X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ftests%2Frecovery-small.sh;h=6014d52748a201a3c3eb8f805b4a5e5b63fc7818;hb=39eabbad40b25b1950ae21c9ba72e8de4098565b;hp=d5dae905d6ba1ee4e7ef710f9bc52b273638e8c2;hpb=8dc028eb94256d2b8e7b640170aad6f674dde511;p=fs%2Flustre-release.git

diff --git a/lustre/tests/recovery-small.sh b/lustre/tests/recovery-small.sh
index d5dae90..6014d52 100755
--- a/lustre/tests/recovery-small.sh
+++ b/lustre/tests/recovery-small.sh
@@ -1,77 +1,40 @@
-#!/bin/sh
+#!/bin/bash
 
 set -e
 
+#         bug  5494 7288 5493
+ALWAYS_EXCEPT="24   27   52 $RECOVERY_SMALL_EXCEPT"
+
+# also long tests: 19, 21a, 21e, 21f, 23, 27 				
+#                                     1     2.5    4    4          (min)"  
+[ "$SLOW" = "no" ] && EXCEPT_SLOW="17    26b    50   51     57" 
+
+PTLDEBUG=${PTLDEBUG:--1}
 LUSTRE=${LUSTRE:-`dirname $0`/..}
-UPCALL=${UPCALL:-$PWD/recovery-small-upcall.sh}
 . $LUSTRE/tests/test-framework.sh
-
 init_test_env $@
-
-. ${CONFIG:=$LUSTRE/tests/cfg/local.sh}
+. ${CONFIG:=$LUSTRE/tests/cfg/$NAME.sh}
 
 build_test_filter
 
-
 # Allow us to override the setup if we already have a mounted system by
 # setting SETUP=" " and CLEANUP=" "
-SETUP=${SETUP:-"setup"}
-CLEANUP=${CLEANUP:-"cleanup"}
-
-
-make_config() {
-    rm -f $XMLCONFIG
-    add_mds mds --dev $MDSDEV --size $MDSSIZE
-    add_lov lov1 mds --stripe_sz $STRIPE_BYTES\
-	--stripe_cnt $STRIPES_PER_OBJ --stripe_pattern 0
-    add_ost ost --lov lov1 --dev $OSTDEV --size $OSTSIZE
-    add_ost ost2 --lov lov1 --dev ${OSTDEV}-2 --size $OSTSIZE
-    add_client client mds --lov lov1 --path $MOUNT
-}
-
-setup() {
-    make_config
-    start ost --reformat $OSTLCONFARGS 
-    start ost2 --reformat $OSTLCONFARGS 
-    [ "$DAEMONFILE" ] && $LCTL debug_daemon start $DAEMONFILE $DAEMONSIZE
-    start mds $MDSLCONFARGS --reformat
-    zconf_mount $MOUNT
-}
-
-cleanup() {
-    zconf_umount $MOUNT
-    stop mds ${FORCE} $MDSLCONFARGS
-    stop ost2 ${FORCE} --dump cleanup.log
-    stop ost ${FORCE} --dump cleanup.log
-}
-
-replay() {
-    do_mds "sync"
-    do_mds 'echo -e "device \$mds1\\nprobe\\nnotransno\\nreadonly" | lctl'
-    do_client "$1" &
-    shutdown_mds -f
-    start_mds
-    wait
-    do_client "df -h $MOUNT" # trigger failover, if we haven't already
-}
+SETUP=${SETUP:-""}
+CLEANUP=${CLEANUP:-""}
 
-if [ ! -z "$EVAL" ]; then
-    eval "$EVAL"
-    exit $?
-fi
-
-REFORMAT=--reformat $SETUP
-unset REFORMAT
+cleanup_and_setup_lustre
+rm -rf $DIR/${TESTSUITE}/[df][0-9]* # bug 13798 new t-f tdir staff
+rm -rf $DIR/[df][0-9]*
 
 test_1() {
     drop_request "mcreate $MOUNT/1"  || return 1
-    drop_reply "mcreate $MOUNT/2"    || return 2
+    drop_reint_reply "mcreate $MOUNT/2"    || return 2
 }
 run_test 1 "mcreate: drop req, drop rep"
 
 test_2() {
     drop_request "tchmod 111 $MOUNT/2"  || return 1
-    drop_reply "tchmod 666 $MOUNT/2"    || return 2
+    drop_reint_reply "tchmod 666 $MOUNT/2"    || return 2
 }
 run_test 2 "chmod: drop req, drop rep"
 
