X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Ftests%2Fconf-sanity.sh;h=c5d4ee3e06f6ef088a7a18e7ed6644227d119cc9;hb=c86a1a5bd20cd97ed578fb450b3773772ad72d9c;hp=488948cdca8490b30ed25584c84f58a875f5e56d;hpb=f84e06eead85de5cd7832855bab5ff72a542e971;p=fs%2Flustre-release.git

diff --git a/lustre/tests/conf-sanity.sh b/lustre/tests/conf-sanity.sh
old mode 100644
new mode 100755
index 488948c..c5d4ee3
--- a/lustre/tests/conf-sanity.sh
+++ b/lustre/tests/conf-sanity.sh
@@ -4,8 +4,8 @@ set -e
 
 ONLY=${ONLY:-"$*"}
 
-# bug number for skipped test:
-ALWAYS_EXCEPT="$CONF_SANITY_EXCEPT"
+# bug number for skipped test:     LU-7428
+ALWAYS_EXCEPT="$CONF_SANITY_EXCEPT 84"
 # UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
 
 is_sles11()						# LU-2181
@@ -52,7 +52,7 @@ init_test_env $@
 . ${CONFIG:=$LUSTRE/tests/cfg/$NAME.sh}
 
 # use small MDS + OST size to speed formatting time
-# do not use too small MDSSIZE/OSTSIZE, which affect the default jouranl size
+# do not use too small MDSSIZE/OSTSIZE, which affect the default journal size
 # STORED_MDSSIZE is used in test_18
 STORED_MDSSIZE=$MDSSIZE
 STORED_OSTSIZE=$OSTSIZE
@@ -86,8 +86,9 @@ init_logging
 #
 require_dsh_mds || exit 0
 require_dsh_ost || exit 0
-#
-[ "$SLOW" = "no" ] && EXCEPT_SLOW="30a 31 45 69"
+
+#                                  8  22   (min)"
+[ "$SLOW" = "no" ] && EXCEPT_SLOW="45 69"
 
 assert_DIR
 
@@ -1332,8 +1333,8 @@ run_test 31 "Connect to non-existent node (shouldn't crash)"
 
 
 T32_QID=60000
-T32_BLIMIT=20480 # Kbytes
-T32_ILIMIT=2
+T32_BLIMIT=40960 # Kbytes
+T32_ILIMIT=4
 
 #
 # This is not really a test but a tool to create new disk
@@ -1349,6 +1350,10 @@ test_32newtarball() {
 	local dst=.
 	local src=/etc/rc.d
 	local tmp=$TMP/t32_image_create
+	local server_version=$(lustre_version_code $SINGLEMDS)
+	local remote_dir
+	local striped_dir
+	local pushd_dir
 
 	if [ $FSNAME != t32fs -o \( -z "$MDSDEV" -a -z "$MDSDEV1" \) -o	\
 	     $OSTCOUNT -ne 1 -o	-z "$OSTDEV1" ]; then
@@ -1367,7 +1372,7 @@ test_32newtarball() {
 	mkdir $tmp/src || return 1
 	tar cf - -C $src . | tar xf - -C $tmp/src
 	dd if=/dev/zero of=$tmp/src/t32_qf_old bs=1M \
-		count=$(($T32_BLIMIT / 1024 / 2))
+		count=$(($T32_BLIMIT / 1024 / 4))
 	chown $T32_QID.$T32_QID $tmp/src/t32_qf_old
 
 	# format ost with comma-separated NIDs to verify LU-4460
@@ -1376,18 +1381,42 @@ test_32newtarball() {
 
 	setupall
 
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.3.50) ] &&
+	[[ $server_version -ge $(version_code 2.3.50) ]] ||
 		$LFS quotacheck -ug /mnt/$FSNAME
 	$LFS setquota -u $T32_QID -b 0 -B $T32_BLIMIT -i 0 -I $T32_ILIMIT \
 		/mnt/$FSNAME
 
 	tar cf - -C $tmp/src . | tar xf - -C /mnt/$FSNAME
+
+	if [[ $MDSCOUNT -ge 2 ]]; then
+		remote_dir=/mnt/$FSNAME/remote_dir
+		$LFS mkdir -i 1 $remote_dir
+		tar cf - -C $tmp/src . | tar xf - -C $remote_dir
+
+		if [[ $server_version -ge $(version_code 2.7.0) ]]; then
+			striped_dir=/mnt/$FSNAME/striped_dir_old
+			$LFS mkdir -i 1 -c 2 $striped_dir
+			tar cf - -C $tmp/src . | tar xf - -C $striped_dir
+		fi
+	fi
+
 	stopall
 
 	mkdir $tmp/img || return 1
 
 	setupall
-	pushd /mnt/$FSNAME
+
+	pushd_dir=/mnt/$FSNAME
+	if [[ $MDSCOUNT -ge 2 ]]; then
+		pushd_dir=$remote_dir
+		if [[ $server_version -ge $(version_code 2.7.0) ]]; then
+			pushd $striped_dir
+			ls -Rni --time-style=+%s >$tmp/img/list2
+			popd
+		fi
+	fi
+
+	pushd $pushd_dir
 	ls -Rni --time-style=+%s >$tmp/img/list
 	find ! -name .lustre -type f -exec sha1sum {} \; |
 		sort -k 2 >$tmp/img/sha1sums
@@ -1395,7 +1424,7 @@ test_32newtarball() {
 	$LCTL get_param -n version | head -n 1 |
 		sed -e 's/^lustre: *//' >$tmp/img/commit
 
-	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.3.50) ] &&
+	[[ $server_version -ge $(version_code 2.3.50) ]] ||
 		$LFS quotaon -ug /mnt/$FSNAME
 	$LFS quota -u $T32_QID -v /mnt/$FSNAME
 	$LFS quota -v -u $T32_QID /mnt/$FSNAME |
@@ -1406,11 +1435,8 @@ test_32newtarball() {
 		awk 'BEGIN { num='5' } { if ($1 == "'/mnt/$FSNAME'") \
 		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
 		| tr -d "*" > $tmp/img/ispace
-
-	if [ $MDSCOUNT -ge 2 ]; then
-		$LFS mkdir -i 1 /mnt/$FSNAME/remote_dir
-		tar cf - -C $tmp/src . | tar xf - -C /mnt/$FSNAME/remote_dir
-	fi
+	echo $T32_BLIMIT > $tmp/img/blimit
+	echo $T32_ILIMIT > $tmp/img/ilimit
 
 	stopall
 
@@ -1428,6 +1454,9 @@ test_32newtarball() {
 	mv ${MDSDEV1:-$MDSDEV} $tmp/img
 	for num in $(seq 2 $MDSCOUNT); do
 		local devname=$(mdsdevname $num)
+		local facet=mds$num
+		[[ $(facet_fstype $facet) != zfs ]] ||
+			devname=$(mdsvdevname $num)
 		mv $devname $tmp/img
 	done
 	mv $OSTDEV1 $tmp/img
@@ -1473,7 +1502,8 @@ t32_check() {
 
 t32_test_cleanup() {
 	local tmp=$TMP/t32
-	local fstype=$(facet_fstype $SINGLEMDS)
+	local facet=$SINGLEMDS
+	local fstype=$(facet_fstype $facet)
 	local rc=$?
 
