X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftests%2Frecovery-small.sh;h=0cdc7f76a0e9cac581112863417bee28f6a44c54;hp=0f379a7a60e3ebb77b768eb2ee68cef139e792c5;hb=9db3b77445d8b96f1f4a20ab03a6b8df3aec01e4;hpb=6af4ec4c33cc2ea97094c5fab69d9d637d2d82d3

diff --git a/lustre/tests/recovery-small.sh b/lustre/tests/recovery-small.sh
index 0f379a7..0cdc7f7 100755
--- a/lustre/tests/recovery-small.sh
+++ b/lustre/tests/recovery-small.sh
@@ -2,8 +2,8 @@
 
 set -e
 
-#         bug  5494 5493
-ALWAYS_EXCEPT="24   52 $RECOVERY_SMALL_EXCEPT"
+#         bug  5493  LU2034
+ALWAYS_EXCEPT="52    60      $RECOVERY_SMALL_EXCEPT"
 
 export MULTIOP=${MULTIOP:-multiop}
 PTLDEBUG=${PTLDEBUG:--1}
@@ -19,6 +19,10 @@ require_dsh_mds || exit 0
 #                                   1  2.5  2.5    4    4          (min)"
 [ "$SLOW" = "no" ] && EXCEPT_SLOW="17  26a  26b    50   51     57"
 
+[ $(facet_fstype $SINGLEMDS) = "zfs" ] &&
+# bug number for skipped test:	      LU-2194 LU-2547
+	ALWAYS_EXCEPT="$ALWAYS_EXCEPT 19b     24a 24b"
+
 build_test_filter
 
 # Allow us to override the setup if we already have a mounted system by
@@ -29,7 +33,7 @@ CLEANUP=${CLEANUP:-""}
 check_and_setup_lustre
 
 assert_DIR
-rm -rf $DIR/[df][0-9]*
+rm -rf $DIR/d[0-9]* $DIR/f.${TESTSUITE}*
 
 test_1() {
 	local f1="$DIR/$tfile"
@@ -146,56 +150,70 @@ run_test 9 "pause bulk on OST (bug 1420)"
 
 #bug 1521
 test_10() {
-    do_facet client mcreate $DIR/$tfile        || return 1
-    drop_bl_callback "chmod 0777 $DIR/$tfile"  || echo "evicted as expected"
-    # wait for the mds to evict the client
-    #echo "sleep $(($TIMEOUT*2))"
-    #sleep $(($TIMEOUT*2))
-    do_facet client touch $DIR/$tfile || echo "touch failed, evicted"
-    do_facet client checkstat -v -p 0777 $DIR/$tfile  || return 3
-    do_facet client "munlink $DIR/$tfile"
+	do_facet client mcreate $DIR/$tfile ||
+		{ error "mcreate failed: $?"; return 1; }
+	drop_bl_callback "chmod 0777 $DIR/$tfile"  || echo "evicted as expected"
+	# wait for the mds to evict the client
+	#echo "sleep $(($TIMEOUT*2))"
+	#sleep $(($TIMEOUT*2))
+	do_facet client touch $DIR/$tfile || echo "touch failed, evicted"
+	do_facet client checkstat -v -p 0777 $DIR/$tfile ||
+		{ error "client checkstat failed: $?"; return 3; }
+	do_facet client "munlink $DIR/$tfile"
+	# allow recovery to complete
+	client_up || client_up || sleep $TIMEOUT
 }
 run_test 10 "finish request on server after client eviction (bug 1521)"
 
 #bug 2460
 # wake up a thread waiting for completion after eviction
 test_11(){
-    do_facet client $MULTIOP $DIR/$tfile Ow  || return 1
-    do_facet client $MULTIOP $DIR/$tfile or  || return 2
+	do_facet client $MULTIOP $DIR/$tfile Ow  ||
+		{ error "multiop write failed: $?"; return 1; }
+	do_facet client $MULTIOP $DIR/$tfile or  ||
+		{ error "multiop read failed: $?"; return 2; }
 