@@ -82,93 +45,86 @@ test_3() {
 run_test 3 "stat: drop req, drop rep"
 
 test_4() {
-    do_facet client "cp /etc/resolv.conf $MOUNT/resolv.conf" || return 1
-    drop_request "cat $MOUNT/resolv.conf > /dev/null"   || return 2
-    drop_reply "cat $MOUNT/resolv.conf > /dev/null"     || return 3
+    do_facet client "cp /etc/inittab $MOUNT/inittab" || return 1
+    drop_request "cat $MOUNT/inittab > /dev/null"   || return 2
+    drop_reply "cat $MOUNT/inittab > /dev/null"     || return 3
 }
 run_test 4 "open: drop req, drop rep"
 
 test_5() {
-    drop_request "mv $MOUNT/resolv.conf $MOUNT/renamed" || return 1
-    drop_reply "mv $MOUNT/renamed $MOUNT/renamed-again" || return 2
+    drop_request "mv $MOUNT/inittab $MOUNT/renamed" || return 1
+    drop_reint_reply "mv $MOUNT/renamed $MOUNT/renamed-again" || return 2
+    do_facet client "checkstat -v $MOUNT/renamed-again"  || return 3
 }
 run_test 5 "rename: drop req, drop rep"
 
+[ ! -e $MOUNT/renamed-again ] && cp /etc/inittab $MOUNT/renamed-again
 test_6() {
     drop_request "mlink $MOUNT/renamed-again $MOUNT/link1" || return 1
-    drop_reply "mlink $MOUNT/renamed-again $MOUNT/link2"   || return 2
+    drop_reint_reply "mlink $MOUNT/renamed-again $MOUNT/link2"   || return 2
 }
 run_test 6 "link: drop req, drop rep"
 
+[ ! -e $MOUNT/link1 ] && mlink $MOUNT/renamed-again $MOUNT/link1
+[ ! -e $MOUNT/link2 ] && mlink $MOUNT/renamed-again $MOUNT/link2
 test_7() {
     drop_request "munlink $MOUNT/link1"   || return 1
-    drop_reply "munlink $MOUNT/link2"     || return 2
+    drop_reint_reply "munlink $MOUNT/link2"     || return 2
 }
 run_test 7 "unlink: drop req, drop rep"
 
-
 #bug 1423
 test_8() {
-    drop_reply "touch $MOUNT/renamed"    || return 1
+    drop_reint_reply "touch $MOUNT/$tfile"    || return 1
 }
 run_test 8 "touch: drop rep (bug 1423)"
 
-
 #bug 1420
 test_9() {
-    pause_bulk "cp /etc/profile $MOUNT"       || return 1
-    do_facet client "cp /etc/termcap $MOUNT"  || return 2
+    pause_bulk "cp /etc/profile $MOUNT/$tfile"       || return 1
+    do_facet client "cp /etc/termcap $MOUNT/${tfile}.2"  || return 2
     do_facet client "sync"
-    do_facet client "rm $MOUNT/termcap $MOUNT/profile" || return 3
+    do_facet client "rm $MOUNT/$tfile $MOUNT/${tfile}.2" || return 3
 }
 run_test 9 "pause bulk on OST (bug 1420)"
 
 #bug 1521
 test_10() {
-    do_facet client mcreate $MOUNT/f10        || return 1
-    drop_bl_callback "chmod 0777 $MOUNT/f10"  || return 2
+    do_facet client mcreate $MOUNT/$tfile        || return 1
+    drop_bl_callback "chmod 0777 $MOUNT/$tfile"  || echo "evicted as expected"
     # wait for the mds to evict the client
     #echo "sleep $(($TIMEOUT*2))"
     #sleep $(($TIMEOUT*2))
-    do_facet client touch  $MOUNT/f10 || echo "touch failed, evicted"
-    do_facet client checkstat -v -p 0777 $MOUNT/f10  || return 3
-    do_facet client "munlink $MOUNT/f10"
+    do_facet client touch $MOUNT/$tfile || echo "touch failed, evicted"
+    do_facet client checkstat -v -p 0777 $MOUNT/$tfile  || return 3
+    do_facet client "munlink $MOUNT/$tfile"
 }
 run_test 10 "finish request on server after client eviction (bug 1521)"
 