 	if $shall_cleanup_lustre; then
@@ -1491,9 +1521,15 @@ t32_test_cleanup() {
 
 	$r rm -rf $tmp
 	rm -rf $tmp
-	if [ $fstype == "zfs" ]; then
-		$r $ZPOOL destroy t32fs-mdt1 || rc=$?
-		$r $ZPOOL destroy t32fs-ost1 || rc=$?
+	if [[ $fstype == zfs ]]; then
+		local poolname
+		local poolname_list="t32fs-mdt1 t32fs-ost1"
+
+		! $mdt2_is_available || poolname_list+=" t32fs-mdt2"
+
+		for poolname in $poolname_list; do
+			destroy_zpool $facet $poolname
+		done
 	fi
 	return $rc
 }
@@ -1583,8 +1619,8 @@ t32_verify_quota() {
 		awk 'BEGIN { num='3' } { if ($1 == "'$mnt'") \
 		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
 		| tr -d "*")
-	[ $qval -eq $T32_BLIMIT ] || {
-		echo "blimit, act:$qval, exp:$T32_BLIMIT"
+	[ $qval -eq $img_blimit ] || {
+		echo "blimit, act:$qval, exp:$img_blimit"
 		return 1
 	}
 
@@ -1592,8 +1628,8 @@ t32_verify_quota() {
 		awk 'BEGIN { num='7' } { if ($1 == "'$mnt'") \
 		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
 		| tr -d "*")
-	[ $qval -eq $T32_ILIMIT ] || {
-		echo "ilimit, act:$qval, exp:$T32_ILIMIT"
+	[ $qval -eq $img_ilimit ] || {
+		echo "ilimit, act:$qval, exp:$img_ilimit"
 		return 1
 	}
 
@@ -1615,18 +1651,18 @@ t32_verify_quota() {
 
 	chmod 0777 $mnt
 	runas -u $T32_QID -g $T32_QID dd if=/dev/zero of=$mnt/t32_qf_new \
-		bs=1M count=$(($T32_BLIMIT / 1024)) oflag=sync && {
+		bs=1M count=$((img_blimit / 1024)) oflag=sync && {
 		echo "Write succeed, but expect -EDQUOT"
 		return 1
 	}
 	rm -f $mnt/t32_qf_new
 
 	runas -u $T32_QID -g $T32_QID createmany -m $mnt/t32_qf_ \
-		$T32_ILIMIT && {
+		$img_ilimit && {
 		echo "Create succeed, but expect -EDQUOT"
 		return 1
 	}
-	unlinkmany $mnt/t32_qf_ $T32_ILIMIT
+	unlinkmany $mnt/t32_qf_ $img_ilimit
 
 	return 0
 }
@@ -1640,6 +1676,7 @@ t32_test() {
 	local shall_cleanup_mdt1=false
 	local shall_cleanup_ost=false
 	local shall_cleanup_lustre=false
+	local mdt2_is_available=false
 	local node=$(facet_active_host $SINGLEMDS)
 	local r="do_node $node"
 	local node2=$(facet_active_host mds2)
@@ -1649,6 +1686,8 @@ t32_test() {
 	local img_arch
 	local img_bspace
 	local img_ispace
+	local img_blimit
+	local img_ilimit
 	local fsname=t32fs
 	local nid=$($r $LCTL list_nids | head -1)
 	local mopts
@@ -1661,6 +1700,7 @@ t32_test() {
 	local mdt2_dev=$tmp/mdt2
 	local ost_dev=$tmp/ost
 	local stripe_index
+	local stripe_count
 	local dir
 
 	trap 'trap - RETURN; t32_test_cleanup' RETURN
@@ -1677,6 +1717,14 @@ t32_test() {
 	img_arch=$($r cat $tmp/arch)
 	img_bspace=$($r cat $tmp/bspace)
 	img_ispace=$($r cat $tmp/ispace)
+
+	# older images did not have "blimit" and "ilimit" files
+	# use old values for T32_BLIMIT and T32_ILIMIT
+	$r test -f $tmp/blimit && img_blimit=$($r cat $tmp/blimit) ||
+		img_blimit=20480
+	$r test -f $tmp/ilimit && img_ilimit=$($r cat $tmp/ilimit) ||
+		img_ilimit=2
+
 	echo "Upgrading from $(basename $tarball), created with:"
 	echo "  Commit: $img_commit"
 	echo "  Kernel: $img_kernel"
@@ -1691,12 +1739,23 @@ t32_test() {
 		$(lustre_version_code ost1) -lt $(version_code 2.5.0) ] &&
 			ff_convert="no"
 
-	if [ $fstype == "zfs" ]; then
+	! $r test -f $mdt2_dev || mdt2_is_available=true
+
+	if [[ $fstype == zfs ]]; then
 		# import pool first
-		$r $ZPOOL import -f -d $tmp t32fs-mdt1
-		$r $ZPOOL import -f -d $tmp t32fs-ost1
+		local poolname
+		local poolname_list="t32fs-mdt1 t32fs-ost1"
+
+		! $mdt2_is_available || poolname_list+=" t32fs-mdt2"
+
+		for poolname in $poolname_list; do
+			$r "$ZPOOL list -H $poolname >/dev/null 2>&1 ||
+				$ZPOOL import -f -d $tmp $poolname"
+		done
+
 		mdt_dev=t32fs-mdt1/mdt1
 		ost_dev=t32fs-ost1/ost1
+		! $mdt2_is_available || mdt2_dev=t32fs-mdt2/mdt2
 		wait_update_facet $SINGLEMDS "$ZPOOL list |
 			awk '/^t32fs-mdt1/ { print \\\$1 }'" "t32fs-mdt1" || {
 				error_noexit "import zfs pool failed"
@@ -1712,7 +1771,7 @@ t32_test() {
 		return 1
 	}
 
-	if $r test -f $mdt2_dev; then
+	if $mdt2_is_available; then
 		$r $TUNEFS --dryrun $mdt2_dev || {
 			$r losetup -a
 			error_noexit "tunefs.lustre before mounting the MDT"
@@ -1729,7 +1788,7 @@ t32_test() {
 				error_noexit "Enable mdt quota feature"
 				return 1
 			}
-			if $r test -f $mdt2_dev; then
+			if $mdt2_is_available; then
 				$r $TUNEFS --quota $mdt2_dev || {
 					$r losetup -a
 					error_noexit "Enable mdt quota feature"
@@ -1771,7 +1830,7 @@ t32_test() {
 	}
 	shall_cleanup_mdt=true
 
-	if $r test -f $mdt2_dev; then
+	if $mdt2_is_available; then
 		mopts=mgsnode=$nid,$mopts
 		$r $MOUNT_CMD -o $mopts $mdt2_dev $tmp/mnt/mdt1 || {
 			$r losetup -a
@@ -1799,6 +1858,8 @@ t32_test() {
 			return 1
 		}
 
