$tdir/$tfile || error "append failed"
 	$CHECKSTAT -s 80000004 $DIR/$tdir/$tfile || error "checkstat failed"
-	$GETSTRIPE $DIR/$tdir/$tfile
+	$LFS getstripe $DIR/$tdir/$tfile
 
 	reset_enospc
 }
-run_test 27p "append to a truncated file with some full OSTs ==="
+run_test 27p "append to a truncated file with some full OSTs"
 
 test_27q() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
@@ -1601,9 +1603,10 @@ test_27q() {
 	reset_enospc
 	rm -f $DIR/$tdir/$tfile
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$MCREATE $DIR/$tdir/$tfile || error "mcreate $DIR/$tdir/$tfile failed"
-	$TRUNCATE $DIR/$tdir/$tfile 80000000 ||error "truncate $DIR/$tdir/$tfile failed"
+	$TRUNCATE $DIR/$tdir/$tfile 80000000 ||
+		error "truncate $DIR/$tdir/$tfile failed"
 	$CHECKSTAT -s 80000000 $DIR/$tdir/$tfile || error "checkstat failed"
 
 	exhaust_all_precreations 0x215
@@ -1613,10 +1616,10 @@ test_27q() {
 
 	reset_enospc
 }
-run_test 27q "append to truncated file with all OSTs full (should error) ==="
+run_test 27q "append to truncated file with all OSTs full (should error)"
 
 test_27r() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
@@ -1625,18 +1628,18 @@ test_27r() {
 	rm -f $DIR/$tdir/$tfile
 	exhaust_precreations 0 0x80000215
 
-	$SETSTRIPE -i 0 -c 2 $DIR/$tdir/$tfile # && error
+	$LFS setstripe -i 0 -c 2 $DIR/$tdir/$tfile # && error
 
 	reset_enospc
 }
 run_test 27r "stripe file with some full OSTs (shouldn't LBUG) ="
 
 test_27s() { # bug 10725
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local stripe_size=$((4096 * 1024 * 1024))	# 2^32
 	local stripe_count=0
 	[ $OSTCOUNT -eq 1 ] || stripe_count=2
-	$SETSTRIPE -S $stripe_size -c $stripe_count $DIR/$tdir &&
+	$LFS setstripe -S $stripe_size -c $stripe_count $DIR/$tdir &&
 		error "stripe width >= 2^32 succeeded" || true
 
 }
@@ -1653,7 +1656,7 @@ test_27t() { # bug 10864
 run_test 27t "check that utils parse path correctly"
 
 test_27u() { # bug 4900
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	local index
 	local list=$(comma_list $(mdts_nodes))
@@ -1661,30 +1664,30 @@ test_27u() { # bug 4900
 #define OBD_FAIL_MDS_OSC_PRECREATE      0x139
 	do_nodes $list $LCTL set_param fail_loc=0x139
 	test_mkdir -p $DIR/$tdir
-	rm -rf $DIR/$tdir/*
+	trap simple_cleanup_common EXIT
 	createmany -o $DIR/$tdir/t- 1000
 	do_nodes $list $LCTL set_param fail_loc=0
 
 	TLOG=$TMP/$tfile.getstripe
-	$GETSTRIPE $DIR/$tdir > $TLOG
+	$LFS getstripe $DIR/$tdir > $TLOG
 	OBJS=$(awk -vobj=0 '($1 == 0) { obj += 1 } END { print obj; }' $TLOG)
 	unlinkmany $DIR/$tdir/t- 1000
+	trap 0
 	[[ $OBJS -gt 0 ]] &&
 		error "$OBJS objects created on OST-0. See $TLOG" || pass
 }
-run_test 27u "skip object creation on OSC w/o objects =========="
+run_test 27u "skip object creation on OSC w/o objects"
 
 test_27v() { # bug 4900
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        remote_ost_nodsh && skip "remote OST with nodsh" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
 
-        exhaust_all_precreations 0x215
-        reset_enospc
+	exhaust_all_precreations 0x215
+	reset_enospc
 
-        test_mkdir -p $DIR/$tdir
-        $SETSTRIPE -c 1 $DIR/$tdir         # 1 stripe / file
+	$LFS setstripe -c 1 $DIR/$tdir         # 1 stripe / file
 
         touch $DIR/$tdir/$tfile
         #define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
@@ -1703,51 +1706,52 @@ test_27v() { # bug 4900
         sleep $((TIMEOUT / 2 - PROCESS))
         reset_enospc
 }
-run_test 27v "skip object creation on slow OST ================="
+run_test 27v "skip object creation on slow OST"
 
 test_27w() { # bug 10997
-        test_mkdir -p $DIR/$tdir || error "mkdir failed"
-        $SETSTRIPE -S 65536 $DIR/$tdir/f0 || error "setstripe failed"
-        [ $($GETSTRIPE -S $DIR/$tdir/f0) -ne 65536 ] &&
-                error "stripe size $size != 65536" || true
-        [ $($GETSTRIPE -d $DIR/$tdir | grep -c "stripe_count") -ne 1 ] &&
-                error "$GETSTRIPE -d $DIR/$tdir failed" || true
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -S 65536 $DIR/$tdir/f0 || error "setstripe failed"
+	[ $($LFS getstripe -S $DIR/$tdir/f0) -ne 65536 ] &&
+		error "stripe size $size != 65536" || true
+	[ $($LFS getstripe -d $DIR/$tdir | grep -c "stripe_count") -eq 0 ] &&
+		error "$LFS getstripe -d $DIR/$tdir no 'stripe_count'" || true
 }
-run_test 27w "check $SETSTRIPE -S option"
+run_test 27w "check $LFS setstripe -S and getstrip -d options"
 
 test_27wa() {
 	[[ $OSTCOUNT -lt 2 ]] &&
 		skip_env "skipping multiple stripe count/offset test" && return
 
-        test_mkdir -p $DIR/$tdir || error "mkdir failed"
-        for i in $(seq 1 $OSTCOUNT); do
-                offset=$((i - 1))
-                $SETSTRIPE -c $i -i $offset $DIR/$tdir/f$i ||
-                        error "setstripe -c $i -i $offset failed"
-                count=$($GETSTRIPE -c $DIR/$tdir/f$i)
-                index=$($GETSTRIPE -i $DIR/$tdir/f$i)
-                [ $count -ne $i ] && error "stripe count $count != $i" || true
-                [ $index -ne $offset ] &&
-                        error "stripe offset $index != $offset" || true
-        done
+	test_mkdir $DIR/$tdir
+	for i in $(seq 1 $OSTCOUNT); do
+		offset=$((i - 1))
+		$LFS setstripe -c $i -i $offset $DIR/$tdir/f$i ||
+			error "setstripe -c $i -i $offset failed"
+		count=$($LFS getstripe -c $DIR/$tdir/f$i)
+		index=$($LFS getstripe -i $DIR/$tdir/f$i)
+		[ $count -ne $i ] && error "stripe count $count != $i" || true
+		[ $index -ne $offset ] &&
+			error "stripe offset $index != $offset" || true
+	done
 }
-run_test 27wa "check $SETSTRIPE -c -i options"
+run_test 27wa "check $LFS setstripe -c -i options"
 
 test_27x() {
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "$OSTCOUNT < 2 OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	OFFSET=$(($OSTCOUNT - 1))
 	OSTIDX=0
 	local OST=$(ostname_from_index $OSTIDX)
 
-	test_mkdir -p $DIR/$tdir
-	$SETSTRIPE -c 1 $DIR/$tdir	# 1 stripe per file
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 1 $DIR/$tdir	# 1 stripe per file
 	do_facet ost$((OSTIDX + 1)) lctl set_param -n obdfilter.$OST.degraded 1
 	sleep_maxage
 	createmany -o $DIR/$tdir/$tfile $OSTCOUNT
-	for i in `seq 0 $OFFSET`; do
-		[ `$GETSTRIPE $DIR/$tdir/$tfile$i | grep -A 10 obdidx | awk '{print $1}' | grep -w "$OSTIDX"` ] &&
+	for i in $(seq 0 $OFFSET); do
+		[ $($LFS getstripe $DIR/$tdir/$tfile$i | grep -A 10 obdidx |
+			awk '{print $1}' | grep -w "$OSTIDX") ] &&
 		error "OST0 was degraded but new created file still use it"
 	done
 	do_facet ost$((OSTIDX + 1)) lctl set_param -n obdfilter.$OST.degraded 0
@@ -1755,18 +1759,17 @@ test_27x() {
 run_test 27x "create files while OST0 is degraded"
 
 test_27y() {
-	[[ $OSTCOUNT -lt 2 ]] &&
-		skip_env "$OSTCOUNT < 2 OSTs -- skipping" && return
-        remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        remote_ost_nodsh && skip "remote OST with nodsh" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 
-        local mdtosc=$(get_mdtosc_proc_path $SINGLEMDS $FSNAME-OST0000)
-        local last_id=$(do_facet $SINGLEMDS lctl get_param -n \
-            osc.$mdtosc.prealloc_last_id)
-        local next_id=$(do_facet $SINGLEMDS lctl get_param -n \
-            osc.$mdtosc.prealloc_next_id)
-        local fcount=$((last_id - next_id))
+	local mdtosc=$(get_mdtosc_proc_path $SINGLEMDS $FSNAME-OST0000)
+	local last_id=$(do_facet $SINGLEMDS lctl get_param -n \
+		osc.$mdtosc.prealloc_last_id)
+	local next_id=$(do_facet $SINGLEMDS lctl get_param -n \
+		osc.$mdtosc.prealloc_next_id)
+	local fcount=$((last_id - next_id))
 	[[ $fcount -eq 0 ]] && skip "not enough space on OST0" && return
 	[[ $fcount -gt $OSTCOUNT ]] && fcount=$OSTCOUNT
 
@@ -1790,8 +1793,8 @@ test_27y() {
 	done
 
 	OSTIDX=$(index_from_ostuuid $OST)
-	test_mkdir -p $DIR/$tdir
-	$SETSTRIPE -c 1 $DIR/$tdir      # 1 stripe / file
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 1 $DIR/$tdir      # 1 stripe / file
 
 	for OSC in $MDS_OSCS; do
 		OST=$(osc_to_ost $OSC)
@@ -1819,16 +1822,16 @@ test_27y() {
 	done
 
 	# all osp devices get activated, hence -1 stripe count restored
-	local stripecnt=0
+	local stripe_count=0
 
 	# sleep 2*lod_qos_maxage seconds waiting for lod qos to notice osp
 	# devices get activated.
 	sleep_maxage
-	$SETSTRIPE -c -1 $DIR/$tfile
-	stripecnt=$($GETSTRIPE -c $DIR/$tfile)
+	$LFS setstripe -c -1 $DIR/$tfile
+	stripe_count=$($LFS getstripe -c $DIR/$tfile)
 	rm -f $DIR/$tfile
-	[ $stripecnt -ne $OSTCOUNT ] &&
-		error "Of $OSTCOUNT OSTs, only $stripecnt is available"
+	[ $stripe_count -ne $OSTCOUNT ] &&
+		error "Of $OSTCOUNT OSTs, only $stripe_count is available"
 	return 0
 }
 run_test 27y "create files while OST0 is degraded and the rest inactive"
@@ -1877,17 +1880,18 @@ check_seq_oid()
 		fi
 		local obj_file="O/$seq/d$((oid %32))/$oid_hex"
 
-		local ff
+		local ff=""
 		#
 		# Don't unmount/remount the OSTs if we don't need to do that.
 		# LU-2577 changes filter_fid to be smaller, so debugfs needs
 		# update too, until that use mount/ll_decode_filter_fid/mount.
 		# Re-enable when debugfs will understand new filter_fid.
 		#
-		if false && [ $(facet_fstype ost$ost) == ldiskfs ]; then
+		if [ $(facet_fstype ost$ost) == ldiskfs ]; then
 			ff=$(do_facet ost$ost "$DEBUGFS -c -R 'stat $obj_file' \
 				$dev 2>/dev/null" | grep "parent=")
-		else
+		fi
+		if [ -z "$ff" ]; then
 			stop ost$ost
 			mount_fstype ost$ost
 			ff=$(do_facet ost$ost $LL_DECODE_FILTER_FID \
@@ -1903,57 +1907,65 @@ check_seq_oid()
 
 		# /mnt/O/0/d23/23: objid=23 seq=0 parent=[0x200000400:0x1e:0x1]
 		# fid: objid=23 seq=0 parent=[0x200000400:0x1e:0x0] stripe=1
-		local ff_parent=$(echo $ff|sed -e 's/.*parent=.//')
-		local ff_pseq=$(echo $ff_parent | cut -d: -f1)
-		local ff_poid=$(echo $ff_parent | cut -d: -f2)
+		#
+		# fid: parent=[0x200000400:0x1e:0x0] stripe=1 stripe_count=2 \
+		#	stripe_size=1048576 component_id=1 component_start=0 \
+		#	component_end=33554432
+		local ff_parent=$(sed -e 's/.*parent=.//' <<<$ff)
+		local ff_pseq=$(cut -d: -f1 <<<$ff_parent)
+		local ff_poid=$(cut -d: -f2 <<<$ff_parent)
 		local ff_pstripe
-		if echo $ff_parent | grep -q 'stripe='; then
-			ff_pstripe=$(echo $ff_parent | sed -e 's/.*stripe=//')
+		if grep -q 'stripe=' <<<$ff; then
+			ff_pstripe=$(sed -e 's/.*stripe=//' -e 's/ .*//' <<<$ff)
 		else
-			#
 			# $LL_DECODE_FILTER_FID does not print "stripe="; look
-			# into f_ver in this case.  See the comment on
-			# ff_parent.
-			#
-			ff_pstripe=$(echo $ff_parent | cut -d: -f3 |
-				sed -e 's/\]//')
+			# into f_ver in this case.  See comment on ff_parent.
+			ff_pstripe=$(cut -d: -f3 <<<$ff_parent | sed -e 's/]//')
 		fi
 
-                # compare lmm_seq and filter_fid->ff_parent.f_seq
-                [ $ff_pseq = $lmm_seq ] ||
-                        error "FF parent SEQ $ff_pseq != $lmm_seq"
-                # compare lmm_object_id and filter_fid->ff_parent.f_oid
-                [ $ff_poid = $lmm_oid ] ||
-                        error "FF parent OID $ff_poid != $lmm_oid"
+		# compare lmm_seq and filter_fid->ff_parent.f_seq
+		[ $ff_pseq = $lmm_seq ] ||
+			error "FF parent SEQ $ff_pseq != $lmm_seq"
+		# compare lmm_object_id and filter_fid->ff_parent.f_oid
+		[ $ff_poid = $lmm_oid ] ||
+			error "FF parent OID $ff_poid != $lmm_oid"
 		(($ff_pstripe == $stripe_nr)) ||
-                        error "FF stripe $ff_pstripe != $stripe_nr"
+			error "FF stripe $ff_pstripe != $stripe_nr"
 
-                stripe_nr=$((stripe_nr + 1))
-        done
+		stripe_nr=$((stripe_nr + 1))
+		[ $(lustre_version_code client) -lt $(version_code 2.9.55) ] &&
+			continue
+		if grep -q 'stripe_count=' <<<$ff; then
+			local ff_scnt=$(sed -e 's/.*stripe_count=//' \
+					    -e 's/ .*//' <<<$ff)
+			[ $lmm_count = $ff_scnt ] ||
+				error "FF stripe count $lmm_count != $ff_scnt"
+		fi
+	done
 }
 
 test_27z() {
-        remote_ost_nodsh && skip "remote OST with nodsh" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 
-        $SETSTRIPE -c 1 -i 0 -S 64k $DIR/$tdir/$tfile-1 ||
-                { error "setstripe -c -1 failed"; return 1; }
-        # We need to send a write to every object to get parent FID info set.
-        # This _should_ also work for setattr, but does not currently.
-        # touch $DIR/$tdir/$tfile-1 ||
-        dd if=/dev/zero of=$DIR/$tdir/$tfile-1 bs=1M count=1 ||
-                { error "dd $tfile-1 failed"; return 2; }
-        $SETSTRIPE -c -1 -i $((OSTCOUNT - 1)) -S 1M $DIR/$tdir/$tfile-2 ||
-                { error "setstripe -c -1 failed"; return 3; }
-        dd if=/dev/zero of=$DIR/$tdir/$tfile-2 bs=1M count=$OSTCOUNT ||
-                { error "dd $tfile-2 failed"; return 4; }
+	$LFS setstripe -c 1 -i 0 -S 64k $DIR/$tdir/$tfile-1 ||
+		{ error "setstripe -c -1 failed"; return 1; }
+	# We need to send a write to every object to get parent FID info set.
+	# This _should_ also work for setattr, but does not currently.
+	# touch $DIR/$tdir/$tfile-1 ||
+	dd if=/dev/zero of=$DIR/$tdir/$tfile-1 bs=1M count=1 ||
+		{ error "dd $tfile-1 failed"; return 2; }
+	$LFS setstripe -c -1 -i $((OSTCOUNT - 1)) -S 1M $DIR/$tdir/$tfile-2 ||
+		{ error "setstripe -c -1 failed"; return 3; }
+	dd if=/dev/zero of=$DIR/$tdir/$tfile-2 bs=1M count=$OSTCOUNT ||
+		{ error "dd $tfile-2 failed"; return 4; }
 
-        # make sure write RPCs have been sent to OSTs
-        sync; sleep 5; sync
+	# make sure write RPCs have been sent to OSTs
+	sync; sleep 5; sync
 
-        check_seq_oid $DIR/$tdir/$tfile-1 || return 5
-        check_seq_oid $DIR/$tdir/$tfile-2 || return 6
+	check_seq_oid $DIR/$tdir/$tfile-1 || return 5
+	check_seq_oid $DIR/$tdir/$tfile-2 || return 6
 }
 run_test 27z "check SEQ/OID on the MDT and OST filesystems"
 
@@ -1976,7 +1988,7 @@ test_27A() { # b=19102
 run_test 27A "check filesystem-wide default LOV EA values"
 
 test_27B() { # LU-2523
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	rm -f $DIR/$tdir/f0 $DIR/$tdir/f1
 	touch $DIR/$tdir/f0
 	# open f1 with O_LOV_DELAY_CREATE
@@ -2007,7 +2019,7 @@ test_27C() { #LU-2871
 	local i
 	local j
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	cd $DIR/$tdir
 	for i in $(seq 0 $((OSTCOUNT - 1))); do
 		# set stripe across all OSTs starting from OST$i
@@ -2047,17 +2059,28 @@ test_27D() {
 	local ost_list=$(seq $first_ost $ost_step $last_ost)
 	local ost_range="$first_ost $last_ost $ost_step"
 
-	test_mkdir -p $DIR/$tdir
+	if ! combined_mgs_mds ; then
+		mount_mgs_client
+	fi
+
+	test_mkdir $DIR/$tdir
 	pool_add $POOL || error "pool_add failed"
 	pool_add_targets $POOL $ost_range || error "pool_add_targets failed"
 
 	local skip27D
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.64) ] &&
-		skip27D = "-s 29"
+	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.55) ] &&
+		skip27D += "-s 29"
+	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.9.55) -o \
+	  $(lustre_version_code client) -lt $(version_code 2.9.55) ] &&
+		skip27D += "-s 30,31"
 	llapi_layout_test -d$DIR/$tdir -p$POOL -o$OSTCOUNT $skip27D ||
 		error "llapi_layout_test failed"
 
-	cleanup_pools || error "cleanup_pools failed"
+	destroy_test_pools || error "destroy test pools failed"
+
+	if ! combined_mgs_mds ; then
+		umount_mgs_client
+	fi
 }
 run_test 27D "validate llapi_layout API"
 
@@ -2093,13 +2116,12 @@ test_27E() {
 run_test 27E "check that default extended attribute size properly increases"
 
 test_27F() { # LU-5346/LU-7975
-
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-
 	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.51) ]] &&
 		skip "Need MDS version at least 2.8.51" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	rm -f $DIR/$tdir/f0
 	$SETSTRIPE -c 2 $DIR/$tdir
 
@@ -2389,7 +2411,7 @@ link_one() {
 }
 
 test_31o() { # LU-2901
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	for LOOP in $(seq 100); do
 		rm -f $DIR/$tdir/$tfile*
 		for THREAD in $(seq 8); do
@@ -2426,10 +2448,10 @@ run_test 31p "remove of open striped directory"
 cleanup_test32_mount() {
 	local rc=0
 	trap 0
-	local loopdev=$(losetup -a | grep $EXT2_DEV | sed -ne 's/:.*$/p')
+	local loopdev=$(losetup -a | grep $EXT2_DEV | sed -ne 's/:.*$//p')
 	$UMOUNT $DIR/$tdir/ext2-mountpoint || rc=$?
 	losetup -d $loopdev || true
-	rm -rf $DIR/$tdir/ext2-mountpoint
+	rm -rf $DIR/$tdir
 	return $rc
 }
 
@@ -2478,52 +2500,52 @@ test_32d() {
 	ls -al $DIR/$tdir/ext2-mountpoint/../d2/test_dir || error
 	cleanup_test32_mount
 }
-run_test 32d "open d32d/ext2-mountpoint/../d2/test_dir ========="
+run_test 32d "open d32d/ext2-mountpoint/../d2/test_dir"
 
 test_32e() {
-	[ -e $DIR/d32e ] && rm -fr $DIR/d32e
-	test_mkdir -p $DIR/d32e/tmp
-	TMP_DIR=$DIR/d32e/tmp
-	ln -s $DIR/d32e $TMP_DIR/symlink11
-	ln -s $TMP_DIR/symlink11 $TMP_DIR/../symlink01
-	$CHECKSTAT -t link $DIR/d32e/tmp/symlink11 || error
-	$CHECKSTAT -t link $DIR/d32e/symlink01 || error
+	rm -fr $DIR/$tdir
+	test_mkdir -p $DIR/$tdir/tmp
+	local tmp_dir=$DIR/$tdir/tmp
+	ln -s $DIR/$tdir $tmp_dir/symlink11
+	ln -s $tmp_dir/symlink11 $tmp_dir/../symlink01
+	$CHECKSTAT -t link $DIR/$tdir/tmp/symlink11 || error "symlink11 bad"
+	$CHECKSTAT -t link $DIR/$tdir/symlink01 || error "symlink01 bad"
 }
-run_test 32e "stat d32e/symlink->tmp/symlink->lustre-subdir ===="
+run_test 32e "stat d32e/symlink->tmp/symlink->lustre-subdir"
 
 test_32f() {
-	[ -e $DIR/d32f ] && rm -fr $DIR/d32f
-	test_mkdir -p $DIR/d32f/tmp
-	TMP_DIR=$DIR/d32f/tmp
-	ln -s $DIR/d32f $TMP_DIR/symlink11
-	ln -s $TMP_DIR/symlink11 $TMP_DIR/../symlink01
-	ls $DIR/d32f/tmp/symlink11  || error
-	ls $DIR/d32f/symlink01 || error
+	rm -fr $DIR/$tdir
+	test_mkdir -p $DIR/$tdir/tmp
+	local tmp_dir=$DIR/$tdir/tmp
+	ln -s $DIR/$tdir $tmp_dir/symlink11
+	ln -s $tmp_dir/symlink11 $tmp_dir/../symlink01
+	ls $DIR/$tdir/tmp/symlink11  || error "symlink11 bad"
+	ls $DIR/$tdir/symlink01 || error "symlink01 bad"
 }
-run_test 32f "open d32f/symlink->tmp/symlink->lustre-subdir ===="
+run_test 32f "open d32f/symlink->tmp/symlink->lustre-subdir"
 
 test_32g() {
-	TMP_DIR=$DIR/$tdir/tmp
-	test_mkdir -p $DIR/$tdir/tmp
+	local tmp_dir=$DIR/$tdir/tmp
+	test_mkdir -p $tmp_dir
 	test_mkdir $DIR/${tdir}2
-	ln -s $DIR/${tdir}2 $TMP_DIR/symlink12
-	ln -s $TMP_DIR/symlink12 $TMP_DIR/../symlink02
-	$CHECKSTAT -t link $TMP_DIR/symlink12 || error
-	$CHECKSTAT -t link $DIR/$tdir/symlink02 || error
-	$CHECKSTAT -t dir -f $TMP_DIR/symlink12 || error
-	$CHECKSTAT -t dir -f $DIR/$tdir/symlink02 || error
+	ln -s $DIR/${tdir}2 $tmp_dir/symlink12
+	ln -s $tmp_dir/symlink12 $tmp_dir/../symlink02
+	$CHECKSTAT -t link $tmp_dir/symlink12 || error "symlink12 not a link"
+	$CHECKSTAT -t link $DIR/$tdir/symlink02 || error "symlink02 not a link"
+	$CHECKSTAT -t dir -f $tmp_dir/symlink12 || error "symlink12 not a dir"
+	$CHECKSTAT -t dir -f $DIR/$tdir/symlink02 || error "symlink12 not a dir"
 }
 run_test 32g "stat d32g/symlink->tmp/symlink->lustre-subdir/${tdir}2"
 
 test_32h() {
 	rm -fr $DIR/$tdir $DIR/${tdir}2
-	TMP_DIR=$DIR/$tdir/tmp
-	test_mkdir -p $DIR/$tdir/tmp
+	tmp_dir=$DIR/$tdir/tmp
+	test_mkdir -p $tmp_dir
 	test_mkdir $DIR/${tdir}2
-	ln -s $DIR/${tdir}2 $TMP_DIR/symlink12
-	ln -s $TMP_DIR/symlink12 $TMP_DIR/../symlink02
-	ls $TMP_DIR/symlink12 || error
-	ls $DIR/$tdir/symlink02  || error
+	ln -s $DIR/${tdir}2 $tmp_dir/symlink12
+	ln -s $tmp_dir/symlink12 $tmp_dir/../symlink02
+	ls $tmp_dir/symlink12 || error "listing symlink12"
+	ls $DIR/$tdir/symlink02  || error "listing symlink02"
 }
 run_test 32h "open d32h/symlink->tmp/symlink->lustre-subdir/${tdir}2"
 
@@ -2613,59 +2635,49 @@ test_32o() {
 run_test 32o "stat d32o/symlink->tmp/symlink->lustre-root/$tfile"
 
 test_32p() {
-    log 32p_1
+	log 32p_1
 	rm -fr $DIR/d32p
-    log 32p_2
+	log 32p_2
 	rm -f $DIR/$tfile
-    log 32p_3
+	log 32p_3
 	touch $DIR/$tfile
-    log 32p_4
+	log 32p_4
 	test_mkdir -p $DIR/d32p/tmp
-    log 32p_5
+	log 32p_5
 	TMP_DIR=$DIR/d32p/tmp
-    log 32p_6
+	log 32p_6
 	ln -s $DIR/$tfile $TMP_DIR/symlink12
-    log 32p_7
+	log 32p_7
 	ln -s $TMP_DIR/symlink12 $TMP_DIR/../symlink02
-    log 32p_8
+	log 32p_8
 	cat $DIR/d32p/tmp/symlink12 || error
-    log 32p_9
+	log 32p_9
 	cat $DIR/d32p/symlink02 || error
-    log 32p_10
+	log 32p_10
 }
 run_test 32p "open d32p/symlink->tmp/symlink->lustre-root/$tfile"
 
-cleanup_testdir_mount() {
-	local rc=0
-	trap 0
-	local loopdev=$(losetup -a | grep $EXT2_DEV | sed -ne 's/:.*$/p')
-	$UMOUNT $DIR/$tdir || rc=$?
-	losetup -d $loopdev || true
-	rm -rf $DIR/$tdir
-	return $rc
-}
-
 test_32q() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	[ -e $DIR/$tdir ] && rm -fr $DIR/$tdir
-	trap cleanup_testdir_mount EXIT
-	test_mkdir -p $DIR/$tdir
-        touch $DIR/$tdir/under_the_mount
-	mount -t ext2 -o loop $EXT2_DEV $DIR/$tdir
-	ls $DIR/$tdir | grep "\<under_the_mount\>" && error
-	cleanup_testdir_mount
+	trap cleanup_test32_mount EXIT
+	test_mkdir -p $DIR/$tdir/ext2-mountpoint
+	touch $DIR/$tdir/ext2-mountpoint/under_the_mount
+	mount -t ext2 -o loop $EXT2_DEV $DIR/$tdir/ext2-mountpoint
+	ls $DIR/$tdir/ext2-mountpoint | grep "\<under_the_mount\>" && error
+	cleanup_test32_mount
 }
 run_test 32q "stat follows mountpoints in Lustre (should return error)"
 
 test_32r() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	[ -e $DIR/$tdir ] && rm -fr $DIR/$tdir
-	trap cleanup_testdir_mount EXIT
-	test_mkdir -p $DIR/$tdir
-        touch $DIR/$tdir/under_the_mount
-	mount -t ext2 -o loop $EXT2_DEV $DIR/$tdir
-	ls $DIR/$tdir | grep -q under_the_mount && error || true
-	cleanup_testdir_mount
+	trap cleanup_test32_mount EXIT
+	test_mkdir -p $DIR/$tdir/ext2-mountpoint
+	touch $DIR/$tdir/ext2-mountpoint/under_the_mount
+	mount -t ext2 -o loop $EXT2_DEV $DIR/$tdir/ext2-mountpoint
+	ls $DIR/$tdir/ext2-mountpoint | grep -q under_the_mount && error || true
+	cleanup_test32_mount
 }
 run_test 32r "opendir follows mountpoints in Lustre (should return error)"
 
@@ -2678,38 +2690,39 @@ test_33aa() {
 	$RUNAS $OPENFILE -f O_RDWR $DIR/$tfile && error || true
 	log 33_2
 }
-run_test 33aa "write file with mode 444 (should return error) ===="
+run_test 33aa "write file with mode 444 (should return error)"
 
 test_33a() {
-        rm -fr $DIR/d33
-        test_mkdir -p $DIR/d33
-        chown $RUNAS_ID $DIR/d33
-        $RUNAS $OPENFILE -f O_RDWR:O_CREAT -m 0444 $DIR/d33/f33|| error "create"
-        $RUNAS $OPENFILE -f O_RDWR:O_CREAT -m 0444 $DIR/d33/f33 && \
+	rm -fr $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	chown $RUNAS_ID $DIR/$tdir
+	$RUNAS $OPENFILE -f O_RDWR:O_CREAT -m 0444 $DIR/$tdir/$tfile ||
+		error "$RUNAS create $tdir/$tfile failed"
+	$RUNAS $OPENFILE -f O_RDWR:O_CREAT -m 0444 $DIR/$tdir/$tfile &&
 		error "open RDWR" || true
 }
 run_test 33a "test open file(mode=0444) with O_RDWR (should return error)"
 
 test_33b() {
-        rm -fr $DIR/d33
-        test_mkdir -p $DIR/d33
-        chown $RUNAS_ID $DIR/d33
-        $RUNAS $OPENFILE -f 1286739555 $DIR/d33/f33 || true
+	rm -fr $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	chown $RUNAS_ID $DIR/$tdir
+	$RUNAS $OPENFILE -f 1286739555 $DIR/$tdir/$tfile || true
 }
 run_test 33b "test open file with malformed flags (No panic)"
 
 test_33c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        local ostnum
-        local ostname
-        local write_bytes
-        local all_zeros
+	local ostnum
+	local ostname
+	local write_bytes
+	local all_zeros
 
-        remote_ost_nodsh && skip "remote OST with nodsh" && return
-        all_zeros=:
-        rm -fr $DIR/d33
-        test_mkdir -p $DIR/d33
-        # Read: 0, Write: 4, create/destroy: 2/0, stat: 1, punch: 0
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+	all_zeros=:
+	rm -fr $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	# Read: 0, Write: 4, create/destroy: 2/0, stat: 1, punch: 0
 
         sync
         for ostnum in $(seq $OSTCOUNT); do
@@ -2732,10 +2745,10 @@ test_33c() {
 
