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