-    cancel_lru_locks osc
+	cancel_lru_locks osc
 
-    do_facet client $MULTIOP $DIR/$tfile or  || return 3
-    drop_bl_callback $MULTIOP $DIR/$tfile Ow || echo "evicted as expected"
+	do_facet client $MULTIOP $DIR/$tfile or  ||
+		{ error "multiop read failed: $?"; return 3; }
+	drop_bl_callback $MULTIOP $DIR/$tfile Ow || echo "evicted as expected"
 
-    do_facet client munlink $DIR/$tfile  || return 4
+	do_facet client munlink $DIR/$tfile ||
+		{ error "munlink failed: $?"; return 4; }
+	# allow recovery to complete
+	client_up || client_up || sleep $TIMEOUT
 }
 run_test 11 "wake up a thread waiting for completion after eviction (b=2460)"
 
 #b=2494
 test_12(){
-    $LCTL mark $MULTIOP $DIR/$tfile OS_c
-    do_facet $SINGLEMDS "lctl set_param fail_loc=0x115"
-    clear_failloc $SINGLEMDS $((TIMEOUT * 2)) &
-    multiop_bg_pause $DIR/$tfile OS_c || return 1
-    PID=$!
+	$LCTL mark $MULTIOP $DIR/$tfile OS_c
+	do_facet $SINGLEMDS "lctl set_param fail_loc=0x115"
+	clear_failloc $SINGLEMDS $((TIMEOUT * 2)) &
+	multiop_bg_pause $DIR/$tfile OS_c ||
+		{ error "multiop failed: $?"; return 1; }
+	PID=$!
 #define OBD_FAIL_MDS_CLOSE_NET           0x115
-    kill -USR1 $PID
-    echo "waiting for multiop $PID"
-    wait $PID || return 2
-    do_facet client munlink $DIR/$tfile  || return 3
+	kill -USR1 $PID
+	echo "waiting for multiop $PID"
+	wait $PID || { error "wait for multiop faile: $?"; return 2; }
+	do_facet client munlink $DIR/$tfile ||
+		{ error "client munlink failed: $?"; return 3; }
+	# allow recovery to complete
+	client_up || client_up || sleep $TIMEOUT
 }
 run_test 12 "recover from timed out resend in ptlrpcd (b=2494)"
 
 # Bug 113, check that readdir lost recv timeout works.
 test_13() {
-    mkdir -p $DIR/$tdir || return 1
-    touch $DIR/$tdir/newentry || return
+	mkdir -p $DIR/$tdir || { error "mkdir failed: $?"; return 1; }
+	touch $DIR/$tdir/newentry || { error "touch failed: $?"; return 2; }
 # OBD_FAIL_MDS_READPAGE_NET|OBD_FAIL_ONCE
-    do_facet $SINGLEMDS "lctl set_param fail_loc=0x80000104"
-    ls $DIR/$tdir || return 3
-    do_facet $SINGLEMDS "lctl set_param fail_loc=0"
-    rm -rf $DIR/$tdir || return 4
+	do_facet $SINGLEMDS "lctl set_param fail_loc=0x80000104"
+	ls $DIR/$tdir || { error "ls failed: $?"; return 3; }
+	do_facet $SINGLEMDS "lctl set_param fail_loc=0"
+	rm -rf $DIR/$tdir || { error "remove test dir failed: $?"; return 4; }
 }
 run_test 13 "mdc_readpage restart test (bug 1138)"
 
@@ -395,20 +413,26 @@ test_19a() {
 	local BEFORE=`date +%s`
 	local EVICT
 
-	mount_client $DIR2
+	mount_client $DIR2 || error "failed to mount $DIR2"
+
+	# cancel cached locks from OST to avoid eviction from it
+	cancel_lru_locks osc
 