         $all_zeros || return 0
 
-        # Write four bytes
-        echo foo > $DIR/d33/bar
-        # Really write them
-        sync
+	# Write four bytes
+	echo foo > $DIR/$tdir/bar
+	# Really write them
+	sync
 
         # Total up write_bytes after writing.  We'd better find non-zeros.
         for ostnum in $(seq $OSTCOUNT); do
@@ -2770,7 +2783,7 @@ test_33d() {
 	local MDTIDX=1
 	local remote_dir=$DIR/$tdir/remote_dir
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$LFS mkdir -i $MDTIDX $remote_dir ||
 		error "create remote directory failed"
 
@@ -2989,19 +3002,19 @@ test_35a() {
 	$RUNAS $DIR/f35a && error || true
 	rm $DIR/f35a
 }
-run_test 35a "exec file with mode 444 (should return and not leak) ====="
+run_test 35a "exec file with mode 444 (should return and not leak)"
 
 test_36a() {
 	rm -f $DIR/f36
 	utime $DIR/f36 || error
 }
-run_test 36a "MDS utime check (mknod, utime) ==================="
+run_test 36a "MDS utime check (mknod, utime)"
 
 test_36b() {
 	echo "" > $DIR/f36
 	utime $DIR/f36 || error
 }
-run_test 36b "OST utime check (open, utime) ===================="
+run_test 36b "OST utime check (open, utime)"
 
 test_36c() {
 	rm -f $DIR/d36/f36
@@ -3009,23 +3022,23 @@ test_36c() {
 	chown $RUNAS_ID $DIR/d36
 	$RUNAS utime $DIR/d36/f36 || error
 }
-run_test 36c "non-root MDS utime check (mknod, utime) =========="
+run_test 36c "non-root MDS utime check (mknod, utime)"
 
 test_36d() {
 	[ ! -d $DIR/d36 ] && test_36c
 	echo "" > $DIR/d36/f36
 	$RUNAS utime $DIR/d36/f36 || error
 }
-run_test 36d "non-root OST utime check (open, utime) ==========="
+run_test 36d "non-root OST utime check (open, utime)"
 
 test_36e() {
 	[ $RUNAS_ID -eq $UID ] && skip_env "RUNAS_ID = UID = $UID -- skipping" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/$tfile
-	$RUNAS utime $DIR/$tdir/$tfile && \
+	$RUNAS utime $DIR/$tdir/$tfile &&
 		error "utime worked, expected failure" || true
 }
-run_test 36e "utime on non-owned file (should return error) ===="
+run_test 36e "utime on non-owned file (should return error)"
 
 subr_36fh() {
 	local fl="$1"
@@ -3034,7 +3047,7 @@ subr_36fh() {
 	export LANG=C LC_LANG=C # for date language
 
 	DATESTR="Dec 20  2000"
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	lctl set_param fail_loc=$fl
 	date; date +%s
 	cp /etc/hosts $DIR/$tdir/$tfile
@@ -3068,7 +3081,7 @@ test_36g() {
 	local fmd_before
 	local fmd_after
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	fmd_max_age=$(do_facet ost1 \
 		"lctl get_param -n obdfilter.*.client_cache_seconds 2> /dev/null | \
 		head -n 1")
@@ -3145,10 +3158,10 @@ test_39a() { # was test_39
 		error "O_TRUNC didn't change timestamps"
 	fi
 }
-run_test 39a "mtime changed on create ==========================="
+run_test 39a "mtime changed on create"
 
 test_39b() {
-	test_mkdir -p -c1 $DIR/$tdir
+	test_mkdir -c1 $DIR/$tdir
 	cp -p /etc/passwd $DIR/$tdir/fopen
 	cp -p /etc/passwd $DIR/$tdir/flink
 	cp -p /etc/passwd $DIR/$tdir/funlink
@@ -3529,19 +3542,19 @@ test_39o() {
 		error "wrong links count $links1 != $links3"
 	return 0
 }
-run_test 39o "directory cached attributes updated after create ========"
+run_test 39o "directory cached attributes updated after create"
 
 test_39p() {
 	[[ $MDSCOUNT -lt 2 ]] && skip "needs >= 2 MDTs" && return
 	local MDTIDX=1
-	TESTDIR=$DIR/$tdir/$tfile
+	TESTDIR=$DIR/$tdir/$tdir
 	[ -e $TESTDIR ] && rm -rf $TESTDIR
 	test_mkdir -p $TESTDIR
 	cd $TESTDIR
 	links1=2
 	ls
-	$LFS mkdir -i $MDTIDX $TESTDIR/remote_dir1
-	$LFS mkdir -i $MDTIDX $TESTDIR/remote_dir2
+	test_mkdir -i $MDTIDX $TESTDIR/remote_dir1
+	test_mkdir -i $MDTIDX $TESTDIR/remote_dir2
 	ls
 	links2=$(stat -c %h .)
 	[ $(($links1 + 2)) != $links2 ] &&
@@ -3583,7 +3596,7 @@ test_41() {
 run_test 41 "test small file write + fstat ====================="
 
 count_ost_writes() {
-	lctl get_param -n osc.*.stats |
+	lctl get_param -n ${OSC}.*.stats |
 		awk -vwrites=0 '/ost_write/ { writes += $2 } \
 			END { printf("%0.0f", writes) }'
 }
@@ -3643,7 +3656,7 @@ setup_test42() {
 test_42a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	setup_test42
-	cancel_lru_locks osc
+	cancel_lru_locks $OSC
 	stop_writeback
 	sync; sleep 1; sync # just to be safe
 	BEFOREWRITES=`count_ost_writes`
@@ -3654,12 +3667,12 @@ test_42a() {
 		error "$BEFOREWRITES < $AFTERWRITES"
 	start_writeback
 }
-run_test 42a "ensure that we don't flush on close =============="
+run_test 42a "ensure that we don't flush on close"
 
 test_42b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	setup_test42
-	cancel_lru_locks osc
+	cancel_lru_locks $OSC
 	stop_writeback
 	sync
 	dd if=/dev/zero of=$DIR/f42b bs=1024 count=100
@@ -3695,21 +3708,21 @@ run_test 42b "test destroy of file with cached dirty data ======"
 # start the file with a full-file pw lock to match against
 # until the truncate.
 trunc_test() {
-        test=$1
-        file=$DIR/$test
-        offset=$2
-	cancel_lru_locks osc
+	test=$1
+	file=$DIR/$test
+	offset=$2
+	cancel_lru_locks $OSC
 	stop_writeback
 	# prime the file with 0,EOF PW to match
 	touch $file
         $TRUNCATE $file 0
         sync; sync
 	# now the real test..
-        dd if=/dev/zero of=$file bs=1024 count=100
-        BEFOREWRITES=`count_ost_writes`
-        $TRUNCATE $file $offset
-        cancel_lru_locks osc
-        AFTERWRITES=`count_ost_writes`
+	dd if=/dev/zero of=$file bs=1024 count=100
+	BEFOREWRITES=`count_ost_writes`
+	$TRUNCATE $file $offset
+	cancel_lru_locks $OSC
+	AFTERWRITES=`count_ost_writes`
 	start_writeback
 }
 
@@ -3741,7 +3754,7 @@ test_42e() { # bug22074
 	local max_dirty_mb
 	local warmup_files
 
-	test_mkdir -p $DIR/${tdir}e
+	test_mkdir $DIR/${tdir}e
 	$SETSTRIPE -c 1 $TDIR
 	createmany -o $TDIR/f $files
 
@@ -3808,63 +3821,60 @@ test_42e() { # bug22074
 run_test 42e "verify sub-RPC writes are not done synchronously"
 
 test_43A() { # was test_43
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	cp -p /bin/ls $DIR/$tdir/$tfile
 	$MULTIOP $DIR/$tdir/$tfile Ow_c &
 	pid=$!
 	# give multiop a chance to open
 	sleep 1
 
-	$DIR/$tdir/$tfile && error || true
+	$DIR/$tdir/$tfile && error "execute $DIR/$tdir/$tfile succeeded" || true
 	kill -USR1 $pid
 }
 run_test 43A "execution of file opened for write should return -ETXTBSY"
 
 test_43a() {
-	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
-	cp -p `which $MULTIOP` $DIR/$tdir/multiop ||
-			cp -p multiop $DIR/$tdir/multiop
+	test_mkdir $DIR/$tdir
+	cp -p $(which $MULTIOP) $DIR/$tdir/multiop ||
+		cp -p multiop $DIR/$tdir/multiop
 	MULTIOP_PROG=$DIR/$tdir/multiop multiop_bg_pause $TMP/$tfile.junk O_c ||
-			return 1
-        MULTIOP_PID=$!
-        $MULTIOP $DIR/$tdir/multiop Oc && error "expected error, got success"
-        kill -USR1 $MULTIOP_PID || return 2
-        wait $MULTIOP_PID || return 3
-	rm $TMP/$tfile.junk $DIR/$tdir/multiop
+		error "multiop open $TMP/$tfile.junk failed"
+	MULTIOP_PID=$!
+	$MULTIOP $DIR/$tdir/multiop Oc && error "expected error, got success"
+	kill -USR1 $MULTIOP_PID || error "kill -USR1 PID $MULTIOP_PID failed"
+	wait $MULTIOP_PID || error "wait PID $MULTIOP_PID failed"
 }
 run_test 43a "open(RDWR) of file being executed should return -ETXTBSY"
 
 test_43b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
-	cp -p `which $MULTIOP` $DIR/$tdir/multiop ||
-			cp -p multiop $DIR/$tdir/multiop
+	test_mkdir $DIR/$tdir
+	cp -p $(which $MULTIOP) $DIR/$tdir/multiop ||
+		cp -p multiop $DIR/$tdir/multiop
 	MULTIOP_PROG=$DIR/$tdir/multiop multiop_bg_pause $TMP/$tfile.junk O_c ||
-			return 1
-        MULTIOP_PID=$!
-        $TRUNCATE $DIR/$tdir/multiop 0 && error "expected error, got success"
-        kill -USR1 $MULTIOP_PID || return 2
-        wait $MULTIOP_PID || return 3
-	rm $TMP/$tfile.junk $DIR/$tdir/multiop
+		error "multiop open $TMP/$tfile.junk failed"
+	MULTIOP_PID=$!
+	$TRUNCATE $DIR/$tdir/multiop 0 && error "expected error, got success"
+	kill -USR1 $MULTIOP_PID || error "kill -USR1 PID $MULTIOP_PID failed"
+	wait $MULTIOP_PID || error "wait PID $MULTIOP_PID failed"
 }
 run_test 43b "truncate of file being executed should return -ETXTBSY"
 
 test_43c() {
 	local testdir="$DIR/$tdir"
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $testdir
 	cp $SHELL $testdir/
-	( cd $(dirname $SHELL) && md5sum $(basename $SHELL) ) | \
-		( cd $testdir && md5sum -c)
+	( cd $(dirname $SHELL) && md5sum $(basename $SHELL) ) |
+		( cd $testdir && md5sum -c )
 }
-run_test 43c "md5sum of copy into lustre========================"
+run_test 43c "md5sum of copy into lustre"
 
 test_44A() { # was test_44
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping 2-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	dd if=/dev/zero of=$DIR/f1 bs=4k count=1 seek=1023
 	dd if=$DIR/f1 bs=4k count=1 > /dev/null
 }
-run_test 44A "zero length read from a sparse stripe ============="
+run_test 44A "zero length read from a sparse stripe"
 
 test_44a() {
 	local nstripe=$($LCTL lov_getconfig $DIR | grep default_stripe_count: |
@@ -3911,7 +3921,7 @@ run_test 44a "test sparse pwrite ==============================="
 
 dirty_osc_total() {
 	tot=0
-	for d in `lctl get_param -n osc.*.cur_dirty_bytes`; do
+	for d in `lctl get_param -n ${OSC}.*.cur_dirty_bytes`; do
 		tot=$(($tot + $d))
 	done
 	echo $tot
@@ -3975,15 +3985,15 @@ test_48a() { # bug 2399
 	test_mkdir $DIR/$tdir
 	cd $DIR/$tdir
 	mv $DIR/$tdir $DIR/$tdir.new || error "move directory failed"
-	test_mkdir $DIR/$tdir || error "recreate directory failed"
+	test_mkdir $DIR/$tdir
 	touch foo || error "'touch foo' failed after recreating cwd"
-	test_mkdir bar || error "'mkdir foo' failed after recreating cwd"
+	test_mkdir bar
 	touch .foo || error "'touch .foo' failed after recreating cwd"
-	test_mkdir .bar || error "'mkdir .foo' failed after recreating cwd"
+	test_mkdir .bar
 	ls . > /dev/null || error "'ls .' failed after recreating cwd"
 	ls .. > /dev/null || error "'ls ..' failed after removing cwd"
 	cd . || error "'cd .' failed after recreating cwd"
-	test_mkdir . && error "'mkdir .' worked after recreating cwd"
+	mkdir . && error "'mkdir .' worked after recreating cwd"
 	rmdir . && error "'rmdir .' worked after recreating cwd"
 	ln -s . baz || error "'ln -s .' failed after recreating cwd"
 	cd .. || error "'cd ..' failed after recreating cwd"
@@ -3996,12 +4006,12 @@ test_48b() { # bug 2399
 	cd $DIR/$tdir
 	rmdir $DIR/$tdir || error "remove cwd $DIR/$tdir failed"
 	touch foo && error "'touch foo' worked after removing cwd"
-	test_mkdir foo && error "'mkdir foo' worked after removing cwd"
+	mkdir foo && error "'mkdir foo' worked after removing cwd"
 	touch .foo && error "'touch .foo' worked after removing cwd"
-	test_mkdir .foo && error "'mkdir .foo' worked after removing cwd"
+	mkdir .foo && error "'mkdir .foo' worked after removing cwd"
 	ls . > /dev/null && error "'ls .' worked after removing cwd"
 	ls .. > /dev/null || error "'ls ..' failed after removing cwd"
-	test_mkdir . && error "'mkdir .' worked after removing cwd"
+	mkdir . && error "'mkdir .' worked after removing cwd"
 	rmdir . && error "'rmdir .' worked after removing cwd"
 	ln -s . foo && error "'ln -s .' worked after removing cwd"
 	cd .. || echo "'cd ..' failed after removing cwd `pwd`"  #bug 3517
@@ -4016,12 +4026,12 @@ test_48c() { # bug 2350
 	cd $DIR/$tdir/dir
 	$TRACE rmdir $DIR/$tdir/dir || error "remove cwd $DIR/$tdir/dir failed"
 	$TRACE touch foo && error "touch foo worked after removing cwd"
-	$TRACE test_mkdir foo && error "'mkdir foo' worked after removing cwd"
+	$TRACE mkdir foo && error "'mkdir foo' worked after removing cwd"
 	touch .foo && error "touch .foo worked after removing cwd"
-	test_mkdir .foo && error "mkdir .foo worked after removing cwd"
+	mkdir .foo && error "mkdir .foo worked after removing cwd"
 	$TRACE ls . && error "'ls .' worked after removing cwd"
 	$TRACE ls .. || error "'ls ..' failed after removing cwd"
-	$TRACE test_mkdir . && error "'mkdir .' worked after removing cwd"
+	$TRACE mkdir . && error "'mkdir .' worked after removing cwd"
 	$TRACE rmdir . && error "'rmdir .' worked after removing cwd"
 	$TRACE ln -s . foo && error "'ln -s .' worked after removing cwd"
 	$TRACE cd .. || echo "'cd ..' failed after removing cwd `pwd`" #bug 3415
@@ -4037,12 +4047,12 @@ test_48d() { # bug 2350
 	$TRACE rmdir $DIR/$tdir/dir || error "remove cwd $DIR/$tdir/dir failed"
 	$TRACE rmdir $DIR/$tdir || error "remove parent $DIR/$tdir failed"
 	$TRACE touch foo && error "'touch foo' worked after removing parent"
-	$TRACE test_mkdir foo && error "mkdir foo worked after removing parent"
+	$TRACE mkdir foo && error "mkdir foo worked after removing parent"
 	touch .foo && error "'touch .foo' worked after removing parent"
-	test_mkdir .foo && error "mkdir .foo worked after removing parent"
+	mkdir .foo && error "mkdir .foo worked after removing parent"
 	$TRACE ls . && error "'ls .' worked after removing parent"
 	$TRACE ls .. && error "'ls ..' worked after removing parent"
-	$TRACE test_mkdir . && error "'mkdir .' worked after removing parent"
+	$TRACE mkdir . && error "'mkdir .' worked after removing parent"
 	$TRACE rmdir . && error "'rmdir .' worked after removing parent"
 	$TRACE ln -s . foo && error "'ln -s .' worked after removing parent"
 	true
@@ -4136,7 +4146,7 @@ test_51b() {
 	# cleanup the directory
 	rm -fr $dir
 
-	test_mkdir -p -c1 $dir
+	test_mkdir -c1 $dir
 
 	$LFS df
 	$LFS df -i
@@ -4152,11 +4162,13 @@ test_51b() {
 	[[ $numfree -lt $nrdirs ]] && skip "not enough blocks ($numfree)" &&
 		return
 
-	trap cleanup_print_lfsdf EXIT
+	trap cleanup_print_lfs_df EXIT
 
 	# create files
-	createmany -d $dir/d $nrdirs ||
+	createmany -d $dir/d $nrdirs || {
+		unlinkmany $dir/d $nrdirs
 		error "failed to create $nrdirs subdirs in MDT$mdtidx:$dir"
+	}
 
 	# really created :
 	nrdirs=$(ls -U $dir | wc -l)
@@ -4193,11 +4205,10 @@ run_test 51b "exceed 64k subdirectory nlink limit on create, verify unlink"
 
 test_51d() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[[ $OSTCOUNT -lt 3 ]] &&
-		skip_env "skipping test with few OSTs" && return
-	test_mkdir -p $DIR/$tdir
+	[[ $OSTCOUNT -lt 3 ]] && skip_env "needs >= 3 OSTs" && return
+	test_mkdir $DIR/$tdir
 	createmany -o $DIR/$tdir/t- 1000
-	$GETSTRIPE $DIR/$tdir > $TMP/$tfile
+	$LFS getstripe $DIR/$tdir > $TMP/$tfile
 	for N in $(seq 0 $((OSTCOUNT - 1))); do
 		OBJS[$N]=$(awk -vobjs=0 '($1 == '$N') { objs += 1 } \
 			END { printf("%0.0f", objs) }' $TMP/$tfile)
@@ -4231,12 +4242,12 @@ run_test 51d "check object distribution"
 
 test_51e() {
 	if [ "$(facet_fstype $SINGLEMDS)" != ldiskfs ]; then
-		skip "Only applicable to ldiskfs-based MDTs"
+		skip "ldiskfs only test"
 		return
 	fi
 
-	test_mkdir -c1 $DIR/$tdir	|| error "create $tdir failed"
-	test_mkdir -c1 $DIR/$tdir/d0	|| error "create d0 failed"
+	test_mkdir -c1 $DIR/$tdir
+	test_mkdir -c1 $DIR/$tdir/d0
 
 	touch $DIR/$tdir/d0/foo
 	createmany -l $DIR/$tdir/d0/foo $DIR/$tdir/d0/f- 65001 &&
@@ -4246,9 +4257,40 @@ test_51e() {
 }
 run_test 51e "check file nlink limit"
 
+test_51f() {
+	test_mkdir $DIR/$tdir
+
+	local max=100000
+	local ulimit_old=$(ulimit -n)
+	local spare=20 # number of spare fd's for scripts/libraries, etc.
+	local mdt=$(lfs getstripe -M $DIR/$tdir)
+	local numfree=$(lfs df -i $DIR/$tdir | awk '/MDT:'$mdt'/ { print $4 }')
+
+	echo "MDT$mdt numfree=$numfree, max=$max"
+	[[ $numfree -gt $max ]] && numfree=$max || numfree=$((numfree * 7 / 8))
+	if [ $((numfree + spare)) -gt $ulimit_old ]; then
+		while ! ulimit -n $((numfree + spare)); do
+			numfree=$((numfree * 3 / 4))
+		done
+		echo "changed ulimit from $ulimit_old to $((numfree + spare))"
+	else
+		echo "left ulimit at $ulimit_old"
+	fi
+
+	createmany -o -k -t 120 $DIR/$tdir/f $numfree || {
+		unlinkmany $DIR/$tdir/f $numfree
+		error "create+open $numfree files in $DIR/$tdir failed"
+	}
+	ulimit -n $ulimit_old
+
+	# if createmany exits at 120s there will be fewer than $numfree files
+	unlinkmany $DIR/$tdir/f $numfree || true
+}
+run_test 51f "check many open files limit"
+
 test_52a() {
 	[ -f $DIR/$tdir/foo ] && chattr -a $DIR/$tdir/foo
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/foo
 	chattr +a $DIR/$tdir/foo || error "chattr +a failed"
 	echo bar >> $DIR/$tdir/foo || error "append bar failed"
@@ -4268,7 +4310,7 @@ run_test 52a "append-only flag test (should return errors)"
 
 test_52b() {
 	[ -f $DIR/$tdir/foo ] && chattr -i $DIR/$tdir/foo
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/foo
 	chattr +i $DIR/$tdir/foo || error "chattr +i failed"
 	cat test > $DIR/$tdir/foo && error "cat test worked"
@@ -4355,6 +4397,8 @@ test_53() {
 run_test 53 "verify that MDS and OSTs agree on pre-creation ===="
 
 test_54a() {
+	perl -MSocket -e ';' || { skip "no Socket perl module installed" && return; }
+
 	$SOCKETSERVER $DIR/socket ||
 		error "$SOCKETSERVER $DIR/socket failed: $?"
 	$SOCKETCLIENT $DIR/socket ||
@@ -4409,7 +4453,7 @@ test_54c() {
 	losetup $loopdev $DIR/$tfile ||
 		error "can't set up $loopdev for $DIR/$tfile"
 	mkfs.ext2 $loopdev || error "mke2fs on $loopdev"
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	mount -t ext2 $loopdev $DIR/$tdir ||
 		error "error mounting $loopdev on $DIR/$tdir"
 	dd if=/dev/zero of=$DIR/$tdir/tmp bs=$(get_page_size client) count=30 ||
@@ -4533,11 +4577,35 @@ test_56b() {
 }
 run_test 56b "check $LFS getdirstripe"
 
-NUMFILES=3
-NUMDIRS=3
-setup_56() {
-	local LOCAL_NUMFILES="$1"
-	local LOCAL_NUMDIRS="$2"
+test_56c() {
+	local ost_idx=0
+	local ost_name=$(ostname_from_index $ost_idx)
+
+	local old_status=$(ost_dev_status $ost_idx)
+	[[ -z "$old_status" ]] ||
+		{ skip_env "OST $ost_name is in $old_status status"; return 0; }
+
+	do_facet ost1 $LCTL set_param -n obdfilter.$ost_name.degraded=1
+	sleep_maxage
+
+	local new_status=$(ost_dev_status $ost_idx)
+	[[ "$new_status" = "D" ]] ||
+		error "OST $ost_name is in status of '$new_status', not 'D'"
+
+	do_facet ost1 $LCTL set_param -n obdfilter.$ost_name.degraded=0
+	sleep_maxage
+
+	new_status=$(ost_dev_status $ost_idx)
+	[[ -z "$new_status" ]] ||
+		error "OST $ost_name is in status of '$new_status', not ''"
+}
+run_test 56c "check 'lfs df' showing device status"
+
+NUMFILES=3
+NUMDIRS=3
+setup_56() {
+	local LOCAL_NUMFILES="$1"
+	local LOCAL_NUMDIRS="$2"
 	local MKDIR_PARAMS="$3"
 	local DIR_STRIPE_PARAMS="$4"
 
@@ -4606,17 +4674,17 @@ test_56h() {
                               "found $NUMS, expected $EXPECTED"
         done
 }
-run_test 56h "check lfs find ! -name ============================="
+run_test 56h "check lfs find ! -name"
 
 test_56i() {
-       tdir=${tdir}i
-       test_mkdir -p $DIR/$tdir
-       UUID=$(ostuuid_from_index 0 $DIR/$tdir)
-       CMD="$LFIND -ost $UUID $DIR/$tdir"
-       OUT=$($CMD)
-       [ -z "$OUT" ] || error "\"$CMD\" returned directory '$OUT'"
+	tdir=${tdir}i
+	test_mkdir $DIR/$tdir
+	UUID=$(ostuuid_from_index 0 $DIR/$tdir)
+	CMD="$LFIND -ost $UUID $DIR/$tdir"
+	OUT=$($CMD)
+	[ -z "$OUT" ] || error "'$CMD' returned directory '$OUT'"
 }
-run_test 56i "check 'lfs find -ost UUID' skips directories ======="
+run_test 56i "check 'lfs find -ost UUID' skips directories"
 
 test_56j() {
 	TDIR=$DIR/${tdir}g
@@ -4792,8 +4860,22 @@ run_test 56r "check lfs find -size works =========================="
 
 test_56s() { # LU-611
 	TDIR=$DIR/${tdir}s
-	setup_56 $NUMFILES $NUMDIRS "-c $OSTCOUNT"
 
+	#LU-9369
+	setup_56 0 $NUMDIRS
+	for i in $(seq 1 $NUMDIRS); do
+		$SETSTRIPE -c $((OSTCOUNT + 1)) $TDIR/dir$i/$tfile
+	done
+	EXPECTED=$NUMDIRS
+	CMD="$LFIND -c $OSTCOUNT $TDIR"
+	NUMS=$($CMD | wc -l)
+	[ $NUMS -eq $EXPECTED ] || {
+		$GETSTRIPE -R $TDIR
+		error "\"$CMD\" wrong: found $NUMS, expected $EXPECTED"
+	}
+	rm -rf $TDIR
+
+	setup_56 $NUMFILES $NUMDIRS "-c $OSTCOUNT"
 	if [[ $OSTCOUNT -gt 1 ]]; then
 		$SETSTRIPE -c 1 $TDIR/$tfile.{0,1,2,3}
 		ONESTRIPE=4
@@ -4846,6 +4928,21 @@ run_test 56s "check lfs find -stripe-count works"
 
 test_56t() { # LU-611
 	TDIR=$DIR/${tdir}t
+
+	#LU-9369
+	setup_56 0 $NUMDIRS
+	for i in $(seq 1 $NUMDIRS); do
+		$SETSTRIPE -S 4M $TDIR/dir$i/$tfile
+	done
+	EXPECTED=$NUMDIRS
+	CMD="$LFIND -S 4M $TDIR"
+	NUMS=$($CMD | wc -l)
+	[ $NUMS -eq $EXPECTED ] || {
+		$GETSTRIPE -R $TDIR
+		error "\"$CMD\" wrong: found $NUMS, expected $EXPECTED"
+	}
+	rm -rf $TDIR
+
 	setup_56 $NUMFILES $NUMDIRS "--stripe-size 512k"
 
 	$SETSTRIPE -S 256k $TDIR/$tfile.{0,1,2,3}
@@ -4955,59 +5052,63 @@ test_56v() {
 run_test 56v "check 'lfs find -mdt match with lfs getstripe -M' ======="
 
 test_56w() {
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "$OSTCOUNT < 2 OSTs -- skipping" &&
-		return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	TDIR=$DIR/${tdir}w
 
-    rm -rf $TDIR || error "remove $TDIR failed"
-    setup_56 $NUMFILES $NUMDIRS "-c $OSTCOUNT" "-c1"
-
-    local stripe_size
-    stripe_size=$($GETSTRIPE -S -d $TDIR) ||
-        error "$GETSTRIPE -S -d $TDIR failed"
-    stripe_size=${stripe_size%% *}
-
-    local file_size=$((stripe_size * OSTCOUNT))
-    local file_num=$((NUMDIRS * NUMFILES + NUMFILES))
-    local required_space=$((file_num * file_size))
-
-    local free_space=$($LCTL get_param -n lov.$FSNAME-clilov-*.kbytesavail |
-			head -n1)
-    [[ $free_space -le $((required_space / 1024)) ]] &&
-        skip_env "need at least $required_space bytes free space," \
-                 "have $free_space kbytes" && return
-
-    local dd_bs=65536
-    local dd_count=$((file_size / dd_bs))
-
-    # write data into the files
-    local i
-    local j
-    local file
-    for i in $(seq 1 $NUMFILES); do
-        file=$TDIR/file$i
-        yes | dd bs=$dd_bs count=$dd_count of=$file >/dev/null 2>&1 ||
-            error "write data into $file failed"
-    done
-    for i in $(seq 1 $NUMDIRS); do
-        for j in $(seq 1 $NUMFILES); do
-            file=$TDIR/dir$i/file$j
-            yes | dd bs=$dd_bs count=$dd_count of=$file \
-                >/dev/null 2>&1 ||
-                error "write data into $file failed"
-        done
-    done
+	rm -rf $TDIR || error "remove $TDIR failed"
+	setup_56 $NUMFILES $NUMDIRS "-c $OSTCOUNT" "-c1"
 
-    local expected=-1
-    [[ $OSTCOUNT -gt 1 ]] && expected=$((OSTCOUNT - 1))
+	local stripe_size
+	stripe_size=$($GETSTRIPE -S -d $TDIR) ||
+		error "$GETSTRIPE -S -d $TDIR failed"
+	stripe_size=${stripe_size%% *}
 
-    # lfs_migrate file
-    local cmd="$LFS_MIGRATE -y -c $expected $TDIR/file1"
-    echo "$cmd"
-    eval $cmd || error "$cmd failed"
+	local file_size=$((stripe_size * OSTCOUNT))
+	local file_num=$((NUMDIRS * NUMFILES + NUMFILES))
+	local required_space=$((file_num * file_size))
+
+	local free_space=$($LCTL get_param -n lov.$FSNAME-clilov-*.kbytesavail |
+			   head -n1)
+	[[ $free_space -le $((required_space / 1024)) ]] &&
+		skip_env "need $required_space bytes, have $free_space KB" &&
+		return
+
+	local dd_bs=65536
+	local dd_count=$((file_size / dd_bs))
+
+	# write data into the files
+	local i
+	local j
+	local file
+	for i in $(seq 1 $NUMFILES); do
+		file=$TDIR/file$i
+		yes | dd bs=$dd_bs count=$dd_count of=$file &>/dev/null ||
+			error "write data into $file failed"
+	done
+	for i in $(seq 1 $NUMDIRS); do
+		for j in $(seq 1 $NUMFILES); do
+			file=$TDIR/dir$i/file$j
+			yes|dd bs=$dd_bs count=$dd_count of=$file &>/dev/null ||
+				error "write data into $file failed"
+		done
+	done
+
+	# $LFS_MIGRATE will fail if hard link migration is unsupported
+	if [[ $(lustre_version_code mds1) -gt $(version_code 2.5.55) ]]; then
+		createmany -l$TDIR/dir1/file1 $TDIR/dir1/link 200 ||
+			error "creating links to $TDIR/dir1/file1 failed"
+	fi
 
-    check_stripe_count $TDIR/file1 $expected
+	local expected=-1
+	[[ $OSTCOUNT -gt 1 ]] && expected=$((OSTCOUNT - 1))
+
+	# lfs_migrate file
+	local cmd="$LFS_MIGRATE -y -c $expected $TDIR/file1"
+	echo "$cmd"
+	eval $cmd || error "$cmd failed"
+
+	check_stripe_count $TDIR/file1 $expected
 
 	if [ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.6.90) ];
 	then
@@ -5060,19 +5161,17 @@ run_test 56w "check lfs_migrate -c stripe_count works"
 
 test_56x() {
 	check_swap_layouts_support && return 0
-	[[ $OSTCOUNT -lt 2 ]] &&
-		skip_env "need 2 OST, skipping test" && return
-
-	local dir0=$DIR/$tdir/$testnum
-	test_mkdir -p $dir0 || error "creating dir $dir0"
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
+	local dir0=$DIR/$tdir
 	local ref1=/etc/passwd
 	local file1=$dir0/file1
 
