usr/src/test/zfs-tests/tests/functional/cli_root/zpool_import/import_cachefile_shared_device.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 not try to write to a device that doesn't belong to it
  23 #       anymore, even if the device is in its cachefile.
  24 #
  25 # STRATEGY:
  26 #       1. Create pool1 with some devices and an alternate cachefile.
  27 #       2. Backup the cachefile.
  28 #       3. Export pool1.
  29 #       4. Create pool2 using a device that belongs to pool1.
  30 #       5. Export pool2.
  31 #       6. Compute checksum of the shared device.
  32 #       7. Import pool1 and write some data to it.
  33 #       8. Verify that the checksum of the shared device hasn't changed.
  34 #
  35
  36 verify_runnable "global"
  37
  38 function custom_cleanup
  39 {
  40         destroy_pool $TESTPOOL2
  41         cleanup
  42 }
  43
  44 log_onexit custom_cleanup
  45
  46 function dev_checksum
  47 {
  48         typeset dev="$1"
  49         typeset checksum
  50
  51         log_note "Compute checksum of '$dev'"
  52
  53         checksum=$(md5sum $dev)
  54         if [[ $? -ne 0 ]]; then
  55                 log_fail "Failed to compute checksum of '$dev'"
  56                 return 1
  57         fi
  58
  59         echo "$checksum"
  60         return 0
  61 }
  62
  63 function test_shared_device
  64 {
  65         typeset pool1="$1"
  66         typeset pool2="$2"
  67         typeset sharedvdev="$3"
  68         typeset importflags="${4:-}"
  69
  70         log_note "$0: pool1 '$pool1', pool2 '$pool2' takes $sharedvdev."
  71
  72         log_must zpool create -o cachefile=$CPATH $TESTPOOL1 $pool1
  73
  74         log_must cp $CPATH $CPATHBKP
  75
  76         log_must zpool export $TESTPOOL1
  77
  78         log_must zpool create -f $TESTPOOL2 $pool2
  79
  80         log_must zpool export $TESTPOOL2
  81
  82         typeset checksum1=$(dev_checksum $sharedvdev)
  83
  84         log_must zpool import -c $CPATHBKP $importflags $TESTPOOL1
  85
  86         log_must write_some_data $TESTPOOL1 2
  87
  88         log_must zpool destroy $TESTPOOL1
  89
  90         typeset checksum2=$(dev_checksum $sharedvdev)
  91
  92         if [[ $checksum1 == $checksum2 ]]; then
  93                 log_pos "Device hasn't been modified by original pool"
  94         else
  95                 log_fail "Device has been modified by original pool." \
  96                     "Checksum mismatch: $checksum1 != $checksum2."
  97         fi
  98
  99         # Cleanup
 100         log_must zpool import -d $DEVICE_DIR $TESTPOOL2
 101         log_must zpool destroy $TESTPOOL2
 102         log_must rm -f $CPATH $CPATHBKP
 103
 104         log_note ""
 105 }
 106
 107 test_shared_device "mirror $VDEV0 $VDEV1" "mirror $VDEV1 $VDEV2" "$VDEV1"
 108 test_shared_device "mirror $VDEV0 $VDEV1 $VDEV2" "mirror $VDEV2 $VDEV3" \
 109     "$VDEV2"
 110 test_shared_device "raidz $VDEV0 $VDEV1 $VDEV2" "$VDEV2" "$VDEV2"
 111 test_shared_device "$VDEV0 log $VDEV1" "$VDEV2 log $VDEV1" "$VDEV1" "-m"
 112
 113 log_pass "Pool doesn't write to a device it doesn't own anymore."