-	do_facet client mcreate $DIR/$tfile        || return 1
-	drop_ldlm_cancel "chmod 0777 $DIR2"
+	do_facet client "stat $DIR > /dev/null"  ||
+		error "failed to stat $DIR: $?"
+	drop_ldlm_cancel "chmod 0777 $DIR2" ||
+		error "failed to chmod $DIR2"
 
 	umount_client $DIR2
-	do_facet client "munlink $DIR/$tfile"
 
 	# let the client reconnect
-	sleep 5
+	client_reconnect
 	EVICT=$(do_facet client $LCTL get_param mdc.$FSNAME-MDT*.state | \
 	    awk -F"[ [,]" '/EVICTED]$/ { if (mx<$4) {mx=$4;} } END { print mx }')
 
-	[ ! -z "$EVICT" ] && [[ $EVICT -gt $BEFORE ]] || error "no eviction"
+	[ ! -z "$EVICT" ] && [[ $EVICT -gt $BEFORE ]] ||
+		(do_facet client $LCTL get_param mdc.$FSNAME-MDT*.state;
+		    error "no eviction: $EVICT before:$BEFORE")
 }
 run_test 19a "test expired_lock_main on mds (2867)"
 
@@ -416,22 +440,61 @@ test_19b() {
 	local BEFORE=`date +%s`
 	local EVICT
 
-	mount_client $DIR2
+	mount_client $DIR2 || error "failed to mount $DIR2: $?"
 
-	do_facet client $MULTIOP $DIR/$tfile Ow  || return 1
-	drop_ldlm_cancel $MULTIOP $DIR2/$tfile Ow
-	umount_client $DIR2
-	do_facet client munlink $DIR/$tfile
+	# cancel cached locks from MDT to avoid eviction from it
+	cancel_lru_locks mdc
+
+	do_facet client $MULTIOP $DIR/$tfile Ow ||
+		error "failed to run multiop: $?"
+	drop_ldlm_cancel $MULTIOP $DIR2/$tfile Ow ||
+		error "failed to ldlm_cancel: $?"
+
+	umount_client $DIR2 || error "failed to unmount $DIR2: $?"
+	do_facet client munlink $DIR/$tfile ||
+		error "failed to unlink $DIR/$tfile: $?"
 
 	# let the client reconnect
-	sleep 5
+	client_reconnect
 	EVICT=$(do_facet client $LCTL get_param osc.$FSNAME-OST*.state | \
 	    awk -F"[ [,]" '/EVICTED]$/ { if (mx<$4) {mx=$4;} } END { print mx }')
 
-	[ ! -z "$EVICT" ] && [[ $EVICT -gt $BEFORE ]] || error "no eviction"
+	[ ! -z "$EVICT" ] && [[ $EVICT -gt $BEFORE ]] ||
+		(do_facet client $LCTL get_param osc.$FSNAME-OST*.state;
+		    error "no eviction: $EVICT before:$BEFORE")
 }
 run_test 19b "test expired_lock_main on ost (2867)"
 
+test_19c() {
+	local BEFORE=`date +%s`
+
+	mount_client $DIR2
+	$LCTL set_param ldlm.namespaces.*.early_lock_cancel=0
+
+	mkdir -p $DIR1/$tfile
+	stat $DIR1/$tfile
+
+#define OBD_FAIL_PTLRPC_CANCEL_RESEND 0x516
+	do_facet mds $LCTL set_param fail_loc=0x80000516
+
+	touch $DIR2/$tfile/file1 &
+	PID1=$!
+	# let touch to get blocked on the server
+	sleep 2
+
+	wait $PID1
+	$LCTL set_param ldlm.namespaces.*.early_lock_cancel=1
+	umount_client $DIR2
+
+	# let the client reconnect
+	sleep 5
+	EVICT=$(do_facet client $LCTL get_param mdc.$FSNAME-MDT*.state |
+	   awk -F"[ [,]" '/EVICTED]$/ { if (mx<$4) {mx=$4;} } END { print mx }')
+
+	[ -z "$EVICT" ] || [[ $EVICT -le $BEFORE ]] || error "eviction happened"
+}
+run_test 19c "check reconnect and lock resend do not trigger expired_lock_main"
+
 test_20a() {	# bug 2983 - ldlm_handle_enqueue cleanup
 	remote_ost_nodsh && skip "remote OST with nodsh" && return 0
 