+		[[ $(facet_fstype mds1) != zfs ]] || import_zpool fs2mds
+
 		$r $TUNEFS --dryrun $fs2mdsdev || {
 			error_noexit "tunefs.lustre before mounting the MDT"
 			return 1
@@ -1943,9 +2004,60 @@ t32_test() {
 			return 1
 		}
 
+		if $r test -f $tmp/list; then
+			#
+			# There is not a Test Framework API to copy files to or
+			# from a remote node.
+			#
+			# LU-2393 - do both sorts on same node to ensure locale
+			# is identical
+			local list_file=$tmp/list
+
+			if $mdt2_is_available; then
+				if [[ -d $tmp/mnt/lustre/striped_dir_old ]] &&
+				   $r test -f $tmp/list2; then
+					list_file=$tmp/list2
+					pushd $tmp/mnt/lustre/striped_dir_old
+				else
+					pushd $tmp/mnt/lustre/remote_dir
+				fi
+			else
+				pushd $tmp/mnt/lustre
+			fi
+			$r cat $list_file | sort -k 6 >$tmp/list.orig
+			ls -Rni --time-style=+%s | sort -k 6 |
+				sed 's/\. / /' >$tmp/list || {
+				error_noexit "ls"
+				return 1
+			}
+			popd
+			#
+			# 32-bit and 64-bit clients use different algorithms to
+			# convert FIDs into inode numbers.  Hence, remove the
+			# inode numbers from the lists, if the original list was
+			# created on an architecture with different number of
+			# bits per "long".
+			#
+			if [ $(t32_bits_per_long $(uname -m)) != \
+				$(t32_bits_per_long $img_arch) ]; then
+				echo "Different number of bits per \"long\"" \
+				     "from the disk image"
+				for list in list.orig list; do
+					sed -i -e 's/^[0-9]\+[ \t]\+//' \
+						  $tmp/$list
+				done
+			fi
+			if ! diff -ub $tmp/list.orig $tmp/list; then
+				error_noexit "list verification failed"
+				return 1
+			fi
+		else
+			echo "list verification skipped"
+		fi
+
 		if [ "$dne_upgrade" != "no" ]; then
 			$LFS mkdir -i 1 -c2 $tmp/mnt/lustre/striped_dir || {
-				error_noexit "set remote dir failed"
+				error_noexit "set striped dir failed"
 				return 1
 			}
 
@@ -1953,9 +2065,10 @@ t32_test() {
 
 			pushd $tmp/mnt/lustre
 			tar -cf - . --exclude=./striped_dir \
+				    --exclude=./striped_dir_old \
 				    --exclude=./remote_dir |
 				tar -xvf - -C striped_dir 1>/dev/null || {
-				error_noexit "cp to remote dir failed"
+				error_noexit "cp to striped dir failed"
 				return 1
 			}
 			popd
@@ -1963,20 +2076,42 @@ t32_test() {
 
 		# If it is upgrade from DNE (2.5), then rename the remote dir,
 		# which is created in 2.5 to striped dir.
-		if $r test -f $mdt2_dev; then
-			stripe_index=$(LFS getdirstripe -i	\
+		if $mdt2_is_available && [[ "$dne_upgrade" != "no" ]]; then
+			stripe_index=$($LFS getdirstripe -i	\
 				       $tmp/mnt/lustre/remote_dir)
-			[ $stripe_index -eq 1 ] || {
-				error_noexit "get index $striped_index failed"
+
+			[[ $stripe_index -eq 1 ]] || {
+				error_noexit "get index \"$stripe_index\"" \
+					     "from remote dir failed"
 				return 1
 			}
 			mv $tmp/mnt/lustre/remote_dir	\
 				$tmp/mnt/lustre/striped_dir/ || {
-				error_noexit "mv failed"
+				error_noexit "mv remote dir failed"
 				return 1
 			}
 		fi
 
+		# If it is upgraded from DNE (2.7), then move the striped dir
+		# which was created in 2.7 to the new striped dir.
+		if $mdt2_is_available && [[ "$dne_upgrade" != "no" ]] &&
+			[[ -d $tmp/mnt/lustre/striped_dir_old ]]; then
+			stripe_count=$($LFS getdirstripe -c	\
+				       $tmp/mnt/lustre/striped_dir_old)
+			[[ $stripe_count -eq 2 ]] || {
+				error_noexit "get count $stripe_count" \
+					     "from striped dir failed"
+				return 1
+			}
+			mv $tmp/mnt/lustre/striped_dir_old	\
+				$tmp/mnt/lustre/striped_dir/ || {
+				error_noexit "mv striped dir failed"
+				return 1
+			}
+		fi
+
+		sync; sleep 5; sync
+		$r $LCTL set_param -n osd*.*.force_sync=1
 		dd if=/dev/zero of=$tmp/mnt/lustre/tmp_file bs=10k count=10 || {
 			error_noexit "dd failed"
 			return 1
@@ -1996,8 +2131,8 @@ t32_test() {
 				pushd $tmp/mnt/lustre
 			fi
 
-			find ! -path "*remote_dir*" ! -name .lustre -type f \
-					-exec sha1sum {} \; |
+			find ! -path "*remote_dir*" ! -path "*striped_dir*" \
+				! -name .lustre -type f -exec sha1sum {} \; |
 				sort -k 2 >$tmp/sha1sums || {
 				popd
 				error_noexit "sha1sum"
@@ -2009,22 +2144,34 @@ t32_test() {
 				return 1
 			fi
 
-			# if upgrade from DNE (2.5), then check remote directory
-			if $r test -f $mdt2_dev; then
-				pushd $tmp/mnt/lustre/striped_dir/remote_dir
-				find ! -name .lustre -type f	\
-							-exec sha1sum {} \; |
-					sort -k 2 >$tmp/sha1sums || {
+			# if upgrade from DNE(2.5), then check remote directory
+			# if upgrade from DNE(2.7), then check striped directory
+			if $mdt2_is_available &&
+			   [[ "$dne_upgrade" != "no" ]]; then
+				local new_dir="$tmp/mnt/lustre/striped_dir"
+				local striped_dir_old="$new_dir/striped_dir_old"
+
+				local dir_list="$new_dir/remote_dir"
+				[[ ! -d $triped_dir_old ]] ||
+					dir_list+=" $striped_dir_old"
+
+				for dir in $dir_list; do
+					pushd $dir
+					find ! -name .lustre -type f	\
+						-exec sha1sum {} \; |
+						sort -k 2 >$tmp/sha1sums || {
+							popd
+							error_noexit "sha1sum"
+							return 1
+						}
 					popd
-					error_noexit "sha1sum"
-					return 1
-				}
-				popd
-				if ! diff -ub $tmp/sha1sums.orig \
-					      $tmp/sha1sums; then
-					error_noexit "sha1sum dne failed"
-					return 1
-				fi
+					if ! diff -ub $tmp/sha1sums.orig \
+						$tmp/sha1sums; then
+						error_noexit "sha1sum $dir" \
+							     "failed"
+						return 1
+					fi
+				done
 			fi
 		else
 			echo "sha1sum verification skipped"
@@ -2037,42 +2184,6 @@ t32_test() {
 			}
 		fi
 
