1#!/bin/ksh -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
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7# You may not use this file except in compliance with the License.
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9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or https://opensource.org/licenses/CDDL-1.0.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
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20# CDDL HEADER END
21#
22
23#
24# Portions Copyright (c) 2022 Information2 Software, Inc.
25#
26
27. $STF_SUITE/include/libtest.shlib
28. $STF_SUITE/include/math.shlib
29
30#
31# DESCRIPTION:
32# Test posix_fadvise.
33#
34# STRATEGY:
35# 1. Set primarycache to metadata in order to disable prefetch
36# 2. Write some data to file
37# 3. get data_size field from arcstat
38# 4. call file_fadvise with POSIX_FADV_SEQUENTIAL
39# 5. get data_size field from arcstat again
40# 6. latter data_size should be bigger than former one
41#
42
43# NOTE: if HAVE_FILE_FADVISE is not defined former data_size
44# should less or eaqul to latter one
45
46verify_runnable "global"
47
48FILE=$TESTDIR/$TESTFILE0
49BLKSZ=$(get_prop recordsize $TESTPOOL)
50
51function cleanup
52{
53	log_must zfs set primarycache=all $TESTPOOL
54	[[ -e $TESTDIR ]] && log_must rm -Rf $TESTDIR/*
55}
56
57getstat() {
58	awk -v c="$1" '$1 == c {print $3; exit}' /proc/spl/kstat/zfs/arcstats
59}
60
61log_assert "Ensure fadvise prefetch data"
62
63log_onexit cleanup
64
65log_must zfs set primarycache=metadata $TESTPOOL
66
67log_must file_write -o create -f $FILE -b $BLKSZ -c 1000
68sync_pool $TESTPOOL
69
70data_size1=$(getstat data_size)
71
72log_must file_fadvise -f $FILE -a 2
73sleep 10
74
75data_size2=$(getstat data_size)
76log_note "original data_size is $data_size1, final data_size is $data_size2"
77
78log_must [ $data_size1 -le $data_size2 ]
79
80log_pass "Ensure data could be prefetched"
81