@@ -690,7 +753,7 @@ test_23() { #b=4561
 }
 run_test 23 "client hang when close a file after mds crash"
 
-test_24() { # bug 11710 details correct fsync() behavior
+test_24a() { # bug 11710 details correct fsync() behavior
 	remote_ost_nodsh && skip "remote OST with nodsh" && return 0
 
 	mkdir -p $DIR/$tdir
@@ -704,9 +767,10 @@ test_24() { # bug 11710 details correct fsync() behavior
 	rc=$?
 	lctl set_param fail_loc=0x0
 	client_reconnect
-	[ $rc -eq 0 ] && error_ignore 5494 "multiop didn't fail fsync: rc $rc" || true
+	[ $rc -eq 0 ] &&
+		error_ignore bz5494 "multiop didn't fail fsync: rc $rc" || true
 }
-run_test 24 "fsync error (should return error)"
+run_test 24a "fsync error (should return error)"
 
 wait_client_evicted () {
 	local facet=$1
@@ -714,10 +778,44 @@ wait_client_evicted () {
 	local varsvc=${facet}_svc
 
 	wait_update $(facet_active_host $facet) \
-                "lctl get_param -n *.${!varsvc}.num_exports | cut -d' ' -f2" \
-                $((exports - 1)) $3
+		"lctl get_param -n *.${!varsvc}.num_exports | cut -d' ' -f2" \
+		$((exports - 1)) $3
 }
 
+test_24b() {
+	remote_ost_nodsh && skip "remote OST with nodsh" && return 0
+
+	dmesg -c > /dev/null
+	mkdir -p $DIR/$tdir
+	lfs setstripe $DIR/$tdir -s 0 -i 0 -c 1
+	cancel_lru_locks osc
+	multiop_bg_pause $DIR/$tdir/$tfile-1 Ow8192_yc ||
+		error "mulitop Ow8192_yc failed"
+
+	MULTI_PID1=$!
+	multiop_bg_pause $DIR/$tdir/$tfile-2 Ow8192_c ||
+		error "mulitop Ow8192_c failed"
+
+	MULTI_PID2=$!
+	ost_evict_client
+
+	kill -USR1 $MULTI_PID1
+	wait $MULTI_PID1
+	rc1=$?
+	kill -USR1 $MULTI_PID2
+	wait $MULTI_PID2
+	rc2=$?
+	lctl set_param fail_loc=0x0
+	client_reconnect
+	[ $rc1 -eq 0 -o $rc2 -eq 0 ] &&
+	error_ignore bz5494 "multiop didn't fail fsync: $rc1 or close: $rc2" ||
+		true
+
+	dmesg | grep "dirty page discard:" ||
+		error "no discarded dirty page found!"
+}
+run_test 24b "test dirty page discard due to client eviction"
+
 test_26a() {      # was test_26 bug 5921 - evict dead exports by pinger
 # this test can only run from a client on a separate node.
 	remote_ost || { skip "local OST" && return 0; }
@@ -826,6 +924,7 @@ test_29a() { # bug 22273 - error adding new clients
 	# fail abort so client will be new again
 	fail_abort $SINGLEMDS
 	client_up || error "reconnect failed"
+	wait_osc_import_state $SINGLEMDS ost FULL
 	return 0
 }
 run_test 29a "error adding new clients doesn't cause LBUG (bug 22273)"
@@ -861,7 +960,8 @@ test_50() {
 	rc=$?
 	echo writemany returned $rc
 	#these may fail because of eviction due to slow AST response.
-	[ $rc -eq 0 ] || error_ignore 13652 "writemany returned rc $rc" || true
+	[ $rc -eq 0 ] ||
+		error_ignore bz13652 "writemany returned rc $rc" || true
 }
 run_test 50 "failover MDS under load"
 