-	$SETSTRIPE -c 2 $file1
+	test_mkdir $dir0 || error "creating dir $dir0"
+	$LFS setstripe -c 2 $file1
 	cp $ref1 $file1
 	$LFS migrate -c 1 $file1 || error "migrate failed rc = $?"
-	stripe=$($GETSTRIPE -c $file1)
+	stripe=$($LFS getstripe -c $file1)
 	[[ $stripe == 1 ]] || error "stripe of $file1 is $stripe != 1"
 	cmp $file1 $ref1 || error "content mismatch $file1 differs from $ref1"
 
@@ -5083,19 +5182,18 @@ run_test 56x "lfs migration support"
 
 test_56xa() {
 	check_swap_layouts_support && return 0
-	[[ $OSTCOUNT -lt 2 ]] &&
-		skip_env "need 2 OST, skipping test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
 	local dir0=$DIR/$tdir/$testnum
-	test_mkdir -p $dir0 || error "creating dir $dir0"
+	test_mkdir -p $dir0
 
 	local ref1=/etc/passwd
 	local file1=$dir0/file1
 
-	$SETSTRIPE -c 2 $file1
+	$LFS setstripe -c 2 $file1
 	cp $ref1 $file1
 	$LFS migrate --block -c 1 $file1 || error "migrate failed rc = $?"
-	local stripe=$($GETSTRIPE -c $file1)
+	local stripe=$($LFS getstripe -c $file1)
 	[[ $stripe == 1 ]] || error "stripe of $file1 is $stripe != 1"
 	cmp $file1 $ref1 || error "content mismatch $file1 differs from $ref1"
 
@@ -5104,6 +5202,110 @@ test_56xa() {
 }
 run_test 56xa "lfs migration --block support"
 
+check_migrate_links() {
+	local dir="$1"
+	local file1="$dir/file1"
+	local begin="$2"
+	local count="$3"
+	local total_count=$(($begin + $count - 1))
+	local symlink_count=10
+	local uniq_count=10
+
+	if [ ! -f "$file1" ]; then
+		echo -n "creating initial file..."
+		$LFS setstripe -c 1 -S "512k" "$file1" ||
+			error "cannot setstripe initial file"
+		echo "done"
+
+		echo -n "creating symlinks..."
+		for s in $(seq 1 $symlink_count); do
+			ln -s "$file1" "$dir/slink$s" ||
+				error "cannot create symlinks"
+		done
+		echo "done"
+
+		echo -n "creating nonlinked files..."
+		createmany -o "$dir/uniq" 1 10 &> /dev/null ||
+			error "cannot create nonlinked files"
+		echo "done"
+	fi
+
+	# create hard links
+	if [ ! -f "$dir/file$total_count" ]; then
+		echo -n "creating hard links $begin:$total_count..."
+		createmany -l"$file1" "$dir/file" "$begin" "$count" &>	\
+			/dev/null || error "cannot create hard links"
+		echo "done"
+	fi
+
+	echo -n "checking number of hard links listed in xattrs..."
+	local fid=$($LFS getstripe -F "$file1")
+	local paths=($($LFS fid2path "$MOUNT" "$fid" 2> /dev/null))
+
+	echo "${#paths[*]}"
+	if [ ${#paths[*]} -lt $total_count -a "$begin" -eq 2  ]; then
+			echo "hard link list has unexpected size, skipping test"
+			return 0
+	fi
+	if [ ${#paths[*]} -ge $total_count -a "$begin" -ne 2  ]; then
+			error "link names should exceed xattrs size"
+	fi
+
+	echo -n "migrating files..."
+	local migrate_out=$($LFS_MIGRATE -y -S '1m' $dir)
+	local rc=$?
+	[ $rc -eq 0 ] || error "migrate failed rc = $rc"
+	echo "done"
+
+	# make sure all links have been properly migrated
+	echo -n "verifying files..."
+	fid=$($LFS getstripe -F "$file1") ||
+		error "cannot get fid for file $file1"
+	for i in $(seq 2 $total_count); do
+		local fid2=$($LFS getstripe -F $dir/file$i)
+		[ "$fid2" == "$fid" ] ||
+			error "migrated hard link has mismatched FID"
+	done
+
+	# make sure hard links were properly detected, and migration was
+	# performed only once for the entire link set; nonlinked files should
+	# also be migrated
+	local actual=$(grep -c 'done migrate' <<< "$migrate_out")
+	local expected=$(($uniq_count + 1))
+	[ "$actual" -eq  "$expected" ] ||
+		error "hard links individually migrated ($actual != $expected)"
+
+	# make sure the correct number of hard links are present
+	local hardlinks=$(stat -c '%h' "$file1")
+	[ $hardlinks -eq $total_count ] ||
+		error "num hard links $hardlinks != $total_count"
+	echo "done"
+
+	return 0
+}
+
+test_56xb() {
+	local dir0="$DIR/$tdir"
+
+	test_mkdir "$dir0" || error "cannot create dir $dir0"
+
+	echo "testing lfs migrate mode when all links fit within xattrs"
+	LFS_MIGRATE_RSYNC=false check_migrate_links "$dir0" 2 99
+
+	echo "testing rsync mode when all links fit within xattrs"
+	LFS_MIGRATE_RSYNC=true check_migrate_links "$dir0" 2 99
+
+	echo "testing lfs migrate mode when all links do not fit within xattrs"
+	LFS_MIGRATE_RSYNC=false check_migrate_links "$dir0" 101 100
+
+	echo "testing rsync mode when all links do not fit within xattrs"
+	LFS_MIGRATE_RSYNC=true check_migrate_links "$dir0" 101 100
+
+	# clean up
+	rm -rf $dir0
+}
+run_test 56xb "lfs migration hard link support"
+
 test_56y() {
 	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.4.53) ] &&
 		skip "No HSM $(lustre_build_version $SINGLEMDS) MDS < 2.4.53" &&
@@ -5111,7 +5313,7 @@ test_56y() {
 
 	local res=""
 	local dir0=$DIR/$tdir/$testnum
-	test_mkdir -p $dir0 || error "creating dir $dir0"
+	test_mkdir -p $dir0
 	local f1=$dir0/file1
 	local f2=$dir0/file2
 
@@ -5172,11 +5374,73 @@ test_56aa() { # LU-5937
 }
 run_test 56aa "lfs find --size under striped dir"
 
+test_56ba() {
+	# Create composite files with one component
+	TDIR=$DIR/$tdir/1Mfiles
+	setup_56 5 1 "--component-end 1M"
+	# Create composite files with three components
+	TDIR=$DIR/$tdir/2Mfiles
+	setup_56 5 2 "-E 2M -E 4M -E 6M"
+	TDIR=$DIR/$tdir
+	# Create non-composite files
+	createmany -o $TDIR/${tfile}- 10
+
+	local nfiles=$($LFIND --component-end 1M --type f $TDIR | wc -l)
+	[[ $nfiles == 10 ]] ||
+		error "lfs find -E 1M found $nfiles != 10 files"
+
+	nfiles=$($LFIND ! -E 1M --type f $TDIR | wc -l)
+	[[ $nfiles == 25 ]] ||
+		error "lfs find ! -E 1M found $nfiles != 25 files"
+
+	# All files have a component that starts at 0
+	local nfiles=$($LFIND --component-start 0 --type f $TDIR | wc -l)
+	[[ $nfiles == 35 ]] ||
+		error "lfs find --component-start 0 found $nfiles != 35 files"
+
+	nfiles=$($LFIND --component-start 2M --type f $TDIR | wc -l)
+	[[ $nfiles == 15 ]] ||
+		error "$LFIND --component-start 2M found $nfiles != 15 files"
+
+	# All files created here have a componenet that does not starts at 2M
+	nfiles=$($LFIND ! --component-start 2M --type f $TDIR | wc -l)
+	[[ $nfiles == 35 ]] ||
+		error "$LFIND ! --component-start 2M found $nfiles != 35 files"
+
+	# Find files with a specified number of components
+	local nfiles=$($LFIND --component-count 3 --type f $TDIR | wc -l)
+	[[ $nfiles == 15 ]] ||
+		error "lfs find --component-count 3 found $nfiles != 15 files"
+
+	# Remember non-composite files have a component count of zero
+	local nfiles=$($LFIND --component-count 0 --type f $TDIR | wc -l)
+	[[ $nfiles == 10 ]] ||
+		error "lfs find --component-count 0 found $nfiles != 10 files"
+
+	nfiles=$($LFIND ! --component-count 3 --type f $TDIR | wc -l)
+	[[ $nfiles == 20 ]] ||
+		error "$LFIND ! --component-count 3 found $nfiles != 20 files"
+
+	# All files have a flag called "init"
+	local nfiles=$($LFIND --component-flags init --type f $TDIR | wc -l)
+	[[ $nfiles == 35 ]] ||
+		error "$LFIND --component-flags init found $nfiles != 35 files"
+
+	# Multi-component files will have a component not initialized
+	local nfiles=$($LFIND ! --component-flags init --type f $TDIR | wc -l)
+	[[ $nfiles == 15 ]] ||
+		error "$LFIND !--component-flags init found $nfiles != 15 files"
+
+	rm -rf $TDIR
+
+}
+run_test 56ba "test lfs find --component-end, -start, -count, and -flags"
+
 test_57a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	# note test will not do anything if MDS is not local
 	if [ "$(facet_fstype $SINGLEMDS)" != ldiskfs ]; then
-		skip "Only applicable to ldiskfs-based MDTs"
+		skip "ldiskfs only test"
 		return
 	fi
 
@@ -5197,7 +5461,7 @@ run_test 57a "verify MDS filesystem created with large inodes =="
 test_57b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	if [ "$(facet_fstype $SINGLEMDS)" != ldiskfs ]; then
-		skip "Only applicable to ldiskfs-based MDTs"
+		skip "ldiskfs only test"
 		return
 	fi
 
@@ -5209,7 +5473,7 @@ test_57b() {
 	local FILEN=$dir/f$FILECOUNT
 
 	rm -rf $dir || error "removing $dir"
-	test_mkdir -p -c1 $dir || error "creating $dir"
+	test_mkdir -c1 $dir
 	local mdtidx=$($LFS getstripe -M $dir)
 	local mdtname=MDT$(printf %04x $mdtidx)
 	local facet=mds$((mdtidx + 1))
@@ -5285,7 +5549,7 @@ test_60a() {
 
 	log "$TEST60_HEAD - from kernel mode"
 	do_facet mgs "$LCTL set_param debug=warning; $LCTL dk > /dev/null"
-	do_facet mgs sh run-llog.sh
+	do_facet mgs "sh run-llog.sh" || error "run-llog.sh failed"
 	do_facet mgs $LCTL dk > $TMP/$tfile
 
 	# LU-6388: test llog_reader
@@ -5362,7 +5626,23 @@ test_60a() {
 	start mgs $(mgsdevname) $MGS_MOUNT_OPTS || error "start mgs failed"
 	$pass || error "test failed, see FAILED test_60a messages for specifics"
 }
-run_test 60a "llog_test run from kernel module and test llog_reader =========="
+run_test 60a "llog_test run from kernel module and test llog_reader"
+
+test_60aa() {
+	# test old logid format
+	if [ $(lustre_version_code mgs) -le $(version_code 3.1.53) ]; then
+		do_facet mgs $LCTL dl | grep MGS
+		do_facet mgs "$LCTL --device %MGS llog_print \\\\\\\$$FSNAME-client" ||
+			error "old llog_print failed"
+	fi
+
+	# test new logid format
+	if [ $(lustre_version_code mgs) -ge $(version_code 2.9.53) ]; then
+		do_facet mgs "$LCTL --device MGS llog_print $FSNAME-client" ||
+			error "new llog_print failed"
+	fi
+}
+run_test 60aa "llog_print works with FIDs and simple names"
 
 test_60b() { # bug 6411
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
@@ -5501,25 +5781,25 @@ test_64b () {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	sh oos.sh $MOUNT || error "oos.sh failed: $?"
 }
-run_test 64b "check out-of-space detection on client ==========="
+run_test 64b "check out-of-space detection on client"
 
 test_64c() {
 	$LCTL set_param osc.*OST0000-osc-[^mM]*.cur_grant_bytes=0
 }
-run_test 64c "verify grant shrink ========================------"
+run_test 64c "verify grant shrink"
 
 # bug 1414 - set/get directories' stripe info
 test_65a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	touch $DIR/$tdir/f1
 	$LVERIFY $DIR/$tdir $DIR/$tdir/f1 || error "lverify failed"
 }
-run_test 65a "directory with no stripe info ===================="
+run_test 65a "directory with no stripe info"
 
 test_65b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local STRIPESIZE=$($GETSTRIPE -S $DIR/$tdir)
 
 	$SETSTRIPE -S $((STRIPESIZE * 2)) -i 0 -c 1 $DIR/$tdir ||
@@ -5531,21 +5811,20 @@ run_test 65b "directory setstripe -S stripe_size*2 -i 0 -c 1"
 
 test_65c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	if [[ $OSTCOUNT -gt 1 ]]; then
-		test_mkdir -p $DIR/$tdir
-		local STRIPESIZE=$($GETSTRIPE -S $DIR/$tdir)
+	[ $OSTCOUNT -lt 2 ] && skip "need at least 2 OSTs" && return
+	test_mkdir $DIR/$tdir
+	local stripesize=$($GETSTRIPE -S $DIR/$tdir)
 
-		$SETSTRIPE -S $(($STRIPESIZE * 4)) -i 1 \
-			-c $(($OSTCOUNT - 1)) $DIR/$tdir || error "setstripe"
-		touch $DIR/$tdir/f3
-		$LVERIFY $DIR/$tdir $DIR/$tdir/f3 || error "lverify failed"
-	fi
+	$LFS setstripe -S $((stripesize * 4)) -i 1 \
+		-c $((OSTCOUNT - 1)) $DIR/$tdir || error "setstripe"
+	touch $DIR/$tdir/f3
+	$LVERIFY $DIR/$tdir $DIR/$tdir/f3 || error "lverify failed"
 }
 run_test 65c "directory setstripe -S stripe_size*4 -i 1 -c $((OSTCOUNT-1))"
 
 test_65d() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local STRIPECOUNT=$($GETSTRIPE -c $DIR/$tdir)
 	local STRIPESIZE=$($GETSTRIPE -S $DIR/$tdir)
 
@@ -5566,7 +5845,7 @@ run_test 65d "directory setstripe -S stripe_size -c stripe_count"
 
 test_65e() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 
 	$SETSTRIPE $DIR/$tdir || error "setstripe"
         $GETSTRIPE -v $DIR/$tdir | grep "Default" ||
@@ -5574,38 +5853,38 @@ test_65e() {
 	touch $DIR/$tdir/f6
 	$LVERIFY $DIR/$tdir $DIR/$tdir/f6 || error "lverify failed"
 }
-run_test 65e "directory setstripe defaults ======================="
+run_test 65e "directory setstripe defaults"
 
 test_65f() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/${tdir}f
+	test_mkdir $DIR/${tdir}f
 	$RUNAS $SETSTRIPE $DIR/${tdir}f && error "setstripe succeeded" || true
 }
 run_test 65f "dir setstripe permission (should return error) ==="
 
 test_65g() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local STRIPESIZE=$($GETSTRIPE -S $DIR/$tdir)
 
-        $SETSTRIPE -S $((STRIPESIZE * 2)) -i 0 -c 1 $DIR/$tdir ||
-							error "setstripe"
-        $SETSTRIPE -d $DIR/$tdir || error "setstripe"
-        $GETSTRIPE -v $DIR/$tdir | grep "Default" ||
+	$LFS setstripe -S $((STRIPESIZE * 2)) -i 0 -c 1 $DIR/$tdir ||
+		error "setstripe -S failed"
+	$LFS setstripe -d $DIR/$tdir || error "setstripe -d failed"
+	$LFS getstripe -v $DIR/$tdir | grep "Default" ||
 		error "delete default stripe failed"
 }
-run_test 65g "directory setstripe -d ==========================="
+run_test 65g "directory setstripe -d"
 
 test_65h() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local STRIPESIZE=$($GETSTRIPE -S $DIR/$tdir)
 
-        $SETSTRIPE -S $((STRIPESIZE * 2)) -i 0 -c 1 $DIR/$tdir ||
-							error "setstripe"
-        test_mkdir -p $DIR/$tdir/dd1
-        [ $($GETSTRIPE -c $DIR/$tdir) == $($GETSTRIPE -c $DIR/$tdir/dd1) ] ||
-                error "stripe info inherit failed"
+	$LFS setstripe -S $((STRIPESIZE * 2)) -i 0 -c 1 $DIR/$tdir ||
+		error "setstripe -S failed"
+	test_mkdir $DIR/$tdir/dd1
+	[ $($LFS getstripe -c $DIR/$tdir) = $($GETSTRIPE -c $DIR/$tdir/dd1) ] ||
+		error "stripe info inherit failed"
 }
 run_test 65h "directory stripe info inherit ===================="
 
@@ -5647,7 +5926,7 @@ run_test 65j "set default striping on root directory (bug 6367)="
 
 test_65k() { # bug11679
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "too few OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 
 	local disable_precreate=true
@@ -5732,23 +6011,6 @@ test_66() {
 }
 run_test 66 "update inode blocks count on client ==============="
 
-LLOOP=
-LLITELOOPLOAD=
-cleanup_68() {
-	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	trap 0
-	if [ ! -z "$LLOOP" ]; then
-		if swapon -s | grep -q $LLOOP; then
-			swapoff $LLOOP || error "swapoff failed"
-		fi
-
-		$LCTL blockdev_detach $LLOOP || error "detach failed"
-		rm -f $LLOOP
-		unset LLOOP
-	fi
-	rm -f $DIR/f68*
-}
-
 meminfo() {
 	awk '($1 == "'$1':") { print $2 }' /proc/meminfo
 }
@@ -5787,7 +6049,7 @@ test_69() {
 run_test 69 "verify oa2dentry return -ENOENT doesn't LBUG ======"
 
 test_71() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$LFS setdirstripe -D -c$MDSCOUNT $DIR/$tdir
 	sh rundbench -C -D $DIR/$tdir 2 || error "dbench failed!"
 }
@@ -5923,21 +6185,9 @@ num_inodes() {
 	awk '/lustre_inode_cache/ {print $2; exit}' /proc/slabinfo
 }
 
-get_inode_slab_tunables() {
-	awk '/lustre_inode_cache/ {print $9," ",$10," ",$11; exit}' /proc/slabinfo
-}
-
-set_inode_slab_tunables() {
-	echo "lustre_inode_cache $1" > /proc/slabinfo
-}
-
 test_76() { # Now for bug 20433, added originally in bug 1443
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	local SLAB_SETTINGS=$(get_inode_slab_tunables)
 	local CPUS=$(getconf _NPROCESSORS_ONLN 2>/dev/null)
-	# we cannot set limit below 1 which means 1 inode in each
-	# per-cpu cache is still allowed
-	set_inode_slab_tunables "1 1 0"
 	cancel_lru_locks osc
 	BEFORE_INODES=$(num_inodes)
 	echo "before inodes: $BEFORE_INODES"
@@ -5960,7 +6210,6 @@ test_76() { # Now for bug 20433, added originally in bug 1443
 			error "inode slab grew from $BEFORE_INODES to $AFTER_INODES"
 		fi
 	done
-	set_inode_slab_tunables "$SLAB_SETTINGS"
 }
 run_test 76 "confirm clients recycle inodes properly ===="
 
@@ -6034,6 +6283,96 @@ test_77b() { # bug 10889
 }
 run_test 77b "checksum error on client write, read"
 
+cleanup_77c() {
+	trap 0
+	set_checksums 0
+	$LCTL set_param osc.*osc-[^mM]*.checksum_dump=0
+	$check_ost &&
+		do_facet ost1 $LCTL set_param obdfilter.*-OST*.checksum_dump=0
+	[ -n $osc_file_prefix ] && rm -f ${osc_file_prefix}*
+	$check_ost && [ -n $ost_file_prefix ] &&
+		do_facet ost1 rm -f ${ost_file_prefix}\*
+}
+
+test_77c() {
+	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
+	$GSS && skip "could not run with gss" && return
+
+	local bad1
+	local osc_file_prefix
+	local osc_file
+	local check_ost=false
+	local ost_file_prefix
+	local ost_file
+	local orig_cksum
+	local dump_cksum
+	local fid
+
+	# ensure corruption will occur on first OSS/OST
+	$LFS setstripe -i 0 $DIR/$tfile
+
+	[ ! -f $F77_TMP ] && setup_f77
+	dd if=$F77_TMP of=$DIR/$tfile bs=1M count=$F77SZ conv=sync ||
+		error "dd write error: $?"
+	fid=$($LFS path2fid $DIR/$tfile)
+
+	if [ $(lustre_version_code ost1) -ge $(version_code 2.9.57) ]
+	then
+		check_ost=true
+		ost_file_prefix=$(do_facet ost1 $LCTL get_param -n debug_path)
+		ost_file_prefix=${ost_file_prefix}-checksum_dump-ost-\\${fid}
+	else
+		echo "OSS do not support bulk pages dump upon error"
+	fi
+
+	osc_file_prefix=$($LCTL get_param -n debug_path)
+	osc_file_prefix=${osc_file_prefix}-checksum_dump-osc-\\${fid}
+
+	trap cleanup_77c EXIT
+
+	set_checksums 1
+	# enable bulk pages dump upon error on Client
+	$LCTL set_param osc.*osc-[^mM]*.checksum_dump=1
+	# enable bulk pages dump upon error on OSS
+	$check_ost &&
+		do_facet ost1 $LCTL set_param obdfilter.*-OST*.checksum_dump=1
+
+	# flush Client cache to allow next read to reach OSS
+	cancel_lru_locks osc
+
+	#define OBD_FAIL_OSC_CHECKSUM_RECEIVE       0x408
+	$LCTL set_param fail_loc=0x80000408
+	dd if=$DIR/$tfile of=/dev/null bs=1M || error "dd read error: $?"
+	$LCTL set_param fail_loc=0
+
+	rm -f $DIR/$tfile
+
+	# check cksum dump on Client
+	osc_file=$(ls ${osc_file_prefix}*)
+	[ -n "$osc_file" ] || error "no checksum dump file on Client"
+	# OBD_FAIL_OSC_CHECKSUM_RECEIVE corrupts with "bad1" at start of file
+	bad1=$(dd if=$osc_file bs=1 count=4 2>/dev/null) || error "dd error: $?"
+	[ $bad1 == "bad1" ] || error "unexpected corrupt pattern"
+	orig_cksum=$(dd if=$F77_TMP bs=1 skip=4 count=1048572 2>/dev/null |
+		     cksum)
+	dump_cksum=$(dd if=$osc_file bs=1 skip=4 2>/dev/null | cksum)
+	[[ "$orig_cksum" == "$dump_cksum" ]] ||
+		error "dump content does not match on Client"
+
+	$check_ost || skip "No need to check cksum dump on OSS"
+
+	# check cksum dump on OSS
+	ost_file=$(do_facet ost1 ls ${ost_file_prefix}\*)
+	[ -n "$ost_file" ] || error "no checksum dump file on OSS"
+	orig_cksum=$(dd if=$F77_TMP bs=1048576 count=1 2>/dev/null | cksum)
+	dump_cksum=$(do_facet ost1 dd if=$ost_file 2>/dev/null \| cksum)
+	[[ "$orig_cksum" == "$dump_cksum" ]] ||
+		error "dump content does not match on OSS"
+
+	cleanup_77c
+}
+run_test 77c "checksum error on client read with debug"
+
 test_77d() { # bug 10889
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	$GSS && skip "could not run with gss" && return
@@ -6100,22 +6439,6 @@ test_77g() { # bug 10889
 }
 run_test 77g "checksum error on OST write, read"
 
-test_77i() { # bug 13805
-	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	$GSS && skip "could not run with gss" && return
-	#define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
-	lctl set_param fail_loc=0x40b
-	remount_client $MOUNT
-	lctl set_param fail_loc=0
-	for VALUE in `lctl get_param osc.*osc-[^mM]*.checksum_type`; do
-		PARAM=`echo ${VALUE[0]} | cut -d "=" -f1`
-		algo=`lctl get_param -n $PARAM | sed 's/.*\[\(.*\)\].*/\1/g'`
-		[ "$algo" = "adler" ] || error "algo set to $algo instead of adler"
-	done
-	remount_client $MOUNT
-}
-run_test 77i "client not supporting OSD_CONNECT_CKSUM"
-
 test_77j() { # bug 13805
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	$GSS && skip "could not run with gss" && return
@@ -6123,10 +6446,15 @@ test_77j() { # bug 13805
 	lctl set_param fail_loc=0x40c
 	remount_client $MOUNT
 	lctl set_param fail_loc=0
-	sleep 2 # wait async osc connect to finish
-	for VALUE in `lctl get_param osc.*osc-[^mM]*.checksum_type`; do
-                PARAM=`echo ${VALUE[0]} | cut -d "=" -f1`
-		algo=`lctl get_param -n $PARAM | sed 's/.*\[\(.*\)\].*/\1/g'`
+	# wait async osc connect to finish and reflect updated state value
+	local i
+	for (( i=0; i < OSTCOUNT; i++ )) ; do
+		wait_osc_import_state client ost$((i+1)) FULL
+	done
+
+	for VALUE in $(lctl get_param osc.*osc-[^mM]*.checksum_type); do
+		PARAM=$(echo ${VALUE[0]} | cut -d "=" -f1)
+		algo=$(lctl get_param -n $PARAM | sed 's/.*\[\(.*\)\].*/\1/g')
 		[ "$algo" = "adler" ] || error "algo set to $algo instead of adler"
 	done
 	remount_client $MOUNT
@@ -6304,80 +6632,59 @@ test_82() { # LU-1031
 	wait $MULTIPID1
 	wait $MULTIPID2
 }
-run_test 82 "Basic grouplock test ==============================="
+run_test 82 "Basic grouplock test"
+
+test_83() {
+	local sfile="/boot/System.map-$(uname -r)"
+	# define OBD_FAIL_LLITE_PTASK_IO_FAIL 0x140d
+	$LCTL set_param fail_loc=0x140d
+	cp $sfile $DIR/$tfile || error "write failed"
+	diff -c $sfile $DIR/$tfile || error "files are different"
+	$LCTL set_param fail_loc=0
+	rm -f $DIR/$tfile
+}
+run_test 83 "Short write in ptask ==============================="
 
-test_99a() {
+test_99() {
 	[ -z "$(which cvs 2>/dev/null)" ] && skip_env "could not find cvs" &&
 		return
-	test_mkdir -p $DIR/d99cvsroot
-	chown $RUNAS_ID $DIR/d99cvsroot
-	local oldPWD=$PWD	# bug 13584, use $TMP as working dir
-	cd $TMP
+	test_mkdir $DIR/$tdir.cvsroot
+	chown $RUNAS_ID $DIR/$tdir.cvsroot
 
-	$RUNAS cvs -d $DIR/d99cvsroot init || error "cvs init failed"
-	cd $oldPWD
-}
-run_test 99a "cvs init ========================================="
+	cd $TMP
+	$RUNAS cvs -d $DIR/$tdir.cvsroot init || error "cvs init failed"
 
-test_99b() {
-	[ -z "$(which cvs 2>/dev/null)" ] &&
-		skip_env "could not find cvs" && return
-	[ ! -d $DIR/d99cvsroot ] && test_99a
 	cd /etc/init.d
 	# some versions of cvs import exit(1) when asked to import links or
 	# files they can't read.  ignore those files.
-	TOIGNORE=$(find . -type l -printf '-I %f\n' -o \
-			! -perm /4 -printf '-I %f\n')
-	$RUNAS cvs -d $DIR/d99cvsroot import -m "nomesg" $TOIGNORE \
-		d99reposname vtag rtag
-}
-run_test 99b "cvs import ======================================="
+	local toignore=$(find . -type l -printf '-I %f\n' -o \
+			 ! -perm /4 -printf '-I %f\n')
+	$RUNAS cvs -d $DIR/$tdir.cvsroot import -m "nomesg" $toignore \
+		$tdir.reposname vtag rtag
 
-test_99c() {
-        [ -z "$(which cvs 2>/dev/null)" ] && skip_env "could not find cvs" && return
-	[ ! -d $DIR/d99cvsroot ] && test_99b
 	cd $DIR
-	test_mkdir -p $DIR/d99reposname
-	chown $RUNAS_ID $DIR/d99reposname
-	$RUNAS cvs -d $DIR/d99cvsroot co d99reposname
-}
-run_test 99c "cvs checkout ====================================="
+	test_mkdir $DIR/$tdir.reposname
+	chown $RUNAS_ID $DIR/$tdir.reposname
+	$RUNAS cvs -d $DIR/$tdir.cvsroot co $tdir.reposname
 
-test_99d() {
-        [ -z "$(which cvs 2>/dev/null)" ] && skip_env "could not find cvs" && return
-	[ ! -d $DIR/d99cvsroot ] && test_99c
-	cd $DIR/d99reposname
+	cd $DIR/$tdir.reposname
 	$RUNAS touch foo99
 	$RUNAS cvs add -m 'addmsg' foo99
-}
-run_test 99d "cvs add =========================================="
-
-test_99e() {
-        [ -z "$(which cvs 2>/dev/null)" ] && skip_env "could not find cvs" && return
-	[ ! -d $DIR/d99cvsroot ] && test_99c
-	cd $DIR/d99reposname
 	$RUNAS cvs update
-}
-run_test 99e "cvs update ======================================="
-
-test_99f() {
-        [ -z "$(which cvs 2>/dev/null)" ] && skip_env "could not find cvs" && return
-	[ ! -d $DIR/d99cvsroot ] && test_99d
-	cd $DIR/d99reposname
 	$RUNAS cvs commit -m 'nomsg' foo99
-    rm -fr $DIR/d99cvsroot
+	rm -fr $DIR/$tdir.cvsroot
 }
-run_test 99f "cvs commit ======================================="
+run_test 99 "cvs strange file/directory operations"
 
 test_100() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[ "$NETTYPE" = tcp ] || \
-		{ skip "TCP secure port test, not useful for NETTYPE=$NETTYPE" && \
+	[[ "$NETTYPE" =~ tcp ]] ||
+		{ skip "TCP secure port test, not useful for NETTYPE=$NETTYPE" &&
 			return ; }
 
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-	remote_servers || \
+	remote_servers ||
 		{ skip "useless for local single node setup" && return; }
 
 	netstat -tna | ( rc=1; while read PROT SND RCV LOCAL REMOTE STAT; do
@@ -6423,7 +6730,7 @@ cleanup_101a() {
 
 test_101a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[ $MDSCOUNT -ge 2 ] && skip "skip now for >= 2 MDTs" && return #LU-4322
+	[ $MDSCOUNT -ge 2 ] && skip "needs < 2 MDTs" && return #LU-4322
 	local s
 	local discard
 	local nreads=10000
@@ -6454,10 +6761,10 @@ test_101a() {
 	fi
 	rm -f $DIR/$tfile || true
 }
-run_test 101a "check read-ahead for random reads ================"
+run_test 101a "check read-ahead for random reads"
 
 setup_test101bc() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	local STRIPE_SIZE=$1
 	local FILE_LENGTH=$2
 	STRIPE_OFFSET=0
@@ -6512,8 +6819,7 @@ ra_check_101() {
 
 test_101b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[[ $OSTCOUNT -lt 2 ]] &&
-		skip_env "skipping stride IO stride-ahead test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	local STRIPE_SIZE=1048576
 	local STRIDE_SIZE=$((STRIPE_SIZE*OSTCOUNT))
 	if [ $SLOW == "yes" ]; then
@@ -6643,7 +6949,7 @@ test_101e() {
 	done
 
 	echo "Cancel LRU locks on lustre client to flush the client cache"
-	cancel_lru_locks osc
+	cancel_lru_locks $OSC
 
 	echo "Reset readahead stats"
 	$LCTL set_param -n llite.*.read_ahead_stats 0
@@ -6695,67 +7001,81 @@ test_101f() {
 }
 run_test 101f "check mmap read performance"
 
