}
run_test 39m "test atime and mtime before 1970"
+test_39n() { # LU-3832
+ local atime_diff=$(do_facet $SINGLEMDS \
+ lctl get_param -n mdd.*MDT0000*.atime_diff)
+ local atime0
+ local atime1
+ local atime2
+
+ do_facet $SINGLEMDS lctl set_param -n mdd.*MDT0000*.atime_diff=1
+
+ rm -rf $DIR/$tfile
+ dd if=/dev/zero of=$DIR/$tfile bs=4096 count=1 status=noxfer
+ atime0=$(stat -c %X $DIR/$tfile)
+
+ sleep 5
+ $MULTIOP $DIR/$tfile oO_RDONLY:O_NOATIME:r4096c
+ atime1=$(stat -c %X $DIR/$tfile)
+
+ sleep 5
+ cancel_lru_locks mdc
+ cancel_lru_locks osc
+ $MULTIOP $DIR/$tfile oO_RDONLY:O_NOATIME:r4096c
+ atime2=$(stat -c %X $DIR/$tfile)
+
+ do_facet $SINGLEMDS \
+ lctl set_param -n mdd.*MDT0000*.atime_diff=$atime_diff
+
+ [ "$atime0" -eq "$atime1" ] || error "atime0 $atime0 != atime1 $atime1"
+ [ "$atime1" -eq "$atime2" ] || error "atime0 $atime0 != atime1 $atime1"
+}
+run_test 39n "check that O_NOATIME is honored"
+
test_40() {
dd if=/dev/zero of=$DIR/$tfile bs=4096 count=1
$RUNAS $OPENFILE -f O_WRONLY:O_TRUNC $DIR/$tfile &&