@@ -880,19 +980,21 @@ test_51() {
 	SEQ="1 5 10 $(seq $TIMEOUT 5 $(($TIMEOUT+10)))"
         echo will failover at $SEQ
         for i in $SEQ
-          do
-          echo failover in $i sec
-          sleep $i
-          facet_failover $SINGLEMDS
+        do
+		#echo failover in $i sec
+		log "test_$testnum: failover in $i sec"
+		sleep $i
+		facet_failover $SINGLEMDS
         done
 	# client process should see no problems even though MDS went down
 	# and recovery was interrupted
 	sleep $TIMEOUT
         kill -USR1 $CLIENT_PID
-	wait $CLIENT_PID 
+	wait $CLIENT_PID
 	rc=$?
 	echo writemany returned $rc
-	[ $rc -eq 0 ] || error_ignore 13652 "writemany returned rc $rc" || true
+	[ $rc -eq 0 ] ||
+		error_ignore bz13652 "writemany returned rc $rc" || true
 }
 run_test 51 "failover MDS during recovery"
 
@@ -961,57 +1063,58 @@ test_55() {
 
 	mkdir -p $DIR/$tdir
 
+	# Minimum pass speed is 2MBps
+	local ddtimeout=64
+	# LU-2887/LU-3089 - set min pass speed to 500KBps
+	[ "$(facet_fstype ost1)" = "zfs" ] && ddtimeout=256
+
 	# first dd should be finished quickly
 	$LFS setstripe -c 1 -i 0 $DIR/$tdir/$tfile-1
-	dd if=/dev/zero of=$DIR/$tdir/$tfile-1 bs=32M count=4  &
+	dd if=/dev/zero of=$DIR/$tdir/$tfile-1 bs=32M count=4 &
 	DDPID=$!
 	count=0
 	echo  "step1: testing ......"
-	while [ true ]; do
-	    if [ -z `ps x | awk '$1 == '$DDPID' { print $5 }'` ]; then break; fi
-	    count=$[count+1]
-	    if [ $count -gt 64 ]; then
-		error "dd should be finished!"
-	    fi
-	    sleep 1
-	done	
+	while kill -0 $DDPID 2> /dev/null; do
+		let count++
+		if [ $count -gt $ddtimeout ]; then
+			error "dd should be finished!"
+		fi
+		sleep 1
+	done
 	echo "(dd_pid=$DDPID, time=$count)successful"
 
 	$LFS setstripe -c 1 -i 0 $DIR/$tdir/$tfile-2
 	#define OBD_FAIL_OST_DROP_REQ            0x21d
 	do_facet ost1 lctl set_param fail_loc=0x0000021d
 	# second dd will be never finished
-	dd if=/dev/zero of=$DIR/$tdir/$tfile-2 bs=32M count=4  &	
+	dd if=/dev/zero of=$DIR/$tdir/$tfile-2 bs=32M count=4 &
 	DDPID=$!
 	count=0
 	echo  "step2: testing ......"
-	while [ $count -le 64 ]; do
-	    dd_name="`ps x | awk '$1 == '$DDPID' { print $5 }'`"	    
-	    if [ -z  $dd_name ]; then 
-                ls -l $DIR/$tdir
-		echo  "debug: (dd_name=$dd_name, dd_pid=$DDPID, time=$count)"
-		error "dd shouldn't be finished!"
-	    fi
-	    count=$[count+1]
-	    sleep 1
-	done	
+	while [ $count -le $ddtimeout ]; do
+		if ! kill -0 $DDPID 2> /dev/null; then
+			ls -l $DIR/$tdir
+			error "dd shouldn't be finished! (time=$count)"
+		fi
+		let count++
+		sleep 1
+	done
 	echo "(dd_pid=$DDPID, time=$count)successful"
 
