LU-16338 readahead: clip readahead with kms

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

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index ff80e57..bd32050 100755 (executable)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -11393,19 +11393,65 @@ test_101j() {
 }
 run_test 101j "A complete read block should be submitted when no RA"
 
-test_101k()
-{
+test_readahead_base() {
        local file=$DIR/$tfile
-
-       check_set_fallocate_or_skip
+       local size=$1
+       local iosz
+       local ramax
+       local ranum
 
        $LCTL set_param -n llite.*.read_ahead_stats=0
-       fallocate -l 16K $file || error "failed to fallocate $file"
+       # The first page is not accounted into readahead
+       ramax=$(((size + PAGE_SIZE - 1) / PAGE_SIZE - 1))
+       iosz=$(((size + 1048575) / 1048576 * 1048576))
+       echo "Test readahead: size=$size ramax=$ramx iosz=$iosz"
+
+       $LCTL mark  "Test readahead: size=$size ramax=$ramx iosz=$iosz"
+       fallocate -l $size $file || error "failed to fallocate $file"
        cancel_lru_locks osc
-       $MULTIOP $file or1048576c
-       $LCTL get_param llite.*.read_ahead_stats
+       $MULTIOP $file or${iosz}c || error "failed to read $file"
+       $LCTL get_param -n llite.*.read_ahead_stats
+       ranum=$($LCTL get_param -n llite.*.read_ahead_stats |
+               awk '/readahead.pages/ { print $7 }' | calc_total)
+       (( $ranum <= $ramax )) ||
+               error "read-ahead pages is $ranum more than $ramax"
+       rm -rf $file || error "failed to remove $file"
 }
-run_test 101k "read ahead for small file"
+
+test_101m()
+{
+       local file=$DIR/$tfile
+       local ramax
+       local ranum
+       local size
+       local iosz
+
+       check_set_fallocate_or_skip
+       stack_trap "rm -f $file" EXIT
+
+       test_readahead_base 4096
+
+       # file size: 16K = 16384
+       test_readahead_base 16384
+       test_readahead_base 16385
+       test_readahead_base 16383
+
+       # file size: 1M + 1 = 1048576 + 1
+       test_readahead_base 1048577
+       # file size: 1M + 16K
+       test_readahead_base $((1048576 + 16384))
+
+       # file size: stripe_size * (stripe_count - 1) + 16K
+       $LFS setstripe -c -1 $file || error "failed to setstripe $file"
+       test_readahead_base $((1048576 * (OSTCOUNT - 1) + 16384))
+       # file size: stripe_size * stripe_count + 16K
+       $LFS setstripe -c -1 $file || error "failed to setstripe $file"
+       test_readahead_base $((1048576 * OSTCOUNT + 16384))
+       # file size: 2 * stripe_size * stripe_count + 16K
+       $LFS setstripe -c -1 $file || error "failed to setstripe $file"
+       test_readahead_base $((2 * 1048576 * OSTCOUNT + 16384))
+}
+run_test 101m "read ahead for small file and last stripe of the file"
 
 setup_test102() {
        test_mkdir $DIR/$tdir