 #bug 2460
-# wake up a thead waiting for completion after eviction
+# wake up a thread waiting for completion after eviction
 test_11(){
     do_facet client multiop $MOUNT/$tfile Ow  || return 1
     do_facet client multiop $MOUNT/$tfile or  || return 2
 
-    cancel_lru_locks OSC
+    cancel_lru_locks osc
 
     do_facet client multiop $MOUNT/$tfile or  || return 3
-    drop_bl_callback multiop $MOUNT/$tfile Ow  || 
-        echo "client evicted, as expected"
+    drop_bl_callback multiop $MOUNT/$tfile Ow || echo "evicted as expected"
 
     do_facet client munlink $MOUNT/$tfile  || return 4
 }
-run_test 11 "wake up a thead waiting for completion after eviction (b=2460)"
-
-clear_failloc() {
-    facet=$1
-    pause=$2
-    sleep $pause
-    echo "clearing fail_loc on $facet"
-    do_facet $facet "sysctl -w lustre.fail_loc=0"
-}
+run_test 11 "wake up a thread waiting for completion after eviction (b=2460)"
 
 #b=2494
 test_12(){
     $LCTL mark multiop $MOUNT/$tfile OS_c 
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x115"
+    clear_failloc $SINGLEMDS $((TIMEOUT * 2)) &
     multiop $MOUNT/$tfile OS_c  &
     PID=$!
 #define OBD_FAIL_MDS_CLOSE_NET           0x115
-    DDPID=$!
-    do_facet mds "sysctl -w lustre.fail_loc=0x115"
-    clear_failloc mds $((TIMEOUT * 2)) &
+    sleep 2
     kill -USR1 $PID
     echo "waiting for multiop $PID"
     wait $PID || return 2
@@ -176,5 +132,748 @@ test_12(){
 }
 run_test 12 "recover from timed out resend in ptlrpcd (b=2494)"
 