-		if $r test -f $tmp/list; then
-			#
-			# There is not a Test Framework API to copy files to or
-			# from a remote node.
-			#
-			# LU-2393 - do both sorts on same node to ensure locale
-			# is identical
-			$r cat $tmp/list | sort -k 6 >$tmp/list.orig
-			pushd $tmp/mnt/lustre
-			ls -Rni --time-style=+%s | sort -k 6 >$tmp/list || {
-				error_noexit "ls"
-				return 1
-			}
-			popd
-			#
-			# 32-bit and 64-bit clients use different algorithms to
-			# convert FIDs into inode numbers.  Hence, remove the inode
-			# numbers from the lists, if the original list was created
-			# on an architecture with different number of bits per
-			# "long".
-			#
-			if [ $(t32_bits_per_long $(uname -m)) != \
-				$(t32_bits_per_long $img_arch) ]; then
-				echo "Different number of bits per \"long\" from the disk image"
-				for list in list.orig list; do
-					sed -i -e 's/^[0-9]\+[ \t]\+//' $tmp/$list
-				done
-			fi
-			if ! diff -ub $tmp/list.orig $tmp/list; then
-				error_noexit "list verification failed"
-				return 1
-			fi
-		else
-			echo "list verification skipped"
-		fi
-
 		# migrate files/dirs to remote MDT, then move them back
 		if [ $(lustre_version_code mds1) -ge $(version_code 2.7.50) -a \
 		     $dne_upgrade != "no" ]; then
@@ -2136,7 +2247,7 @@ t32_test() {
 		}
 		shall_cleanup_lustre=false
 	else
-		if [ "$dne_upgrade" != "no" ]; then
+		if [[ "$dne_upgrade" != "no" ]] || $mdt2_is_available; then
 			$r $UMOUNT $tmp/mnt/mdt1 || {
 				error_noexit "Unmounting the MDT2"
 				return 1
@@ -2161,6 +2272,12 @@ t32_test() {
 			return 1
 		}
 
+		if [[ $fstype == zfs ]]; then
+			local poolname=t32fs-mdt1
+			$r "$ZPOOL list -H $poolname >/dev/null 2>&1 ||
+				$ZPOOL import -f -d $tmp $poolname"
+		fi
+
 		# mount a second time to make sure we didnt leave upgrade flag on
 		$r $TUNEFS --dryrun $mdt_dev || {
 			$r losetup -a
@@ -2713,7 +2830,6 @@ test_41a() { #bug 14134
 	stop ost1 -f || error "unable to stop OST1"
 	stop_mds || error "Unable to stop MDS"
 	stop_mds || error "Unable to stop MDS on second try"
-	unload_modules_conf || error "unload_modules_conf failed"
 }
 run_test 41a "mount mds with --nosvc and --nomgs"
 
@@ -2763,23 +2879,22 @@ test_41c() {
 
 	cleanup
 	# MDT concurrent start
-	#define OBD_FAIL_TGT_DELAY_CONNECT 0x703
-	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x703"
+	#define OBD_FAIL_TGT_MOUNT_RACE 0x716
+	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x716"
 	start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS &
 	local pid=$!
-	sleep 2
-	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x0"
 	start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS &
+	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x0"
 	local pid2=$!
 	wait $pid2
 	local rc2=$?
 	wait $pid
 	local rc=$?
-	if [ $rc == 0 ] && [ $rc2 == 114 ]; then
+	if [ $rc -eq 0 ] && [ $rc2 -ne 0 ]; then
 		echo "1st MDT start succeed"
-		echo "2nd MDT start failed with EALREADY"
-	elif [ $rc2 == 0 ] && [ $rc == 114 ]; then
-		echo "1st MDT start failed with EALREADY"
+		echo "2nd MDT start failed with $rc2"
+	elif [ $rc2 -eq 0 ] && [ $rc -ne 0 ]; then
+		echo "1st MDT start failed with $rc"
 		echo "2nd MDT start succeed"
 	else
 		stop mds1 -f
@@ -2794,23 +2909,22 @@ test_41c() {
 
 	# OST concurrent start
 
-	#define OBD_FAIL_TGT_DELAY_CONNECT 0x703
-	do_facet ost1 "$LCTL set_param fail_loc=0x703"
+	#define OBD_FAIL_TGT_MOUNT_RACE 0x716
+	do_facet ost1 "$LCTL set_param fail_loc=0x716"
 	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS &
 	pid=$!
-	sleep 2
-	do_facet ost1 "$LCTL set_param fail_loc=0x0"
 	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS &
+	do_facet ost1 "$LCTL set_param fail_loc=0x0"
 	pid2=$!
 	wait $pid2
 	rc2=$?
 	wait $pid
 	rc=$?
-	if [ $rc == 0 ] && [ $rc2 == 114 ]; then
+	if [ $rc -eq 0 ] && [ $rc2 -ne 0 ]; then
 		echo "1st OST start succeed"
-		echo "2nd OST start failed with EALREADY"
-	elif [ $rc2 == 0 ] && [ $rc == 114 ]; then
-		echo "1st OST start failed with EALREADY"
+		echo "2nd OST start failed with $rc2"
+	elif [ $rc2 -eq 0 ] && [ $rc -ne 0 ]; then
+		echo "1st OST start failed with $rc"
 		echo "2nd OST start succeed"
 	else
 		stop_mds -f
@@ -2867,20 +2981,19 @@ test_42() { #bug 14693
 
 	do_facet mgs $LCTL conf_param $FSNAME.sys.some_wrong_param=20
 	cleanup || error "stopping $FSNAME failed with invalid sys param"
-	load_modules
 	setup
 	check_mount || error "client was not mounted with invalid sys param"
 	cleanup || error "stopping $FSNAME failed with invalid sys param"
 }
 run_test 42 "allow client/server mount/unmount with invalid config param"
 
-test_43() {
+test_43a() {
 	[[ $(lustre_version_code mgs) -ge $(version_code 2.5.58) ]] ||
 		{ skip "Need MDS version at least 2.5.58" && return 0; }
 	[ $UID -ne 0 -o $RUNAS_ID -eq 0 ] && skip_env "run as root"
 
 	ID1=${ID1:-501}
-	USER1=$(cat /etc/passwd | grep :$ID1:$ID1: | cut -d: -f1)
+	USER1=$(getent passwd | grep :$ID1:$ID1: | cut -d: -f1)
 	[ -z "$USER1" ] && skip_env "missing user with uid=$ID1 gid=$ID1" &&
 		return
 