 	#Recover fail_loc and dd will finish soon
 	do_facet ost1 lctl set_param fail_loc=0
 	count=0
 	echo  "step3: testing ......"
-	while [ true ]; do
-	    if [ -z `ps x | awk '$1 == '$DDPID' { print $5 }'` ]; then break; fi
-	    count=$[count+1]
-	    if [ $count -gt 500 ]; then
-		error "dd should be finished!"
-	    fi
-	    sleep 1
-	done	
+	while kill -0 $DDPID 2> /dev/null; do
+		let count++
+		if [ $count -gt $((ddtimeout + 440)) ]; then
+			error "dd should be finished!"
+		fi
+		sleep 1
+	done
 	echo "(dd_pid=$DDPID, time=$count)successful"
 
-        rm -rf $DIR/$tdir
+	rm -rf $DIR/$tdir
 }
 run_test 55 "ost_brw_read/write drops timed-out read/write request"
 
@@ -1059,7 +1162,10 @@ test_58() { # bug 11546
         lctl set_param fail_loc=0
         drop_bl_callback rm -f $DIR/$tfile
         wait $pid
-        do_facet client "df $DIR"
+        # the first 'df' could tigger the eviction caused by
+        # 'drop_bl_callback', and it's normal case.
+        # but the next 'df' should return successfully.
+        do_facet client "df $DIR" || do_facet client "df $DIR"
 }
 run_test 58 "Eviction in the middle of open RPC reply processing"
 
@@ -1082,12 +1188,12 @@ test_59() { # bug 10589
 run_test 59 "Read cancel race on client eviction"
 
 err17935 () {
-    # we assume that all md changes are in the MDT0 changelog
-    if [ $MDSCOUNT -gt 1 ]; then
-	error_ignore 17935 $*
-    else
-	error $*
-    fi
+	# we assume that all md changes are in the MDT0 changelog
+	if [ $MDSCOUNT -gt 1 ]; then
+		error_ignore bz17935 $*
+	else
+		error $*
+	fi
 }
 
 test_60() {
@@ -1169,6 +1275,16 @@ test_61()
 }
 run_test 61 "Verify to not reuse orphan objects - bug 17025"
 
+# test_62 as seen it b2_1 please do not reuse test_62
+#test_62()
+#{
+#	zconf_umount `hostname` $DIR
+#	#define OBD_FAIL_PTLRPC_DELAY_IMP_FULL   0x516
+#	lctl set_param fail_loc=0x516
+#	mount_client $DIR
+#}
+#run_test 62 "Verify connection flags race - bug LU-1716"
+
 check_cli_ir_state()
 {
         local NODE=${1:-$HOSTNAME}
@@ -1189,8 +1305,8 @@ check_target_ir_state()
 
         st=$(do_facet $target "lctl get_param -n $recovery_proc |
                                awk '/IR:/{ print \\\$2}'")
-        [ $st != ON -o $st != OFF ] ||
-                error "Error state $st, must be ON or OFF"
+	[ $st != ON -o $st != OFF -o $st != ENABLED -o $st != DISABLED ] ||
+		error "Error state $st, must be ENABLED or DISABLED"
         echo -n $st
 }
 
@@ -1276,19 +1392,30 @@ target_instance_match()
 
 test_100()
 {
-        do_facet mgs $LCTL list_param mgs.*.ir_timeout ||
-                { skip "MGS without IR support"; return 0; }
+	do_facet mgs $LCTL list_param mgs.*.ir_timeout ||
+		{ skip "MGS without IR support"; return 0; }
 
-        # disable IR
-        set_ir_status disabled
+	# MDT was just restarted in the previous test, make sure everything
+	# is all set.
+	local cnt=30
+	while [ $cnt -gt 0 ]; do
+		nidtbl_versions_match && break
+		sleep 1
+		cnt=$((cnt - 1))
+	done
+
+	# disable IR
+	set_ir_status disabled
+
+	local prev_ver=$(nidtbl_version_client client)
 
         local saved_FAILURE_MODE=$FAILURE_MODE
         [ $(facet_host mgs) = $(facet_host ost1) ] && FAILURE_MODE="SOFT"
         fail ost1
 