-$CLEANUP
+# Bug 113, check that readdir lost recv timeout works.
+test_13() {
+    mkdir $MOUNT/readdir || return 1
+    touch $MOUNT/readdir/newentry || return
+# OBD_FAIL_MDS_READPAGE_NET|OBD_FAIL_ONCE
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000104"
+    ls $MOUNT/readdir || return 3
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+    rm -rf $MOUNT/readdir || return 4
+}
+run_test 13 "mdc_readpage restart test (bug 1138)"
+
+# Bug 113, check that readdir lost send timeout works.
+test_14() {
+    mkdir $MOUNT/readdir
+    touch $MOUNT/readdir/newentry
+# OBD_FAIL_MDS_SENDPAGE|OBD_FAIL_ONCE
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000106"
+    ls $MOUNT/readdir || return 1
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+}
+run_test 14 "mdc_readpage resend test (bug 1138)"
+
+test_15() {
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000128"
+    touch $DIR/$tfile && return 1
+    return 0
+}
+run_test 15 "failed open (-ENOMEM)"
+
+READ_AHEAD=`cat $LPROC/llite/*/max_read_ahead_mb | head -n 1`
+stop_read_ahead() {
+   for f in $LPROC/llite/*/max_read_ahead_mb; do 
+      echo 0 > $f
+   done
+}
+
+start_read_ahead() {
+   for f in $LPROC/llite/*/max_read_ahead_mb; do 
+      echo $READ_AHEAD > $f
+   done
+}
+
+test_16() {
+    do_facet client cp /etc/termcap $MOUNT
+    sync
+    stop_read_ahead
+
+#define OBD_FAIL_PTLRPC_BULK_PUT_NET 0x504 | OBD_FAIL_ONCE
+    do_facet ost1 "sysctl -w lustre.fail_loc=0x80000504"
+    cancel_lru_locks osc
+    # OST bulk will time out here, client resends
+    do_facet client "cmp /etc/termcap $MOUNT/termcap" || return 1
+    do_facet ost1 sysctl -w lustre.fail_loc=0
+    # give recovery a chance to finish (shouldn't take long)
+    sleep $TIMEOUT
+    do_facet client "cmp /etc/termcap $MOUNT/termcap" || return 2
+    start_read_ahead
+}
+run_test 16 "timeout bulk put, don't evict client (2732)"
+
+test_17() {
+    # OBD_FAIL_PTLRPC_BULK_GET_NET 0x0503 | OBD_FAIL_ONCE
+    # OST bulk will time out here, client retries
+    do_facet ost1 sysctl -w lustre.fail_loc=0x80000503
+    # need to ensure we send an RPC
+    do_facet client cp /etc/termcap $DIR/$tfile
+    sync
+
+    sleep $TIMEOUT
+    do_facet ost1 sysctl -w lustre.fail_loc=0
+    do_facet client "df $DIR"
+    # expect cmp to succeed, client resent bulk
+    do_facet client "cmp /etc/termcap $DIR/$tfile" || return 3
+    do_facet client "rm $DIR/$tfile" || return 4
+    return 0
+}
+run_test 17 "timeout bulk get, don't evict client (2732)"
+
+test_18a() {
+    [ -z ${ost2_svc} ] && skip "needs 2 osts" && return 0
+
+    do_facet client mkdir -p $MOUNT/$tdir
+    f=$MOUNT/$tdir/$tfile
+
+    cancel_lru_locks osc
+    pgcache_empty || return 1
+
+    # 1 stripe on ost2
+    lfs setstripe $f -s $((128 * 1024)) -i 1 -c 1
+
+    do_facet client cp /etc/termcap $f
+    sync
+    local osc2dev=`grep ${ost2_svc}-osc- $LPROC/devices | egrep -v 'MDT' | awk '{print $1}'`
+    $LCTL --device $osc2dev deactivate || return 3
+    # my understanding is that there should be nothing in the page
+    # cache after the client reconnects?     
+    rc=0
+    pgcache_empty || rc=2
+    $LCTL --device $osc2dev activate
+    rm -f $f
+    return $rc
+}
+run_test 18a "manual ost invalidate clears page cache immediately"
+
+test_18b() {
+    do_facet client mkdir -p $MOUNT/$tdir
+    f=$MOUNT/$tdir/$tfile
+    f2=$MOUNT/$tdir/${tfile}-2
+
+    cancel_lru_locks osc
+    pgcache_empty || return 1
+
+    # shouldn't have to set stripe size of count==1
+    lfs setstripe $f -s $((128 * 1024)) -i 0 -c 1
+    lfs setstripe $f2 -s $((128 * 1024)) -i 0 -c 1
+
+    do_facet client cp /etc/termcap $f
+    sync
+    ost_evict_client
+    # allow recovery to complete
+    sleep $((TIMEOUT + 2))
+    # my understanding is that there should be nothing in the page
+    # cache after the client reconnects?     
+    rc=0
+    pgcache_empty || rc=2
+    rm -f $f $f2
+    return $rc
+}
+run_test 18b "eviction and reconnect clears page cache (2766)"
+
+test_19a() {
+    f=$MOUNT/$tfile
+    do_facet client mcreate $f        || return 1
+    drop_ldlm_cancel "chmod 0777 $f"  || echo "evicted as expected"
+
+    do_facet client checkstat -v -p 0777 $f  || echo evicted
+    # let the client reconnect
+    sleep 5
+    do_facet client "munlink $f"
+}
+run_test 19a "test expired_lock_main on mds (2867)"
+
+test_19b() {
+    f=$MOUNT/$tfile
+    do_facet client multiop $f Ow  || return 1
+    do_facet client multiop $f or  || return 2
+
+    cancel_lru_locks osc
+
+    do_facet client multiop $f or  || return 3
+    drop_ldlm_cancel multiop $f Ow  || echo "client evicted, as expected"
+
+    do_facet client munlink $f  || return 4
+}
+run_test 19b "test expired_lock_main on ost (2867)"
+
+test_20a() {	# bug 2983 - ldlm_handle_enqueue cleanup
+	mkdir -p $DIR/$tdir
+	multiop $DIR/$tdir/${tfile} O_wc &
+	MULTI_PID=$!
+	sleep 1
+	cancel_lru_locks osc
+#define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
+	do_facet ost1 sysctl -w lustre.fail_loc=0x80000308
+	kill -USR1 $MULTI_PID
+	wait $MULTI_PID
+	rc=$?
