1#!/bin/ksh -p
2#
3# This file and its contents are supplied under the terms of the
4# Common Development and Distribution License ("CDDL"), version 1.0.
5# You may only use this file in accordance with the terms of version
6# 1.0 of the CDDL.
7#
8# A full copy of the text of the CDDL should have accompanied this
9# source.  A copy of the CDDL is also available via the Internet at
10# http://www.illumos.org/license/CDDL.
11#
12
13#
14# Copyright 2019, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
15#
16
17. $STF_SUITE/include/libtest.shlib
18. $STF_SUITE/tests/perf/perf.shlib
19
20function cleanup
21{
22	# Set tunables to their recorded actual size and then to their original
23	# value: this works for previously unconfigured tunables.
24	log_must set_tunable64 ARC_MIN "$MINSIZE"
25	log_must set_tunable64 ARC_MIN "$ZFS_ARC_MIN"
26	log_must set_tunable64 ARC_MAX "$MAXSIZE"
27	log_must set_tunable64 ARC_MAX "$ZFS_ARC_MAX"
28}
29
30log_onexit cleanup
31
32ZFS_ARC_MAX="$(get_tunable ARC_MAX)"
33ZFS_ARC_MIN="$(get_tunable ARC_MIN)"
34MINSIZE="$(get_min_arc_size)"
35MAXSIZE="$(get_max_arc_size)"
36
37log_assert "ARC tunables should be updated dynamically"
38
39for size in $((MAXSIZE/4)) $((MAXSIZE/3)) $((MAXSIZE/2)) $MAXSIZE; do
40	log_must set_tunable64 ARC_MAX "$size"
41	log_must test "$(get_max_arc_size)" == "$size"
42	log_must set_tunable64 ARC_MIN "$size"
43	log_must test "$(get_min_arc_size)" == "$size"
44done
45
46log_pass "ARC tunables can be updated dynamically"
47