1#!/bin/ksh
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) 2017 by Lawrence Livermore National Security, LLC.
16#
17
18. $STF_SUITE/include/libtest.shlib
19
20#
21# Description:
22# zdb will not produce redundant dumps of uberblocks
23#
24# Strategy:
25# 1. Create a pool with two vdevs, A and B
26# 2. Offline vdev A
27# 3. Do some I/O
28# 4. Export the pool
29# 5. Copy label 1 from vdev A to vdev B
30# 6. Collect zdb -lu output for vdev B
31# 7. Verify labels 0 and 1 have unique Uberblocks, but 2 and 3 have none
32#
33
34log_assert "Verify zdb produces unique dumps of uberblocks"
35log_onexit cleanup
36
37function cleanup
38{
39	datasetexists $TESTPOOL && destroy_pool $TESTPOOL
40	for DISK in $DISKS; do
41		zpool labelclear -f $DEV_RDSKDIR/$DISK
42	done
43}
44
45verify_runnable "global"
46verify_disk_count "$DISKS" 2
47set -A DISK $DISKS
48
49default_mirror_setup_noexit $DISKS
50log_must zpool offline $TESTPOOL ${DISK[0]}
51log_must dd if=/dev/urandom of=$TESTDIR/testfile bs=1024 count=2
52log_must zpool export $TESTPOOL
53log_must dd if=$DEV_DSKDIR/${DISK[0]}s0 of=$DEV_DSKDIR/${DISK[1]}s0 bs=1024 count=256 conv=notrunc
54
55ubs=$(zdb -lu $DEV_RDSKDIR/${DISK[1]}s0 | grep -e LABEL -e Uberblock -e 'labels = ')
56log_note "vdev 1: ubs $ubs"
57
58ub_dump_counts=$(zdb -lu $DEV_RDSKDIR/${DISK[1]}s0 | \
59	awk '	/LABEL/	{label=$NF; blocks[label]=0};
60		/Uberblock/ {blocks[label]++};
61		END {print blocks[0],blocks[1],blocks[2],blocks[3]}')
62(( $? != 0)) && log_fail "failed to get ub_dump_counts from DISK[1]"
63log_note "vdev 1: ub_dump_counts $ub_dump_counts"
64
65set -A dump_count $ub_dump_counts
66for label in 0 1 2 3; do
67	if [[ $label -lt 2 ]]; then
68		[[ ${dump_count[$label]} -eq 0 ]] && \
69		    log_fail "zdb incorrectly dumps duplicate uberblocks"
70	else
71		[[ ${dump_count[$label]} -ne 0 ]] && \
72		    log_fail "zdb incorrectly dumps duplicate uberblocks"
73	fi
74done
75
76cleanup
77
78log_pass "zdb produces unique dumps of uberblocks"
79