-test_101g() {
-	local rpcs
-	local osts=$(get_facets OST)
-	local list=$(comma_list $(osts_nodes))
-	local p="$TMP/$TESTSUITE-$TESTNAME.parameters"
-
-	save_lustre_params $osts "obdfilter.*.brw_size" > $p
+test_101g_brw_size_test() {
+	local mb=$1
+	local pages=$((mb * 1048576 / $(page_size)))
 
-	$LFS setstripe -c 1 $DIR/$tfile
+	$LCTL set_param osc.*.max_pages_per_rpc=${mb}M ||
+		{ error "unable to set max_pages_per_rpc=${mb}M"; return 1; }
+	for mp in $($LCTL get_param -n osc.*.max_pages_per_rpc); do
+		[ $mp -ne $pages ] && error "max_pages_per_rpc $mp != $pages" &&
+			return 2
+	done
 
-	if [ $(lustre_version_code ost1) -ge $(version_code 2.8.52) ]; then
-		set_osd_param $list '' brw_size 16M
+	$LCTL set_param -n osc.*.rpc_stats=0
 
-		echo "remount client to enable large RPC size"
-		remount_client $MOUNT || error "remount_client failed"
+	# 10 RPCs should be enough for the test
+	local count=10
+	dd if=/dev/zero of=$DIR/$tfile bs=${mb}M count=$count ||
+		{ error "dd write ${mb} MB blocks failed"; return 3; }
+	cancel_lru_locks osc
+	dd of=/dev/null if=$DIR/$tfile bs=${mb}M count=$count ||
+		{ error "dd write ${mb} MB blocks failed"; return 4; }
 
-		for mp in $($LCTL get_param -n osc.*.max_pages_per_rpc); do
-			[ "$mp" -eq 4096 ] ||
-				error "max_pages_per_rpc not correctly set"
-		done
+	# calculate number of full-sized read and write RPCs
+	rpcs=($($LCTL get_param -n 'osc.*.rpc_stats' |
+		sed -n '/pages per rpc/,/^$/p' |
+		awk '/'$pages':/ { reads += $2; writes += $6 }; \
+		END { print reads,writes }'))
+	[ ${rpcs[0]} -ne $count ] && error "${rpcs[0]} != $count read RPCs" &&
+		return 5
+	[ ${rpcs[1]} -ne $count ] && error "${rpcs[1]} != $count write RPCs" &&
+		return 6
 
-		$LCTL set_param -n osc.*.rpc_stats=0
+	return 0
+}
 
-		# 10*16 MiB should be enough for the test
-		dd if=/dev/zero of=$DIR/$tfile bs=16M count=10
-		cancel_lru_locks osc
-		dd of=/dev/null if=$DIR/$tfile bs=16M count=10
+test_101g() {
+	local rpcs
+	local osts=$(get_facets OST)
+	local list=$(comma_list $(osts_nodes))
+	local p="$TMP/$TESTSUITE-$TESTNAME.parameters"
+	local brw_size="obdfilter.*.brw_size"
+
+	$LFS setstripe -i 0 -c 1 $DIR/$tfile
+
+	local orig_mb=$(do_facet ost1 $LCTL get_param -n $brw_size | head -n 1)
+	if [ $(lustre_version_code ost1) -ge $(version_code 2.8.52) -a \
+	     $(lustre_version_code client) -ge $(version_code 2.8.52) ]; then
+		[ $(lustre_version_code ost1) -ge $(version_code 2.9.52) ] &&
+			suffix="M"
+		if [[ $orig_mb -lt 16 ]]; then
+			save_lustre_params $osts "$brw_size" > $p
+			do_nodes $list $LCTL set_param -n $brw_size=16$suffix ||
+				error "set 16MB RPC size failed"
+
+			echo "remount client to enable new RPC size"
+			remount_client $MOUNT || error "remount_client failed"
+		fi
 
-		# calculate 16 MiB RPCs
-		rpcs=$($LCTL get_param 'osc.*.rpc_stats' |
-		       sed -n '/pages per rpc/,/^$/p' |
-		       awk 'BEGIN { sum = 0 }; /4096:/ { sum += $2 };
-			    END { print sum }')
-		echo $rpcs RPCs
-		[ "$rpcs" -eq 10 ] || error "not all RPCs are 16 MiB BRW rpcs"
+		test_101g_brw_size_test 16 || error "16MB RPC test failed"
+		# should be able to set brw_size=12, but no rpc_stats for that
+		test_101g_brw_size_test 8 || error "8MB RPC test failed"
 	fi
 
-	echo "set RPC size to 4MB"
-
-	$LCTL set_param -n osc.*.max_pages_per_rpc=4M osc.*.rpc_stats=0
-	dd if=/dev/zero of=$DIR/$tfile bs=4M count=25
-	cancel_lru_locks osc
-	dd of=/dev/null if=$DIR/$tfile bs=4M count=25
-
-	# calculate 4 MiB RPCs
-	rpcs=$($LCTL get_param 'osc.*.rpc_stats' |
-		sed -n '/pages per rpc/,/^$/p' |
-		awk 'BEGIN { sum = 0 }; /1024:/ { sum += $2 };
-		     END { print sum }')
-	echo $rpcs RPCs
-	[ "$rpcs" -eq 25 ] || error "not all RPCs are 4 MiB BRW rpcs"
+	test_101g_brw_size_test 4 || error "4MB RPC test failed"
 
-	restore_lustre_params < $p
-	remount_client $MOUNT || error "remount_client failed"
+	if [[ $orig_mb -lt 16 ]]; then
+		restore_lustre_params < $p
+		remount_client $MOUNT || error "remount_client restore failed"
+	fi
 
 	rm -f $p $DIR/$tfile
 }
 run_test 101g "Big bulk(4/16 MiB) readahead"
 
 setup_test102() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	chown $RUNAS_ID $DIR/$tdir
 	STRIPE_SIZE=65536
 	STRIPE_OFFSET=1
@@ -6777,7 +7097,7 @@ setup_test102() {
 	done
 
 	cd $DIR
-	$1 $TAR cf $TMP/f102.tar $tdir --xattrs
+	$1 tar cf $TMP/f102.tar $tdir --xattrs
 }
 
 cleanup_test102() {
@@ -6836,13 +7156,15 @@ test_102a() {
 
 	setfattr -x user.author1 $testfile ||
 		error "$testfile error deleting user.author1"
-	getfattr -d -m user $testfile 2> /dev/null | grep "user.author1" &&
-		error "$testfile did not delete trusted.name1 xattr"
-
-	# b10667: setting lustre special xattr be silently discarded
 	echo "set lustre special xattr ..."
-	setfattr -n "trusted.lov" -v "invalid value" $testfile ||
-		error "$testfile allowed setting trusted.lov"
+	$LFS setstripe -c1 $testfile
+	local lovea=$(getfattr -n "trusted.lov" -e hex $testfile |
+		awk -F "=" '/trusted.lov/ { print $2 }' )
+	setfattr -n "trusted.lov" -v $lovea $testfile ||
+		error "$testfile doesn't ignore setting trusted.lov again"
+	setfattr -n "trusted.lov" -v "invalid_value" $testfile &&
+		error "$testfile allow setting invalid trusted.lov"
+	rm -f $testfile
 }
 run_test 102a "user xattr test =================================="
 
@@ -6852,7 +7174,7 @@ test_102b() {
 
 	# b10930: get/set/list trusted.lov xattr
 	echo "get/set/list trusted.lov xattr ..."
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping 2-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 	local testfile=$DIR/$tfile
 	$SETSTRIPE -S 65536 -i 1 -c $OSTCOUNT $testfile ||
 		error "setstripe failed"
@@ -6883,8 +7205,8 @@ test_102c() {
 
 	# b10930: get/set/list lustre.lov xattr
 	echo "get/set/list lustre.lov xattr ..."
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping 2-stripe test" && return
-	test_mkdir -p $DIR/$tdir
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	test_mkdir $DIR/$tdir
 	chown $RUNAS_ID $DIR/$tdir
 	local testfile=$DIR/$tdir/$tfile
 	$RUNAS $SETSTRIPE -S 65536 -i 1 -c $OSTCOUNT $testfile ||
@@ -6934,39 +7256,35 @@ compare_stripe_info1() {
 	return 0
 }
 
-find_lustre_tar() {
-	[ -n "$(which tar 2>/dev/null)" ] &&
-		strings $(which tar) | grep -q "lustre" && echo tar
+have_xattrs_include() {
+	tar --help | grep -q xattrs-include &&
+		echo --xattrs-include="lustre.*"
 }
 
 test_102d() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	# b10930: tar test for trusted.lov xattr
-	TAR=$(find_lustre_tar)
-	[ -z "$TAR" ] && skip_env "lustre-aware tar is not installed" && return
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping N-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	XINC=$(have_xattrs_include)
 	setup_test102
-	test_mkdir -p $DIR/d102d
-	$TAR xf $TMP/f102.tar -C $DIR/d102d --xattrs
-	cd $DIR/d102d/$tdir
+	tar xf $TMP/f102.tar -C $DIR/$tdir --xattrs $XINC
+	cd $DIR/$tdir/$tdir
 	compare_stripe_info1
 }
-run_test 102d "tar restore stripe info from tarfile,not keep osts ==========="
+run_test 102d "tar restore stripe info from tarfile,not keep osts"
 
 test_102f() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	# b10930: tar test for trusted.lov xattr
-	TAR=$(find_lustre_tar)
-	[ -z "$TAR" ] && skip_env "lustre-aware tar is not installed" && return
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping N-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	XINC=$(have_xattrs_include)
 	setup_test102
-	test_mkdir -p $DIR/d102f
+	test_mkdir $DIR/$tdir.restore
 	cd $DIR
-	$TAR cf - --xattrs $tdir | $TAR xf - --xattrs -C $DIR/d102f
-	cd $DIR/d102f/$tdir
+	tar cf - --xattrs $tdir | tar xf - \
+		-C $DIR/$tdir.restore --xattrs $XINC
+	cd $DIR/$tdir.restore/$tdir
 	compare_stripe_info1
 }
-run_test 102f "tar copy files, not keep osts ==========="
+run_test 102f "tar copy files, not keep osts"
 
 grow_xattr() {
 	local xsize=${1:-1024}	# in bytes
@@ -7036,14 +7354,12 @@ run_test 102i "lgetxattr test on symbolic link ============"
 
 test_102j() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	TAR=$(find_lustre_tar)
-	[ -z "$TAR" ] && skip_env "lustre-aware tar is not installed" && return
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "skipping N-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
+	XINC=$(have_xattrs_include)
 	setup_test102 "$RUNAS"
-	test_mkdir -p $DIR/d102j
-	chown $RUNAS_ID $DIR/d102j
-	$RUNAS $TAR xf $TMP/f102.tar -C $DIR/d102j --xattrs
-	cd $DIR/d102j/$tdir
+	chown $RUNAS_ID $DIR/$tdir
+	$RUNAS tar xf $TMP/f102.tar -C $DIR/$tdir --xattrs $XINC
+	cd $DIR/$tdir/$tdir
 	compare_stripe_info1 "$RUNAS"
 }
 run_test 102j "non-root tar restore stripe info from tarfile, not keep osts ==="
@@ -7051,28 +7367,28 @@ run_test 102j "non-root tar restore stripe info from tarfile, not keep osts ==="
 test_102k() {
 	[ -z "$(which setfattr 2>/dev/null)" ] &&
 		skip "could not find setfattr" && return
-        touch $DIR/$tfile
-        # b22187 just check that does not crash for regular file.
-        setfattr -n trusted.lov $DIR/$tfile
-        # b22187 'setfattr -n trusted.lov' should work as remove LOV EA for directories
-        local test_kdir=$DIR/d102k
-        test_mkdir $test_kdir
-        local default_size=`$GETSTRIPE -S $test_kdir`
-        local default_count=`$GETSTRIPE -c $test_kdir`
-        local default_offset=`$GETSTRIPE -i $test_kdir`
+	touch $DIR/$tfile
+	# b22187 just check that does not crash for regular file.
+	setfattr -n trusted.lov $DIR/$tfile
+	# b22187 'setfattr -n trusted.lov' should remove LOV EA for directories
+	local test_kdir=$DIR/$tdir
+	test_mkdir $test_kdir
+	local default_size=$($LFS getstripe -S $test_kdir)
+	local default_count=$($LFS getstripe -c $test_kdir)
+	local default_offset=$($LFS getstripe -i $test_kdir)
 	$SETSTRIPE -S 65536 -i 0 -c $OSTCOUNT $test_kdir ||
-                error 'dir setstripe failed'
-        setfattr -n trusted.lov $test_kdir
-        local stripe_size=`$GETSTRIPE -S $test_kdir`
-        local stripe_count=`$GETSTRIPE -c $test_kdir`
-        local stripe_offset=`$GETSTRIPE -i $test_kdir`
-        [ $stripe_size -eq $default_size ] ||
-                error "stripe size $stripe_size != $default_size"
-        [ $stripe_count -eq $default_count ] ||
-                error "stripe count $stripe_count != $default_count"
-        [ $stripe_offset -eq $default_offset ] ||
-                error "stripe offset $stripe_offset != $default_offset"
-        rm -rf $DIR/$tfile $test_kdir
+		error 'dir setstripe failed'
+	setfattr -n trusted.lov $test_kdir
+	local stripe_size=$($LFS getstripe -S $test_kdir)
+	local stripe_count=$($LFS getstripe -c $test_kdir)
+	local stripe_offset=$($LFS getstripe -i $test_kdir)
+	[ $stripe_size -eq $default_size ] ||
+		error "stripe size $stripe_size != $default_size"
+	[ $stripe_count -eq $default_count ] ||
+		error "stripe count $stripe_count != $default_count"
+	[ $stripe_offset -eq $default_offset ] ||
+		error "stripe offset $stripe_offset != $default_offset"
+	rm -rf $DIR/$tfile $test_kdir
 }
 run_test 102k "setfattr without parameter of value shouldn't cause a crash"
 
@@ -7157,8 +7473,13 @@ test_102n() { # LU-4101 mdt: protect internal xattrs
 		# Try to set a garbage xattr.
 		value=0sVGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIGl0c2VsZi4=
 
-		setfattr --name=trusted.$name --value="$value" $file1 ||
-			error "setxattr 'trusted.$name' failed"
+		if [[ x$name == "xlov" ]]; then
+			setfattr --name=trusted.lov --value="$value" $file1 &&
+			error "setxattr invalid 'trusted.lov' success"
+		else
+			setfattr --name=trusted.$name --value="$value" $file1 ||
+				error "setxattr invalid 'trusted.$name' failed"
+		fi
 
 		# Try to remove the xattr from $file1. We don't care if this
 		# appears to succeed or fail, we just don't want there to be
@@ -7246,7 +7567,7 @@ test_102r() {
 	rmdir $DIR/$tdir || error "rmdir"
 
 	#striped directory
-	test_mkdir -p $DIR/$tdir || error "make striped dir"
+	test_mkdir $DIR/$tdir
 	setfattr -n user.$(basename $tdir) $DIR/$tdir || error "setfattr dir"
 	getfattr -n user.$(basename $tdir) $DIR/$tdir || error "getfattr dir"
 	setfattr -x user.$(basename $tdir) $DIR/$tdir ||
@@ -7341,43 +7662,6 @@ test_103a() {
 }
 run_test 103a "acl test ========================================="
 
-test_103b() {
-	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        local noacl=false
-        local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
-        local mountopts=$MDS_MOUNT_OPTS
-
-        if [[ "$MDS_MOUNT_OPTS" =~ "noacl" ]]; then
-                noacl=true
-        else
-                # stop the MDT
-                stop $SINGLEMDS || error "failed to stop MDT."
-                # remount the MDT
-                if [ -z "$MDS_MOUNT_OPTS" ]; then
-                        MDS_MOUNT_OPTS="-o noacl"
-                else
-                        MDS_MOUNT_OPTS="${MDS_MOUNT_OPTS},noacl"
-                fi
-                start $SINGLEMDS $MDT_DEV $MDS_MOUNT_OPTS ||
-                        error "failed to start MDT."
-                MDS_MOUNT_OPTS=$mountopts
-        fi
-
-        touch $DIR/$tfile
-        setfacl -m u:bin:rw $DIR/$tfile && error "setfacl should fail"
-
-        if ! $noacl; then
-                # stop the MDT
-                stop $SINGLEMDS || error "failed to stop MDT."
-                # remount the MDT
-                start $SINGLEMDS $MDT_DEV $MDS_MOUNT_OPTS ||
-                        error "failed to start MDT."
-        fi
-
-	true
-}
-run_test 103b "MDS mount option 'noacl'"
-
 test_103c() {
 	mkdir -p $DIR/$tdir
 	cp -rp $DIR/$tdir $DIR/$tdir.bak
@@ -7457,11 +7741,11 @@ test_105c() {
 	fi
 	rm -f $DIR/$tfile
 }
-run_test 105c "lockf when mounted without -o flock test ========"
+run_test 105c "lockf when mounted without -o flock test"
 
 test_105d() { # bug 15924
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	flock_is_enabled || { skip "mount w/o flock enabled" && return; }
 	#define OBD_FAIL_LDLM_CP_CB_WAIT  0x315
 	$LCTL set_param fail_loc=0x80000315
@@ -7474,10 +7758,10 @@ test_105e() { # bug 22660 && 22040
 	touch $DIR/$tfile
 	flocks_test 3 $DIR/$tfile
 }
-run_test 105e "Two conflicting flocks from same process ======="
+run_test 105e "Two conflicting flocks from same process"
 
 test_106() { #bug 10921
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$DIR/$tdir && error "exec $DIR/$tdir succeeded"
 	chmod 777 $DIR/$tdir || error "chmod $DIR/$tdir failed"
 }
@@ -7518,10 +7802,9 @@ test_107() {
 run_test 107 "Coredump on SIG"
 
 test_110() {
-	test_mkdir -p $DIR/$tdir
-	test_mkdir $DIR/$tdir/$(str_repeat 'a' 255) ||
-		error "mkdir with 255 char failed"
-	test_mkdir $DIR/$tdir/$(str_repeat 'b' 256) &&
+	test_mkdir $DIR/$tdir
+	test_mkdir $DIR/$tdir/$(str_repeat 'a' 255)
+	$LFS mkdir -c $MDSCOUNT $DIR/$tdir/$(str_repeat 'b' 256) &&
 		error "mkdir with 256 char should fail, but did not"
 	touch $DIR/$tdir/$(str_repeat 'x' 255) ||
 		error "create with 255 char failed"
@@ -7533,58 +7816,141 @@ test_110() {
 }
 run_test 110 "filename length checking"
 
+#
+# Purpose: To verify dynamic thread (OSS) creation.
+#
 test_115() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	OSTIO_pre=$(ps -e | grep ll_ost_io | awk '{ print $4 }'| sort -n |
-		tail -1 | cut -c11-20)
-	[ -z "$OSTIO_pre" ] && skip "no OSS threads" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
+	# Lustre does not stop service threads once they are started.
+	# Reset number of running threads to default.
+	stopall
+	setupall
+
+	local OSTIO_pre
+	local save_params="$TMP/sanity-$TESTNAME.parameters"
+
+	# Get ll_ost_io count before I/O
+	OSTIO_pre=$(do_facet ost1 \
+		"$LCTL get_param ost.OSS.ost_io.threads_started | cut -d= -f2")
+	# Exit if lustre is not running (ll_ost_io not running).
+	[ -z "$OSTIO_pre" ] && error "no OSS threads"
+
 	echo "Starting with $OSTIO_pre threads"
+	local thread_max=$((OSTIO_pre * 2))
+	local rpc_in_flight=$((thread_max * 2))
+	# Number of I/O Process proposed to be started.
+	local nfiles
+	local facets=$(get_facets OST)
 
-	NUMTEST=20000
-	NUMFREE=$(df -i -P $DIR | tail -n 1 | awk '{ print $4 }')
-	[[ $NUMFREE -lt $NUMTEST ]] && NUMTEST=$(($NUMFREE - 1000))
-	echo "$NUMTEST creates/unlinks"
-	test_mkdir -p $DIR/$tdir
-	createmany -o $DIR/$tdir/$tfile $NUMTEST
-	unlinkmany $DIR/$tdir/$tfile $NUMTEST
+	save_lustre_params client "osc.*OST*.max_rpcs_in_flight" > $save_params
+	save_lustre_params $facets "ost.OSS.ost_io.threads_max" >> $save_params
 
-	OSTIO_post=$(ps -e | grep ll_ost_io | awk '{ print $4 }' | sort -n |
-		tail -1 | cut -c11-20)
+	# Set in_flight to $rpc_in_flight
+	$LCTL set_param osc.*OST*.max_rpcs_in_flight=$rpc_in_flight ||
+		error "Failed to set max_rpcs_in_flight to $rpc_in_flight"
+	nfiles=${rpc_in_flight}
+	# Set ost thread_max to $thread_max
+	do_facet ost1 "$LCTL set_param ost.OSS.ost_io.threads_max=$thread_max"
 
-	# don't return an error
-	[ $OSTIO_post == $OSTIO_pre ] && echo \
-	    "WARNING: No new ll_ost_io threads were created ($OSTIO_pre)" &&
-	    echo "This may be fine, depending on what ran before this test" &&
-	    echo "and how fast this system is." && return
+	# 5 Minutes should be sufficient for max number of OSS
+	# threads(thread_max) to be created.
+	local timeout=300
 
-	echo "Started with $OSTIO_pre threads, ended with $OSTIO_post"
+	# Start I/O.
+	local WTL=${WTL:-"$LUSTRE/tests/write_time_limit"}
+	test_mkdir $DIR/$tdir
+	for i in $(seq $nfiles); do
+		local file=$DIR/$tdir/${tfile}-$i
+		$LFS setstripe -c -1 -i 0 $file
+		($WTL $file $timeout)&
+	done
+
+	# I/O Started - Wait for thread_started to reach thread_max or report
+	# error if thread_started is more than thread_max.
+	echo "Waiting for thread_started to reach thread_max"
+	local thread_started=0
+	local end_time=$((SECONDS + timeout))
+
+	while [ $SECONDS -le $end_time ] ; do
+		echo -n "."
+		# Get ost i/o thread_started count.
+		thread_started=$(do_facet ost1 \
+			"$LCTL get_param \
+			ost.OSS.ost_io.threads_started | cut -d= -f2")
+		# Break out if thread_started is equal/greater than thread_max
+		if [[ $thread_started -ge $thread_max ]]; then
+			echo ll_ost_io thread_started $thread_started, \
+				equal/greater than thread_max $thread_max
+			break
+		fi
+		sleep 1
+	done
+
+	# Cleanup - We have the numbers, Kill i/o jobs if running.
+	jobcount=($(jobs -p))
+	for i in $(seq 0 $((${#jobcount[@]}-1)))
+	do
+		kill -9 ${jobcount[$i]}
+		if [ $? -ne 0 ] ; then
+			echo Warning: \
+			Failed to Kill \'WTL\(I/O\)\' with pid ${jobcount[$i]}
+		fi
+	done
+
+	# Cleanup files left by WTL binary.
+	for i in $(seq $nfiles); do
+		local file=$DIR/$tdir/${tfile}-$i
+		rm -rf $file
+		if [ $? -ne 0 ] ; then
+			echo "Warning: Failed to delete file $file"
+		fi
+	done
+
+	restore_lustre_params <$save_params
+	rm -f $save_params || echo "Warning: delete file '$save_params' failed"
+
+	# Error out if no new thread has started or Thread started is greater
+	# than thread max.
+	if [[ $thread_started -le $OSTIO_pre ||
+			$thread_started -gt $thread_max ]]; then
+		error "ll_ost_io: thread_started $thread_started" \
+		      "OSTIO_pre $OSTIO_pre, thread_max $thread_max." \
+		      "No new thread started or thread started greater " \
+		      "than thread_max."
+	fi
 }
 run_test 115 "verify dynamic thread creation===================="
 
 free_min_max () {
 	wait_delete_completed
 	AVAIL=($(lctl get_param -n osc.*[oO][sS][cC]-[^M]*.kbytesavail))
-	echo OST kbytes available: ${AVAIL[@]}
-	MAXI=0; MAXV=${AVAIL[0]}
-	MINI=0; MINV=${AVAIL[0]}
+	echo "OST kbytes available: ${AVAIL[@]}"
+	MAXV=${AVAIL[0]}
+	MAXI=0
+	MINV=${AVAIL[0]}
+	MINI=0
 	for ((i = 0; i < ${#AVAIL[@]}; i++)); do
 		#echo OST $i: ${AVAIL[i]}kb
 		if [[ ${AVAIL[i]} -gt $MAXV ]]; then
-			MAXV=${AVAIL[i]}; MAXI=$i
+			MAXV=${AVAIL[i]}
+			MAXI=$i
 		fi
 		if [[ ${AVAIL[i]} -lt $MINV ]]; then
-			MINV=${AVAIL[i]}; MINI=$i
+			MINV=${AVAIL[i]}
+			MINI=$i
 		fi
 	done
-	echo Min free space: OST $MINI: $MINV
-	echo Max free space: OST $MAXI: $MAXV
+	echo "Min free space: OST $MINI: $MINV"
+	echo "Max free space: OST $MAXI: $MAXV"
 }
 
 test_116a() { # was previously test_116()
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 
-	[[ $OSTCOUNT -lt 2 ]] && skip_env "$OSTCOUNT < 2 OSTs" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
 	echo -n "Free space priority "
 	do_facet $SINGLEMDS lctl get_param -n lo*.*-mdtlov.qos_prio_free |
@@ -7600,9 +7966,9 @@ test_116a() { # was previously test_116()
 
 	# Check if we need to generate uneven OSTs
 	test_mkdir -p $DIR/$tdir/OST${MINI}
-	local FILL=$(($MINV / 4))
-	local DIFF=$(($MAXV - $MINV))
-	local DIFF2=$(($DIFF * 100 / $MINV))
+	local FILL=$((MINV / 4))
+	local DIFF=$((MAXV - MINV))
+	local DIFF2=$((DIFF * 100 / MINV))
 
 	local threshold=$(do_facet $SINGLEMDS \
 		lctl get_param -n *.*MDT0000-mdtlov.qos_threshold_rr | head -n1)
@@ -7616,15 +7982,15 @@ test_116a() { # was previously test_116()
 	else
 		# generate uneven OSTs. Write 2% over the QOS threshold value
 		echo "no"
-		DIFF=$(($threshold - $DIFF2 + 2))
-		DIFF2=$(( ($MINV * $DIFF)/100 ))
-		echo "Fill ${DIFF}% remaining space in OST${MINI} with ${DIFF2}KB"
+		DIFF=$((threshold - DIFF2 + 2))
+		DIFF2=$((MINV * DIFF / 100))
+		echo "Fill $DIFF% remaining space in OST$MINI with ${DIFF2}KB"
 		$SETSTRIPE -i $MINI -c 1 $DIR/$tdir/OST${MINI} ||
 			error "setstripe failed"
-		DIFF=$(($DIFF2 / 2048))
+		DIFF=$((DIFF2 / 2048))
 		i=0
 		while [ $i -lt $DIFF ]; do
-			i=$(($i + 1))
+			i=$((i + 1))
 			dd if=/dev/zero of=$DIR/$tdir/OST${MINI}/$tfile-$i \
 				bs=2M count=1 2>/dev/null
 			echo -n .
@@ -7635,10 +8001,10 @@ test_116a() { # was previously test_116()
 		free_min_max
 	fi
 
-	DIFF=$(($MAXV - $MINV))
-	DIFF2=$(($DIFF * 100 / $MINV))
-	echo -n "diff=${DIFF}=${DIFF2}% must be > ${threshold}% for QOS mode..."
-	if [[ $DIFF2 -gt $threshold ]]; then
+	DIFF=$((MAXV - MINV))
+	DIFF2=$((DIFF * 100 / MINV))
+	echo -n "diff=$DIFF=$DIFF2% must be > $threshold% for QOS mode..."
+	if [ $DIFF2 -gt $threshold ]; then
 		echo "ok"
 	else
 		echo "failed - QOS mode won't be used"
@@ -7647,12 +8013,14 @@ test_116a() { # was previously test_116()
 		return
 	fi
 
-	MINI1=$MINI; MINV1=$MINV
-	MAXI1=$MAXI; MAXV1=$MAXV
+	MINI1=$MINI
+	MINV1=$MINV
+	MAXI1=$MAXI
+	MAXV1=$MAXV
 
 	# now fill using QOS
 	$SETSTRIPE -c 1 $DIR/$tdir
-	FILL=$(($FILL / 200))
+	FILL=$((FILL / 200))
 	if [ $FILL -gt 600 ]; then
 		FILL=600
 	fi
@@ -7670,31 +8038,31 @@ test_116a() { # was previously test_116()
 
 	echo "Note: free space may not be updated, so measurements might be off"
 	free_min_max
-	DIFF2=$(($MAXV - $MINV))
+	DIFF2=$((MAXV - MINV))
 	echo "free space delta: orig $DIFF final $DIFF2"
 	[ $DIFF2 -gt $DIFF ] && echo "delta got worse!"
-	DIFF=$(($MINV1 - ${AVAIL[$MINI1]}))
+	DIFF=$((MINV1 - ${AVAIL[$MINI1]}))
 	echo "Wrote ${DIFF}KB to smaller OST $MINI1"
-	DIFF2=$(($MAXV1 - ${AVAIL[$MAXI1]}))
+	DIFF2=$((MAXV1 - ${AVAIL[$MAXI1]}))
 	echo "Wrote ${DIFF2}KB to larger OST $MAXI1"
 	if [[ $DIFF -gt 0 ]]; then
-		FILL=$(($DIFF2 * 100 / $DIFF - 100))
+		FILL=$((DIFF2 * 100 / DIFF - 100))
 		echo "Wrote ${FILL}% more data to larger OST $MAXI1"
 	fi
 
 	# Figure out which files were written where
 	UUID=$(lctl get_param -n lov.${FSNAME}-clilov-*.target_obd |
-		  awk '/'$MINI1': / {print $2; exit}')
+	       awk '/'$MINI1': / {print $2; exit}')
 	echo $UUID
 	MINC=$($GETSTRIPE --ost $UUID $DIR/$tdir | grep $DIR | wc -l)
 	echo "$MINC files created on smaller OST $MINI1"
 	UUID=$(lctl get_param -n lov.${FSNAME}-clilov-*.target_obd |
-		  awk '/'$MAXI1': / {print $2; exit}')
+	       awk '/'$MAXI1': / {print $2; exit}')
 	echo $UUID
 	MAXC=$($GETSTRIPE --ost $UUID $DIR/$tdir | grep $DIR | wc -l)
 	echo "$MAXC files created on larger OST $MAXI1"
 	if [[ $MINC -gt 0 ]]; then
-		FILL=$(($MAXC * 100 / $MINC - 100))
+		FILL=$((MAXC * 100 / MINC - 100))
 		echo "Wrote ${FILL}% more files to larger OST $MAXI1"
 	fi
 	[[ $MAXC -gt $MINC ]] ||
@@ -8099,7 +8467,7 @@ test_118k()
 