         # valid check
-        nidtbl_versions_match &&
-                error "version must differ due to IR disabled"
+	[ $(nidtbl_version_client client) -eq $prev_ver ] ||
+		error "version must not change due to IR disabled"
         target_instance_match ost1 || error "instance mismatch"
 
         # restore env
@@ -1381,10 +1508,11 @@ test_103()
         stop mds1
 
         # We need this test because mds is like a client in IR context.
-        start mds1 $MDSDEV1 || error "MDS should start w/o mgs"
+        start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS ||
+		error "MDS should start w/o mgs"
 
         # start mgs and remount mds w/ ir
-        start mgs $MGSDEV
+        start mgs $(mgsdevname) $MGS_MOUNT_OPTS
         clients_up
 
         # remount client so that fsdb will be created on the MGS
@@ -1444,7 +1572,8 @@ test_105()
 
         # make sure lustre mount at $rcli disabling IR
         local ir_state=$(check_cli_ir_state $rcli)
-	[ $ir_state = DISABLED -o $ir_state = "OFF" ] || error "IR state must be DISABLED at $rcli"
+	[ $ir_state = "DISABLED" -o $ir_state = "OFF" ] ||
+		error "IR state must be DISABLED at $rcli"
 
 	# Since the client just mounted, its last_rcvd entry is not on disk.
 	# Send an RPC so exp_need_sync forces last_rcvd to commit this export
@@ -1479,6 +1608,206 @@ test_105()
 }
 run_test 105 "IR: NON IR clients support"
 