@@ -3022,8 +3135,43 @@ test_43() {
 	touch $DIR/$tdir-rootdir/tfile-2 ||
 		error "$ST: root create permission is denied"
 	echo "$ST: root create permission is granted - ok"
+	cleanup || error "cleanup failed with $?"
 }
-run_test 43 "check root_squash and nosquash_nids"
+run_test 43a "check root_squash and nosquash_nids"
+
+test_43b() { # LU-5690
+	[[ $(lustre_version_code mgs) -ge $(version_code 2.7.62) ]] ||
+		{ skip "Need MGS version 2.7.62+"; return; }
+
+	if [[ -z "$fs2mds_DEV" ]]; then
+		is_blkdev $SINGLEMDS $(mdsdevname ${SINGLEMDS//mds/}) &&
+		skip_env "mixed loopback and real device not working" && return
+	fi
+
+	local fs2mdsdev=$(mdsdevname 1_2)
+	local fs2mdsvdev=$(mdsvdevname 1_2)
+
+	# temporarily use fs2mds as fs2mgs
+	local fs2mgs=fs2mds
+	local fs2mgsdev=$fs2mdsdev
+	local fs2mgsvdev=$fs2mdsvdev
+
+	local fsname=test1234
+
+	load_module llite/lustre
+	local client_ip=$(host_nids_address $HOSTNAME $NETTYPE)
+	local host=${client_ip//*./}
+	local net=${client_ip/%$host/}
+	local nosquash_nids=$(h2$NETTYPE $net[$host,$host,$host])
+
+	add $fs2mgs $(mkfs_opts mgs $fs2mgsdev) --fsname=$fsname \
+		--param mdt.root_squash=$RUNAS_ID:$RUNAS_ID \
+		--param mdt.nosquash_nids=$nosquash_nids \
+		--reformat $fs2mgsdev $fs2mgsvdev || error "add fs2mgs failed"
+	start $fs2mgs $fs2mgsdev $MGS_MOUNT_OPTS  || error "start fs2mgs failed"
+	stop $fs2mgs -f || error "stop fs2mgs failed"
+}
+run_test 43b "parse nosquash_nids with commas in expr_list"
 
 umount_client $MOUNT
 cleanup_nocli
@@ -3051,8 +3199,8 @@ test_45() { #17310
 	df -h $MOUNT &
 	log "sleep 60 sec"
 	sleep 60
-	#define OBD_FAIL_PTLRPC_LONG_UNLINK   0x50f
-	do_facet client "$LCTL set_param fail_loc=0x50f"
+#define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK   0x50f
+	do_facet client "$LCTL set_param fail_loc=0x50f fail_val=0"
 	log "sleep 10 sec"
 	sleep 10
 	manual_umount_client --force || error "manual_umount_client failed"
@@ -3512,7 +3660,6 @@ test_50i() {
 	[ "$MDSCOUNT" -lt "2" ] && skip_env "$MDSCOUNT < 2, skipping" && return
 
 	[ $(facet_fstype ost1) == zfs ] && import_zpool ost1
-	load_modules
 	do_facet mds2 "$TUNEFS --param mdc.active=0 $(mdsdevname 2)" ||
 		error "tunefs MDT2 failed"
 	start_mds  || error "Unable to start MDT"
@@ -3665,9 +3812,9 @@ test_52() {
 	echo
 
 	# backup files
-	echo backup files to $TMP/files
+	echo backup files to $TMP/$tdir
 	local files=$(find $DIR/$tdir -type f -newer $TMP/modified_first)
-	copy_files_xattrs $(hostname) $TMP/files $TMP/file_xattrs $files ||
+	copy_files_xattrs $(hostname) $TMP/$tdir $TMP/file_xattrs $files ||
 		error "Unable to copy files"
 
 	umount_client $MOUNT || error "Unable to umount client"
@@ -3694,34 +3841,23 @@ test_52() {
 	do_node $ost1node 'mv '$objects' '${ost1mnt}'/lost+found'
 	[ $? -eq 0 ] || { error "Unable to move objects"; return 14; }
 
-	# recover objects dry-run
-	if [ $(lustre_version_code ost1) -ge $(version_code 2.5.56) ]; then
-		echo "ll_recover_lost_found_objs dry_run"
-		do_node $ost1node \
-			"ll_recover_lost_found_objs -n -d $ost1mnt/O" ||
-			error "ll_recover_lost_found_objs failed"
-	fi
-
-	# recover objects
-	echo "ll_recover_lost_found_objs fix run"
-	do_node $ost1node "ll_recover_lost_found_objs -d $ost1mnt/lost+found" ||
-		 error "ll_recover_lost_found_objs failed"
-
-	# compare restored objects against saved ones
-	diff_files_xattrs $ost1node $ost1tmp/objects $ost1tmp/object_xattrs $objects
-	[ $? -eq 0 ] || error "Unable to diff objects"
-
 	do_node $ost1node "umount $ost1mnt" ||
 		error "Unable to umount ost1 as ldiskfs"
 
 	start_ost || error "Unable to start OST1"
 	mount_client $MOUNT || error "Unable to mount client"
 
+	local REPAIRED=$(do_node $ost1node "$LCTL get_param \
+			 -n osd-ldiskfs.$FSNAME-OST0000.oi_scrub" |
+			 awk '/^lf_repa[ri]*ed/ { print $2 }')
+	[ $REPAIRED -gt 0 ] ||
+		error "Some entry under /lost+found should be repaired"
+
 	# compare files
-	diff_files_xattrs $(hostname) $TMP/files $TMP/file_xattrs $files ||
+	diff_files_xattrs $(hostname) $TMP/$tdir $TMP/file_xattrs $files ||
 		error "Unable to diff files"
 
-	rm -rf $TMP/files $TMP/file_xattrs ||
+	rm -rf $TMP/$tdir $TMP/file_xattrs ||
 		error "Unable to delete temporary files"
 	do_node $ost1node "rm -rf $ost1tmp" ||
 		error "Unable to delete temporary files"
@@ -3822,7 +3958,6 @@ thread_sanity() {
 	local newvalue="${opts}=$(expr $basethr \* $ncpts)"
 	setmodopts -a $modname "$newvalue" oldvalue
 
-	load_modules
 	setup
 	check_mount || return 41
 
@@ -3838,7 +3973,6 @@ thread_sanity() {
 		return $?
 	cleanup
 
-	load_modules
 	setup
 }
 
@@ -4620,6 +4754,59 @@ test_70d() {
 }
 run_test 70d "stop MDT1, mkdir succeed, create remote dir fail"
 
+test_70e() {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
+
+	[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.7.62) ] ||
+		{ skip "Need MDS version at least 2.7.62"; return 0; }
+
+	cleanup || error "cleanup failed with $?"
+
+	local mdsdev=$(mdsdevname 1)
+	local ostdev=$(ostdevname 1)
+	local mdsvdev=$(mdsvdevname 1)
+	local ostvdev=$(ostvdevname 1)
+	local opts_mds="$(mkfs_opts mds1 $mdsdev) --reformat $mdsdev $mdsvdev"
+	local opts_ost="$(mkfs_opts ost1 $ostdev) --reformat $ostdev $ostvdev"
+
+	add mds1 $opts_mds || error "add mds1 failed"
+	start_mdt 1 || error "start mdt1 failed"
+	add ost1 $opts_ost || error "add ost1 failed"
+	start_ost || error "start ost failed"
+	mount_client $MOUNT > /dev/null || error "mount client $MOUNT failed"
+
+	local soc=$(do_facet mds1 "$LCTL get_param -n \
+		    mdt.*MDT0000.sync_lock_cancel")
+	[ $soc == "never" ] || error "SoC enabled on single MDS"
+
+	for i in $(seq 2 $MDSCOUNT); do
+		mdsdev=$(mdsdevname $i)
+		mdsvdev=$(mdsvdevname $i)
+		opts_mds="$(mkfs_opts mds$i $mdsdev) --reformat $mdsdev \
+			  $mdsvdev"
+		add mds$i $opts_mds || error "add mds$i failed"
+		start_mdt $i || error "start mdt$i fail"
+	done
+
+	wait_dne_interconnect
+
+	for i in $(seq $MDSCOUNT); do
+		soc=$(do_facet mds$i "$LCTL get_param -n \
+			mdt.*MDT000$((i - 1)).sync_lock_cancel")
+		[ $soc == "blocking" ] || error "SoC not enabled on DNE"
+	done
+
+	for i in $(seq 2 $MDSCOUNT); do
+		stop_mdt $i || error "stop mdt$i fail"
+	done
+	soc=$(do_facet mds1 "$LCTL get_param -n \
+		mdt.*MDT0000.sync_lock_cancel")
+	[ $soc == "never" ] || error "SoC enabled on single MDS"
+
+	cleanup || error "cleanup failed with $?"
+}
+run_test 70e "Sync-on-Cancel will be enabled by default on DNE"
+
 test_71a() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
 	if combined_mgs_mds; then
@@ -4787,8 +4974,8 @@ test_72() { #LU-2634
 
