1#
2# CDDL HEADER START
3#
4# The contents of this file are subject to the terms of the
5# Common Development and Distribution License (the "License").
6# You may not use this file except in compliance with the License.
7#
8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9# or http://www.opensolaris.org/os/licensing.
10# See the License for the specific language governing permissions
11# and limitations under the License.
12#
13# When distributing Covered Code, include this CDDL HEADER in each
14# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15# If applicable, add the following below this CDDL HEADER, with the
16# fields enclosed by brackets "[]" replaced with your own identifying
17# information: Portions Copyright [yyyy] [name of copyright owner]
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19# CDDL HEADER END
20#
21
22#
23# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24# Use is subject to license terms.
25#
26
27#
28# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
29# Copyright (c) 2017 Datto Inc.
30# Copyright 2019 Joyent, Inc.
31#
32
33. $STF_SUITE/include/libtest.shlib
34. $STF_SUITE/tests/functional/clean_mirror/default.cfg
35
36# Most of the code related to the clearing of mirrors is duplicated in all
37# the test cases below this directory, barring a few minor changes
38# involving the device to be affected and the 'object' to use to mangle
39# the contents of the mirror.
40# This code is sourced into each of these test cases.
41
42function overwrite_verify_mirror
43{
44	typeset AFFECTED_DEVICE=$1
45	typeset OVERWRITING_DEVICE=$2
46
47	typeset atfile=0
48	set -A files
49	set -A cksums
50	set -A newcksums
51
52	scrub_pool # Make sure we have a clean pool before starting the test.
53
54	while (( atfile < FILE_COUNT )); do
55		files[$atfile]=$TESTDIR/file.$atfile
56		log_must file_write -o create -f $TESTDIR/file.$atfile \
57			-b $FILE_SIZE -c 1
58		cksums[$atfile]=$(cksum ${files[$atfile]})
59		(( atfile = atfile + 1 ))
60	done
61
62	# dd the primary side of the mirror
63	log_must dd if=$OVERWRITING_DEVICE of=/dev/dsk/$AFFECTED_DEVICE \
64		seek=8 bs=$DD_BLOCK count=$(( DD_COUNT - 8 )) conv=notrunc
65
66	atfile=0
67
68	#
69	# Flush out the cache so that we ensure we're reading from disk.
70	#
71	log_must zpool export $TESTPOOL
72	log_must zpool import $TESTPOOL
73
74	typeset -i failedcount=0
75	while (( atfile < FILE_COUNT )); do
76		files[$atfile]=$TESTDIR/file.$atfile
77		newcksum=$(cksum ${files[$atfile]})
78		if [[ $newcksum != ${cksums[$atfile]} ]]; then
79			(( failedcount = failedcount + 1 ))
80		fi
81		rm -f ${files[$atfile]}
82		(( atfile = atfile + 1 ))
83	done
84
85	if (( $failedcount > 0 )); then
86		log_fail "of the $FILE_COUNT files $failedcount did not " \
87		    "have the same checksum before and after."
88	fi
89
90	sync_pool $TESTPOOL
91}
92
93# Scrub the pool and wait for completion.
94function scrub_pool
95{
96        typeset pool=$TESTPOOL
97        log_note "Scrubbing $TESTPOOL"
98
99        # Flush all the pool data.
100        log_must zpool scrub $pool
101
102        while ! is_pool_scrubbed $pool; do
103                if is_pool_resilvered $pool ; then
104                        log_fail "$pool should not have been resilvered"
105                fi
106                log_must sleep 2
107        done
108}
109