+	[ $rc -eq 0 ] && error "multiop didn't fail enqueue: rc $rc" || true
+}
+run_test 20a "ldlm_handle_enqueue error (should return error)" 
+
+test_20b() {	# bug 2986 - ldlm_handle_enqueue error during open
+	mkdir -p $DIR/$tdir
+	touch $DIR/$tdir/${tfile}
+	cancel_lru_locks osc
+#define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
+	do_facet ost1 sysctl -w lustre.fail_loc=0x80000308
+	dd if=/etc/hosts of=$DIR/$tdir/$tfile && \
+		error "didn't fail open enqueue" || true
+}
+run_test 20b "ldlm_handle_enqueue error (should return error)"
+
+test_21a() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       close_pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000129"
+       multiop $DIR/$tdir-2/f Oc &
+       open_pid=$!
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000115"
+       kill -USR1 $close_pid
+       cancel_lru_locks mdc
+       wait $close_pid || return 1
+       wait $open_pid || return 2
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 3
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 4
+
+       rm -rf $DIR/$tdir-*
+}
+run_test 21a "drop close request while close and open are both in flight"
+
+test_21b() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       close_pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000107"
+       mcreate $DIR/$tdir-2/f &
+       open_pid=$!
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       kill -USR1 $close_pid
+       cancel_lru_locks mdc
+       wait $close_pid || return 1
+       wait $open_pid || return 3
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 4
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 5
+       rm -rf $DIR/$tdir-*
+}
+run_test 21b "drop open request while close and open are both in flight"
+
+test_21c() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       close_pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000107"
+       mcreate $DIR/$tdir-2/f &
+       open_pid=$!
+       sleep 3
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000115"
+       kill -USR1 $close_pid
+       cancel_lru_locks mdc
+       wait $close_pid || return 1
+       wait $open_pid || return 2
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 2
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 3
+       rm -rf $DIR/$tdir-*
+}
+run_test 21c "drop both request while close and open are both in flight"
+
+test_21d() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000129"
+       multiop $DIR/$tdir-2/f Oc &
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000122"
+       kill -USR1 $pid
+       cancel_lru_locks mdc
+       wait $pid || return 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 2
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 3
+
+       rm -rf $DIR/$tdir-*
+}
+run_test 21d "drop close reply while close and open are both in flight"
+
+test_21e() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000119"
+       touch $DIR/$tdir-2/f &
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       kill -USR1 $pid
+       cancel_lru_locks mdc
+       wait $pid || return 1
+
+       sleep $TIMEOUT
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 2
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 3
+       rm -rf $DIR/$tdir-*
+}
+run_test 21e "drop open reply while close and open are both in flight"
+
+test_21f() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000119"
+       touch $DIR/$tdir-2/f &
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000122"
+       kill -USR1 $pid
+       cancel_lru_locks mdc
+       wait $pid || return 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 2
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 3
+       rm -rf $DIR/$tdir-*
+}
+run_test 21f "drop both reply while close and open are both in flight"
+
+test_21g() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000119"
+       touch $DIR/$tdir-2/f &
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000115"
+       kill -USR1 $pid
+       cancel_lru_locks mdc
+       wait $pid || return 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 2
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 3
+       rm -rf $DIR/$tdir-*
+}
+run_test 21g "drop open reply and close request while close and open are both in flight"
+
+test_21h() {
+       mkdir -p $DIR/$tdir-1
+       mkdir -p $DIR/$tdir-2
+       multiop $DIR/$tdir-1/f O_c &
+       pid=$!
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000107"
+       touch $DIR/$tdir-2/f &
+       touch_pid=$!
+       sleep 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000122"
+       cancel_lru_locks mdc
+       kill -USR1 $pid
+       wait $pid || return 1
+       do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+       wait $touch_pid || return 2
+
+       $CHECKSTAT -t file $DIR/$tdir-1/f || return 3
+       $CHECKSTAT -t file $DIR/$tdir-2/f || return 4
+       rm -rf $DIR/$tdir-*
+}
+run_test 21h "drop open request and close reply while close and open are both in flight"
+
+# bug 3462 - multiple MDC requests
+test_22() {
+    f1=$DIR/${tfile}-1
+    f2=$DIR/${tfile}-2
     