 	#define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 	set_nodes_failloc "$(osts_nodes)" 0x20e
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 
 	for ((i=0;i<10;i++)); do
 		(dd if=/dev/zero of=$DIR/$tdir/$tfile-$i bs=1M count=10 || \
@@ -8119,16 +8487,16 @@ test_118l()
 {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	# LU-646
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$MULTIOP $DIR/$tdir Dy || error "fsync dir failed"
 	rm -rf $DIR/$tdir
 }
-run_test 118l "fsync dir ========="
+run_test 118l "fsync dir"
 
 test_118m() # LU-3066
 {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$MULTIOP $DIR/$tdir DY || error "fdatasync dir failed"
 	rm -rf $DIR/$tdir
 }
@@ -8154,7 +8522,7 @@ run_test 119a "Short directIO read must return actual read amount"
 
 test_119b() # bug 11737
 {
-        [ "$OSTCOUNT" -lt "2" ] && skip_env "skipping 2-stripe test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
         $SETSTRIPE -c 2 $DIR/$tfile || error "setstripe failed"
         dd if=/dev/zero of=$DIR/$tfile bs=1M count=1 seek=1 || error "dd failed"
@@ -8203,9 +8571,9 @@ run_test 119d "The DIO path should try to send a new rpc once one is completed"
 test_120a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-	test_mkdir -p $DIR/$tdir
-        [ -z "`lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel`" ] && \
-               skip "no early lock cancel on server" && return 0
+	test_mkdir $DIR/$tdir
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
 
 	lru_resize_disable mdc
 	lru_resize_disable osc
@@ -8235,13 +8603,13 @@ run_test 120a "Early Lock Cancel: mkdir test"
 test_120b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        test_mkdir $DIR/$tdir
-        [ -z "$(lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel)" ] && \
-               skip "no early lock cancel on server" && return 0
-        lru_resize_disable mdc
-        lru_resize_disable osc
-        cancel_lru_locks mdc
-        stat $DIR/$tdir > /dev/null
+	test_mkdir $DIR/$tdir
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
+	lru_resize_disable mdc
+	lru_resize_disable osc
+	cancel_lru_locks mdc
+	stat $DIR/$tdir > /dev/null
 	can1=$(do_facet $SINGLEMDS \
 	       "$LCTL get_param -n ldlm.services.ldlm_canceld.stats" |
 	       awk '/ldlm_cancel/ {print $2}')
@@ -8264,12 +8632,12 @@ test_120c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	test_mkdir -c1 $DIR/$tdir
-	[ -z "$(lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel)" ] && \
-	       skip "no early lock cancel on server" && return 0
-        lru_resize_disable mdc
-        lru_resize_disable osc
-	test_mkdir -p -c1 $DIR/$tdir/d1
-	test_mkdir -p -c1 $DIR/$tdir/d2
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
+	lru_resize_disable mdc
+	lru_resize_disable osc
+	test_mkdir -c1 $DIR/$tdir/d1
+	test_mkdir -c1 $DIR/$tdir/d2
 	touch $DIR/$tdir/d1/f1
 	cancel_lru_locks mdc
 	stat $DIR/$tdir/d1 $DIR/$tdir/d2 $DIR/$tdir/d1/f1 > /dev/null
@@ -8294,9 +8662,9 @@ run_test 120c "Early Lock Cancel: link test"
 test_120d() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-	test_mkdir -p -c1 $DIR/$tdir
-	[ -z "$(lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel)" ] && \
-	       skip "no early lock cancel on server" && return 0
+	test_mkdir -c1 $DIR/$tdir
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
 	lru_resize_disable mdc
 	lru_resize_disable osc
 	touch $DIR/$tdir
@@ -8322,12 +8690,12 @@ run_test 120d "Early Lock Cancel: setattr test"
 
 test_120e() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	! $($LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_can) &&
-		skip "no early lock cancel on server" && return 0
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	local dlmtrace_set=false
 
-	test_mkdir -p -c1 $DIR/$tdir
+	test_mkdir -c1 $DIR/$tdir
 	lru_resize_disable mdc
 	lru_resize_disable osc
 	! $LCTL get_param debug | grep -q dlmtrace &&
@@ -8365,14 +8733,14 @@ run_test 120e "Early Lock Cancel: unlink test"
 
 test_120f() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        [ -z "`lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel`" ] && \
-               skip "no early lock cancel on server" && return 0
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        test_mkdir -p -c1 $DIR/$tdir
-        lru_resize_disable mdc
-        lru_resize_disable osc
-	test_mkdir -p -c1 $DIR/$tdir/d1
-	test_mkdir -p -c1 $DIR/$tdir/d2
+	test_mkdir -c1 $DIR/$tdir
+	lru_resize_disable mdc
+	lru_resize_disable osc
+	test_mkdir -c1 $DIR/$tdir/d1
+	test_mkdir -c1 $DIR/$tdir/d2
 	dd if=/dev/zero of=$DIR/$tdir/d1/f1 count=1
 	dd if=/dev/zero of=$DIR/$tdir/d2/f2 count=1
 	cancel_lru_locks mdc
@@ -8405,17 +8773,17 @@ run_test 120f "Early Lock Cancel: rename test"
 
 test_120g() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        [ -z "`lctl get_param -n mdc.*.connect_flags | grep early_lock_cancel`" ] && \
-               skip "no early lock cancel on server" && return 0
+	$LCTL get_param -n mdc.*.connect_flags | grep -q early_lock_cancel ||
+		{ skip "no early lock cancel on server"; return 0; }
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-        lru_resize_disable mdc
-        lru_resize_disable osc
-        count=10000
-        echo create $count files
-        test_mkdir -p $DIR/$tdir
-        cancel_lru_locks mdc
-        cancel_lru_locks osc
-        t0=`date +%s`
+	lru_resize_disable mdc
+	lru_resize_disable osc
+	count=10000
+	echo create $count files
+	test_mkdir $DIR/$tdir
+	cancel_lru_locks mdc
+	cancel_lru_locks osc
+	t0=$(date +%s)
 
 	can0=$(do_facet $SINGLEMDS \
 	       "$LCTL get_param -n ldlm.services.ldlm_canceld.stats" |
@@ -8465,14 +8833,14 @@ run_test 121 "read cancel race ========="
 
 test_123a() { # was test 123, statahead(bug 11401)
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-        SLOWOK=0
-        if [ -z "$(grep "processor.*: 1" /proc/cpuinfo)" ]; then
-            log "testing on UP system. Performance may be not as good as expected."
-			SLOWOK=1
-        fi
+	SLOWOK=0
+	if ! grep -q "processor.*: 1" /proc/cpuinfo; then
+		log "testing UP system. Performance may be lower than expected."
+		SLOWOK=1
+	fi
 
-        rm -rf $DIR/$tdir
-        test_mkdir -p $DIR/$tdir
+	rm -rf $DIR/$tdir
+	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
@@ -8548,7 +8916,7 @@ run_test 123a "verify statahead work"
 
 test_123b () { # statahead(bug 15027)
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	createmany -o $DIR/$tdir/$tfile-%d 1000
 
         cancel_lru_locks mdc
@@ -8568,20 +8936,20 @@ run_test 123b "not panic with network error in statahead enqueue (bug 15027)"
 
 test_124a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[ -z "$($LCTL get_param -n mdc.*.connect_flags | grep lru_resize)" ] &&
-		skip "no lru resize on server" && return 0
-        local NR=2000
-        test_mkdir -p $DIR/$tdir || error "failed to create $DIR/$tdir"
+	$LCTL get_param -n mdc.*.connect_flags | grep -q lru_resize ||
+		{ skip "no lru resize on server"; return 0; }
+	local NR=2000
+	test_mkdir $DIR/$tdir
 
-        log "create $NR files at $DIR/$tdir"
-        createmany -o $DIR/$tdir/f $NR ||
-                error "failed to create $NR files in $DIR/$tdir"
+	log "create $NR files at $DIR/$tdir"
+	createmany -o $DIR/$tdir/f $NR ||
+		error "failed to create $NR files in $DIR/$tdir"
 
-        cancel_lru_locks mdc
-        ls -l $DIR/$tdir > /dev/null
+	cancel_lru_locks mdc
+	ls -l $DIR/$tdir > /dev/null
 
-        local NSDIR=""
-        local LRU_SIZE=0
+	local NSDIR=""
+	local LRU_SIZE=0
 	for VALUE in $($LCTL get_param ldlm.namespaces.*mdc-*.lru_size); do
 		local PARAM=$(echo ${VALUE[0]} | cut -d "=" -f1)
 		LRU_SIZE=$($LCTL get_param -n $PARAM)
@@ -8670,8 +9038,8 @@ get_max_pool_limit()
 
 test_124b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[ -z "$($LCTL get_param -n mdc.*.connect_flags | grep lru_resize)" ] &&
-		skip "no lru resize on server" && return 0
+	$LCTL get_param -n mdc.*.connect_flags | grep -q lru_resize ||
+		{ skip "no lru resize on server"; return 0; }
 
 	LIMIT=$(get_max_pool_limit)
 
@@ -8688,8 +9056,7 @@ test_124b() {
 	fi
 
 	lru_resize_disable mdc
-	test_mkdir -p $DIR/$tdir/disable_lru_resize ||
-		error "failed to create $DIR/$tdir/disable_lru_resize"
+	test_mkdir -p $DIR/$tdir/disable_lru_resize
 
         createmany -o $DIR/$tdir/disable_lru_resize/f $NR
         log "doing ls -la $DIR/$tdir/disable_lru_resize 3 times"
@@ -8711,9 +9078,8 @@ test_124b() {
         log "lru_size = $(lctl get_param -n ldlm.namespaces.*mdc*.lru_size)"
         unlinkmany $DIR/$tdir/disable_lru_resize/f $NR
 
-        lru_resize_enable mdc
-        test_mkdir -p $DIR/$tdir/enable_lru_resize ||
-		error "failed to create $DIR/$tdir/enable_lru_resize"
+	lru_resize_enable mdc
+	test_mkdir -p $DIR/$tdir/enable_lru_resize
 
         createmany -o $DIR/$tdir/enable_lru_resize/f $NR
         log "doing ls -la $DIR/$tdir/enable_lru_resize 3 times"
@@ -8747,13 +9113,13 @@ run_test 124b "lru resize (performance test) ======================="
 
 test_124c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	[ -z "$($LCTL get_param -n mdc.*.connect_flags | grep lru_resize)" ] &&
-		skip "no lru resize on server" && return 0
+	$LCTL get_param -n mdc.*.connect_flags | grep -q lru_resize ||
+		{ skip "no lru resize on server"; return 0; }
 
 	# cache ununsed locks on client
 	local nr=100
 	cancel_lru_locks mdc
-	test_mkdir -p $DIR/$tdir || error "failed to create $DIR/$tdir"
+	test_mkdir $DIR/$tdir
 	createmany -o $DIR/$tdir/f $nr ||
 		error "failed to create $nr files in $DIR/$tdir"
 	ls -l $DIR/$tdir > /dev/null
@@ -8765,7 +9131,7 @@ test_124c() {
 	echo "unused=$unused, max_age=$max_age, recalc_p=$recalc_p"
 
 	# set lru_max_age to 1 sec
-	$LCTL set_param $nsdir.lru_max_age=1000 # jiffies
+	$LCTL set_param $nsdir.lru_max_age=1000 # milliseconds
 	echo "sleep $((recalc_p * 2)) seconds..."
 	sleep $((recalc_p * 2))
 
@@ -8778,19 +9144,22 @@ test_124c() {
 run_test 124c "LRUR cancel very aged locks"
 
 test_125() { # 13358
-	[ -z "$(lctl get_param -n llite.*.client_type | grep local)" ] && skip "must run as local client" && return
-	[ -z "$(lctl get_param -n mdc.*-mdc-*.connect_flags | grep acl)" ] && skip "must have acl enabled" && return
+	$LCTL get_param -n llite.*.client_type | grep -q local ||
+		{ skip "must run as local client"; return; }
+	$LCTL get_param -n mdc.*-mdc-*.connect_flags | grep -q acl ||
+		{ skip "must have acl enabled"; return; }
 	[ -z "$(which setfacl)" ] && skip "must have setfacl tool" && return
-	test_mkdir -p $DIR/d125 || error "mkdir failed"
-	$SETSTRIPE -S 65536 -c -1 $DIR/d125 || error "setstripe failed"
-	setfacl -R -m u:bin:rwx $DIR/d125 || error "setfacl $DIR/d125 failed"
-	ls -ld $DIR/d125 || error "cannot access $DIR/d125"
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -S 65536 -c -1 $DIR/$tdir || error "setstripe failed"
+	setfacl -R -m u:bin:rwx $DIR/$tdir || error "setfacl $DIR/$tdir failed"
+	ls -ld $DIR/$tdir || error "cannot access $DIR/$tdir"
 }
 run_test 125 "don't return EPROTO when a dir has a non-default striping and ACLs"
 
 test_126() { # bug 12829/13455
-	[ -z "$(lctl get_param -n llite.*.client_type | grep local)" ] && skip "must run as local client" && return
-	[ "$UID" != 0 ] && skip_env "skipping $TESTNAME (must run as root)" && return
+	$LCTL get_param -n llite.*.client_type | grep -q local ||
+		{ skip "must run as local client"; return; }
+	[ "$UID" != 0 ] && skip_env "$TESTNAME (must run as root)" && return
 	$GSS && skip "must run as gss disabled" && return
 
 	$RUNAS -u 0 -g 1 touch $DIR/$tfile || error "touch failed"
@@ -8901,18 +9270,16 @@ set_dir_limits () {
 	local canondev
 	local node
 
-	local LDPROC=/proc/fs/ldiskfs
+	local ldproc=/proc/fs/ldiskfs
 	local facets=$(get_facets MDS)
 
 	for facet in ${facets//,/ }; do
 		canondev=$(ldiskfs_canon \
 			   *.$(convert_facet2label $facet).mntdev $facet)
-		do_facet $facet "test -e $LDPROC/$canondev/max_dir_size" ||
-						LDPROC=/sys/fs/ldiskfs
-		do_facet $facet "echo $1 >$LDPROC/$canondev/max_dir_size"
-		do_facet $facet "test -e $LDPROC/$canondev/warning_dir_size" ||
-						LDPROC=/sys/fs/ldiskfs
-		do_facet $facet "echo $2 >$LDPROC/$canondev/warning_dir_size"
+		do_facet $facet "test -e $ldproc/$canondev/max_dir_size" ||
+			ldproc=/sys/fs/ldiskfs
+		do_facet $facet "echo $1 >$ldproc/$canondev/max_dir_size"
+		do_facet $facet "echo $2 >$ldproc/$canondev/warning_dir_size"
 	done
 }
 
@@ -8925,70 +9292,65 @@ check_mds_dmesg() {
 }
 
 test_129() {
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.5.56) ]] ||
+		{ skip "Need MDS version with at least 2.5.56"; return 0; }
+
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	if [ "$(facet_fstype $SINGLEMDS)" != ldiskfs ]; then
-		skip "Only applicable to ldiskfs-based MDTs"
+		skip "ldiskfs only test"
 		return
 	fi
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	local ENOSPC=28
 	local EFBIG=27
-	local has_warning=0
+	local has_warning=false
 
 	rm -rf $DIR/$tdir
 	mkdir -p $DIR/$tdir
 
 	# block size of mds1
-	local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
-	local MDSBLOCKSIZE=$($LCTL get_param -n mdc.*MDT0000*.blocksize)
-	local MAX=$((MDSBLOCKSIZE * 5))
-	set_dir_limits $MAX $MAX
-	local I=$(stat -c%s "$DIR/$tdir")
-	local J=0
-	while [[ $I -le $MAX ]]; do
-		$MULTIOP $DIR/$tdir/$J Oc
+	local maxsize=$(($($LCTL get_param -n mdc.*MDT0000*.blocksize) * 5))
+	set_dir_limits $maxsize $maxsize
+	local dirsize=$(stat -c%s "$DIR/$tdir")
+	local nfiles=0
+	while [[ $dirsize -le $maxsize ]]; do
+		$MULTIOP $DIR/$tdir/file_base_$nfiles Oc
 		rc=$?
-		if [ $has_warning -eq 0 ]; then
-			check_mds_dmesg '"is approaching"' &&
-				has_warning=1
+		if ! $has_warning; then
+			check_mds_dmesg '"is approaching"' && has_warning=true
 		fi
-		#check two errors ENOSPC for new version of ext4 max_dir_size patch
-		#mainline kernel commit df981d03eeff7971ac7e6ff37000bfa702327ef1
-		#and EFBIG for previous versions
+		# 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 -o $rc -eq $ENOSPC ]; then
 			set_dir_limits 0 0
 			echo "return code $rc received as expected"
 
-			createmany -o $DIR/$tdir/$J_file_ 1000 ||
+			createmany -o $DIR/$tdir/file_extra_$nfiles. 5 ||
 				error_exit "create failed w/o dir size limit"
 
 			check_mds_dmesg '"has reached"' ||
-				error_exit "has reached message should be output"
+				error_exit "reached message should be output"
 
 			[ $has_warning -eq 0 ] &&
 				error_exit "warning message should be output"
 
-			I=$(stat -c%s "$DIR/$tdir")
+			dirsize=$(stat -c%s "$DIR/$tdir")
 
-			if [ $(lustre_version_code $SINGLEMDS) -lt \
-					$(version_code 2.4.51) ]
-			then
-				[[ $I -eq $MAX ]] && return 0
-			else
-				[[ $I -gt $MAX ]] && return 0
-			fi
-			error_exit "current dir size $I, previous limit $MAX"
+			[[ $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 code $rc received instead of expected " \
-				   "$EFBIG or $ENOSPC, files in dir $I"
+			error_exit "return $rc received instead of expected " \
+				   "$EFBIG or $ENOSPC, files in dir $dirsize"
 		fi
-		J=$((J+1))
-		I=$(stat -c%s "$DIR/$tdir")
+		nfiles=$((nfiles + 1))
+		dirsize=$(stat -c%s "$DIR/$tdir")
 	done
 
 	set_dir_limits 0 0
-	error "exceeded dir size limit $MAX($MDSCOUNT) : $I bytes"
+	error "exceeded dir size limit $maxsize($MDSCOUNT) : $dirsize bytes"
 }
 run_test 129 "test directory size limit ========================"
 
@@ -9049,8 +9411,7 @@ test_130a() {
 run_test 130a "FIEMAP (1-stripe file)"
 
 test_130b() {
-	[ "$OSTCOUNT" -lt "2" ] &&
-		skip_env "skipping FIEMAP on $OSTCOUNT-stripe file" && return
+	[ "$OSTCOUNT" -lt "2" ] && skip_env "needs >= 2 OSTs" && return
 
 	local filefrag_op=$(filefrag -e 2>&1 | grep "invalid option")
 	[ -n "$filefrag_op" ] && skip_env "filefrag does not support FIEMAP" &&
@@ -9110,8 +9471,7 @@ test_130b() {
 run_test 130b "FIEMAP ($OSTCOUNT-stripe file)"
 
 test_130c() {
-	[ "$OSTCOUNT" -lt "2" ] &&
-		skip_env "skipping FIEMAP on 2-stripe file" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
 	filefrag_op=$(filefrag -e 2>&1 | grep "invalid option")
 	[ -n "$filefrag_op" ] && skip "filefrag does not support FIEMAP" &&
@@ -9177,8 +9537,7 @@ test_130c() {
 run_test 130c "FIEMAP (2-stripe file with hole)"
 
 test_130d() {
-	[ "$OSTCOUNT" -lt "3" ] &&
-		skip_env "skipping FIEMAP on N-stripe file test" && return
+	[[ $OSTCOUNT -lt 3 ]] && skip_env "needs >= 3 OSTs" && return
 
 	filefrag_op=$(filefrag -e 2>&1 | grep "invalid option")
 	[ -n "$filefrag_op" ] && skip "filefrag does not support FIEMAP" &&
@@ -9192,8 +9551,8 @@ test_130d() {
 	[ "$(facet_fstype ost$(($($GETSTRIPE -i $fm_file) + 1)))" = "zfs" ] &&
 		skip "ORI-366/LU-1941: FIEMAP unimplemented on ZFS" && return
 
-	local actual_stripecnt=$($GETSTRIPE -c $fm_file)
-	dd if=/dev/zero of=$fm_file bs=1M count=$actual_stripecnt ||
+	local actual_stripe_count=$($GETSTRIPE -c $fm_file)
+	dd if=/dev/zero of=$fm_file bs=1M count=$actual_stripe_count ||
 		error "dd failed on $fm_file"
 
 	filefrag -ves $fm_file || error "filefrag $fm_file failed"
@@ -9225,7 +9584,7 @@ test_130d() {
 		(( tot_len += ext_len ))
 		last_lun=$frag_lun
 	done
-	if (( num_luns != actual_stripecnt || tot_len != 1024 )); then
+	if (( num_luns != actual_stripe_count || tot_len != 1024 )); then
 		cleanup_130
 		error "FIEMAP on $fm_file failed; returned wrong number of " \
 			"luns or wrong len for OST $last_lun"
@@ -9239,8 +9598,7 @@ test_130d() {
 run_test 130d "FIEMAP (N-stripe file)"
 
 test_130e() {
-	[ "$OSTCOUNT" -lt "2" ] &&
-		skip_env "skipping continuation FIEMAP test" && return
+	[[ $OSTCOUNT -lt 2 ]] && skip_env "needs >= 2 OSTs" && return
 
 	filefrag_op=$(filefrag -e 2>&1 | grep "invalid option")
 	[ -n "$filefrag_op" ] && skip "filefrag does not support FIEMAP" && return
@@ -9304,19 +9662,24 @@ run_test 130e "FIEMAP (test continuation FIEMAP calls)"
 
 # Test for writev/readv
 test_131a() {
-	rwv -f $DIR/$tfile -w -n 3 524288 1048576 1572864 || \
-	error "writev test failed"
-	rwv -f $DIR/$tfile -r -v -n 2 1572864 1048576 || \
-	error "readv failed"
+	rwv -f $DIR/$tfile -w -n 3 524288 1048576 1572864 ||
+		error "writev test failed"
+	rwv -f $DIR/$tfile -r -v -n 2 1572864 1048576 ||
+		error "readv failed"
 	rm -f $DIR/$tfile
 }
 run_test 131a "test iov's crossing stripe boundary for writev/readv"
 
 test_131b() {
-	rwv -f $DIR/$tfile -w -a -n 3 524288 1048576 1572864 || \
-	error "append writev test failed"
-	rwv -f $DIR/$tfile -w -a -n 2 1572864 1048576 || \
-	error "append writev test failed"
+	local fsize=$((524288 + 1048576 + 1572864))
+	rwv -f $DIR/$tfile -w -a -n 3 524288 1048576 1572864 &&
+		$CHECKSTAT -t file $DIR/$tfile -s $fsize ||
+			error "append writev test failed"
+
+	((fsize += 1572864 + 1048576))
+	rwv -f $DIR/$tfile -w -a -n 2 1572864 1048576 &&
+		$CHECKSTAT -t file $DIR/$tfile -s $fsize ||
+			error "append writev test failed"
 	rm -f $DIR/$tfile
 }
 run_test 131b "test append writev"
@@ -9346,22 +9709,27 @@ test_131e() {
 run_test 131e "test read hitting hole"
 
 check_stats() {
+	local facet=$1
+	local op=$2
+	local want=${3:-0}
 	local res
-	local count
-	case $1 in
-	$SINGLEMDS) res=`do_facet $SINGLEMDS $LCTL get_param mdt.$FSNAME-MDT0000.md_stats | grep "$2"`
+
+	case $facet in
+	mds*) res=$(do_facet $facet \
+		   $LCTL get_param mdt.$FSNAME-MDT0000.md_stats | grep "$op")
 		 ;;
-	ost) res=`do_facet ost1 $LCTL get_param obdfilter.$FSNAME-OST0000.stats | grep "$2"`
+	ost*) res=$(do_facet $facet \
+		   $LCTL get_param obdfilter.$FSNAME-OST0000.stats | grep "$op")
 		 ;;
-	*) error "Wrong argument $1" ;;
+	*) error "Wrong facet '$facet'" ;;
 	esac
 	echo $res
-	[ -z "$res" ] && error "The counter for $2 on $1 was not incremented"
+	[ "$res" ] || error "The counter for $op on $facet was not incremented"
 	# if the argument $3 is zero, it means any stat increment is ok.
-	if [[ $3 -gt 0 ]]; then
-		count=$(echo $res | awk '{ print $2 }')
-		[[ $count -ne $3 ]] &&
-			error "The $2 counter on $1 is wrong - expected $3"
+	if [[ $want -gt 0 ]]; then
+		local count=$(echo $res | awk '{ print $2 }')
+		[[ $count -ne $want ]] &&
+			error "The $op counter on $facet is $count, not $want"
 	fi
 }
 
@@ -9445,11 +9813,11 @@ test_133c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
-	local testdir=$DIR/${tdir}/stats_testdir
-	test_mkdir -p ${testdir} || error "mkdir failed"
+	local testdir=$DIR/$tdir/stats_testdir
+	test_mkdir -p $testdir
 
 	# verify obdfilter stats.
-	$SETSTRIPE -c 1 -i 0 ${testdir}/${tfile}
+	$SETSTRIPE -c 1 -i 0 $testdir/$tfile
 	sync
 	cancel_lru_locks osc
 	wait_delete_completed
@@ -9458,22 +9826,23 @@ test_133c() {
 	do_facet $SINGLEMDS $LCTL set_param mdt.*.md_stats=clear
 	do_facet ost1 $LCTL set_param obdfilter.*.stats=clear
 
-	dd if=/dev/zero of=${testdir}/${tfile} conv=notrunc bs=512k count=1 || error "dd failed"
+	dd if=/dev/zero of=$testdir/$tfile conv=notrunc bs=512k count=1 ||
+		error "dd failed"
 	sync
 	cancel_lru_locks osc
-	check_stats ost "write" 1
+	check_stats ost1 "write" 1
 
-	dd if=${testdir}/${tfile} of=/dev/null bs=1k count=1 || error "dd failed"
-	check_stats ost "read" 1
+	dd if=$testdir/$tfile of=/dev/null bs=1k count=1 || error "dd failed"
+	check_stats ost1 "read" 1
 
-	> ${testdir}/${tfile} || error "truncate failed"
-	check_stats ost "punch" 1
+	> $testdir/$tfile || error "truncate failed"
+	check_stats ost1 "punch" 1
 
-	rm -f ${testdir}/${tfile} || error "file remove failed"
+	rm -f $testdir/$tfile || error "file remove failed"
 	wait_delete_completed
-	check_stats ost "destroy" 1
+	check_stats ost1 "destroy" 1
 
-	rm -rf $DIR/${tdir}
+	rm -rf $DIR/$tdir
 }
 run_test 133c "Verifying OST stats ========================================"
 
@@ -9648,17 +10017,15 @@ test_133e() {
 }
 run_test 133e "Verifying OST {read,write}_bytes nid stats ================="
 
-proc_dirs=""
-for dir in /proc/fs/lustre/ /proc/sys/lnet/ /proc/sys/lustre/ \
-	   /sys/fs/lustre/ /sys/fs/lnet/ /sys/kernel/debug/lnet/ \
-	   /sys/kernel/debug/lustre/; do
-	[[ -d $dir ]] && proc_dirs+=" $dir"
-done
+proc_regexp="/{proc,sys}/{fs,sys,kernel/debug}/{lustre,lnet}/"
 
 test_133f() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	# 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
 
 	# Second verifying readability.
@@ -9667,12 +10034,16 @@ test_133f() {
 	# eventually, this can also be replaced with "lctl get_param -R",
 	# but not until that option is always available on the server
 	local facet
-	for facet in $SINGLEMDS ost1; do
-		do_facet $facet find $proc_dirs \
+	for facet in mds1 ost1; do
+		local facet_proc_dirs=$(do_facet $facet \
+					\\\ls -d $proc_regexp 2>/dev/null)
+		echo "${facet}_proc_dirs='$facet_proc_dirs'"
+		[ -z "$facet_proc_dirs" ] && error "no proc_dirs on $facet"
+		do_facet $facet find $facet_proc_dirs \
 			! -name req_history \
 			-exec cat '{}' \\\; &> /dev/null
 
-		do_facet $facet find $proc_dirs \
+		do_facet $facet find $facet_proc_dirs \
 			! -name req_history \
 			-type f \
 			-exec cat '{}' \\\; &> /dev/null ||
@@ -9685,6 +10056,9 @@ test_133g() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	# Second verifying writability.
+	local proc_dirs=$(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 \
 		-type f \
 		-not -name force_lbug \
@@ -9692,21 +10066,20 @@ test_133g() {
 		-exec badarea_io '{}' \; &> /dev/null ||
 		error "find $proc_dirs failed"
 
-	[ $(lustre_version_code $SINGLEMDS) -le $(version_code 2.5.54) ] &&
-		skip "Too old lustre on MDS" && return
-
-	[ $(lustre_version_code ost1) -le $(version_code 2.5.54) ] &&
-		skip "Too old lustre on ost1" && return
-
 	local facet
-	for facet in $SINGLEMDS ost1; do
-		do_facet $facet find $proc_dirs \
+	for facet in mds1 ost1; do
+		[ $(lustre_version_code $facet) -le $(version_code 2.5.54) ] &&
+			skip "Too old lustre on $facet" && continue
+		local facet_proc_dirs=$(do_facet $facet \
+					\\\ls -d $proc_regexp 2> /dev/null)
+		echo "${facet}_proc_dirs='$facet_proc_dirs'"
+		[ -z "$facet_proc_dirs" ] && error "no proc_dirs on $facet"
+		do_facet $facet find $facet_proc_dirs \
 			-type f \
 			-not -name force_lbug \
 			-not -name changelog_mask \
 			-exec badarea_io '{}' \\\; &> /dev/null ||
-		error "$facet find $proc_dirs failed"
-
+				error "$facet find $facet_proc_dirs failed"
 	done
 
 	# remount the FS in case writes/reads /proc break the FS
@@ -9716,6 +10089,34 @@ test_133g() {
 }
 run_test 133g "Check for Oopses on bad io area writes/reads in /proc"
 
+test_133h() {
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.9.54) ]] &&
+		skip "Need MDS version at least 2.9.54" && return
+
+	local facet
+	for facet in client mds1 ost1; do
+		local facet_proc_dirs=$(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[*]}"
+	done
+}
+run_test 133h "Proc files should end with newlines"
+
 test_134a() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.7.54) ]] &&
@@ -9795,32 +10196,32 @@ run_test 134b "Server rejects lock request when reaching lock_limit_mb"
 
 test_140() { #bug-17379
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p $DIR/$tdir || error "Creating dir $DIR/$tdir"
+	test_mkdir $DIR/$tdir
 	cd $DIR/$tdir || error "Changing to $DIR/$tdir"
 	cp $(which stat) . || error "Copying stat to $DIR/$tdir"
 
 	# VFS limits max symlink depth to 5(4KSTACK) or 7(8KSTACK) or 8
 	# For kernel > 3.5, bellow only tests consecutive symlink (MAX 40)
 	local i=0
-        while i=`expr $i + 1`; do
-                test_mkdir -p $i || error "Creating dir $i"
-                cd $i || error "Changing to $i"
-                ln -s ../stat stat || error "Creating stat symlink"
-                # Read the symlink until ELOOP present,
-                # not LBUGing the system is considered success,
-                # we didn't overrun the stack.
-                $OPENFILE -f O_RDONLY stat >/dev/null 2>&1; ret=$?
-                [ $ret -ne 0 ] && {
-                        if [ $ret -eq 40 ]; then
-                                break  # -ELOOP
-                        else
-                                error "Open stat symlink"
-                                return
-                        fi
-                }
-        done
-        i=`expr $i - 1`
-        echo "The symlink depth = $i"
+	while i=$((i + 1)); do
+		test_mkdir $i
+		cd $i || error "Changing to $i"
+		ln -s ../stat stat || error "Creating stat symlink"
+		# Read the symlink until ELOOP present,
+		# not LBUGing the system is considered success,
+		# we didn't overrun the stack.
+		$OPENFILE -f O_RDONLY stat >/dev/null 2>&1; ret=$?
+		if [ $ret -ne 0 ]; then
+			if [ $ret -eq 40 ]; then
+				break  # -ELOOP
+			else
+				error "Open stat symlink"
+					return
+			fi
+		fi
+	done
+	i=$((i - 1))
+	echo "The symlink depth = $i"
 	[ $i -eq 5 -o $i -eq 7 -o $i -eq 8 -o $i -eq 40 ] ||
 					error "Invalid symlink depth"
 
