1#!/bin/ksh -p
2# SPDX-License-Identifier: CDDL-1.0
3#
4# CDDL HEADER START
5#
6# The contents of this file are subject to the terms of the
7# Common Development and Distribution License (the "License").
8# You may not use this file except in compliance with the License.
9#
10# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11# or https://opensource.org/licenses/CDDL-1.0.
12# See the License for the specific language governing permissions
13# and limitations under the License.
14#
15# When distributing Covered Code, include this CDDL HEADER in each
16# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17# If applicable, add the following below this CDDL HEADER, with the
18# fields enclosed by brackets "[]" replaced with your own identifying
19# information: Portions Copyright [yyyy] [name of copyright owner]
20#
21# CDDL HEADER END
22#
23
24. $STF_SUITE/include/libtest.shlib
25. $STF_SUITE/tests/functional/block_cloning/block_cloning.kshlib
26
27#
28# DESCRIPTION:
29#	When the destination file is mmaped and is already cached we need to
30#	update mmaped pages after successful clone.
31#
32# STRATEGY:
33#	1. Create a pool.
34#	2. Create a two test files with random content.
35#	3. mmap the files, read them and clone from one to the other using
36#	   clone_mmap_cached.
37#	4. clone_mmap_cached also verifies if the content of the destination
38#	   file was updated while reading it from mmaped memory.
39#
40
41verify_runnable "global"
42
43VDIR=$TEST_BASE_DIR/disk-bclone
44VDEV="$VDIR/a"
45
46function cleanup
47{
48	datasetexists $TESTPOOL && destroy_pool $TESTPOOL
49	rm -rf $VDIR
50}
51
52log_onexit cleanup
53
54log_assert "Test for clone into mmaped and cached file"
55
56log_must rm -rf $VDIR
57log_must mkdir -p $VDIR
58log_must truncate -s 1G $VDEV
59
60log_must zpool create -o feature@block_cloning=enabled $TESTPOOL $VDEV
61log_must zfs create $TESTPOOL/$TESTFS
62
63for opts in "--" "-i" "-o" "-io"
64do
65	log_must dd if=/dev/urandom of=/$TESTPOOL/$TESTFS/src bs=1M count=1
66	log_must dd if=/dev/urandom of=/$TESTPOOL/$TESTFS/dst bs=1M count=1
67
68	# Clear cache.
69	log_must zpool export $TESTPOOL
70	log_must zpool import -d $VDIR $TESTPOOL
71
72	log_must clone_mmap_cached $opts /$TESTPOOL/$TESTFS/src /$TESTPOOL/$TESTFS/dst
73
74	sync_pool $TESTPOOL
75	log_must sync
76
77	log_must have_same_content /$TESTPOOL/$TESTFS/src /$TESTPOOL/$TESTFS/dst
78	blocks=$(get_same_blocks $TESTPOOL/$TESTFS src $TESTPOOL/$TESTFS dst)
79	# FreeBSD's seq(1) leaves a trailing space, remove it with sed(1).
80	log_must [ "$blocks" = "$(seq -s " " 0 7 | sed 's/ $//')" ]
81done
82
83log_pass "Clone properly updates mmapped and cached pages"
84