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000115"
+    multiop $f2 Oc &
+    close_pid=$!
+
+    sleep 1
+    multiop $f1 msu || return 1
+
+    cancel_lru_locks mdc
+    do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+
+    wait $close_pid || return 2
+    rm -rf $f2 || return 4
+}
+run_test 22 "drop close request and do mknod"
+
+test_23() { #b=4561
+    multiop $DIR/$tfile O_c &
+    pid=$!
+    # give a chance for open
+    sleep 5
+
+    # try the close
+    drop_request "kill -USR1 $pid"
+
+    fail $SINGLEMDS
+    wait $pid || return 1
+    return 0
+}
+run_test 23 "client hang when close a file after mds crash"
+
+test_24() {	# bug 2248 - eviction fails writeback but app doesn't see it
+	mkdir -p $DIR/$tdir
+	cancel_lru_locks osc
+	multiop $DIR/$tdir/$tfile Owy_wyc &
+	MULTI_PID=$!
+	usleep 500
+	ost_evict_client
+	usleep 500
+	kill -USR1 $MULTI_PID
+	wait $MULTI_PID
+	rc=$?
+	sysctl -w lustre.fail_loc=0x0
+	client_reconnect
+	[ $rc -eq 0 ] && error_ignore 5494 "multiop didn't fail fsync: rc $rc" || true
+}
+run_test 24 "fsync error (should return error)"
+
+test_26() {      # bug 5921 - evict dead exports by pinger
+# this test can only run from a client on a separate node.
+	remote_ost || skip "local OST" && return
+	remote_mds || skip "local MDS" && return
+	OST_FILE=$LPROC/obdfilter/${ost1_svc}/num_exports
+        OST_EXP="`do_facet ost1 cat $OST_FILE`"
+	OST_NEXP1=`echo $OST_EXP | cut -d' ' -f2`
+	echo starting with $OST_NEXP1 OST exports
+# OBD_FAIL_PTLRPC_DROP_RPC 0x505
+	do_facet client sysctl -w lustre.fail_loc=0x505
+	# evictor takes up to 2.25x to evict.  But if there's a 
+	# race to start the evictor from various obds, the loser
+	# might have to wait for the next ping.
+	echo Waiting for $(($TIMEOUT * 4)) secs
+	sleep $(($TIMEOUT * 4))
+        OST_EXP="`do_facet ost1 cat $OST_FILE`"
+	OST_NEXP2=`echo $OST_EXP | cut -d' ' -f2`
+	echo ending with $OST_NEXP2 OST exports
+	do_facet client sysctl -w lustre.fail_loc=0x0
+        [ $OST_NEXP1 -le $OST_NEXP2 ] && error "client not evicted"
+	return 0
+}
+run_test 26 "evict dead exports"
+
+test_26b() {      # bug 10140 - evict dead exports by pinger
+	client_df
+        zconf_mount `hostname` $MOUNT2 || error "Failed to mount $MOUNT2"
+        sleep 1 # wait connections being established
+	MDS_FILE=$LPROC/mdt/${mds1_svc}/num_exports
+        MDS_NEXP1="`do_facet $SINGLEMDS cat $MDS_FILE | cut -d' ' -f2`"
+	OST_FILE=$LPROC/obdfilter/${ost1_svc}/num_exports
+        OST_NEXP1="`do_facet ost1 cat $OST_FILE | cut -d' ' -f2`"
+	echo starting with $OST_NEXP1 OST and $MDS_NEXP1 MDS exports
+	zconf_umount `hostname` $MOUNT2 -f
+	# evictor takes up to 2.25x to evict.  But if there's a 
+	# race to start the evictor from various obds, the loser
+	# might have to wait for the next ping.
+	echo Waiting for $(($TIMEOUT * 4)) secs
+	sleep $(($TIMEOUT * 4))
+        OST_NEXP2="`do_facet ost1 cat $OST_FILE | cut -d' ' -f2`"
+        MDS_NEXP2="`do_facet $SINGLEMDS cat $MDS_FILE | cut -d' ' -f2`"
+	echo ending with $OST_NEXP2 OST and $MDS_NEXP2 MDS exports
+        [ $OST_NEXP1 -le $OST_NEXP2 ] && error "client not evicted from OST"
+        [ $MDS_NEXP1 -le $MDS_NEXP2 ] && error "client not evicted from MDS"
+	return 0
+}
+run_test 26b "evict dead exports"
+
+test_27() {
+	remote_mds && { skip "remote MDS" && return 0; }
+	mkdir -p $DIR/$tdir
+	writemany -q -a $DIR/$tdir/$tfile 0 5 &
+	CLIENT_PID=$!
+	sleep 1
+	FAILURE_MODE="SOFT"