@@ -9836,31 +10237,31 @@ test_150() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	local TF="$TMP/$tfile"
 
-        dd if=/dev/urandom of=$TF bs=6096 count=1 || error "dd failed"
-        cp $TF $DIR/$tfile
-        cancel_lru_locks osc
-        cmp $TF $DIR/$tfile || error "$TMP/$tfile $DIR/$tfile differ"
-        remount_client $MOUNT
-        df -P $MOUNT
-        cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (remount)"
+	dd if=/dev/urandom of=$TF bs=6096 count=1 || error "dd failed"
+	cp $TF $DIR/$tfile
+	cancel_lru_locks $OSC
+	cmp $TF $DIR/$tfile || error "$TMP/$tfile $DIR/$tfile differ"
+	remount_client $MOUNT
+	df -P $MOUNT
+	cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (remount)"
 
-        $TRUNCATE $TF 6000
-        $TRUNCATE $DIR/$tfile 6000
-        cancel_lru_locks osc
-        cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (truncate1)"
+	$TRUNCATE $TF 6000
+	$TRUNCATE $DIR/$tfile 6000
+	cancel_lru_locks $OSC
+	cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (truncate1)"
 
-        echo "12345" >>$TF
-        echo "12345" >>$DIR/$tfile
-        cancel_lru_locks osc
-        cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (append1)"
+	echo "12345" >>$TF
+	echo "12345" >>$DIR/$tfile
+	cancel_lru_locks $OSC
+	cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (append1)"
 
-        echo "12345" >>$TF
-        echo "12345" >>$DIR/$tfile
-        cancel_lru_locks osc
-        cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (append2)"
+	echo "12345" >>$TF
+	echo "12345" >>$DIR/$tfile
+	cancel_lru_locks $OSC
+	cmp $TF $DIR/$tfile || error "$TF $DIR/$tfile differ (append2)"
 
-        rm -f $TF
-        true
+	rm -f $TF
+	true
 }
 run_test 150 "truncate/append tests"
 
@@ -9868,12 +10269,12 @@ run_test 150 "truncate/append tests"
 function roc_hit_init() {
 	local list=$(comma_list $(osts_nodes))
 	local dir=$DIR/$tdir-check
-	local file=$dir/file
+	local file=$dir/$tfile
 	local BEFORE
 	local AFTER
 	local idx
 
-	test_mkdir -p $dir
+	test_mkdir $dir
 	#use setstripe to do a write to every ost
 	for i in $(seq 0 $((OSTCOUNT-1))); do
 		$SETSTRIPE -c 1 -i $i $dir || error "$SETSTRIPE $file failed"
@@ -10391,7 +10792,8 @@ run_test 154f "get parent fids by reading link ea"
 
 test_154g()
 {
-	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.6.92) ]] ||
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.6.92) && \
+	   $(lustre_version_code client) -gt $(version_code 2.6.99) ]] ||
 		{ skip "Need MDS version at least 2.6.92"; return 0; }
 	[ -n "$FILESET" ] && skip "SKIP due to FILESET set" && return
 
@@ -10407,7 +10809,7 @@ test_155_small_load() {
     dd if=/dev/urandom of=$temp bs=6096 count=1 || \
         error "dd of=$temp bs=6096 count=1 failed"
     cp $temp $file
-    cancel_lru_locks osc
+    cancel_lru_locks $OSC
     cmp $temp $file || error "$temp $file differ"
 
     $TRUNCATE $temp 6000
@@ -10949,9 +11351,41 @@ test_160d() {
 }
 run_test 160d "verify that changelog log catch the migrate event"
 
+test_160e() {
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+
+	# Create a user
+	CL_USER=$(do_facet $SINGLEMDS $LCTL --device $MDT0 \
+		changelog_register -n)
+	echo "Registered as changelog user $CL_USER"
+	trap cleanup_changelog EXIT
+
+	# Delete a future user (expect fail)
+	do_facet $SINGLEMDS $LCTL --device $MDT0 changelog_deregister cl77
+	local rc=$?
+
+	if [ $rc -eq 0 ]; then
+		error "Deleted non-existant user cl77"
+	elif [ $rc -ne 2 ]; then
+		error "changelog_deregister failed with $rc, " \
+			"expected 2 (ENOENT)"
+	fi
+
+	# Clear to a bad index (1 billion should be safe)
+	$LFS changelog_clear $MDT0 $CL_USER 1000000000
+	rc=$?
+
+	if [ $rc -eq 0 ]; then
+		error "Successfully cleared to invalid CL index"
+	elif [ $rc -ne 22 ]; then
+		error "changelog_clear failed with $rc, expected 22 (EINVAL)"
+	fi
+}
+run_test 160e "changelog negative testing"
+
 test_161a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-	test_mkdir -p -c1 $DIR/$tdir
+	test_mkdir -c1 $DIR/$tdir
 	cp /etc/hosts $DIR/$tdir/$tfile
 	test_mkdir -c1 $DIR/$tdir/foo1
 	test_mkdir -c1 $DIR/$tdir/foo2
@@ -11124,6 +11558,55 @@ test_161c() {
 }
 run_test 161c "check CL_RENME[UNLINK] changelog record flags"
 
+test_161d() {
+	local user
+	local pid
+	local fid
+
+	# cleanup previous run
+	rm -rf $DIR/$tdir/$tfile
+
+	user=$(do_facet $SINGLEMDS $LCTL --device $MDT0 \
+		changelog_register -n)
+	[[ $? -eq 0 ]] || error "changelog_register failed"
+
+	# work in a standalone dir to avoid locking on $DIR/$MOUNT to
+	# interfer with $MOUNT/.lustre/fid/ access
+	mkdir $DIR/$tdir
+	[[ $? -eq 0 ]] || error "mkdir failed"
+
+	#define OBD_FAIL_LLITE_CREATE_NODE_PAUSE 0x140c | OBD_FAIL_ONCE
+	$LCTL set_param fail_loc=0x8000140c
+	# 5s pause
+	$LCTL set_param fail_val=5
+
+	# create file
+	echo foofoo > $DIR/$tdir/$tfile &
+	pid=$!
+
+	# wait for create to be delayed
+	sleep 2
+
+	ps -p $pid
+	[[ $? -eq 0 ]] || error "create should be blocked"
+
+	local tempfile=$(mktemp)
+	fid=$(changelog_extract_field $MDT0 "CREAT" "$tfile" "t=")
+	cat $MOUNT/.lustre/fid/$fid 2>/dev/null >$tempfile || error "cat failed"
+	# some delay may occur during ChangeLog publishing and file read just
+	# above, that could allow file write to happen finally
+	[[ -s $tempfile ]] && echo "file should be empty"
+
+	$LCTL set_param fail_loc=0
+
+	wait $pid
+	[[ $? -eq 0 ]] || error "create failed"
+
+	$LFS changelog_clear $MDT0 $user 0
+	do_facet $SINGLEMDS $LCTL --device $MDT0 changelog_deregister $user
+}
+run_test 161d "create with concurrent .lustre/fid access"
+
 check_path() {
     local expected=$1
     shift
@@ -11437,12 +11920,11 @@ test_180b() {
 	local rc=0
 	local rmmod_remote=0
 
-	do_facet ost1 "lsmod | grep -q obdecho || "                      \
-		      "{ insmod ${LUSTRE}/obdecho/obdecho.ko || "        \
-		      "modprobe obdecho; }" && rmmod_remote=1
+	do_rpc_nodes $(facet_active_host ost1) load_module obdecho/obdecho &&
+		rmmod_remote=true || error "failed to load module obdecho"
 	target=$(do_facet ost1 $LCTL dl | awk '/obdfilter/ {print $4;exit}')
 	[[ -n $target ]] && { obdecho_test $target ost1 || rc=1; }
-	[ $rmmod_remote -eq 1 ] && do_facet ost1 "rmmod obdecho"
+	$rmmod_remote && do_facet ost1 "rmmod obdecho"
 	return $rc
 }
 run_test 180b "test obdecho directly on obdfilter"
@@ -11475,7 +11957,7 @@ test_180c() { # LU-2598
 run_test 180c "test huge bulk I/O size on obdfilter, don't LASSERT"
 
 test_181() { # bug 22177
-	test_mkdir -p $DIR/$tdir || error "creating dir $DIR/$tdir"
+	test_mkdir $DIR/$tdir
 	# create enough files to index the directory
 	createmany -o $DIR/$tdir/foobar 4000
 	# print attributes for debug purpose
@@ -11552,7 +12034,7 @@ test_184a() {
 	check_swap_layouts_support && return 0
 
 	dir0=$DIR/$tdir/$testnum
-	test_mkdir -p -c1 $dir0 || error "creating dir $dir0"
+	test_mkdir -p -c1 $dir0
 	ref1=/etc/passwd
 	ref2=/etc/group
 	file1=$dir0/f1
@@ -11673,14 +12155,16 @@ test_184d() {
 		error "create $file2 failed"
 	$OPENFILE -f O_CREAT:O_LOV_DELAY_CREATE $file3 ||
 		error "create $file3 failed"
-	lovea1=$($LFS getstripe $file1 | sed 1d)
+	lovea1=$(get_layout_param $file1)
 
 	$LFS swap_layouts $file2 $file3 ||
 		error "swap $file2 $file3 layouts failed"
 	$LFS swap_layouts $file1 $file2 ||
 		error "swap $file1 $file2 layouts failed"
 
-	lovea2=$($LFS getstripe $file2 | sed 1d)
+	lovea2=$(get_layout_param $file2)
+	echo "$lovea1"
+	echo "$lovea2"
 	[ "$lovea1" == "$lovea2" ] || error "lovea $lovea1 != $lovea2"
 
 	lovea1=$(getfattr -n trusted.lov $file1 | grep ^trusted)
@@ -11817,8 +12301,12 @@ test_200() {
 	local test_path=$POOL_ROOT/$POOL_DIR_NAME
 	local file_dir=$POOL_ROOT/file_tst
 	local subdir=$test_path/subdir
-
 	local rc=0
+
+	if ! combined_mgs_mds ; then
+		mount_mgs_client
+	fi
+
 	while : ; do
 		# former test_200a test_200b
 		pool_add $POOL				|| { rc=$? ; break; }
@@ -11838,7 +12326,7 @@ test_200() {
 		pool_create_files $POOL $file_dir $files "$ost_list" \
 							|| { rc=$? ; break; }
 		# former test_200g test_200h
-		pool_lfs_df $POOL 			|| { rc=$? ; break; }
+		pool_lfs_df $POOL			|| { rc=$? ; break; }
 		pool_file_rel_path $POOL $test_path	|| { rc=$? ; break; }
 
 		# former test_201a test_201b test_201c
@@ -11846,11 +12334,15 @@ test_200() {
 
 		local f=$test_path/$tfile
 		pool_remove_all_targets $POOL $f	|| { rc=$? ; break; }
-		pool_remove $POOL $f 			|| { rc=$? ; break; }
+		pool_remove $POOL $f			|| { rc=$? ; break; }
 		break
 	done
 
-	cleanup_pools
+	destroy_test_pools
+
+	if ! combined_mgs_mds ; then
+		umount_mgs_client
+	fi
 	return $rc
 }
 run_test 200 "OST pools"
@@ -11864,109 +12356,93 @@ default_attr() {
 check_default_stripe_attr() {
 	ACTUAL=$($GETSTRIPE $* $DIR/$tdir)
 	case $1 in
-	--stripe-count|--count)
+	--stripe-count|-c)
 		[ -n "$2" ] && EXPECTED=0 || EXPECTED=$(default_attr count);;
-	--stripe-size|--size)
+	--stripe-size|-S)
 		[ -n "$2" ] && EXPECTED=0 || EXPECTED=$(default_attr size);;
-	--stripe-index|--index)
+	--stripe-index|-i)
 		EXPECTED=-1;;
 	*)
 		error "unknown getstripe attr '$1'"
 	esac
 
-	[ $ACTUAL != $EXPECTED ] &&
+	[ $ACTUAL == $EXPECTED ] ||
 		error "$DIR/$tdir has $1 '$ACTUAL', not '$EXPECTED'"
 }
 
 test_204a() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-count 0 --stripe-size 0 --stripe-index -1 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count
 	check_default_stripe_attr --stripe-size
 	check_default_stripe_attr --stripe-index
-
-	return 0
 }
-run_test 204a "Print default stripe attributes ================="
+run_test 204a "Print default stripe attributes"
 
 test_204b() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-count 1 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-size
 	check_default_stripe_attr --stripe-index
-
-	return 0
 }
-run_test 204b "Print default stripe size and offset  ==========="
+run_test 204b "Print default stripe size and offset"
 
 test_204c() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-size 65536 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count
 	check_default_stripe_attr --stripe-index
-
-	return 0
 }
-run_test 204c "Print default stripe count and offset ==========="
+run_test 204c "Print default stripe count and offset"
 
 test_204d() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-index 0 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count
 	check_default_stripe_attr --stripe-size
-
-	return 0
 }
-run_test 204d "Print default stripe count and size ============="
+run_test 204d "Print default stripe count and size"
 
 test_204e() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE -d $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count --raw
 	check_default_stripe_attr --stripe-size --raw
 	check_default_stripe_attr --stripe-index --raw
-
-	return 0
 }
-run_test 204e "Print raw stripe attributes ================="
+run_test 204e "Print raw stripe attributes"
 
 test_204f() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-count 1 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-size --raw
 	check_default_stripe_attr --stripe-index --raw
-
-	return 0
 }
-run_test 204f "Print raw stripe size and offset  ==========="
+run_test 204f "Print raw stripe size and offset"
 
 test_204g() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-size 65536 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count --raw
 	check_default_stripe_attr --stripe-index --raw
-
-	return 0
 }
-run_test 204g "Print raw stripe count and offset ==========="
+run_test 204g "Print raw stripe count and offset"
 
 test_204h() {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	$SETSTRIPE --stripe-index 0 $DIR/$tdir
 
 	check_default_stripe_attr --stripe-count --raw
 	check_default_stripe_attr --stripe-size --raw
-
-	return 0
 }
-run_test 204h "Print raw stripe count and size ============="
+run_test 204h "Print raw stripe count and size"
 
 # Figure out which job scheduler is being used, if any,
 # or use a fake one
@@ -12050,6 +12526,9 @@ cleanup_205() {
 }
 
 test_205() { # Job stats
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.7.1) ]] ||
+		{ skip "Need MDS version with at least 2.7.1"; return 0; }
+
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mgs_nodsh && skip "remote MGS with nodsh" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
@@ -12304,16 +12783,12 @@ run_test 214 "hash-indexed directory test - bug 20133"
 
 # having "abc" as 1st arg, creates $TMP/lnet_abc.out and $TMP/lnet_abc.sys
 create_lnet_proc_files() {
-	lctl get_param -n $1 >$TMP/lnet_$1.out || error "cannot read lnet.$1"
-	sysctl lnet.$1 >$TMP/lnet_$1.sys_tmp || error "cannot read lnet.$1"
-
-	sed "s/^lnet.$1\ =\ //g" "$TMP/lnet_$1.sys_tmp" >$TMP/lnet_$1.sys
-	rm -f "$TMP/lnet_$1.sys_tmp"
+	lctl get_param -n $1 >$TMP/lnet_$1.sys || error "cannot read lnet.$1"
 }
 
 # counterpart of create_lnet_proc_files
 remove_lnet_proc_files() {
-	rm -f $TMP/lnet_$1.out $TMP/lnet_$1.sys
+	rm -f $TMP/lnet_$1.sys
 }
 
 # uses 1st arg as trailing part of filename, 2nd arg as description for reports,
@@ -12423,7 +12898,6 @@ test_215() { # for bugs 18102, 21079, 21517
 
 	# can we successfully write to lnet.stats?
 	lctl set_param -n stats=0 || error "cannot write to lnet.stats"
-	sysctl -w lnet.stats=0 || error "cannot write to lnet.stats"
 }
 run_test 215 "lnet exists and has proper content - bugs 18102, 21079, 21517"
 
@@ -12442,32 +12916,34 @@ test_216() { # bug 20317
 		"ldlm.namespaces.filter-*.contended_locks" >> $p
 	save_lustre_params $facets \
 		"ldlm.namespaces.filter-*.contention_seconds" >> $p
-	clear_osc_stats
+	clear_stats osc.*.osc_stats
 
-        # agressive lockless i/o settings
-        for node in $(osts_nodes); do
-                do_node $node 'lctl set_param -n ldlm.namespaces.filter-*.max_nolock_bytes 2000000; lctl set_param -n ldlm.namespaces.filter-*.contended_locks 0; lctl set_param -n ldlm.namespaces.filter-*.contention_seconds 60'
-        done
-        lctl set_param -n osc.*.contention_seconds 60
+	# agressive lockless i/o settings
+	do_nodes $(comma_list $(osts_nodes)) \
+		"lctl set_param -n ldlm.namespaces.*.max_nolock_bytes=2000000 \
+			ldlm.namespaces.filter-*.contended_locks=0 \
+			ldlm.namespaces.filter-*.contention_seconds=60"
+	lctl set_param -n osc.*.contention_seconds=60
 
-        $DIRECTIO write $DIR/$tfile 0 10 4096
-        $CHECKSTAT -s 40960 $DIR/$tfile
+	$DIRECTIO write $DIR/$tfile 0 10 4096
+	$CHECKSTAT -s 40960 $DIR/$tfile
 
-        # disable lockless i/o
-        for node in $(osts_nodes); do
-                do_node $node 'lctl set_param -n ldlm.namespaces.filter-*.max_nolock_bytes 0; lctl set_param -n ldlm.namespaces.filter-*.contended_locks 32; lctl set_param -n ldlm.namespaces.filter-*.contention_seconds 0'
-        done
-        lctl set_param -n osc.*.contention_seconds 0
-        clear_osc_stats
+	# disable lockless i/o
+	do_nodes $(comma_list $(osts_nodes)) \
+		"lctl set_param -n ldlm.namespaces.filter-*.max_nolock_bytes=0 \
+			ldlm.namespaces.filter-*.contended_locks=32 \
+			ldlm.namespaces.filter-*.contention_seconds=0"
+	lctl set_param -n osc.*.contention_seconds=0
+	clear_stats osc.*.osc_stats
 
-        dd if=/dev/zero of=$DIR/$tfile count=0
-        $CHECKSTAT -s 0 $DIR/$tfile
+	dd if=/dev/zero of=$DIR/$tfile count=0
+	$CHECKSTAT -s 0 $DIR/$tfile
 
-        restore_lustre_params <$p
-        rm -f $p
-        rm $DIR/$tfile
+	restore_lustre_params <$p
+	rm -f $p
+	rm $DIR/$tfile
 }
-run_test 216 "check lockless direct write works and updates file size and kms correctly"
+run_test 216 "check lockless direct write updates file size and kms correctly"
 
 test_217() { # bug 22430
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
@@ -12477,8 +12953,8 @@ test_217() { # bug 22430
 	for node in $(nodes_list); do
 		nid=$(host_nids_address $node $NETTYPE)
 		if [[ $nid = *-* ]] ; then
-			echo "lctl ping $nid@$NETTYPE"
-			lctl ping $nid@$NETTYPE
+			echo "lctl ping $(h2nettype $nid)"
+			lctl ping $(h2nettype $nid)
 		else
 			echo "skipping $node (no hyphen detected)"
 		fi
@@ -12544,10 +13020,14 @@ test_220() { #LU-325
 
 	$LFS df -i
 
+	if ! combined_mgs_mds ; then
+		mount_mgs_client
+	fi
+
 	do_facet ost$((OSTIDX + 1)) lctl set_param fail_val=-1
 	#define OBD_FAIL_OST_ENOINO              0x229
 	do_facet ost$((OSTIDX + 1)) lctl set_param fail_loc=0x229
-	do_facet mgs $LCTL pool_new $FSNAME.$TESTNAME || return 1
+	create_pool $FSNAME.$TESTNAME || return 1
 	do_facet mgs $LCTL pool_add $FSNAME.$TESTNAME $OST || return 2
 
 	$SETSTRIPE $DIR/$tdir -i $OSTIDX -c 1 -p $FSNAME.$TESTNAME
@@ -12574,10 +13054,16 @@ test_220() { #LU-325
 	do_facet ost$((OSTIDX + 1)) lctl set_param fail_val=0
 	do_facet ost$((OSTIDX + 1)) lctl set_param fail_loc=0
 
-	do_facet mgs $LCTL pool_remove $FSNAME.$TESTNAME $OST || return 4
-	do_facet mgs $LCTL pool_destroy $FSNAME.$TESTNAME || return 5
+	do_facet mgs $LCTL pool_remove $FSNAME.$TESTNAME $OST ||
+		error "$LCTL pool_remove $FSNAME.$TESTNAME $OST failed"
+	do_facet mgs $LCTL pool_destroy $FSNAME.$TESTNAME ||
+		error "$LCTL pool_destroy $FSNAME.$TESTNAME failed"
 	echo "unlink $MDSOBJS files @$next_id..."
-	unlinkmany $DIR/$tdir/f $MDSOBJS || return 6
+	unlinkmany $DIR/$tdir/f $MDSOBJS || error "unlinkmany failed"
+
+	if ! combined_mgs_mds ; then
+		umount_mgs_client
+	fi
 }
 run_test 220 "preallocated MDS objects still used if ENOSPC from OST"
 
@@ -12596,25 +13082,25 @@ run_test 221 "make sure fault and truncate race to not cause OOM"
 
 test_222a () {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-       rm -rf $DIR/$tdir
-       test_mkdir -p $DIR/$tdir
-       $SETSTRIPE -c 1 -i 0 $DIR/$tdir
-       createmany -o $DIR/$tdir/$tfile 10
-       cancel_lru_locks mdc
-       cancel_lru_locks osc
-       #define OBD_FAIL_LDLM_AGL_DELAY           0x31a
-       $LCTL set_param fail_loc=0x31a
-       ls -l $DIR/$tdir > /dev/null || error "AGL for ls failed"
-       $LCTL set_param fail_loc=0
-       rm -r $DIR/$tdir
+	rm -rf $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 1 -i 0 $DIR/$tdir
+	createmany -o $DIR/$tdir/$tfile 10
+	cancel_lru_locks mdc
+	cancel_lru_locks osc
+	#define OBD_FAIL_LDLM_AGL_DELAY           0x31a
+	$LCTL set_param fail_loc=0x31a
+	ls -l $DIR/$tdir > /dev/null || error "AGL for ls failed"
+	$LCTL set_param fail_loc=0
+	rm -r $DIR/$tdir
 }
-run_test 222a "AGL for ls should not trigger CLIO lock failure ================"
+run_test 222a "AGL for ls should not trigger CLIO lock failure"
 
 test_222b () {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	rm -rf $DIR/$tdir
-	test_mkdir -p $DIR/$tdir
-	$SETSTRIPE -c 1 -i 0 $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 1 -i 0 $DIR/$tdir
 	createmany -o $DIR/$tdir/$tfile 10
 	cancel_lru_locks mdc
 	cancel_lru_locks osc
@@ -12623,21 +13109,21 @@ test_222b () {
 	rm -r $DIR/$tdir || error "AGL for rmdir failed"
 	$LCTL set_param fail_loc=0
 }
-run_test 222b "AGL for rmdir should not trigger CLIO lock failure ============="
+run_test 222b "AGL for rmdir should not trigger CLIO lock failure"
 
 test_223 () {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
-       rm -rf $DIR/$tdir
-       test_mkdir -p $DIR/$tdir
-       $SETSTRIPE -c 1 -i 0 $DIR/$tdir
-       createmany -o $DIR/$tdir/$tfile 10
-       cancel_lru_locks mdc
-       cancel_lru_locks osc
-       #define OBD_FAIL_LDLM_AGL_NOLOCK          0x31b
-       $LCTL set_param fail_loc=0x31b
-       ls -l $DIR/$tdir > /dev/null || error "reenqueue failed"
-       $LCTL set_param fail_loc=0
-       rm -r $DIR/$tdir
+	rm -rf $DIR/$tdir
+	test_mkdir $DIR/$tdir
+	$LFS setstripe -c 1 -i 0 $DIR/$tdir
+	createmany -o $DIR/$tdir/$tfile 10
+	cancel_lru_locks mdc
+	cancel_lru_locks osc
+	#define OBD_FAIL_LDLM_AGL_NOLOCK          0x31b
+	$LCTL set_param fail_loc=0x31b
+	ls -l $DIR/$tdir > /dev/null || error "reenqueue failed"
+	$LCTL set_param fail_loc=0
+	rm -r $DIR/$tdir
 }
 run_test 223 "osc reenqueue if without AGL lock granted ======================="
 
@@ -12749,8 +13235,6 @@ test_225b () {
 	      skip_env "Need to mount OST to test" && return
 	fi
 
-	[ $MDSCOUNT -ge 2 ] &&
-		skip "skipping now for more than one MDT" && return
        local mds=$(facet_host $SINGLEMDS)
        local target=$(do_nodes $mds 'lctl dl' | \
                       awk "{if (\$2 == \"UP\" && \$3 == \"mdt\") {print \$4}}")
@@ -12852,7 +13336,7 @@ test_228a() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[ "$(facet_fstype $SINGLEMDS)" != "ldiskfs" ] &&
-		skip "non-ldiskfs backend" && return
+		skip "ldiskfs only test" && return
 
 	local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
 	local myDIR=$DIR/$tdir
@@ -12894,7 +13378,7 @@ test_228b() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[ "$(facet_fstype $SINGLEMDS)" != "ldiskfs" ] &&
-		skip "non-ldiskfs backend" && return
+		skip "ldiskfs only test" && return
 
 	local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
 	local myDIR=$DIR/$tdir
@@ -12944,7 +13428,7 @@ test_228c() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[ "$(facet_fstype $SINGLEMDS)" != "ldiskfs" ] &&
-		skip "non-ldiskfs backend" && return
+		skip "ldiskfs only test" && return
 
 	local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
 	local myDIR=$DIR/$tdir
@@ -13446,8 +13930,12 @@ test_231a()
 	# is the same across all OSCs
 	local max_pages=$($LCTL get_param -n osc.*.max_pages_per_rpc | head -n1)
 	local bulk_size=$((max_pages * 4096))
+	local brw_size=$(do_facet ost1 $LCTL get_param -n obdfilter.*.brw_size |
+				       head -n 1)
 
 	mkdir -p $DIR/$tdir
+	$LFS setstripe -S ${brw_size}M $DIR/$tdir ||
+		error "failed to set stripe with -S ${brw_size}M option"
 
 	# clear the OSC stats
 	$LCTL set_param osc.*.stats=0 &>/dev/null
@@ -13583,7 +14071,7 @@ run_test 235 "LU-1715: flock deadlock detection does not work properly"
 #LU-2935
 test_236() {
 	check_swap_layouts_support && return 0
-	test_mkdir -p -c1 $DIR/$tdir || error "mkdir $tdir failed"
+	test_mkdir -c1 $DIR/$tdir
 
 	local ref1=/etc/passwd
 	local ref2=/etc/group
@@ -13653,9 +14141,10 @@ test_239() {
 	mkdir -p $DIR/$tdir
 	createmany -o $DIR/$tdir/f- 5000
 	unlinkmany $DIR/$tdir/f- 5000
-	do_nodes $list "lctl set_param -n osp*.*.sync_changes 1"
-	changes=$(do_nodes $list "lctl get_param -n osc.*MDT*.sync_changes \
-			osc.*MDT*.sync_in_flight" | calc_sum)
+	[ $(lustre_version_code $SINGLEMDS) -gt $(version_code 2.10.53) ] &&
+		do_nodes $list "lctl set_param -n osp.*.force_sync=1"
+	changes=$(do_nodes $list "lctl get_param -n osp.*MDT*.sync_changes \
+			osp.*MDT*.sync_in_flight" | calc_sum)
 	[ "$changes" -eq 0 ] || error "$changes not synced"
 }
 run_test 239 "osp_sync test"
@@ -13708,7 +14197,7 @@ run_test 240 "race between ldlm enqueue and the connection RPC (no ASSERT)"
 test_241_bio() {
 	for LOOP in $(seq $1); do
 		dd if=$DIR/$tfile of=/dev/null bs=40960 count=1 2>/dev/null
-		cancel_lru_locks osc || true
+		cancel_lru_locks $OSC || true
 	done
 }
 
@@ -13722,7 +14211,7 @@ test_241_dio() {
 test_241a() { # was test_241
 	dd if=/dev/zero of=$DIR/$tfile count=1 bs=40960
 	ls -la $DIR/$tfile
-	cancel_lru_locks osc
+	cancel_lru_locks $OSC
 	test_241_bio 1000 &
 	PID=$!
 	test_241_dio 1000
@@ -13756,14 +14245,14 @@ run_test 242 "mdt_readpage failure should not cause directory unreadable"
 
 test_243()
 {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	group_lock_test -d $DIR/$tdir || error "A group lock test failed"
 }
 run_test 243 "various group lock tests"
 
 test_244()
 {
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	dd if=/dev/zero of=$DIR/$tdir/$tfile bs=1M count=35
 	sendfile_grouplock $DIR/$tdir/$tfile || \
 		error "sendfile+grouplock failed"
@@ -14000,7 +14489,7 @@ test_252() {
 	remote_ost_nodsh && skip "remote OST with nodsh" && return
 	if [ "$(facet_fstype ost1)" != "ldiskfs" -o \
 	     "$(facet_fstype mds1)" != "ldiskfs" ]; then
-		skip "can only run lr_reader on ldiskfs target"
+		skip "ldiskfs only test"
 		return
 	fi
 
@@ -14076,8 +14565,8 @@ test_253() {
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	remote_mgs_nodsh && skip "remote MGS with nodsh" && return
 
-	local ost_name=$($LFS osts | grep ${ostidx}": " | \
-		awk '{print $2}' | sed -e 's/_UUID$//')
+	local ost_name=$($LFS osts |
+		sed -n 's/^'$ostidx': \(.*\)_UUID .*/\1/p')
 	# on the mdt's osc
 	local mdtosc_proc1=$(get_mdtosc_proc_path $SINGLEMDS $ost_name)
 	do_facet $SINGLEMDS $LCTL get_param -n \
@@ -14096,8 +14585,10 @@ test_253() {
 			osp.$mdtosc_proc1.reserved_mb_low)
 	echo "prev high watermark $last_wm_h, prev low watermark $last_wm_l"
 
-	do_facet mgs $LCTL pool_new $FSNAME.$TESTNAME ||
-		error "Pool creation failed"
+	if ! combined_mgs_mds ; then
+		mount_mgs_client
+	fi
+	create_pool $FSNAME.$TESTNAME || error "Pool creation failed"
 	do_facet mgs $LCTL pool_add $FSNAME.$TESTNAME $ost_name ||
 		error "Adding $ost_name to pool failed"
 
@@ -14161,6 +14652,10 @@ test_253() {
 		error "Remove $ost_name from pool failed"
 	do_facet mgs $LCTL pool_destroy $FSNAME.$TESTNAME ||
 		error "Pool destroy fialed"
+
+	if ! combined_mgs_mds ; then
+		umount_mgs_client
+	fi
 }
 run_test 253 "Check object allocation limit"
 
@@ -14235,68 +14730,94 @@ ladvise_no_ioctl()
 	return 1
 }
 
-ladvise_willread_performance()
-{
-	local repeat=10
-	local average_cache=0
-	local average_ladvise=0
+percent() {
+	bc <<<"scale=2; ($1 - $2) * 100 / $2"
+}
 
