1#! /bin/ksh -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
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]
19#
20# CDDL HEADER END
21
22#
23# Copyright (c) 2023 by Lawrence Livermore National Security, LLC.
24#
25
26. $STF_SUITE/include/libtest.shlib
27
28#
29# DESCRIPTION:
30#
31# https://github.com/openzfs/zfs/issues/15526 identified a dirty dnode
32# SEEK_HOLE/SEEK_DATA bug.  https://github.com/openzfs/zfs/pull/15571
33# fixed the bug, and was backported to 2.1.14 and 2.2.2.
34#
35# This test is to ensure that the bug, as understood, will not recur.
36#
37# STRATEGY:
38#
39# 1. Run the 'seekflood' binary, for creation of files with timing
40#    characteristics that can trigger #15526.
41# 2. A single run is not always a trigger, so run repeatedly.
42
43verify_runnable "global"
44
45function cleanup
46{
47	rm -rf /$TESTDIR/cp_stress
48}
49
50log_assert "Run the 'seekflood' binary repeatedly to try to trigger #15526"
51
52log_onexit cleanup
53
54log_must mkdir /$TESTPOOL/cp_stress
55
56MYPWD="$PWD"
57cd /$TESTPOOL/cp_stress
58CPUS=$(get_num_cpus)
59
60if is_freebsd ; then
61	# 'seekflood' takes longer on FreeBSD and can timeout the test
62	RUNS=3
63else
64	RUNS=10
65fi
66
67for i in $(seq 1 $RUNS) ; do
68	# Each run takes around 12 seconds.
69	log_must $STF_SUITE/tests/functional/cp_files/seekflood 2000 $CPUS
70done
71cd "$MYPWD"
72
73log_pass "No corruption detected"
74