 	for num in $(seq $MDSCOUNT); do
 		add mds${num} $(mkfs_opts mds$num $(mdsdevname $num)) \
-		--reformat $(mdsdevname $num) $(mdsvdevname $num) ||
-		error "add mds $num failed"
+			--reformat $(mdsdevname $num) $(mdsvdevname $num) ||
+			error "add mds $num failed"
 		do_facet mds${num} "$TUNE2FS -O extents $(mdsdevname $num)" ||
 			error "$TUNE2FS failed on mds${num}"
 	done
@@ -4819,7 +5006,6 @@ test_72() { #LU-2634
 run_test 72 "test fast symlink with extents flag enabled"
 
 test_73() { #LU-3006
-	load_modules
 	[ $(facet_fstype ost1) == zfs ] && import_zpool ost1
 	do_facet ost1 "$TUNEFS --failnode=1.2.3.4@$NETTYPE $(ostdevname 1)" ||
 		error "1st tunefs failed"
@@ -4931,6 +5117,28 @@ test_76b() { # LU-4783
 }
 run_test 76b "verify params log setup correctly"
 
+test_76c() {
+	[[ $(lustre_version_code mgs) -ge $(version_code 2.8.54) ]] ||
+		{ skip "Need MDS version at least 2.4.52" && return 0; }
+	setupall
+	local MASK_PARAM="mdd.*.changelog_mask"
+	echo "Change changelog_mask"
+	do_facet mgs $LCTL set_param -P $MASK_PARAM=-CLOSE ||
+		error "Can't change changlog_mask"
+	wait_update $(facet_host mds) "$LCTL get_param -n $MASK_PARAM |
+		grep 'CLOSE'" ""
+
+	echo "Check the value is stored after mds remount"
+	stop_mds || error "Failed to stop MDS"
+	start_mds || error "Failed to start MDS"
+	local CHANGELOG_MASK=$(do_facet mgs $LCTL get_param -n $MASK_PARAM)
+	echo $CHANGELOG_MASK | grep CLOSE > /dev/null &&
+		error "changelog_mask is not changed"
+
+	stopall
+}
+run_test 76c "verify changelog_mask is applied with set_param -P"
+
 test_77() { # LU-3445
 	local server_version=$(lustre_version_code $SINGLEMDS)
 
@@ -4978,8 +5186,12 @@ test_78() {
 		skip "only applicable to ldiskfs-based MDTs and OSTs" && return
 
 	# reformat the Lustre filesystem with a smaller size
+	local saved_MDSCOUNT=$MDSCOUNT
 	local saved_MDSSIZE=$MDSSIZE
+	local saved_OSTCOUNT=$OSTCOUNT
 	local saved_OSTSIZE=$OSTSIZE
+	MDSCOUNT=1
+	OSTCOUNT=1
 	MDSSIZE=$((MDSSIZE - 20000))
 	OSTSIZE=$((OSTSIZE - 20000))
 	reformat || error "(1) reformat Lustre filesystem failed"
@@ -4994,11 +5206,26 @@ test_78() {
 	local i
 	local file
 	local num_files=100
+
 	mkdir $MOUNT/$tdir || error "(3) mkdir $MOUNT/$tdir failed"
+	$LFS df; $LFS df -i
 	for i in $(seq $num_files); do
 		file=$MOUNT/$tdir/$tfile-$i
-		dd if=/dev/urandom of=$file count=1 bs=1M ||
+		dd if=/dev/urandom of=$file count=1 bs=1M || {
+			$LCTL get_param osc.*.cur*grant*
+			$LFS df; $LFS df -i;
+			# stop creating files if there is no more space
+			if [ ! -e $file ]; then
+				num_files=$((i - 1))
+				break
+			fi
+
+			$LFS getstripe -v $file
+			local ost_idx=$(LFS getstripe -i $file)
+			do_facet ost$((ost_idx + 1)) \
+				$LCTL get_param obdfilter.*.*grant*
 			error "(4) create $file failed"
+		}
 	done
 
 	# unmount the Lustre filesystem
@@ -5110,6 +5337,9 @@ test_78() {
 	# unmount and reformat the Lustre filesystem
 	cleanup || error "(12) cleanup Lustre filesystem failed"
 	combined_mgs_mds || stop_mgs || error "(13) stop mgs failed"
+
+	MDSCOUNT=$saved_MDSCOUNT
+	OSTCOUNT=$saved_OSTCOUNT
 	reformat || error "(14) reformat Lustre filesystem failed"
 }
 run_test 78 "run resize2fs on MDT and OST filesystems"
@@ -5297,8 +5527,9 @@ test_82a() { # LU-4665
 	local i
 	local index
 	local ost_indices
+	local LOV_V1_INSANE_STRIPE_COUNT=65532
 	for i in $(seq $OSTCOUNT); do
-		index=$((RANDOM * 2))
+		index=$(((RANDOM * 2) % LOV_V1_INSANE_STRIPE_COUNT))
 		ost_indices+=" $index"
 	done
 	ost_indices=$(comma_list $ost_indices)
@@ -5404,8 +5635,9 @@ test_82b() { # LU-4665
 	local i
 	local index
 	local ost_indices
+	local LOV_V1_INSANE_STRIPE_COUNT=65532
 	for i in $(seq $OSTCOUNT); do
-		index=$((RANDOM * 2))
+		index=$(((RANDOM * 2) % LOV_V1_INSANE_STRIPE_COUNT))
 		ost_indices+=" $index"
 	done
 	ost_indices=$(comma_list $ost_indices)
@@ -5533,32 +5765,6 @@ test_83() {
 run_test 83 "ENOSPACE on OST doesn't cause message VFS: \
 Busy inodes after unmount ..."
 
