1#!/bin/ksh -p
2# SPDX-License-Identifier: CDDL-1.0
3
4#
5# This file and its contents are supplied under the terms of the
6# Common Development and Distribution License ("CDDL"), version 1.0.
7# You may only use this file in accordance with the terms of version
8# 1.0 of the CDDL.
9#
10# A full copy of the text of the CDDL should have accompanied this
11# source.  A copy of the CDDL is also available via the Internet at
12# http://www.illumos.org/license/CDDL.
13#
14
15#
16# Copyright (c) 2016 by Delphix. All rights reserved.
17#
18
19. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
20
21#
22# DESCRIPTION:
23#	A pool should not try to write to a device that doesn't belong to it
24#	anymore, even if the device is in its cachefile.
25#
26# STRATEGY:
27#	1. Create pool1 with some devices and an alternate cachefile.
28#	2. Backup the cachefile.
29#	3. Export pool1.
30#	4. Create pool2 using a device that belongs to pool1.
31#	5. Export pool2.
32#	6. Compute checksum of the shared device.
33#	7. Import pool1 and write some data to it.
34#	8. Verify that the checksum of the shared device hasn't changed.
35#
36
37verify_runnable "global"
38
39function custom_cleanup
40{
41	destroy_pool $TESTPOOL2
42	cleanup
43}
44
45log_onexit custom_cleanup
46
47function dev_checksum
48{
49	typeset dev="$1"
50	typeset checksum
51
52	log_note "Compute checksum of '$dev'"
53
54	xxh128digest $dev ||
55		log_fail "Failed to compute checksum of '$dev'"
56}
57
58function test_shared_device
59{
60	typeset pool1="$1"
61	typeset pool2="$2"
62	typeset sharedvdev="$3"
63	typeset importflags="${4:-}"
64
65	log_note "$0: pool1 '$pool1', pool2 '$pool2' takes $sharedvdev."
66
67	log_must zpool create -o cachefile=$CPATH $TESTPOOL1 $pool1
68
69	log_must cp $CPATH $CPATHBKP
70
71	log_must zpool export $TESTPOOL1
72
73	log_must zpool create -f $TESTPOOL2 $pool2
74
75	log_must zpool export $TESTPOOL2
76
77	typeset checksum1=$(dev_checksum $sharedvdev)
78
79	log_must zpool import -c $CPATHBKP $importflags $TESTPOOL1
80
81	log_must write_some_data $TESTPOOL1 2
82
83	log_must zpool destroy $TESTPOOL1
84
85	typeset checksum2=$(dev_checksum $sharedvdev)
86
87	if [[ $checksum1 == $checksum2 ]]; then
88		log_pass "Device hasn't been modified by original pool"
89	else
90		log_fail "Device has been modified by original pool." \
91		    "Checksum mismatch: $checksum1 != $checksum2."
92	fi
93
94	# Cleanup
95	log_must zpool import -d $DEVICE_DIR $TESTPOOL2
96	log_must zpool destroy $TESTPOOL2
97	log_must rm -f $CPATH $CPATHBKP
98
99	log_note ""
100}
101
102test_shared_device "mirror $VDEV0 $VDEV1" "mirror $VDEV1 $VDEV2" "$VDEV1"
103test_shared_device "mirror $VDEV0 $VDEV1 $VDEV2" "mirror $VDEV2 $VDEV3" \
104    "$VDEV2"
105test_shared_device "raidz $VDEV0 $VDEV1 $VDEV2" "$VDEV2" "$VDEV2"
106test_shared_device "draid $VDEV0 $VDEV1 $VDEV2" "$VDEV2" "$VDEV2"
107test_shared_device "$VDEV0 log $VDEV1" "$VDEV2 log $VDEV1" "$VDEV1" "-m"
108
109log_pass "Pool doesn't write to a device it doesn't own anymore."
110