1# vim: filetype=sh
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 http://www.opensolaris.org/os/licensing.
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#
24# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26
27# Most of the code related to the clearing of mirrors is duplicated in all
28# the test cases below this directory, barring a few minor changes
29# involving the device to be affected and the 'object' to use to mangle
30# the contents of the mirror.
31# This code is sourced into each of these test cases.
32
33function overwrite_verify_mirror
34{
35	typeset AFFECTED_DEVICE=$1
36	typeset OVERWRITING_DEVICE=$2
37
38	typeset atfile=0
39	set -A cksums
40	set -A newcksums
41
42	populate_dir $TESTDIR/file $FILE_COUNT $WRITE_COUNT $BLOCKSZ 0
43	while (( atfile < FILE_COUNT )); do
44		cksums[$atfile]=$($CKSUM ${TESTDIR}/file.${atfile})
45		(( atfile = atfile + 1 ))
46	done
47
48	# unmount and export before dd
49	log_must $UMOUNT $TESTDIR
50	log_must $ZPOOL export $TESTPOOL
51
52	# dd the primary side of the mirror
53	log_must $DD if=$OVERWRITING_DEVICE of=$(bsddevmap $AFFECTED_DEVICE) \
54		seek=8 bs=$DD_BLOCK count=$(( DD_COUNT - 8 )) conv=notrunc
55
56	# now remount
57	log_must $ZPOOL import $TESTPOOL
58
59	atfile=0
60	typeset -i failedcount=0
61	while (( atfile < FILE_COUNT )); do
62		newcksum=$($CKSUM $TESTDIR/file.${atfile})
63		if [[ $newcksum != ${cksums[$atfile]} ]]; then
64			(( failedcount = failedcount + 1 ))
65		fi
66		$RM -f ${files[$atfile]}
67		(( atfile = atfile + 1 ))
68	done
69
70	if (( $failedcount > 0 )); then
71		log_fail "of the $FILE_COUNT files $failedcount did not " \
72		    "have the same checksum before and after."
73	fi
74}
75