tests/zfs-tests/tests/functional/cli_root/zdb/zdb_004_pos.ksh

   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
  34 log_assert "Verify zdb produces unique dumps of uberblocks"
  35 log_onexit cleanup
  36
  37 function 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
  45 verify_runnable "global"
  46 verify_disk_count "$DISKS" 2
  47 set -A DISK $DISKS
  48 WHOLE_DISK=${DISK[0]}
  49
  50 default_mirror_setup_noexit $DISKS
  51 DEVS=$(get_pool_devices ${TESTPOOL} ${DEV_RDSKDIR})
  52 [[ -n $DEVS ]] && set -A DISK $DEVS
  53
  54 log_must zpool offline $TESTPOOL ${WHOLE_DISK}
  55 log_must dd if=/dev/urandom of=$TESTDIR/testfile bs=1K count=2
  56 log_must zpool export $TESTPOOL
  57
  58 log_must dd if=$DEV_RDSKDIR/${DISK[0]} of=$DEV_RDSKDIR/${DISK[1]} bs=1K count=256 conv=notrunc
  59
  60 ubs=$(zdb -lu ${DISK[1]} | grep -e LABEL -e Uberblock -e 'labels = ')
  61 log_note "vdev 1: ubs $ubs"
  62
  63 ub_dump_counts=$(zdb -lu ${DISK[1]} | \
  64         awk '   /LABEL/ {label=$NF; blocks[label]=0};
  65                 /Uberblock/ {blocks[label]++};
  66                 END {print blocks[0],blocks[1],blocks[2],blocks[3]}')
  67 (( $? != 0)) && log_fail "failed to get ub_dump_counts from DISK[1]"
  68 log_note "vdev 1: ub_dump_counts $ub_dump_counts"
  69
  70 set -A dump_count $ub_dump_counts
  71 for label in 0 1 2 3; do
  72         if [[ $label -lt 2 ]]; then
  73                 [[ ${dump_count[$label]} -eq 0 ]] && \
  74                     log_fail "zdb incorrectly dumps duplicate uberblocks"
  75         else
  76                 [[ ${dump_count[$label]} -ne 0 ]] && \
  77                     log_fail "zdb incorrectly dumps duplicate uberblocks"
  78         fi
  79 done
  80
  81 cleanup
  82
  83 log_pass "zdb produces unique dumps of uberblocks"