-	for ((i = 1; i <= $repeat; i++)); do
+# run a random read IO workload
+# usage: random_read_iops <filename> <filesize> <iosize>
+random_read_iops() {
+	local file=$1
+	local fsize=$2
+	local iosize=${3:-4096}
+
+	$READS -f $file -s $fsize -b $iosize -n $((fsize / iosize)) -t 60 |
+		sed -e '/^$/d' -e 's#.*s, ##' -e 's#MB/s##'
+}
+
+drop_file_oss_cache() {
+	local file="$1"
+	local nodes="$2"
+
+	$LFS ladvise -a dontneed $file 2>/dev/null ||
+		do_nodes $nodes "echo 3 > /proc/sys/vm/drop_caches"
+}
+
+ladvise_willread_performance()
+{
+	local repeat=10
+	local average_origin=0
+	local average_cache=0
+	local average_ladvise=0
+
+	for ((i = 1; i <= $repeat; i++)); do
 		echo "Iter $i/$repeat: reading without willread hint"
 		cancel_lru_locks osc
-		do_nodes $(comma_list $(osts_nodes)) \
-			"echo 3 > /proc/sys/vm/drop_caches"
-		local speed_origin=$($READS -f $DIR/$tfile -s $size \
-			-b 4096 -n $((size / 4096)) -t 60 |
-			sed -e '/^$/d' -e 's#.*s, ##' -e 's#MB/s##')
+		drop_file_oss_cache $DIR/$tfile $(comma_list $(osts_nodes))
+		local speed_origin=$(random_read_iops $DIR/$tfile $size)
+		echo "Iter $i/$repeat: uncached speed: $speed_origin"
+		average_origin=$(bc <<<"$average_origin + $speed_origin")
 
-		echo "Iter $i/$repeat: Reading again without willread hint"
 		cancel_lru_locks osc
-		local speed_cache=$($READS -f $DIR/$tfile -s $size \
-			-b 4096 -n $((size / 4096)) -t 60 |
-			sed -e '/^$/d' -e 's#.*s, ##' -e 's#MB/s##')
+		local speed_cache=$(random_read_iops $DIR/$tfile $size)
+		echo "Iter $i/$repeat: OSS cache speed: $speed_cache"
+		average_cache=$(bc <<<"$average_cache + $speed_cache")
 
-		echo "Iter $i/$repeat: reading with willread hint"
 		cancel_lru_locks osc
-		do_nodes $(comma_list $(osts_nodes)) \
-			"echo 3 > /proc/sys/vm/drop_caches"
-		lfs ladvise -a willread $DIR/$tfile ||
-			error "Ladvise failed"
-		local speed_ladvise=$($READS -f $DIR/$tfile -s $size \
-			-b 4096 -n $((size / 4096)) -t 60 |
-			sed -e '/^$/d' -e 's#.*s, ##' -e 's#MB/s##')
-
-		local cache_speedup=$(echo "scale=2; \
-			($speed_cache-$speed_origin)/$speed_origin*100" | bc)
-		cache_speedup=$(echo ${cache_speedup%.*})
-		echo "Iter $i/$repeat: cache speedup: $cache_speedup%"
-		average_cache=$((average_cache + cache_speedup))
-
-		local ladvise_speedup=$(echo "scale=2; \
-			($speed_ladvise-$speed_origin)/$speed_origin*100" | bc)
-		ladvise_speedup=$(echo ${ladvise_speedup%.*})
-		echo "Iter $i/$repeat: ladvise speedup: $ladvise_speedup%"
-		average_ladvise=$((average_ladvise + ladvise_speedup))
-	done
-	average_cache=$((average_cache / repeat))
-	average_ladvise=$((average_ladvise / repeat))
-
-	if [ $average_cache -lt 20 ]; then
-		echo "Speedup with cache is less than 20% ($average_cache%),"\
-			"skipping check of speedup with willread:"\
-			"$average_ladvise%"
+		drop_file_oss_cache $DIR/$tfile $(comma_list $(osts_nodes))
+		$LFS ladvise -a willread $DIR/$tfile || error "ladvise failed"
+		local speed_ladvise=$(random_read_iops $DIR/$tfile $size)
+		echo "Iter $i/$repeat: ladvise speed: $speed_ladvise"
+		average_ladvise=$(bc <<<"$average_ladvise + $speed_ladvise")
+	done
+	average_origin=$(bc <<<"scale=2; $average_origin / $repeat")
+	average_cache=$(bc <<<"scale=2; $average_cache / $repeat")
+	average_ladvise=$(bc <<<"scale=2; $average_ladvise / $repeat")
+
+	speedup_cache=$(percent $average_cache $average_origin)
+	speedup_ladvise=$(percent $average_ladvise $average_origin)
+
+	echo "Average uncached read: $average_origin"
+	echo "Average speedup with OSS cached read: " \
+		"$average_cache = +$speedup_cache%"
+	echo "Average speedup with ladvise willread: " \
+		"$average_ladvise = +$speedup_ladvise%"
+
+	local lowest_speedup=20
+	if [ ${average_cache%.*} -lt $lowest_speedup ]; then
+		echo "Speedup with OSS cached read less than $lowest_speedup%, "
+			"got $average_cache%. Skipping ladvise willread check."
 		return 0
 	fi
 
-	local lowest_speedup=$((average_cache / 2))
-	[ $average_ladvise -gt $lowest_speedup ] ||
+	# the test won't work on ZFS until it supports 'ladvise dontneed', but
+	# it is still good to run until then to exercise 'ladvise willread'
+	! $LFS ladvise -a dontneed $DIR/$tfile &&
+		[ "$(facet_fstype ost1)" = "zfs" ] &&
+		echo "osd-zfs does not support dontneed or drop_caches" &&
+		return 0
+
+	lowest_speedup=$(bc <<<"scale=2; $average_cache / 2")
+	[ ${average_ladvise%.*} -gt $lowest_speedup ] ||
 		error_not_in_vm "Speedup with willread is less than " \
-			   "$lowest_speedup%, got $average_ladvise%"
-	echo "Speedup with willread ladvise: $average_ladvise%"
-	echo "Speedup with cache: $average_cache%"
+			"$lowest_speedup%, got $average_ladvise%"
 }
 
 test_255a() {
+	[ $(lustre_version_code ost1) -lt $(version_code 2.8.54) ] &&
+		skip "lustre < 2.8.54 does not support ladvise " && return
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
 	lfs setstripe -c -1 -i 0 $DIR/$tfile || error "$tfile failed"
 
 	ladvise_no_type willread $DIR/$tfile &&
@@ -14305,9 +14826,6 @@ test_255a() {
 	ladvise_no_ioctl $DIR/$tfile &&
 		skip "ladvise ioctl is not supported" && return
 
-	[ $(lustre_version_code ost1) -lt $(version_code 2.8.54) ] &&
-		skip "lustre < 2.8.54 does not support ladvise " && return
-
 	local size_mb=100
 	local size=$((size_mb * 1048576))
 	dd if=/dev/zero of=$DIR/$tfile bs=1048576 count=$size_mb ||
@@ -14383,6 +14901,10 @@ facet_meminfo() {
 }
 
 test_255b() {
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
+	lfs setstripe -c 1 -i 0 $DIR/$tfile
+
 	ladvise_no_type dontneed $DIR/$tfile &&
 		skip "dontneed ladvise is not supported" && return
 
@@ -14392,10 +14914,9 @@ test_255b() {
 	[ $(lustre_version_code ost1) -lt $(version_code 2.8.54) ] &&
 		skip "lustre < 2.8.54 does not support ladvise" && return
 
-	[ "$(facet_fstype ost1)" = "zfs" ] &&
-		skip "zfs-osd does not support dontneed advice" && return
-
-	lfs setstripe -c 1 -i 0 $DIR/$tfile
+	! $LFS ladvise -a dontneed $DIR/$tfile &&
+		[ "$(facet_fstype ost1)" = "zfs" ] &&
+		skip "zfs-osd does not support 'ladvise dontneed'" && return
 
 	local size_mb=100
 	local size=$((size_mb * 1048576))
@@ -14440,6 +14961,87 @@ test_255b() {
 }
 run_test 255b "check 'lfs ladvise -a dontneed'"
 
+test_255c() {
+	local count
+	local new_count
+	local difference
+	local i
+	local rc
+	test_mkdir -p $DIR/$tdir
+	$SETSTRIPE -i 0 $DIR/$tdir
+
+	#test 10 returns only success/failure
+	i=10
+	lockahead_test -d $DIR/$tdir -t $i
+	rc=$?
+	if [ $rc -eq 255 ]; then
+		error "Ladvise test${i} failed, ${rc}"
+	fi
+
+	#test 11 counts lock enqueue requests, all others count new locks
+	i=11
+	count=$(do_facet ost1 \
+		$LCTL get_param -n ost.OSS.ost.stats)
+	count=$(echo "$count" | grep ldlm_extent_enqueue | awk '{ print $2 }')
+
+	lockahead_test -d $DIR/$tdir -t $i
+	rc=$?
+	if [ $rc -eq 255 ]; then
+		error "Ladvise test${i} failed, ${rc}"
+	fi
+
+	new_count=$(do_facet ost1 \
+		$LCTL get_param -n ost.OSS.ost.stats)
+	new_count=$(echo "$new_count" | grep ldlm_extent_enqueue | \
+		   awk '{ print $2 }')
+
+	difference="$((new_count - count))"
+	if [ $difference -ne $rc ]; then
+		error "Ladvise test${i}, bad enqueue count, returned " \
+		      "${rc}, actual ${difference}"
+	fi
+
+	for i in $(seq 12 21); do
+		# If we do not do this, we run the risk of having too many
+		# locks and starting lock cancellation while we are checking
+		# lock counts.
+		cancel_lru_locks osc
+
+		count=$($LCTL get_param -n \
+		       ldlm.namespaces.$FSNAME-OST0000*osc-f*.lock_unused_count)
+
+		lockahead_test -d $DIR/$tdir -t $i
+		rc=$?
+		if [ $rc -eq 255 ]; then
+			error "Ladvise test ${i} failed, ${rc}"
+		fi
+
+		new_count=$($LCTL get_param -n \
+		       ldlm.namespaces.$FSNAME-OST0000*osc-f*.lock_unused_count)
+		difference="$((new_count - count))"
+
+		# Test 15 output is divided by 1000 to map down to valid return
+		if [ $i -eq 15 ]; then
+			rc="$((rc * 1000))"
+		fi
+
+		if [ $difference -ne $rc ]; then
+			error "Ladvise test ${i}, bad lock count, returned " \
+			      "${rc}, actual ${difference}"
+		fi
+	done
+
+	#test 22 returns only success/failure
+	i=22
+	lockahead_test -d $DIR/$tdir -t $i
+	rc=$?
+	if [ $rc -eq 255 ]; then
+		error "Ladvise test${i} failed, ${rc}"
+	fi
+
+}
+run_test 255c "suite of ladvise lockahead tests"
+
 test_256() {
 	local cl_user
 	local cat_sl
@@ -14448,7 +15050,7 @@ test_256() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	[ "$(facet_fstype mds1)" != "ldiskfs" ] &&
-		skip "non-ldiskfs backend" && return
+		skip "ldiskfs only test" && return
 
 	mdt_dev=$(mdsdevname 1)
 	echo $mdt_dev
@@ -14478,9 +15080,12 @@ test_256() {
 
 	#after mount new plainllog is used
 	touch $DIR/$tdir/{11..19}
+	do_facet mds1 sync
+	local TEMP256FILE=$(mktemp -u TEMP256XXXXXX)
 	cat_sl=$(do_facet mds1 \
-	"$DEBUGFS -R \\\"dump changelog_catalog cat.dmp\\\" $mdt_dev; \
-	 llog_reader cat.dmp | grep \\\"type=1064553b\\\" | wc -l")
+	"$DEBUGFS -R \\\"dump changelog_catalog $TEMP256FILE\\\" $mdt_dev; \
+	 llog_reader $TEMP256FILE | grep \\\"type=1064553b\\\" | wc -l")
+	do_facet mds1 rm $TEMP256FILE
 
 	if (( cat_sl != 2 )); then
 		do_facet mds1 $LCTL --device $MDT0 changelog_deregister $cl_user
@@ -14489,9 +15094,12 @@ test_256() {
 
 	$LFS changelog_clear $MDT0 $cl_user 0
 
+	do_facet mds1 sync
+	TEMP256FILE=$(mktemp -u TEMP256XXXXXX)
 	cat_sl=$(do_facet mds1 \
-	"$DEBUGFS -R \\\"dump changelog_catalog cat.dmp\\\" $mdt_dev; \
-	 llog_reader cat.dmp | grep \\\"type=1064553b\\\" | wc -l")
+	"$DEBUGFS -R \\\"dump changelog_catalog $TEMP256FILE\\\" $mdt_dev; \
+	 llog_reader $TEMP256FILE | grep \\\"type=1064553b\\\" | wc -l")
+	do_facet mds1 rm $TEMP256FILE
 
 	do_facet mds1 $LCTL --device $MDT0 changelog_deregister $cl_user
 
@@ -14509,7 +15117,7 @@ test_257() {
 	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.55) ]] &&
 		skip "Need MDS version at least 2.8.55" && return
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 
 	setfattr -n trusted.name1 -v value1 $DIR/$tdir ||
 		error "setfattr -n trusted.name1=value1 $DIR/$tdir failed"
@@ -14527,6 +15135,39 @@ test_257() {
 }
 run_test 257 "xattr locks are not lost"
 
+# Verify we take the i_mutex when security requires it
+test_258a() {
+#define OBD_FAIL_IMUTEX_SEC 0x141c
+	$LCTL set_param fail_loc=0x141c
+	touch $DIR/$tfile
+	chmod u+s $DIR/$tfile
+	chmod a+rwx $DIR/$tfile
+	$RUNAS dd if=/dev/zero of=$DIR/$tfile bs=4k count=1 oflag=append
+	RC=$?
+	if [ $RC -ne 0 ]; then
+		error "error, failed to take i_mutex, rc=$?"
+	fi
+	rm -f $DIR/$tfile
+}
+run_test 258a
+
+# Verify we do NOT take the i_mutex in the normal case
+test_258b() {
+#define OBD_FAIL_IMUTEX_NOSEC 0x141d
+	$LCTL set_param fail_loc=0x141d
+	touch $DIR/$tfile
+	chmod a+rwx $DIR
+	chmod a+rw $DIR/$tfile
+	$RUNAS dd if=/dev/zero of=$DIR/$tfile bs=4k count=1 oflag=append
+	RC=$?
+	if [ $RC -ne 0 ]; then
+		error "error, took i_mutex unnecessarily, rc=$?"
+	fi
+	rm -f $DIR/$tfile
+
+}
+run_test 258b "verify i_mutex security behavior"
+
 test_260() {
 #define OBD_FAIL_MDC_CLOSE               0x806
 	$LCTL set_param fail_loc=0x80000806
@@ -14535,6 +15176,370 @@ test_260() {
 }
 run_test 260 "Check mdc_close fail"
 
+### Data-on-MDT sanity tests ###
+test_270a() {
+	# create DoM file
+	local dom=$DIR/$tdir/dom_file
+	local tmp=$DIR/$tdir/tmp_file
+
+	mkdir -p $DIR/$tdir
+
+	# basic checks for DoM component creation
+	$LFS setstripe -E 1024K -E 1024K -L mdt $dom 2>/dev/null &&
+		error "Can set MDT layout to non-first entry"
+
+	$LFS setstripe -E 1024K -L mdt -E 1024K -L mdt $dom 2>/dev/null &&
+		error "Can define multiple entries as MDT layout"
+
+	$LFS setstripe -E 1M -L mdt $dom ||
+		error "Can't create DoM layout"
+
+	[ $($LFS getstripe -L $dom) == 100 ] || error "bad pattern"
+	[ $($LFS getstripe -c $dom) == 0 ] || error "bad stripe count"
+	[ $($LFS getstripe -S $dom) == 1048576 ] || error "bad stripe size"
+
+	local mdtidx=$($GETSTRIPE -M $dom)
+	local mdtname=MDT$(printf %04x $mdtidx)
+	local facet=mds$((mdtidx + 1))
+	local space_check=1
+
+	# Skip free space checks with ZFS
+	if [ "$(facet_fstype $facet)" == "zfs" ]; then
+		space_check=0
+	fi
+
+	# write
+	sync
+	local mdtfree1=$(do_facet $facet \
+		lctl get_param -n osd*.*$mdtname.kbytesfree)
+	dd if=/dev/urandom of=$tmp bs=1024 count=100
+	# check also direct IO along write
+	dd if=$tmp of=$dom bs=102400 count=1 oflag=direct
+	sync
+	cmp $tmp $dom || error "file data is different"
+	[ $(stat -c%s $dom) == 102400 ] || error "bad size after write"
+	if [ $space_check == 1 ]; then
+		local mdtfree2=$(do_facet $facet \
+				lctl get_param -n osd*.*$mdtname.kbytesfree)
+		[ $(($mdtfree1 - $mdtfree2)) -ge 102 ] ||
+			error "MDT free space is wrong after write"
+	fi
+
+	# truncate
+	$TRUNCATE $dom 10000
+	[ $(stat -c%s $dom) == 10000 ] || error "bad size after truncate"
+	if [ $space_check == 1 ]; then
+		mdtfree1=$(do_facet $facet \
+				lctl get_param -n osd*.*$mdtname.kbytesfree)
+		[ $(($mdtfree1 - $mdtfree2)) -ge 92 ] ||
+			error "MDT free space is wrong after truncate"
+	fi
+
+	# append
+	cat $tmp >> $dom
+	sync
+	[ $(stat -c%s $dom) == 112400 ] || error "bad size after append"
+	if [ $space_check == 1 ]; then
+		mdtfree2=$(do_facet $facet \
+				lctl get_param -n osd*.*$mdtname.kbytesfree)
+		[ $(($mdtfree1 - $mdtfree2)) -ge 102 ] ||
+			error "MDT free space is wrong after append"
+	fi
+
+	# delete
+	rm $dom
+	if [ $space_check == 1 ]; then
+		mdtfree1=$(do_facet $facet \
+				lctl get_param -n osd*.*$mdtname.kbytesfree)
+		[ $(($mdtfree1 - $mdtfree2)) -ge 112 ] ||
+			error "MDT free space is wrong after removal"
+	fi
+
+	# combined striping
+	$LFS setstripe -E 1024K -L mdt -E EOF $dom ||
+		error "Can't create DoM + OST striping"
+
+	dd if=/dev/urandom of=$tmp bs=1024 count=2000
+	# check also direct IO along write
+	dd if=$tmp of=$dom bs=102400 count=20 oflag=direct
+	sync
+	cmp $tmp $dom || error "file data is different"
+	[ $(stat -c%s $dom) == 2048000 ] || error "bad size after write"
+	rm $dom
+	rm $tmp
+
+	return 0
+}
+run_test 270a "DoM: basic functionality tests"
+
+test_270b() {
+	local dom=$DIR/$tdir/dom_file
+	local max_size=1048576
+
+	mkdir -p $DIR/$tdir
+	$LFS setstripe -E $max_size -L mdt $dom
+
+	# truncate over the limit
+	$TRUNCATE $dom $(($max_size + 1)) &&
+		error "successful truncate over the maximum size"
+	# write over the limit
+	dd if=/dev/zero of=$dom bs=$max_size seek=1 count=1 &&
+		error "successful write over the maximum size"
+	# append over the limit
+	dd if=/dev/zero of=$dom bs=$(($max_size - 3)) count=1
+	echo "12345" >> $dom && error "successful append over the maximum size"
+	rm $dom
+
+	return 0
+}
+run_test 270b "DoM: maximum size overflow checks for DoM-only file"
+
+test_270c() {
+	mkdir -p $DIR/$tdir
+	$LFS setstripe -E 1024K -L mdt $DIR/$tdir
+
+	# check files inherit DoM EA
+	touch $DIR/$tdir/first
+	[ $($GETSTRIPE -L $DIR/$tdir/first) == 100 ] ||
+		error "bad pattern"
+	[ $($LFS getstripe -c $DIR/$tdir/first) == 0 ] ||
+		error "bad stripe count"
+	[ $($LFS getstripe -S $DIR/$tdir/first) == 1048576 ] ||
+		error "bad stripe size"
+
+	# check directory inherits DoM EA and uses it as default
+	mkdir $DIR/$tdir/subdir
+	touch $DIR/$tdir/subdir/second
+	[ $($LFS getstripe -L $DIR/$tdir/subdir/second) == 100 ] ||
+		error "bad pattern in sub-directory"
+	[ $($LFS getstripe -c $DIR/$tdir/subdir/second) == 0 ] ||
+		error "bad stripe count in sub-directory"
+	[ $($LFS getstripe -S $DIR/$tdir/subdir/second) == 1048576 ] ||
+		error "bad stripe size in sub-directory"
+	return 0
+}
+run_test 270c "DoM: DoM EA inheritance tests"
+
+test_270d() {
+	mkdir -p $DIR/$tdir
+	$LFS setstripe -E 1024K -L mdt $DIR/$tdir
+
+	# inherit default DoM striping
+	mkdir $DIR/$tdir/subdir
+	touch $DIR/$tdir/subdir/f1
+
+	# change default directory striping
+	$LFS setstripe -c 1 $DIR/$tdir/subdir
+	touch $DIR/$tdir/subdir/f2
+	[ $($LFS getstripe -c $DIR/$tdir/subdir/f2) == 1 ] ||
+		error "wrong default striping in file 2"
+	[ $($LFS getstripe -L $DIR/$tdir/subdir/f2) == 1 ] ||
+		error "bad pattern in file 2"
+	return 0
+}
+run_test 270d "DoM: change striping from DoM to RAID0"
+
+test_270e() {
+	mkdir -p $DIR/$tdir/dom
+	mkdir -p $DIR/$tdir/norm
+	DOMFILES=20
+	NORMFILES=10
+	$LFS setstripe -E 1M -L mdt $DIR/$tdir/dom
+	$LFS setstripe -i 0 -S 2M $DIR/$tdir/norm
+
+	createmany -o $DIR/$tdir/dom/dom- $DOMFILES
+	createmany -o $DIR/$tdir/norm/norm- $NORMFILES
+
+	# find DoM files by layout
+	NUM=$($LFIND -L mdt -type f $DIR/$tdir 2>/dev/null | wc -l)
+	[ $NUM -eq  $DOMFILES ] ||
+		error "lfs find -L: found $NUM, expected $DOMFILES"
+	echo "Test 1: lfs find 20 DOM files by layout: OK"
+
+	# there should be 1 dir with default DOM striping
+	NUM=$($LFIND -L mdt -type d $DIR/$tdir 2>/dev/null | wc -l)
+	[ $NUM -eq  1 ] ||
+		error "lfs find -L: found $NUM, expected 1 dir"
+	echo "Test 2: lfs find 1 DOM dir by layout: OK"
+
+	# find DoM files by stripe size
+	NUM=$($LFIND -S -1200K -type f $DIR/$tdir 2>/dev/null | wc -l)
+	[ $NUM -eq  $DOMFILES ] ||
+		error "lfs find -S: found $NUM, expected $DOMFILES"
+	echo "Test 4: lfs find 20 DOM files by stripe size: OK"
+
+	# find files by stripe offset except DoM files
+	NUM=$($LFIND -i 0 -type f $DIR/$tdir 2>/dev/null | wc -l)
+	[ $NUM -eq  $NORMFILES ] ||
+		error "lfs find -i: found $NUM, expected $NORMFILES"
+	echo "Test 5: lfs find no DOM files by stripe index: OK"
+	return 0
+}
+run_test 270e "DoM: lfs find with DoM files test"
+
+test_270f() {
+	local mdtname=${FSNAME}-MDT0000-mdtlov
+	local dom=$DIR/$tdir/dom_file
+	local dom_limit_saved=$(do_facet mds1 $LCTL get_param -n \
+						lod.$mdtname.dom_stripesize)
+	local dom_limit=131072
+
+	do_facet mds1 $LCTL set_param -n lod.$mdtname.dom_stripesize=$dom_limit
+	local dom_current=$(do_facet mds1 $LCTL get_param -n \
+						lod.$mdtname.dom_stripesize)
+	[ ${dom_limit} -eq ${dom_current} ] ||
+		error "Cannot change per-MDT DoM stripe limit to $dom_limit"
+
+	$LFS mkdir -i 0 -c 1 $DIR/$tdir
+	$LFS setstripe -d $DIR/$tdir
+	$LFS setstripe -E $dom_limit -L mdt $DIR/$tdir ||
+		error "Can't set directory default striping"
+
+	# exceed maximum stripe size
+	$LFS setstripe -E $(($dom_limit * 2)) -L mdt $dom &&
+		error "Able to create DoM component size more than LOD limit"
+
+	do_facet mds1 $LCTL set_param -n lod.$mdtname.dom_stripesize=0
+	dom_current=$(do_facet mds1 $LCTL get_param -n \
+						lod.$mdtname.dom_stripesize)
+	[ 0 -eq ${dom_current} ] ||
+		error "Can't set zero DoM stripe limit"
+
+	# too low values to be aligned with smallest stripe size 64K
+	do_facet mds1 $LCTL set_param -n lod.$mdtname.dom_stripesize=30000
+	dom_current=$(do_facet mds1 $LCTL get_param -n \
+						lod.$mdtname.dom_stripesize)
+	[ 30000 -eq ${dom_current} ] &&
+		error "Can set too small DoM stripe limit"
+
+	do_facet mds1 $LCTL set_param -n lod.$mdtname.dom_stripesize=2147483648
+	dom_current=$(do_facet mds1 $LCTL get_param -n \
+						lod.$mdtname.dom_stripesize)
+	echo $dom_current
+	[ 2147483648 -eq ${dom_current} ] &&
+		error "Can set too large DoM stripe limit"
+
+	do_facet mds1 $LCTL set_param -n \
+				lod.$mdtname.dom_stripesize=$((dom_limit * 2))
+	$LFS setstripe -E $((dom_limit * 2)) -L mdt $dom ||
+		error "Can't create DoM component size after limit change"
+	do_facet mds1 $LCTL set_param -n \
+				lod.$mdtname.dom_stripesize=$((dom_limit / 2))
+	$LFS setstripe -E $dom_limit -L mdt ${dom}_big &&
+		error "Can create big DoM component after limit decrease"
+	touch ${dom}_def ||
+		error "Can't create file with old default layout"
+
+	do_facet mds1 $LCTL set_param -n lod.*.dom_stripesize=$dom_limit_saved
+	return 0
+}
+run_test 270f "DoM: maximum DoM stripe size checks"
+
+test_271a() {
+	local dom=$DIR/$tdir/dom
+
+	mkdir -p $DIR/$tdir
+
+	$LFS setstripe -E 1024K -L mdt $dom
+
+	lctl set_param -n mdc.*.stats=clear
+	dd if=/dev/zero of=$dom bs=4096 count=1 || return 1
+	cat $dom > /dev/null
+	local reads=$(lctl get_param -n mdc.*.stats |
+			awk '/ost_read/ {print $2}')
+	[ -z $reads ] || error "Unexpected $reads READ RPCs"
+	ls $dom
+	rm -f $dom
+}
+run_test 271a "DoM: data is cached for read after write"
+
+test_271b() {
+	local dom=$DIR/$tdir/dom
+
+	mkdir -p $DIR/$tdir
+
+	$LFS setstripe -E 1024K -L mdt -E EOF $dom
+
+	lctl set_param -n mdc.*.stats=clear
+	dd if=/dev/zero of=$dom bs=4096 count=1 || return 1
+	cancel_lru_locks mdc
+	$CHECKSTAT -t file -s 4096 $dom || error "stat #1 fails"
+	# second stat to check size is cached on client
+	$CHECKSTAT -t file -s 4096 $dom || error "stat #2 fails"
+	local gls=$(lctl get_param -n mdc.*.stats |
+			awk '/ldlm_glimpse/ {print $2}')
+	[ -z $gls ] || error "Unexpected $gls glimpse RPCs"
+	rm -f $dom
+}
+run_test 271b "DoM: no glimpse RPC for stat (DoM only file)"
+
+test_271ba() {
+	local dom=$DIR/$tdir/dom
+
+	mkdir -p $DIR/$tdir
+
+	$LFS setstripe -E 1024K -L mdt -E EOF $dom
+
+	lctl set_param -n mdc.*.stats=clear
+	lctl set_param -n osc.*.stats=clear
+	dd if=/dev/zero of=$dom bs=2048K count=1 || return 1
+	cancel_lru_locks mdc
+	$CHECKSTAT -t file -s 2097152 $dom || error "stat"
+	# second stat to check size is cached on client
+	$CHECKSTAT -t file -s 2097152 $dom || error "stat"
+	local gls=$(lctl get_param -n mdc.*.stats |
+			awk '/ldlm_glimpse/ {print $2}')
+	[ -z $gls ] || error "Unexpected $gls glimpse RPCs"
+	local gls=$(lctl get_param -n osc.*.stats |
+			awk '/ldlm_glimpse/ {print $2}')
+	[ -z $gls ] || error "Unexpected $gls OSC glimpse RPCs"
+	rm -f $dom
+}
+run_test 271ba "DoM: no glimpse RPC for stat (combined file)"
+
+test_271c() {
+	# test to be enabled with lock_convert
+	skip "skipped until lock convert will be implemented" && return
+
+	local dom=$DIR/$tdir/dom
+
+	mkdir -p $DIR/$tdir
+
+	$LFS setstripe -E 1024K -L mdt $DIR/$tdir
+
+	local mdtidx=$($LFS getstripe -M $DIR/$tdir)
+	local facet=mds$((mdtidx + 1))
+
+	cancel_lru_locks mdc
+	do_facet $facet lctl set_param -n mdt.*.dom_lock=0
+	createmany -o $dom 1000
+	lctl set_param -n mdc.*.stats=clear
+	smalliomany -w $dom 1000 200
+	lctl get_param -n mdc.*.stats
+	local enq=$(lctl get_param -n mdc.*.stats |
+			awk '/ldlm_ibits_enqueue/ {print $2}')
+	# Each file has 1 open, 1 IO enqueues, total 2000
+	# but now we have also +1 getxattr for security.capability, total 3000
+	[ $enq -ge 2000 ] || error "Too few enqueues $enq, expected > 2000"
+	unlinkmany $dom 1000
+
+	cancel_lru_locks mdc
+	do_facet $facet lctl set_param -n mdt.*.dom_lock=1
+	createmany -o $dom 1000
+	lctl set_param -n mdc.*.stats=clear
+	smalliomany -w $dom 1000 200
+	lctl get_param -n mdc.*.stats
+	local enq_2=$(lctl get_param -n mdc.*.stats |
+			awk '/ldlm_ibits_enqueue/ {print $2}')
+	# Expect to see reduced amount of RPCs by 1000 due to single enqueue
+	# for OPEN and IO lock.
+	[ $((enq - enq_2)) -ge 1000 ] ||
+		error "Too many enqueues $enq_2, expected about $((enq - 1000))"
+	unlinkmany $dom 1000
+	return 0
+}
+run_test 271c "DoM: IO lock at open saves enqueue RPCs"
+
 cleanup_test_300() {
 	trap 0
 	umask $SAVE_UMASK
@@ -14560,7 +15565,11 @@ test_striped_dir() {
 		error "getdirstripe failed"
 	stripe_count=$($LFS getdirstripe -c $DIR/$tdir/striped_dir)
 	if [ "$stripe_count" != "2" ]; then
-		error "stripe_count is $stripe_count, expect 2"
+		error "1:stripe_count is $stripe_count, expect 2"
+	fi
+	stripe_count=$($LFS getdirstripe -T $DIR/$tdir/striped_dir)
+	if [ "$stripe_count" != "2" ]; then
+		error "2:stripe_count is $stripe_count, expect 2"
 	fi
 
 	stripe_index=$($LFS getdirstripe -i $DIR/$tdir/striped_dir)
@@ -14624,7 +15633,7 @@ test_300b() {
 	local mtime2
 	local mtime3
 