-recovery_time_min() {
-	local CONNECTION_SWITCH_MIN=5
-	local CONNECTION_SWITCH_INC=5
-	local CONNECTION_SWITCH_MAX
-	local RECONNECT_DELAY_MAX
-	local INITIAL_CONNECT_TIMEOUT
-	local max
-	local TO_20
-
-	#CONNECTION_SWITCH_MAX=min(50, max($CONNECTION_SWITCH_MIN,$TIMEOUT)
-	(($CONNECTION_SWITCH_MIN>$TIMEOUT)) && \
-		max=$CONNECTION_SWITCH_MIN || max=$TIMEOUT
-	(($max<50)) && CONNECTION_SWITCH_MAX=$max || CONNECTION_SWITCH_MAX=50
-
-	#INITIAL_CONNECT_TIMEOUT = max(CONNECTION_SWITCH_MIN, \
-	#obd_timeout/20)
-	TO_20=$(($TIMEOUT/20))
-	(($CONNECTION_SWITCH_MIN>$TO_20)) && \
-		INITIAL_CONNECT_TIMEOUT=$CONNECTION_SWITCH_MIN || \
-		INITIAL_CONNECT_TIMEOUT=$TO_20
-
-	RECONNECT_DELAY_MAX=$(($CONNECTION_SWITCH_MAX+$CONNECTION_SWITCH_INC+ \
-				$INITIAL_CONNECT_TIMEOUT))
-	echo $((2*$RECONNECT_DELAY_MAX))
-}
-
 test_84() {
 	local facet=$SINGLEMDS
 	local num=$(echo $facet | tr -d "mds")
@@ -5569,19 +5775,21 @@ test_84() {
 	local correct_clients
 	local wrap_up=5
 
-	load_modules
 	echo "start mds service on $(facet_active_host $facet)"
 	start_mds \
 	"-o recovery_time_hard=$time_min,recovery_time_soft=$time_min" $@ ||
 		error "start MDS failed"
 
-	start_ost
-	start_ost2
+	start_ost || error "start OST0000 failed"
+	start_ost2 || error "start OST0001 failed"
 
 	echo "recovery_time=$time_min, timeout=$TIMEOUT, wrap_up=$wrap_up"
 
-	mount_client $MOUNT1 || error "mount failed"
-	mount_client $MOUNT2 || error "mount failed"
+	mount_client $MOUNT1 || error "mount $MOUNT1 failed"
+	mount_client $MOUNT2 || error "mount $MOUNT2 failed"
+	# make sure new superblock labels are sync'd before disabling writes
+	sync_all_data
+	sleep 5
 
 	replay_barrier $SINGLEMDS
 	createmany -o $DIR1/$tfile-%d 1000
@@ -5750,6 +5958,29 @@ test_87() { #LU-6544
 }
 run_test 87 "check if MDT inode can hold EAs with N stripes properly"
 
+test_88() {
+	[ "$(facet_fstype mds1)" == "zfs" ] &&
+		skip "LU-6662: no implementation for ZFS" && return
+
+	load_modules
+
+	add mds1 $(mkfs_opts mds1 $(mdsdevname 1)) \
+		--reformat $(mdsdevname 1) || error "add mds1 failed"
+
+	do_facet mds1 "$TUNEFS $(mdsdevname 1) |
+		grep -e \".*opts:.*errors=remount-ro.*\"" ||
+		error "default mount options is missing"
+
+	add mds1 $(mkfs_opts mds1 $(mdsdevname 1)) \
+		--mountfsoptions="user_xattr,errors=panic" \
+		--reformat $(mdsdevname 1) || error "add mds1 failed"
+
+	do_facet mds1 "$TUNEFS $(mdsdevname 1) |
+		grep -e \".*opts:.*errors=panic.*\"" ||
+		error "user can't override default mount options"
+}
+run_test 88 "check the default mount options can be overridden"
+
 # $1 test directory
 # $2 (optional) value of max_mod_rpcs_in_flight to set
 check_max_mod_rpcs_in_flight() {
@@ -6054,7 +6285,11 @@ test_91() {
 	local nid
 	local found
 
-	load_modules
+	[[ $(lustre_version_code ost1) -ge $(version_code 2.7.63) ]] ||
+		{ skip "Need OST version at least 2.7.63" && return 0; }
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.7.63) ]] ||
+		{ skip "Need MDT version at least 2.7.63" && return 0; }
+
 	start_mds || error "MDS start failed"
 	start_ost || error "unable to start OST"
 	mount_client $MOUNT || error "client start failed"
@@ -6103,6 +6338,360 @@ test_91() {
 }
 run_test 91 "evict-by-nid support"
 
