1#!/usr/bin/ksh -p
2
3#
4# This file and its contents are supplied under the terms of the
5# Common Development and Distribution License ("CDDL"), version 1.0.
6# You may only use this file in accordance with the terms of version
7# 1.0 of the CDDL.
8#
9# A full copy of the text of the CDDL should have accompanied this
10# source.  A copy of the CDDL is also available via the Internet at
11# http://www.illumos.org/license/CDDL.
12#
13
14#
15# Copyright (c) 2016 by Delphix. All rights reserved.
16#
17
18. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
19
20#
21# DESCRIPTION:
22#	A pool should not try to write to a device that doesn't belong to it
23#	anymore, even if the device is in its cachefile.
24#
25# STRATEGY:
26#	1. Create pool1 with some devices and an alternate cachefile.
27#	2. Backup the cachefile.
28#	3. Export pool1.
29#	4. Create pool2 using a device that belongs to pool1.
30#	5. Export pool2.
31#	6. Compute checksum of the shared device.
32#	7. Import pool1 and write some data to it.
33#	8. Verify that the checksum of the shared device hasn't changed.
34#
35
36verify_runnable "global"
37
38function custom_cleanup
39{
40	destroy_pool $TESTPOOL2
41	cleanup
42}
43
44log_onexit custom_cleanup
45
46function dev_checksum
47{
48	typeset dev="$1"
49	typeset checksum
50
51	log_note "Compute checksum of '$dev'"
52
53	checksum=$(md5sum $dev)
54	if [[ $? -ne 0 ]]; then
55		log_fail "Failed to compute checksum of '$dev'"
56		return 1
57	fi
58
59	echo "$checksum"
60	return 0
61}
62
63function test_shared_device
64{
65	typeset pool1="$1"
66	typeset pool2="$2"
67	typeset sharedvdev="$3"
68	typeset importflags="${4:-}"
69
70	log_note "$0: pool1 '$pool1', pool2 '$pool2' takes $sharedvdev."
71
72	log_must zpool create -o cachefile=$CPATH $TESTPOOL1 $pool1
73
74	log_must cp $CPATH $CPATHBKP
75
76	log_must zpool export $TESTPOOL1
77
78	log_must zpool create -f $TESTPOOL2 $pool2
79
80	log_must zpool export $TESTPOOL2
81
82	typeset checksum1=$(dev_checksum $sharedvdev)
83
84	log_must zpool import -c $CPATHBKP $importflags $TESTPOOL1
85
86	log_must write_some_data $TESTPOOL1 2
87
88	log_must zpool destroy $TESTPOOL1
89
90	typeset checksum2=$(dev_checksum $sharedvdev)
91
92	if [[ $checksum1 == $checksum2 ]]; then
93		log_pos "Device hasn't been modified by original pool"
94	else
95		log_fail "Device has been modified by original pool." \
96		    "Checksum mismatch: $checksum1 != $checksum2."
97	fi
98
99	# Cleanup
100	log_must zpool import -d $DEVICE_DIR $TESTPOOL2
101	log_must zpool destroy $TESTPOOL2
102	log_must rm -f $CPATH $CPATHBKP
103
104	log_note ""
105}
106
107test_shared_device "mirror $VDEV0 $VDEV1" "mirror $VDEV1 $VDEV2" "$VDEV1"
108test_shared_device "mirror $VDEV0 $VDEV1 $VDEV2" "mirror $VDEV2 $VDEV3" \
109    "$VDEV2"
110test_shared_device "raidz $VDEV0 $VDEV1 $VDEV2" "$VDEV2" "$VDEV2"
111test_shared_device "$VDEV0 log $VDEV1" "$VDEV2 log $VDEV1" "$VDEV1" "-m"
112
113log_pass "Pool doesn't write to a device it doesn't own anymore."
114