+	facet_failover $SINGLEMDS
+#define OBD_FAIL_OSC_SHUTDOWN            0x407
+	sysctl -w lustre.fail_loc=0x80000407
+	# need to wait for reconnect
+	echo -n waiting for fail_loc
+	while [ `sysctl -n lustre.fail_loc` -eq -2147482617 ]; do
+	    sleep 1
+	    echo -n .
+	done
+	facet_failover $SINGLEMDS
+	#no crashes allowed!
+        kill -USR1 $CLIENT_PID
+	wait $CLIENT_PID 
+	true
+}
+run_test 27 "fail LOV while using OSC's"
+
+test_28() {      # bug 6086 - error adding new clients
+	do_facet client mcreate $MOUNT/$tfile       || return 1
+	drop_bl_callback "chmod 0777 $MOUNT/$tfile" ||echo "evicted as expected"
+	#define OBD_FAIL_MDS_CLIENT_ADD 0x12f
+	do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x8000012f"
+	# fail once (evicted), reconnect fail (fail_loc), ok
+	df || (sleep 10; df) || (sleep 10; df) || error "reconnect failed"
+	rm -f $MOUNT/$tfile
+	fail $SINGLEMDS		# verify MDS last_rcvd can be loaded
+}
+run_test 28 "handle error adding new clients (bug 6086)"
+
+test_50() {
+	mkdir -p $DIR/$tdir
+	# put a load of file creates/writes/deletes
+	writemany -q $DIR/$tdir/$tfile 0 5 &
+	CLIENT_PID=$!
+	echo writemany pid $CLIENT_PID
+	sleep 10
+	FAILURE_MODE="SOFT"
+	fail $SINGLEMDS
+	# wait for client to reconnect to MDS
+	sleep 60
+	fail $SINGLEMDS
+	sleep 60
+	fail $SINGLEMDS
+	# client process should see no problems even though MDS went down
+	sleep $TIMEOUT
+        kill -USR1 $CLIENT_PID
+	wait $CLIENT_PID 
+	rc=$?
+	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
+}
+run_test 50 "failover MDS under load"
+
+test_51() {
+	mkdir -p $DIR/$tdir
+	# put a load of file creates/writes/deletes
+	writemany -q $DIR/$tdir/$tfile 0 5 &
+	CLIENT_PID=$!
+	sleep 1
+	FAILURE_MODE="SOFT"
+	facet_failover $SINGLEMDS
+	# failover at various points during recovery
+	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
+        done
+	# client process should see no problems even though MDS went down
+	# and recovery was interrupted
+	sleep $TIMEOUT
+        kill -USR1 $CLIENT_PID
+	wait $CLIENT_PID 
+	rc=$?
+	echo writemany returned $rc
+	[ $rc -eq 0 ] || error_ignore 13652 "writemany returned rc $rc" || true
+}
+run_test 51 "failover MDS during recovery"
+
+test_52_guts() {
+	do_facet client "writemany -q -a $DIR/$tdir/$tfile 300 5" &
+	CLIENT_PID=$!
+	echo writemany pid $CLIENT_PID
+	sleep 10
+	FAILURE_MODE="SOFT"
+	fail ost1
+	rc=0
+	wait $CLIENT_PID || rc=$?
+	# active client process should see an EIO for down OST
+	[ $rc -eq 5 ] && { echo "writemany correctly failed $rc" && return 0; }
+	# but timing or failover setup may allow success
+	[ $rc -eq 0 ] && { echo "writemany succeeded" && return 0; }
+	echo "writemany returned $rc"
+	return $rc
+}
+
+test_52() {
+	mkdir -p $DIR/$tdir
+	test_52_guts
+	rc=$?
+	[ $rc -ne 0 ] && { return $rc; }
+	# wait for client to reconnect to OST
+	sleep 30
+	test_52_guts
+	rc=$?
+	[ $rc -ne 0 ] && { return $rc; }
+	sleep 30
+	test_52_guts
+	rc=$?
+	client_reconnect
+	#return $rc
+}
+run_test 52 "failover OST under load"
+
+# test of open reconstruct
+test_53() {
+	touch $DIR/$tfile
+	drop_ldlm_reply "openfile -f O_RDWR:O_CREAT -m 0755 $DIR/$tfile" ||\
+		return 2
+}
+run_test 53 "touch: drop rep"
+
+test_54() {
+	zconf_mount `hostname` $MOUNT2
+        touch $DIR/$tfile
+        touch $DIR2/$tfile.1
+        sleep 10
+        cat $DIR2/$tfile.missing # save transno = 0, rc != 0 into last_rcvd
+        fail $SINGLEMDS
+        umount $MOUNT2