+generate_ldev_conf() {
+	# generate an ldev.conf file
+	local ldevconfpath=$1
+	local fstype=
+	local fsldevformat=""
+	touch $ldevconfpath
+
+	fstype=$(facet_fstype mgs)
+	if [ "$fstype" == "zfs" ]; then
+		fsldevformat="$fstype:"
+	else
+		fsldevformat=""
+	fi
+
+	printf "%s\t-\t%s-MGS0000\t%s%s\n" \
+		$mgs_HOST \
+		$FSNAME \
+		$fsldevformat \
+		$(mgsdevname) > $ldevconfpath
+
+	local mdsfo_host=$mdsfailover_HOST;
+	if [ -z "$mdsfo_host" ]; then
+		mdsfo_host="-"
+	fi
+
+	for num in $(seq $MDSCOUNT); do
+		fstype=$(facet_fstype mds$num)
+		if [ "$fstype" == "zfs" ]; then
+			fsldevformat="$fstype:"
+		else
+			fsldevformat=""
+		fi
+
+		printf "%s\t%s\t%s-MDT%04d\t%s%s\n" \
+			$mds_HOST \
+			$mdsfo_host \
+			$FSNAME \
+			$num \
+			$fsldevformat \
+			$(mdsdevname $num) >> $ldevconfpath
+	done
+
+	local ostfo_host=$ostfailover_HOST;
+	if [ -z "$ostfo_host" ]; then
+		ostfo_host="-"
+	fi
+
+	for num in $(seq $OSTCOUNT); do
+		fstype=$(facet_fstype ost$num)
+		if [ "$fstype" == "zfs" ]; then
+			fsldevformat="$fstype:"
+		else
+			fsldevformat=""
+		fi
+
+		printf "%s\t%s\t%s-OST%04d\t%s%s\n" \
+			$ost_HOST \
+			$ostfo_host \
+			$FSNAME \
+			$num \
+			$fsldevformat \
+			$(ostdevname $num) >> $ldevconfpath
+	done
+
+	echo "----- $ldevconfpath -----"
+	cat $ldevconfpath
+	echo "--- END $ldevconfpath ---"
+
+}
+
+generate_nids() {
+	# generate a nids file (mapping between hostname to nid)
+	# looks like we only have the MGS nid available to us
+	# so just echo that to a file
+	local nidspath=$1
+	echo -e "${mgs_HOST}\t${MGSNID}" > $nidspath
+
+	echo "----- $nidspath -----"
+	cat $nidspath
+	echo "--- END $nidspath ---"
+}
+
+compare_ldev_output() {
+	ldev_output=$1
+	expected_output=$2
+
+	sort $expected_output -o $expected_output
+	sort $ldev_output -o $ldev_output
+
+	echo "-- START OF LDEV OUTPUT --"
+	cat $ldev_output
+	echo "--- END OF LDEV OUTPUT ---"
+
+	echo "-- START OF EXPECTED OUTPUT --"
+	cat $expected_output
+	echo "--- END OF EXPECTED OUTPUT ---"
+
+	diff $expected_output $ldev_output
+	return $?
+}
+
+test_92() {
+	if [ -z "$LDEV" ]; then
+		error "ldev is missing!"
+	fi
+
+	local LDEVCONFPATH=$TMP/ldev.conf
+	local NIDSPATH=$TMP/nids
+
+	echo "Host is $(hostname)"
+
+	generate_ldev_conf $LDEVCONFPATH
+	generate_nids $NIDSPATH
+
+	# echo the mgs nid and compare it to environment variable MGSNID
+	# also, ldev.conf and nids is a server side thing, use the OSS
+	# hostname
+	local output
+	output=$($LDEV -c $LDEVCONFPATH -H $ost_HOST -n $NIDSPATH echo %m)
+
+	echo "-- START OF LDEV OUTPUT --"
+	echo -e "$output"
+	echo "--- END OF LDEV OUTPUT ---"
+
+	# ldev failed, error
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev failed to execute!"
+	fi
+
+	# need to process multiple lines because of combined MGS and MDS
+	echo -e $output | awk '{ print $2 }' | while read -r line ; do
+		if [ "$line" != "$MGSNID" ]; then
+			rm $LDEVCONFPATH $NIDSPATH
+			error "ldev failed mgs nid '$line', expected '$MGSNID'"
+		fi
+	done
+
+	rm $LDEVCONFPATH $NIDSPATH
+}
+run_test 92 "ldev returns MGS NID correctly in command substitution"
+
+test_93() {
+	[ $MDSCOUNT -lt 3 ] && skip "needs >= 3 MDTs" && return
+
+	reformat
+	#start mgs or mgs/mdt0
+	if ! combined_mgs_mds ; then
+		start_mgs
+		start_mdt 1
+	else
+		start_mdt 1
+	fi
+
+	start_ost || error "OST0 start fail"
+
+	#define OBD_FAIL_MGS_WRITE_TARGET_DELAY	 0x90e
+	do_facet mgs "$LCTL set_param fail_val = 10 fail_loc=0x8000090e"
+	for num in $(seq 2 $MDSCOUNT); do
+		start_mdt $num &
+	done
+
+	mount_client $MOUNT || error "mount client fails"
+	wait_osc_import_state mds ost FULL
+	wait_osc_import_state client ost FULL
+	check_mount || error "check_mount failed"
+
+	cleanup || error "cleanup failed with $?"
+}
+run_test 93 "register mulitple MDT at the same time"
+
+test_94() {
+	if [ -z "$LDEV" ]; then
+		error "ldev is missing!"
+	fi
+
+	local LDEVCONFPATH=$TMP/ldev.conf
+	local NIDSPATH=$TMP/nids
+
+	generate_ldev_conf $LDEVCONFPATH
+	generate_nids $NIDSPATH
+
+	local LDEV_OUTPUT=$TMP/ldev-output.txt
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME > $LDEV_OUTPUT
+
+	# ldev failed, error
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT
+		error "ldev failed to execute!"
+	fi
+
+	# expected output
+	local EXPECTED_OUTPUT=$TMP/ldev-expected.txt
+
+	printf "%s-MGS0000\n" $FSNAME > $EXPECTED_OUTPUT
+
+	for num in $(seq $MDSCOUNT); do
+		printf "%s-MDT%04d\n" $FSNAME $num >> $EXPECTED_OUTPUT
+	done
+
+	for num in $(seq $OSTCOUNT); do
+		printf "%s-OST%04d\n" $FSNAME $num >> $EXPECTED_OUTPUT
+	done
+
+	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT
+
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
+		error "ldev failed to produce the correct hostlist!"
+	fi
+
+	rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
+}
+run_test 94 "ldev outputs correct labels for file system name query"
+
+test_95() {
+	if [ -z "$LDEV" ]; then
+		error "ldev is missing!"
+	fi
+
+	local LDEVCONFPATH=$TMP/ldev.conf
+	local NIDSPATH=$TMP/nids
+
+	generate_ldev_conf $LDEVCONFPATH
+	generate_nids $NIDSPATH
+
+	# SUCCESS CASES
+	# file sys filter
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME &>/dev/null
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -F failed!"
+	fi
+
+	# local filter
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -l  &>/dev/null
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -l failed!"
+	fi
+
+	# foreign filter
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -f &>/dev/null
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -f failed!"
+	fi
+
+	# all filter
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a &>/dev/null
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -a failed!"
+	fi
+
+	# FAILURE CASES
+	# all & file sys
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -F $FSNAME &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -a and -F incorrectly succeeded"
+	fi
+
+	# all & foreign
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -f &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -a and -f incorrectly succeeded"
+	fi
+
+	# all & local
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -l &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -a and -l incorrectly succeeded"
+	fi
+
+	# foreign & local
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -f -l &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -f and -l incorrectly succeeded"
+	fi
+
+	# file sys & local
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -l &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -F and -l incorrectly succeeded"
+	fi
+
+	# file sys & foreign
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -f &>/dev/null
+	if [ $? -eq 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH
+		error "ldev label filtering w/ -F and -f incorrectly succeeded"
+	fi
+
+	rm $LDEVCONFPATH $NIDSPATH
+}
+run_test 95 "ldev should only allow one label filter"
+
+test_96() {
+	if [ -z "$LDEV" ]; then
+		error "ldev is missing!"
+	fi
+
+	local LDEVCONFPATH=$TMP/ldev.conf
+	local NIDSPATH=$TMP/nids
+
+	generate_ldev_conf $LDEVCONFPATH
+	generate_nids $NIDSPATH
+
+	local LDEV_OUTPUT=$TMP/ldev-output.txt
+	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -H $mgs_HOST \
+		echo %H-%b | \
+		awk '{print $2}' > $LDEV_OUTPUT
+
+	# ldev failed, error
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT
+		error "ldev failed to execute!"
+	fi
+
+	# expected output
+	local EXPECTED_OUTPUT=$TMP/ldev-expected-output.txt
+
+	echo "$mgs_HOST-$(facet_fstype mgs)" > $EXPECTED_OUTPUT
+
+	if [ "$mgs_HOST" == "$mds_HOST" ]; then
+		for num in $(seq $MDSCOUNT); do
+			echo "$mds_HOST-$(facet_fstype mds$num)" \
+			>> $EXPECTED_OUTPUT
+		done
+	fi
+
+	if [ "$mgs_HOST" == "$ost_HOST" ]; then
+		for num in $(seq $OSTCOUNT); do
+			echo "$ost_HOST-$(facet_fstype ost$num)" \
+			>> $EXPECTED_OUTPUT
+		done
+	fi
+
+	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT
+
+	if [ $? -ne 0 ]; then
+		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
+		error "ldev failed to produce the correct output!"
+	fi
+
+	rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
+}
+run_test 96 "ldev returns hostname and backend fs correctly in command sub"
+
 if ! combined_mgs_mds ; then
 	stop mgs
 fi