+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_6() {
+ $MULTIOP $DIR1/$tfile Oz40960w100_z200w100c &
+ MULTIPID=$!
+
+ # let MULTIPID to create the file
+ sleep 1
+ $MULTIOP $DIR2/$tfile oO_RDWR:Tw100c
+ kill -USR1 $MULTIPID
+ wait
+ $MULTIOP $DIR2/$tfile oO_RDWR:z400w100c
+ $CHECKSTAT -s 500 $DIR2/$tfile || error "wrong size"
+}
+run_test 6 "Race two writes, check file size"
+