-	test_mkdir $DIR/$tdir || error "mkdir fail"
+	test_mkdir $DIR/$tdir
 	$LFS setdirstripe -i 0 -c 2 -t all_char $DIR/$tdir/striped_dir ||
 		error "set striped dir error"
 	for ((i=0; i<10; i++)); do
@@ -14726,13 +15735,13 @@ test_300e() {
 	mkdir $DIR/$tdir/striped_dir/dir_c
 
 	$LFS setdirstripe -i 0 -c 2 -t all_char $DIR/$tdir/striped_dir/stp_a ||
-		error "set striped dir under striped dir error"
+		error "set striped adir under striped dir error"
 
-	$LFS setdirstripe -i 0 -c 2 -t all_char $DIR/$tdir/striped_dir/stp_b ||
-		error "set striped dir under striped dir error"
+	$LFS setdirstripe -i 0 -c 2 -H all_char $DIR/$tdir/striped_dir/stp_b ||
+		error "set striped bdir under striped dir error"
 
 	$LFS setdirstripe -i 0 -c 2 -t all_char $DIR/$tdir/striped_dir/stp_c ||
-		error "set striped dir under striped dir error"
+		error "set striped cdir under striped dir error"
 
 	mrename $DIR/$tdir/striped_dir/dir_a $DIR/$tdir/striped_dir/dir_b ||
 		error "rename dir under striped dir fails"
@@ -14850,6 +15859,24 @@ test_300g() {
 	mkdir $DIR/$tdir
 	mkdir $DIR/$tdir/normal_dir
 
+	#Checking when client cache stripe index
+	$LFS setdirstripe -c$MDSCOUNT $DIR/$tdir/striped_dir
+	$LFS setdirstripe -D -i1 $DIR/$tdir/striped_dir ||
+		error "create striped_dir failed"
+
+	$LFS setdirstripe -i0 $DIR/$tdir/striped_dir/dir0 ||
+		error "create dir0 fails"
+	stripe_index=$($LFS getdirstripe -i $DIR/$tdir/striped_dir/dir0)
+	[ $stripe_index -eq 0 ] ||
+		error "dir0 expect index 0 got $stripe_index"
+
+	mkdir $DIR/$tdir/striped_dir/dir1 ||
+		error "create dir1 fails"
+	stripe_index=$($LFS getdirstripe -i $DIR/$tdir/striped_dir/dir1)
+	[ $stripe_index -eq 1 ] ||
+		error "dir1 expect index 1 got $stripe_index"
+
+	#check default stripe count/stripe index
 	test_300_check_default_striped_dir normal_dir $MDSCOUNT 1
 	test_300_check_default_striped_dir normal_dir 1 0
 	test_300_check_default_striped_dir normal_dir 2 1
@@ -14918,11 +15945,23 @@ test_300i() {
 	createmany -o $DIR/$tdir/striped_dir/f- 10 ||
 		error "create files under striped dir failed"
 
+	$LFS setdirstripe -i0 -c$MDSCOUNT -H all_char $DIR/$tdir/hashdir ||
+		error "set striped hashdir error"
+
+	$LFS setdirstripe -i0 -c$MDSCOUNT -H all_char $DIR/$tdir/hashdir/d0 ||
+		error "create dir0 under hash dir failed"
+	$LFS setdirstripe -i0 -c$MDSCOUNT -H fnv_1a_64 $DIR/$tdir/hashdir/d1 ||
+		error "create dir1 under hash dir failed"
+
 	# unfortunately, we need to umount to clear dir layout cache for now
 	# once we fully implement dir layout, we can drop this
 	umount_client $MOUNT || error "umount failed"
 	mount_client $MOUNT || error "mount failed"
 
+	$LFS find -H fnv_1a_64 $DIR/$tdir/hashdir
+	local dircnt=$($LFS find -H fnv_1a_64 $DIR/$tdir/hashdir | wc -l)
+	[ $dircnt -eq 1 ] || error "lfs find striped dir got:$dircnt,except:1"
+
 	#set the stripe to be unknown hash type
 	#define OBD_FAIL_UNKNOWN_LMV_STRIPE	0x1901
 	$LCTL set_param fail_loc=0x1901
@@ -15065,6 +16104,8 @@ test_300n() {
 		skip "Need MDS version at least 2.7.55" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
+
 	local stripe_index
 	local list=$(comma_list $(mdts_nodes))
 
@@ -15257,6 +16298,7 @@ test_311() {
 	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.54) ] &&
 		skip "lustre < 2.8.54 does not contain LU-4825 fix" && return
 	[ $PARALLEL == "yes" ] && skip "skip parallel run" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 
 	local old_iused=$($LFS df -i | grep OST0000 | awk '{ print $3 }')
 
@@ -15292,12 +16334,14 @@ test_311() {
 	local new_iused
 	for i in $(seq 120); do
 		new_iused=$($LFS df -i | grep OST0000 | awk '{ print $3 }')
-		[ $((old_iused - new_iused)) -gt 800 ] && break
+		# system may be too busy to destroy all objs in time, use
+		# a somewhat small value to not fail autotest
+		[ $((old_iused - new_iused)) -gt 400 ] && break
 		sleep 1
 	done
 
 	echo "waited $i sec, old Iused $old_iused, new Iused $new_iused"
-	[ $((old_iused - new_iused)) -gt 800 ] ||
+	[ $((old_iused - new_iused)) -gt 400 ] ||
 		error "objs not destroyed after unlink"
 }
 run_test 311 "disable OSP precreate, and unlink should destroy objs"
@@ -15308,7 +16352,7 @@ zfs_oid_to_objid()
 	local objid=$2
 
 	local vdevdir=$(dirname $(facet_vdevice $ost))
-	local cmd="$ZDB -e -p $vdevdir -dddd $(facet_device $ost)"
+	local cmd="$ZDB -e -p $vdevdir -ddddd $(facet_device $ost)"
 	local zfs_zapid=$(do_facet $ost $cmd |
 			  grep -w "/O/0/d$((objid%32))" -C 5 |
 			  awk '/Object/{getline; print $1}')
@@ -15337,12 +16381,15 @@ zfs_object_blksz() {
 }
 
 test_312() { # LU-4856
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
 	[ $(facet_fstype ost1) = "zfs" ] ||
 		{ skip "the test only applies to zfs" && return; }
 
 	local max_blksz=$(do_facet ost1 \
 			  $ZFS get -p recordsize $(facet_device ost1) |
 			  awk '!/VALUE/{print $3}')
+	local min_blksz=$(getconf PAGE_SIZE)
 
 	# to make life a little bit easier
 	$LFS mkdir -c 1 -i 0 $DIR/$tdir
@@ -15357,7 +16404,7 @@ test_312() { # LU-4856
 
 	# block size change by sequential over write
 	local blksz
-	for ((bs=4096; bs <= max_blksz; bs <<= 2)); do
+	for ((bs=$min_blksz; bs <= max_blksz; bs <<= 2)); do
 		dd if=/dev/zero of=$tf bs=$bs count=1 oflag=sync conv=notrunc
 
 		blksz=$(zfs_object_blksz ost1 $zfs_objid)
@@ -15366,18 +16413,18 @@ test_312() { # LU-4856
 	rm -f $tf
 
 	# block size change by sequential append write
-	dd if=/dev/zero of=$tf bs=4K count=1 oflag=sync conv=notrunc
+	dd if=/dev/zero of=$tf bs=$min_blksz count=1 oflag=sync conv=notrunc
 	oid=$($LFS getstripe $tf | awk '/obdidx/{getline; print $2}')
 	zfs_objid=$(zfs_oid_to_objid ost1 $oid)
 
-	for ((count = 1; count < $((max_blksz / 4096)); count *= 2)); do
-		dd if=/dev/zero of=$tf bs=4K count=$count seek=$count \
+	for ((count = 1; count < $((max_blksz / min_blksz)); count *= 2)); do
+		dd if=/dev/zero of=$tf bs=$min_blksz count=$count seek=$count \
 			oflag=sync conv=notrunc
 
 		blksz=$(zfs_object_blksz ost1 $zfs_objid)
-		blksz=$((blksz / 8192)) # in 2*4K unit
-		[ $blksz -eq $count ] ||
-			error "blksz error(in 8k): $blksz, expected: $count"
+		[ $blksz -eq $((2 * count * min_blksz)) ] ||
+			error "blksz error, actual $blksz, "	\
+				"expected: 2 * $count * $min_blksz"
 	done
 	rm -f $tf
 
@@ -15386,9 +16433,10 @@ test_312() { # LU-4856
 	oid=$($LFS getstripe $tf | awk '/obdidx/{getline; print $2}')
 	zfs_objid=$(zfs_oid_to_objid ost1 $oid)
 
-	dd if=/dev/zero of=$tf bs=8K count=1 oflag=sync conv=notrunc
+	dd if=/dev/zero of=$tf bs=1K count=1 oflag=sync conv=notrunc
 	blksz=$(zfs_object_blksz ost1 $zfs_objid)
-	[ $blksz -eq 8192 ] || error "blksz error: $blksz, expected: 8k"
+	[ $blksz -eq $min_blksz ] ||
+		error "blksz error: $blksz, expected: $min_blksz"
 
 	dd if=/dev/zero of=$tf bs=64K count=1 oflag=sync conv=notrunc seek=128
 	blksz=$(zfs_object_blksz ost1 $zfs_objid)
@@ -15400,7 +16448,32 @@ test_312() { # LU-4856
 }
 run_test 312 "make sure ZFS adjusts its block size by write pattern"
 
-test_399() { # LU-7655 for OST fake write
+test_313() {
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
+	local file=$DIR/$tfile
+	rm -f $file
+	$SETSTRIPE -c 1 -i 0 $file || error "setstripe failed"
+
+	# define OBD_FAIL_TGT_RCVD_EIO		 0x720
+	do_facet ost1 "$LCTL set_param fail_loc=0x720"
+	dd if=/dev/zero of=$file bs=4096 oflag=direct count=1 &&
+		error "write should failed"
+	do_facet ost1 "$LCTL set_param fail_loc=0"
+	rm -f $file
+}
+run_test 313 "io should fail after last_rcvd update fail"
+
+test_fake_rw() {
+	local read_write=$1
+	if [ "$read_write" = "write" ]; then
+		local dd_cmd="dd if=/dev/zero of=$DIR/$tfile"
+	elif [ "$read_write" = "read" ]; then
+		local dd_cmd="dd of=/dev/null if=$DIR/$tfile"
+	else
+		error "argument error"
+	fi
+
 	# turn off debug for performance testing
 	local saved_debug=$($LCTL get_param -n debug)
 	$LCTL set_param debug=0
@@ -15412,35 +16485,59 @@ test_399() { # LU-7655 for OST fake write
 	local blocks=$((ost1_avail_size/2/1024)) # half avail space by megabytes
 	[ $blocks -gt 1000 ] && blocks=1000 # 1G in maximum
 
+	if [ "$read_write" = "read" ]; then
+		truncate -s $(expr 1048576 \* $blocks) $DIR/$tfile
+	fi
+
 	local start_time=$(date +%s.%N)
-	dd if=/dev/zero of=$DIR/$tfile bs=1M count=$blocks oflag=sync ||
-		error "real dd writing error"
+	$dd_cmd bs=1M count=$blocks oflag=sync ||
+		error "real dd $read_write error"
 	local duration=$(bc <<< "$(date +%s.%N) - $start_time")
-	rm -f $DIR/$tfile
 
-	# define OBD_FAIL_OST_FAKE_WRITE	0x238
+	if [ "$read_write" = "write" ]; then
+		rm -f $DIR/$tfile
+	fi
+
+	# define OBD_FAIL_OST_FAKE_RW		0x238
 	do_facet ost1 $LCTL set_param fail_loc=0x238
 
 	local start_time=$(date +%s.%N)
-	dd if=/dev/zero of=$DIR/$tfile bs=1M count=$blocks oflag=sync ||
-		error "fake dd writing error"
+	$dd_cmd bs=1M count=$blocks oflag=sync ||
+		error "fake dd $read_write error"
 	local duration_fake=$(bc <<< "$(date +%s.%N) - $start_time")
 
-	# verify file size
-	cancel_lru_locks osc
-	$CHECKSTAT -t file -s $((blocks * 1024 * 1024)) $DIR/$tfile ||
-		error "$tfile size not $blocks MB"
-
+	if [ "$read_write" = "write" ]; then
+		# verify file size
+		cancel_lru_locks osc
+		$CHECKSTAT -t file -s $((blocks * 1024 * 1024)) $DIR/$tfile ||
+			error "$tfile size not $blocks MB"
+	fi
 	do_facet ost1 $LCTL set_param fail_loc=0
 
-	echo "fake write $duration_fake vs. normal write $duration in seconds"
+	echo "fake $read_write $duration_fake vs. normal $read_write" \
+		"$duration in seconds"
 	[ $(bc <<< "$duration_fake < $duration") -eq 1 ] ||
 		error_not_in_vm "fake write is slower"
 
 	$LCTL set_param -n debug="$saved_debug"
 	rm -f $DIR/$tfile
 }
-run_test 399 "fake write should not be slower than normal write"
+test_399a() { # LU-7655 for OST fake write
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
+	test_fake_rw write
+}
+run_test 399a "fake write should not be slower than normal write"
+
+test_399b() { # LU-8726 for OST fake read
+	remote_ost_nodsh && skip "remote OST with nodsh" && return
+
+	if [ "$(facet_fstype ost1)" != "ldiskfs" ]; then
+		skip "ldiskfs only test" && return 0
+	fi
+	test_fake_rw read
+}
+run_test 399b "fake read should not be slower than normal read"
 
 test_400a() { # LU-1606, was conf-sanity test_74
 	local extra_flags=''
@@ -15455,7 +16552,6 @@ test_400a() { # LU-1606, was conf-sanity test_74
 
 	if ! [[ -d $prefix ]]; then
 		# Assume we're running in tree and fixup the include path.
-		extra_flags+=" -I$LUSTRE/../libcfs/include"
 		extra_flags+=" -I$LUSTRE/include"
 		extra_flags+=" -L$LUSTRE/utils"
 	fi
@@ -15471,7 +16567,7 @@ run_test 400a "Lustre client api program can compile and link"
 test_400b() { # LU-1606, LU-5011
 	local header
 	local out=$TMP/$tfile
-	local prefix=/usr/include/lustre
+	local prefix=/usr/include/linux/lustre
 
 	# We use a hard coded prefix so that this test will not fail
 	# when run in tree. There are headers in lustre/include/lustre/
@@ -15490,8 +16586,8 @@ test_400b() { # LU-1606, LU-5011
 			continue
 		fi
 
-		if [[ "$(basename $header)" == liblustreapi.h ]]; then
-			continue # liblustreapi.h is deprecated.
+		if [[ "$(basename $header)" == lustre_ioctl.h ]]; then
+			continue # lustre_ioctl.h is internal header
 		fi
 
 		$CC -Wall -Werror -include $header -c -x c /dev/null -o $out ||
@@ -15508,6 +16604,9 @@ test_401a() { #LU-7437
 	#count the number of parameters by "list_param -R"
 	local params=$($LCTL list_param -R '*' 2>/dev/null | wc -l)
 	#count the number of parameters by listing proc files
+	local proc_dirs=$(eval \ls -d $proc_regexp 2>/dev/null)
+	echo "proc_dirs='$proc_dirs'"
+	[ -n "$proc_dirs" ] || error "no proc_dirs on $HOSTNAME"
 	local procs=$(find -L $proc_dirs -mindepth 1 -printf '%P\n' 2>/dev/null|
 		      sort -u | wc -l)
 
@@ -15594,6 +16693,14 @@ test_401d() {
 run_test 401d "Verify 'lctl set_param' accepts values containing '='"
 
 test_402() {
+	local server_version=$(lustre_version_code $SINGLEMDS)
+	[[ $server_version -ge $(version_code 2.7.66) ]] ||
+	[[ $server_version -ge $(version_code 2.7.18.4) &&
+		$server_version -lt $(version_code 2.7.50) ]] ||
+	[[ $server_version -ge $(version_code 2.7.2) &&
+		$server_version -lt $(version_code 2.7.11) ]] ||
+		{ skip "Need MDS version 2.7.2+ or 2.7.18.4+ or 2.7.66+";
+			return; }
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	$LFS setdirstripe -i 0 $DIR/$tdir || error "setdirstripe -i 0 failed"
 #define OBD_FAIL_MDS_FLD_LOOKUP 0x15c
@@ -15633,6 +16740,10 @@ test_403() {
 run_test 403 "i_nlink should not drop to zero due to aliasing"
 
 test_404() { # LU-6601
+	local server_version=$(lustre_version_code $SINGLEMDS)
+	[[ $server_version -ge $(version_code 2.8.53) ]] ||
+		{ skip "Need server version newer than 2.8.52"; return 0; }
+
 	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 	local mosps=$(do_facet $SINGLEMDS $LCTL dl |
 		awk '/osp .*-osc-MDT/ { print $4}')
@@ -15660,12 +16771,13 @@ test_404() { # LU-6601
 run_test 404 "validate manual {de}activated works properly for OSPs"
 
 test_405() {
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.6.92) ] &&
+	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.6.92) -o \
+	[ $(lustre_version_code client) -lt $(version_code 2.6.99) ] &&
 		skip "Layout swap lock is not supported" && return
 
 	check_swap_layouts_support && return 0
 
-	test_mkdir -p $DIR/$tdir
+	test_mkdir $DIR/$tdir
 	swap_lock_test -d $DIR/$tdir ||
 		error "One layout swap locked test failed"
 }
@@ -15679,12 +16791,15 @@ test_406() {
 	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.50) ] &&
 		skip "Need MDS version at least 2.8.50" && return
 
-	local def_stripenr=$($GETSTRIPE -c $MOUNT)
+	local def_stripe_count=$($GETSTRIPE -c $MOUNT)
 	local def_stripe_size=$($GETSTRIPE -S $MOUNT)
 	local def_stripe_offset=$($GETSTRIPE -i $MOUNT)
 	local def_pool=$($GETSTRIPE -p $MOUNT)
-
 	local test_pool=$TESTNAME
+
+	if ! combined_mgs_mds ; then
+		mount_mgs_client
+	fi
 	pool_add $test_pool || error "pool_add failed"
 	pool_add_targets $test_pool 0 $(($OSTCOUNT - 1)) 1 ||
 		error "pool_add_targets failed"
@@ -15734,26 +16849,30 @@ test_406() {
 
 	# restore FS default striping
 	if [ -z $def_pool ]; then
-		$SETSTRIPE -c $def_stripenr -S $def_stripe_size \
+		$SETSTRIPE -c $def_stripe_count -S $def_stripe_size \
 			-i $def_stripe_offset $MOUNT ||
 			error "restore default striping failed"
 	else
-		$SETSTRIPE -c $def_stripenr -S $def_stripe_size -p $def_pool \
-			-i $def_stripe_offset $MOUNT ||
+		$SETSTRIPE -c $def_stripe_count -S $def_stripe_size \
+			-i $def_stripe_offset -p $def_pool $MOUNT ||
 			error "restore default striping with $def_pool failed"
 	fi
 
 	local f=$DIR/$tdir/$tfile
 	pool_remove_all_targets $test_pool $f
 	pool_remove $test_pool $f
+
+	if ! combined_mgs_mds ; then
+		umount_mgs_client
+	fi
 }
 run_test 406 "DNE support fs default striping"
 
 test_407() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
-
 	[[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.8.55) ]] &&
 		skip "Need MDS version at least 2.8.55" && return
+	remote_mds_nodsh && skip "remote MDS with nodsh" && return
 
 	$LFS mkdir -i 0 -c 1 $DIR/$tdir.0 ||
 		error "$LFS mkdir -i 0 -c 1 $tdir.0 failed"
@@ -15824,6 +16943,330 @@ test_409()
 }
 run_test 409 "Large amount of cross-MDTs hard links on the same file"
 
+test_410()
+{
+	[[ $(lustre_version_code client) -lt $(version_code 2.9.59) ]] &&
+		skip "Need client version at least 2.9.59" && return
+
+	# Create a file, and stat it from the kernel
+	local testfile=$DIR/$tfile
+	touch $testfile
+
+	local run_id=$RANDOM
+	local my_ino=$(stat --format "%i" $testfile)
+
+	# Try to insert the module. This will always fail as the
+	# module is designed to not be inserted.
+	insmod $LUSTRE/tests/kernel/kinode.ko run_id=$run_id fname=$testfile \
+	    &> /dev/null
+
+	# Anything but success is a test failure
+	dmesg | grep -q \
+	    "lustre_kinode_$run_id: inode numbers are identical: $my_ino" ||
+	    error "no inode match"
+}
+run_test 410 "Test inode number returned from kernel thread"
+
+cleanup_test411_cgroup() {
+	trap 0
+	rmdir "$1"
+}
+
+test_411() {
+	local cg_basedir=/sys/fs/cgroup/memory
+	# LU-9966
+	test -f "$cg_basedir/memory.kmem.limit_in_bytes" ||
+		{ skip "no setup for cgroup"; return; }
+
+	dd if=/dev/zero of=$DIR/$tfile bs=1M count=100 conv=fsync ||
+		error "test file creation failed"
+	cancel_lru_locks osc
+
+	# Create a very small memory cgroup to force a slab allocation error
+	local cgdir=$cg_basedir/osc_slab_alloc
+	mkdir $cgdir || error "cgroup mkdir '$cgdir' failed"
+	trap "cleanup_test411_cgroup $cgdir" EXIT
+	echo 2M > $cgdir/memory.kmem.limit_in_bytes
+	echo 1M > $cgdir/memory.limit_in_bytes
+
+	# Should not LBUG, just be killed by oom-killer
+	sh -c "echo \$$ > $cgdir/tasks && dd if=$DIR/$tfile of=/dev/null" &&
+		error "fail to trigger a memory allocation error"
+
+	cleanup_test411_cgroup $cgdir
+
+	return 0
+}
+run_test 411 "Slab allocation error with cgroup does not LBUG"
+
+prep_801() {
+	[[ $(lustre_version_code mds1) -lt $(version_code 2.9.55) ]] ||
+	[[ $(lustre_version_code ost1) -lt $(version_code 2.9.55) ]] &&
+		skip "Need server version at least 2.9.55" & exit 0
+	start_full_debug_logging
+}
+
+post_801() {
+	stop_full_debug_logging
+}
+
+barrier_stat() {
+	if [ $(lustre_version_code mgs) -le $(version_code 2.10.0) ]; then
+		local st=$(do_facet mgs $LCTL barrier_stat $FSNAME |
+			   awk '/The barrier for/ { print $7 }')
+		echo $st
+	else
+		local st=$(do_facet mgs $LCTL barrier_stat -s $FSNAME)
+		echo \'$st\'
+	fi
+}
+
+barrier_expired() {
+	local expired
+
+	if [ $(lustre_version_code mgs) -le $(version_code 2.10.0) ]; then
+		expired=$(do_facet mgs $LCTL barrier_stat $FSNAME |
+			  awk '/will be expired/ { print $7 }')
+	else
+		expired=$(do_facet mgs $LCTL barrier_stat -t $FSNAME)
+	fi
+
+	echo $expired
+}
+
+test_801a() {
+	prep_801
+
+	echo "Start barrier_freeze at: $(date)"
+	#define OBD_FAIL_BARRIER_DELAY		0x2202
+	do_facet mgs $LCTL set_param fail_val=5 fail_loc=0x2202
+	do_facet mgs $LCTL barrier_freeze $FSNAME 10 &
+
+	sleep 2
+	local b_status=$(barrier_stat)
+	echo "Got barrier status at: $(date)"
+	[ "$b_status" = "'freezing_p1'" ] ||
+		error "(1) unexpected barrier status $b_status"
+
+	do_facet mgs $LCTL set_param fail_val=0 fail_loc=0
+	wait
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(2) unexpected barrier status $b_status"
+
+	local expired=$(barrier_expired)
+	echo "sleep $((expired + 3)) seconds, then the barrier will be expired"
+	sleep $((expired + 3))
+
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'expired'" ] ||
+		error "(3) unexpected barrier status $b_status"
+
+	do_facet mgs $LCTL barrier_freeze $FSNAME 10 ||
+		error "(4) fail to freeze barrier"
+
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(5) unexpected barrier status $b_status"
+
+	echo "Start barrier_thaw at: $(date)"
+	#define OBD_FAIL_BARRIER_DELAY		0x2202
+	do_facet mgs $LCTL set_param fail_val=5 fail_loc=0x2202
+	do_facet mgs $LCTL barrier_thaw $FSNAME &
+
+	sleep 2
+	b_status=$(barrier_stat)
+	echo "Got barrier status at: $(date)"
+	[ "$b_status" = "'thawing'" ] ||
+		error "(6) unexpected barrier status $b_status"
+
+	do_facet mgs $LCTL set_param fail_val=0 fail_loc=0
+	wait
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'thawed'" ] ||
+		error "(7) unexpected barrier status $b_status"
+
+	#define OBD_FAIL_BARRIER_FAILURE	0x2203
+	do_facet $SINGLEMDS $LCTL set_param fail_loc=0x2203
+	do_facet mgs $LCTL barrier_freeze $FSNAME
+
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'failed'" ] ||
+		error "(8) unexpected barrier status $b_status"
+
+	do_facet $SINGLEMDS $LCTL set_param fail_loc=0
+	do_facet mgs $LCTL barrier_thaw $FSNAME
+
+	post_801
+}
+run_test 801a "write barrier user interfaces and stat machine"
+
+test_801b() {
+	prep_801
+
+	mkdir $DIR/$tdir || error "(1) fail to mkdir"
+	createmany -d $DIR/$tdir/d 6 || "(2) fail to mkdir"
+	touch $DIR/$tdir/d2/f10 || error "(3) fail to touch"
+	touch $DIR/$tdir/d3/f11 || error "(4) fail to touch"
+	touch $DIR/$tdir/d4/f12 || error "(5) fail to touch"
+
+	cancel_lru_locks mdc
+
+	# 180 seconds should be long enough
+	do_facet mgs $LCTL barrier_freeze $FSNAME 180
+
+	local b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(6) unexpected barrier status $b_status"
+
+	mkdir $DIR/$tdir/d0/d10 &
+	mkdir_pid=$!
+
+	touch $DIR/$tdir/d1/f13 &
+	touch_pid=$!
+
+	ln $DIR/$tdir/d2/f10 $DIR/$tdir/d2/f14 &
+	ln_pid=$!
+
+	mv $DIR/$tdir/d3/f11 $DIR/$tdir/d3/f15 &
+	mv_pid=$!
+
+	rm -f $DIR/$tdir/d4/f12 &
+	rm_pid=$!
+
+	stat $DIR/$tdir/d5 || error "(7) stat should succeed"
+
+	# To guarantee taht the 'stat' is not blocked
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(8) unexpected barrier status $b_status"
+
+	# let above commands to run at background
+	sleep 5
+
+	ps -p $mkdir_pid || error "(9) mkdir should be blocked"
+	ps -p $touch_pid || error "(10) touch should be blocked"
+	ps -p $ln_pid || error "(11) link should be blocked"
+	ps -p $mv_pid || error "(12) rename should be blocked"
+	ps -p $rm_pid || error "(13) unlink should be blocked"
+
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(14) unexpected barrier status $b_status"
+
+	do_facet mgs $LCTL barrier_thaw $FSNAME
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'thawed'" ] ||
+		error "(15) unexpected barrier status $b_status"
+
+	wait $mkdir_pid || error "(16) mkdir should succeed"
+	wait $touch_pid || error "(17) touch should succeed"
+	wait $ln_pid || error "(18) link should succeed"
+	wait $mv_pid || error "(19) rename should succeed"
+	wait $rm_pid || error "(20) unlink should succeed"
+
+	post_801
+}
+run_test 801b "modification will be blocked by write barrier"
+
+test_801c() {
+	[[ $MDSCOUNT -lt 2 ]] && skip "needs >= 2 MDTs" && return
+
+	prep_801
+
+	stop mds2 || error "(1) Fail to stop mds2"
+
+	do_facet mgs $LCTL barrier_freeze $FSNAME 30
+
+	local b_status=$(barrier_stat)
+	[ "$b_status" = "'expired'" -o "$b_status" = "'failed'" ] || {
+		do_facet mgs $LCTL barrier_thaw $FSNAME
+		error "(2) unexpected barrier status $b_status"
+	}
+
+	do_facet mgs $LCTL barrier_rescan $FSNAME ||
+		error "(3) Fail to rescan barrier bitmap"
+
+	do_facet mgs $LCTL barrier_freeze $FSNAME 10
+
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'frozen'" ] ||
+		error "(4) unexpected barrier status $b_status"
+
+	do_facet mgs $LCTL barrier_thaw $FSNAME
+	b_status=$(barrier_stat)
+	[ "$b_status" = "'thawed'" ] ||
+		error "(5) unexpected barrier status $b_status"
+
+	local devname=$(mdsdevname 2)
+
+	start mds2 $devname $MDS_MOUNT_OPTS || error "(6) Fail to start mds2"
+
+	do_facet mgs $LCTL barrier_rescan $FSNAME ||
+		error "(7) Fail to rescan barrier bitmap"
+
+	post_801
+}
+run_test 801c "rescan barrier bitmap"
+
+saved_MGS_MOUNT_OPTS=$MGS_MOUNT_OPTS
+saved_MDS_MOUNT_OPTS=$MDS_MOUNT_OPTS
+saved_OST_MOUNT_OPTS=$OST_MOUNT_OPTS
+
+cleanup_802() {
+	trap 0
+
+	stopall
+	MGS_MOUNT_OPTS=$saved_MGS_MOUNT_OPTS
+	MDS_MOUNT_OPTS=$saved_MDS_MOUNT_OPTS
+	OST_MOUNT_OPTS=$saved_OST_MOUNT_OPTS
+	setupall
+}
+
+test_802() {
+
+	[[ $(lustre_version_code mds1) -lt $(version_code 2.9.55) ]] ||
+	[[ $(lustre_version_code ost1) -lt $(version_code 2.9.55) ]] &&
+		skip "Need server version at least 2.9.55" & exit 0
+
+	mkdir $DIR/$tdir || error "(1) fail to mkdir"
+
+	cp $LUSTRE/tests/test-framework.sh $DIR/$tdir/ ||
+		error "(2) Fail to copy"
+
+	trap cleanup_802 EXIT
+
+	# sync by force before remount as readonly
+	sync; sync_all_data; sleep 3; sync_all_data
+
+	stopall
+
+	MGS_MOUNT_OPTS=$(csa_add "$MGS_MOUNT_OPTS" -o rdonly_dev)
+	MDS_MOUNT_OPTS=$(csa_add "$MDS_MOUNT_OPTS" -o rdonly_dev)
+	OST_MOUNT_OPTS=$(csa_add "$OST_MOUNT_OPTS" -o rdonly_dev)
+
+	echo "Mount the server as read only"
+	setupall server_only || error "(3) Fail to start servers"
+
+	echo "Mount client without ro should fail"
+	mount_client $MOUNT &&
+		error "(4) Mount client without 'ro' should fail"
+
+	echo "Mount client with ro should succeed"
+	mount_client $MOUNT ro ||
+		error "(5) Mount client with 'ro' should succeed"
+
+	echo "Modify should be refused"
+	touch $DIR/$tdir/guard && error "(6) Touch should fail under ro mode"
+
+	echo "Read should be allowed"
+	diff $LUSTRE/tests/test-framework.sh $DIR/$tdir/test-framework.sh ||
+		error "(7) Read should succeed under ro mode"
+
+	cleanup_802
+}
+run_test 802 "simulate readonly device"
+
 #
 # tests that do cleanup/setup should be run at the end
 #