-complete $(basename $0) $SECONDS
+cleanup_106() {
+	trap 0
+	umount_client $DIR2
+	debugrestore
+}
+
+test_106() { # LU-1789
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.3.50) ]] ||
+		{ skip "Need MDS version at least 2.3.50"; return 0; }
+
+#define OBD_FAIL_MDC_LIGHTWEIGHT         0x805
+	$LCTL set_param fail_loc=0x805
+
+	debugsave
+	trap cleanup_106 EXIT
+
+	# enable lightweight flag on mdc connection
+	mount_client $DIR2
+
+	local MDS_NEXP=$(do_facet $SINGLEMDS \
+			 lctl get_param -n mdt.${mds1_svc}.num_exports |
+			 cut -d' ' -f2)
+	$LCTL set_param fail_loc=0
+
+	touch $DIR2/$tfile || error "failed to create empty file"
+	replay_barrier $SINGLEMDS
+
+	$LCTL set_param debug=console
+	$LCTL clear
+	facet_failover $SINGLEMDS
+
+	# lightweight connection must be evicted
+	touch -c $DIR2/$tfile || true
+	$LCTL dk $TMP/lustre-log-$TESTNAME.log
+	evicted=`awk '/This client was evicted by .*MDT0000/ {
+				      print;
+		      }' $TMP/lustre-log-$TESTNAME.log`
+	[ -z "$evicted" ] && error "lightweight client not evicted by mds"
+
+	# and all operations performed by lightweight client should be
+	# synchronous, so the file created before mds restart should be there
+	$CHECKSTAT -t file $DIR/$tfile || error "file not present"
+	rm -f $DIR/$tfile
+
+	cleanup_106
+}
+run_test 106 "lightweight connection support"
+
+test_107 () {
+	local CLIENT_PID
+	local close_pid
+
+	mkdir -p $DIR/$tdir
+	# OBD_FAIL_MDS_REINT_NET_REP   0x119
+	do_facet $SINGLEMDS lctl set_param fail_loc=0x119
+	multiop $DIR/$tdir D_c &
+	close_pid=$!
+	mkdir $DIR/$tdir/dir_106 &
+	CLIENT_PID=$!
+	do_facet $SINGLEMDS lctl set_param fail_loc=0
+	fail $SINGLEMDS
+
+	wait $CLIENT_PID || rc=$?
+	checkstat -t dir $DIR/$tdir/dir_106 || return 1
+
+	kill -USR1 $close_pid
+	wait $close_pid || return 2
+
+	return $rc
+}
+run_test 107 "drop reint reply, then restart MDT"
+
+test_110a () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	drop_request "$LFS mkdir -i $MDTIDX $remote_dir" ||
+					error "lfs mkdir failed"
+	local diridx=$($GETSTRIPE -M $remote_dir)
+	[ $diridx -eq $MDTIDX ] || error "$diridx != $MDTIDX"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+}
+run_test 110a "create remote directory: drop client req"
+
+test_110b () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	drop_reint_reply "$LFS mkdir -i $MDTIDX $remote_dir" ||
+					error "lfs mkdir failed"
+
+	diridx=$($GETSTRIPE -M $remote_dir)
+	[ $diridx -eq $MDTIDX ] || error "$diridx != $MDTIDX"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+}
+run_test 110b "create remote directory: drop Master rep"
+
+test_110c () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	drop_update_reply $((MDTIDX + 1)) "$LFS mkdir -i $MDTIDX $remote_dir" ||
+						error "lfs mkdir failed"
+
+	diridx=$($GETSTRIPE -M $remote_dir)
+	[ $diridx -eq $MDTIDX ] || error "$diridx != $MDTIDX"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+}
+run_test 110c "create remote directory: drop update rep on slave MDT"
+
+test_110d () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	$LFS mkdir -i $MDTIDX $remote_dir || error "lfs mkdir failed"
+
+	drop_request "rm -rf $remote_dir" || error "rm remote dir failed"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+
+	return 0
+}
+run_test 110d "remove remote directory: drop client req"
+
+test_110e () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	$LFS mkdir -i $MDTIDX $remote_dir  || error "lfs mkdir failed"
+	drop_reint_reply "rm -rf $remote_dir" || error "rm remote dir failed"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+
+	return 0
+}
+run_test 110e "remove remote directory: drop master rep"
+
+test_110f () {
+	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return 0
+	local remote_dir=$DIR/$tdir/remote_dir
+	local MDTIDX=1
+
+	mkdir -p $DIR/$tdir
+	$LFS mkdir -i $MDTIDX $remote_dir || error "lfs mkdir failed"
+	drop_update_reply $MDTIDX "rm -rf $remote_dir" ||
+					error "rm remote dir failed"
+
+	rm -rf $DIR/$tdir || error "rmdir failed"
+}
+run_test 110f "remove remote directory: drop slave rep"
+
+# LU-2844 mdt prepare fail should not cause umount oops
+test_111 ()
+{
+	[[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.3.62) ]] ||
+		{ skip "Need MDS version at least 2.3.62"; return 0; }
+
+	local mdsdev=$(mdsdevname ${SINGLEMDS//mds/})
+#define OBD_FAIL_MDS_CHANGELOG_INIT 0x151
+	do_facet $SINGLEMDS lctl set_param fail_loc=0x151
+	stop $SINGLEMDS || error "stop MDS failed"
+	start $SINGLEMDS $mdsdev && error "start MDS should fail"
+	do_facet $SINGLEMDS lctl set_param fail_loc=0
+	start $SINGLEMDS $mdsdev || error "start MDS failed"
+}
+run_test 111 "mdd setup fail should not cause umount oops"
+
+# LU-793
+test_112a() {
+	remote_ost_nodsh && skip "remote OST with nodsh" && return 0
+
+	do_facet_random_file client $TMP/$tfile 100K ||
+		error_noexit "Create random file $TMP/$tfile"
+
+	pause_bulk "cp $TMP/$tfile $DIR/$tfile" $TIMEOUT ||
+		error_noexit "Can't pause_bulk copy"
+
+	df $DIR
+	# expect cmp to succeed, client resent bulk
+	cmp $TMP/$tfile $DIR/$tfile ||
+		error_noexit "Wrong data has been written"
+	rm $DIR/$tfile ||
+		error_noexit "Can't remove file"
+	rm $TMP/$tfile
+}
+run_test 112a "bulk resend while orignal request is in progress"
+
+complete $SECONDS
 check_and_cleanup_lustre
 exit_status