}
run_test 77o "Changing rank should not panic"
+test_77q() {
+ local i
+
+ (( $MDS1_VERSION > $(version_code 2.14.54) )) ||
+ skip "need MDS >= 2.14.54"
+
+ do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_policies="tbf"
+ stack_trap "do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_policies=fifo"
+
+ for i in {1..50}; do
+ local pid1 pid2
+
+ do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_tbf_rule="'start rule77q_1 uid={500}&gid={500} rate=100'" &
+ pid1=$!
+ do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_tbf_rule="'start rule77q_2 uid={1000}&gid={1000} rate=100'" &
+ pid2=$!
+ wait $pid1 || error "$i: Fail to start TBF rule 'rule77q_1'"
+ wait $pid2 || error "$i: Fail to start TBF rule 'rule77q_2'"
+
+ do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_tbf_rule="'stop rule77q_1'" &
+ pid1=$!
+ do_facet mds1 $LCTL set_param mds.MDS.mdt.nrs_tbf_rule="'stop rule77q_2'" &
+ pid2=$!
+ wait $pid1 || error "$i: Fail to stop TBF rule 'rule77q_1'"
+ wait $pid2 || error "$i: Fail to stop TBF rule 'rule77q_2'"
+ done
+}
+run_test 77q "Parallel TBF rule definitions should not panic"
+
test_78() { #LU-6673
local rc