1#!/bin/ksh -p
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 https://opensource.org/licenses/CDDL-1.0.
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
28#
29# Copyright (c) 2013 by Delphix. All rights reserved.
30#
31
32. $STF_SUITE/include/libtest.shlib
33. $STF_SUITE/tests/functional/redundancy/redundancy.kshlib
34
35#
36# DESCRIPTION:
37#	A mirrored pool can withstand N-1 device are failing or missing.
38#
39# STRATEGY:
40#	1. Create N(>2,<5) virtual disk files.
41#	2. Create mirror pool based on the virtual disk files.
42#	3. Fill the filesystem with directories and files.
43#	4. Record all the files and directories checksum information.
44#	5. Damaged at most N-1 of the virtual disk files.
45#	6. Verify the data are correct to prove mirror can withstand N-1 devices
46#	   are failing.
47#
48
49verify_runnable "global"
50
51log_assert "Verify mirrored pool can withstand N-1 devices are failing or missing."
52log_onexit cleanup
53
54typeset -i cnt=$(random_int_between 2 5)
55setup_test_env $TESTPOOL mirror $cnt
56
57typeset -i i=1
58
59#
60# Inject data corruption errors for mirrored pool
61#
62while (( i < cnt )); do
63	damage_devs $TESTPOOL $i "label"
64	log_must is_data_valid $TESTPOOL
65	log_must clear_errors $TESTPOOL
66
67	(( i +=1 ))
68done
69
70#
71# Inject  bad devices errors for mirrored pool
72#
73i=1
74while (( i < cnt )); do
75        damage_devs $TESTPOOL $i
76        log_must is_data_valid $TESTPOOL
77	log_must recover_bad_missing_devs $TESTPOOL $i
78
79	(( i +=1 ))
80done
81
82#
83# Inject missing device errors for mirrored pool
84#
85i=1
86while (( i < cnt )); do
87        remove_devs $TESTPOOL $i
88        log_must is_data_valid $TESTPOOL
89	log_must recover_bad_missing_devs $TESTPOOL $i
90
91	(( i +=1 ))
92done
93
94log_pass "Mirrored pool can withstand N-1 devices failing as expected."
95