+        ERROR=`dmesg | egrep "(test 54|went back in time)" | tail -n1 | grep "went back in time"`
+        [ x"$ERROR" == x ] || error "back in time occured"
+}
+run_test 54 "back in time"
+
+# bug 11330 - liblustre application death during I/O locks up OST
+test_55() {
+	remote_ost && { skip "remote OST" && return 0; }
+
+	mkdir -p $DIR/$tdir
+
+	# first dd should be finished quickly
+	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 [ $count -gt 64 ]; then
+		error "dd should be finished!"
+	    fi
+	    sleep 1
+	done	
+	echo "(dd_pid=$DDPID, time=$count)successful"
+
+        #define OBD_FAIL_OST_DROP_REQ            0x21d
+	do_facet ost sysctl -w lustre.fail_loc=0x0000021d
+	# second dd will be never finished
+	dd if=/dev/zero of=$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	
+	echo "(dd_pid=$DDPID, time=$count)successful"
+
+	#Recover fail_loc and dd will finish soon
+	do_facet ost sysctl -w lustre.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 [ $count -gt 500 ]; then
+		error "dd should be finished!"
+	    fi
+	    sleep 1
+	done	
+	echo "(dd_pid=$DDPID, time=$count)successful"
+
+        rm -rf $DIR/$tdir
+}
+run_test 55 "ost_brw_read/write drops timed-out read/write request"
+
+test_56() { # b=11277
+#define OBD_FAIL_MDS_RESEND      0x136
+        touch $DIR/$tfile
+        do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x80000136"
+        stat $DIR/$tfile
+        do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0"
+        rm -f $DIR/$tfile
+}
+run_test 56 "do not allow reconnect to busy exports"
+
+test_57_helper() {
+        # no oscs means no client or mdt 
+        while [ -e $LPROC/osc ]; do
+                for f in `find $LPROC -type f`; do 
+                        cat $f > /dev/null 2>&1
+                done
+        done
+}
+
+test_57() { # bug 10866
+        test_57_helper &
+        pid=$!
+        sleep 1
+#define OBD_FAIL_LPROC_REMOVE            0xB00
+        sysctl -w lustre.fail_loc=0x80000B00
+        zconf_umount `hostname` $DIR
+        sysctl -w lustre.fail_loc=0x80000B00
+        fail_abort $SINGLEMDS
+        kill -9 $pid
+        sysctl -w lustre.fail_loc=0
+        mount_client $DIR
+        do_facet client "df $DIR"
+}
+run_test 57 "read procfs entries causes kernel crash"
+
+test_58() { # bug 11546
+#define OBD_FAIL_MDC_ENQUEUE_PAUSE        0x801
+        touch $MOUNT/$tfile
+        ls -la $MOUNT/$tfile
+        sysctl -w lustre.fail_loc=0x80000801
+        cp $MOUNT/$tfile /dev/null &
+        pid=$!
+        sleep 1
+        sysctl -w lustre.fail_loc=0
+        drop_bl_callback rm -f $MOUNT/$tfile
+        wait $pid
+        do_facet client "df $DIR"
+}
+run_test 58 "Eviction in the middle of open RPC reply processing"
+
+test_59() { # bug 10589
+	zconf_mount `hostname` $MOUNT2 || error "Failed to mount $MOUNT2"
+#define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
+	sysctl -w lustre.fail_loc=0x311
+	writes=`dd if=/dev/zero of=$DIR2/$tfile count=1 2>&1 | awk 'BEGIN { FS="+" } /out/ {print $1}'`
+	sysctl -w lustre.fail_loc=0
+	sync
+	zconf_umount `hostname` $DIR2 -f
+	reads=`dd if=$DIR/$tfile of=/dev/null 2>&1 | awk 'BEGIN { FS="+" } /in/ {print $1}'`
+	[ $reads -eq $writes ] || error "read" $reads "blocks, must be" $writes
+}
+run_test 59 "Read cancel race on client eviction"
+
+equals_msg `basename $0`: test complete, cleaning up
+check_and_cleanup_lustre
+[ -f "$TESTSUITELOG" ] && cat $TESTSUITELOG || true