LU-11964 mdc: prevent glimpse lock count grow

[fs/lustre-release.git] / lustre / tests / sanity-dom.sh

diff --git a/lustre/tests/sanity-dom.sh b/lustre/tests/sanity-dom.sh
index f87be08..01bedae 100644 (file)
--- a/lustre/tests/sanity-dom.sh
+++ b/lustre/tests/sanity-dom.sh
@@ -12,15 +12,6 @@ ALWAYS_EXCEPT="$SANITY_DOM_EXCEPT"
 [ "$SLOW" = "no" ] && EXCEPT_SLOW=""
 # UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
 
-if [ $(facet_fstype $SINGLEMDS) = "zfs" ]; then
-# bug number for skipped test:
-       ALWAYS_EXCEPT+=""
-       if [ $MDSCOUNT -gt 1 ]; then
-# bug number for skipped test:
-               ALWAYS_EXCEPT+=""
-       fi
-fi
-
 LUSTRE=${LUSTRE:-$(cd $(dirname $0)/..; echo $PWD)}
 
 . $LUSTRE/tests/test-framework.sh
@@ -30,6 +21,15 @@ init_test_env $@
 . ${CONFIG:=$LUSTRE/tests/cfg/$NAME.sh}
 init_logging
 
+if [ $(facet_fstype $SINGLEMDS) = "zfs" ]; then
+# bug number for skipped test:
+       ALWAYS_EXCEPT+=""
+       if [ $MDSCOUNT -gt 1 ]; then
+# bug number for skipped test:
+               ALWAYS_EXCEPT+=""
+       fi
+fi
+
 [[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.10.56) ]] ||
        { skip "Need MDS version at least 2.10.56"; exit 0; }
 
@@ -96,6 +96,30 @@ test_3() {
 }
 run_test 3 "Truncate over DoM size on different nodes"
 
+test_4() {
+       local before=0
+       local after=0
+
+       dd if=/dev/zero of=$DIR1/$tfile bs=2M count=1
+       cancel_lru_locks mdc
+
+       #define OBD_FAIL_MDC_GLIMPSE_DDOS 0x808
+       $LCTL set_param fail_loc=0x80000808
+       before=$(lctl get_param -n ldlm.namespaces.*mdc*.lock_count |
+               gawk '{cnt=cnt+$1}  END{print cnt}')
+       for ((i=1; i < 100; i++))
+       do
+               tail -n100 $DIR1/$tfile > /dev/null
+               stat -f $DIR2/$tfile > /dev/null
+       done
+       after=$(lctl get_param -n ldlm.namespaces.*mdc*.lock_count |
+               gawk '{cnt=cnt+$1}  END{print cnt}')
+       [[ $((after - before)) -ge 20 ]] &&
+               error "Too many locks found $((after - before))"
+       return 0
+}
+run_test 4 "DoM: glimpse doesn't produce duplicated locks"
+
 test_fsx() {
        local file1=$DIR1/$tfile
        local file2=$DIR2/$tfile