usr/src/test/zfs-tests/tests/functional/cli_root/zpool_import/import_devices_missing.ksh

   1 #!/usr/bin/ksh -p
   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) 2016 by Delphix. All rights reserved.
  16 #
  17
  18 . $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
  19
  20 #
  21 # DESCRIPTION:
  22 #       A pool should be importable when up to 2 top-level devices are missing.
  23 #
  24 # STRATEGY:
  25 #       1. Create a pool.
  26 #       2. Write some data to the pool and checksum it.
  27 #       3. Add one or more devices.
  28 #       4. Write more data to the pool and checksum it.
  29 #       5. Export the pool.
  30 #       6. Move added devices out of the devices directory.
  31 #       7. Import the pool with missing devices.
  32 #       8. Verify that the first batch of data is intact.
  33 #       9. Verify that accessing the second batch of data doesn't suspend pool.
  34 #       10. Export the pool, move back missing devices, Re-import the pool.
  35 #       11. Verify that all the data is intact.
  36 #
  37
  38 verify_runnable "global"
  39
  40 function custom_cleanup
  41 {
  42         log_must set_spa_load_verify_metadata 1
  43         log_must set_spa_load_verify_data 1
  44         log_must set_zfs_max_missing_tvds 0
  45         log_must rm -rf $BACKUP_DEVICE_DIR
  46         # Highly damaged pools may fail to be destroyed, so we export them.
  47         poolexists $TESTPOOL1 && log_must zpool export $TESTPOOL1
  48         cleanup
  49 }
  50
  51 log_onexit custom_cleanup
  52
  53 function test_devices_missing
  54 {
  55         typeset poolcreate="$1"
  56         typeset addvdevs="$2"
  57         typeset missingvdevs="$3"
  58         typeset -i missingtvds="$4"
  59
  60         log_note "$0: pool '$poolcreate', adding $addvdevs, then" \
  61             "moving away $missingvdevs."
  62
  63         log_must zpool create $TESTPOOL1 $poolcreate
  64
  65         log_must generate_data $TESTPOOL1 $MD5FILE "first"
  66
  67         log_must zpool add $TESTPOOL1 $addvdevs
  68
  69         log_must generate_data $TESTPOOL1 $MD5FILE2 "second"
  70
  71         log_must zpool export $TESTPOOL1
  72
  73         log_must mv $missingvdevs $BACKUP_DEVICE_DIR
  74
  75         # Tell zfs that it is ok to import a pool with missing top-level vdevs
  76         log_must set_zfs_max_missing_tvds $missingtvds
  77         # Missing devices means that data or metadata may be corrupted.
  78         (( missingtvds > 1 )) && log_must set_spa_load_verify_metadata 0
  79         log_must set_spa_load_verify_data 0
  80         log_must zpool import -o readonly=on -d $DEVICE_DIR $TESTPOOL1
  81
  82         log_must verify_data_md5sums $MD5FILE
  83
  84         log_note "Try reading second batch of data, make sure pool doesn't" \
  85             "get suspended."
  86         verify_data_md5sums $MD5FILE >/dev/null 2>&1
  87
  88         log_must zpool export $TESTPOOL1
  89
  90         typeset newpaths=$(echo "$missingvdevs" | \
  91                 sed "s:$DEVICE_DIR:$BACKUP_DEVICE_DIR:g")
  92         log_must mv $newpaths $DEVICE_DIR
  93         log_must set_spa_load_verify_metadata 1
  94         log_must set_spa_load_verify_data 1
  95         log_must set_zfs_max_missing_tvds 0
  96         log_must zpool import -d $DEVICE_DIR $TESTPOOL1
  97
  98         log_must verify_data_md5sums $MD5FILE
  99         log_must verify_data_md5sums $MD5FILE2
 100
 101         # Cleanup
 102         log_must zpool destroy $TESTPOOL1
 103
 104         log_note ""
 105 }
 106
 107 log_must mkdir $BACKUP_DEVICE_DIR
 108
 109 test_devices_missing "$VDEV0" "$VDEV1" "$VDEV1" 1
 110 test_devices_missing "$VDEV0" "$VDEV1 $VDEV2" "$VDEV1" 1
 111 test_devices_missing "mirror $VDEV0 $VDEV1" "mirror $VDEV2 $VDEV3" \
 112     "$VDEV2 $VDEV3" 1
 113 test_devices_missing "$VDEV0 log $VDEV1" "$VDEV2" "$VDEV2" 1
 114
 115 #
 116 # Note that we are testing for 2 non-consecutive missing devices.
 117 # Missing consecutive devices results in missing metadata. Because of
 118 # Missing metadata can cause the root dataset to fail to mount.
 119 #
 120 test_devices_missing "$VDEV0" "$VDEV1 $VDEV2 $VDEV3" "$VDEV1 $VDEV3" 2
 121
 122 log_pass "zpool import succeeded with missing devices."