LU-12043 llite: make sure readahead cover current read

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

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 4dcc658..37e6ab7 100644 (file)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -8617,6 +8617,26 @@ test_101g() {
 }
 run_test 101g "Big bulk(4/16 MiB) readahead"
 
 }
 run_test 101g "Big bulk(4/16 MiB) readahead"
 

+test_101h() {
+       $LFS setstripe -i 0 -c 1 $DIR/$tfile
+
+       dd if=/dev/zero of=$DIR/$tfile bs=1M count=70 ||
+               error "dd 70M file failed"
+       echo Cancel LRU locks on lustre client to flush the client cache
+       cancel_lru_locks osc
+
+       echo "Reset readahead stats"
+       $LCTL set_param -n llite.*.read_ahead_stats 0
+
+       echo "Read 10M of data but cross 64M bundary"
+       dd if=$DIR/$tfile of=/dev/null bs=10M skip=6 count=1
+       local miss=$($LCTL get_param -n llite.*.read_ahead_stats |
+                       get_named_value 'misses' | cut -d" " -f1 | calc_total)
+       [ $miss -eq 1 ] || error "expected miss 1 but got $miss"
+       rm -f $p $DIR/$tfile
+}
+run_test 101h "Readahead should cover current read window"
+

 setup_test102() {
        test_mkdir $DIR/$tdir
        chown $RUNAS_ID $DIR/$tdir
 setup_test102() {
        test_mkdir $DIR/$tdir
        chown $RUNAS_ID $DIR/$tdir