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