tests/zfs-tests/tests/functional/cli_root/zpool_split/zpool_split_vdevs.ksh

   1 #!/bin/ksh -p
   2 #
   3 # This file and its contents are supplied under the terms of the
   4 # Common Development and Distribution License ("CDDL"), version 1.0.
   5 # You may only use this file in accordance with the terms of version
   6 # 1.0 of the CDDL.
   7 #
   8 # A full copy of the text of the CDDL should have accompanied this
   9 # source.  A copy of the CDDL is also available via the Internet at
  10 # http://www.illumos.org/license/CDDL.
  11 #
  12
  13 #
  14 # Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
  15 #
  16
  17 . $STF_SUITE/include/libtest.shlib
  18 . $STF_SUITE/include/math.shlib
  19
  20 #
  21 # DESCRIPTION:
  22 # 'zpool split' should only work on mirrors. Every other VDEV layout is not
  23 # supported.
  24 #
  25 # STRATEGY:
  26 # Create pools with various VDEV layouts and verify only mirrors can be split
  27 #
  28
  29 verify_runnable "both"
  30
  31 function cleanup
  32 {
  33         destroy_pool $TESTPOOL
  34         destroy_pool $TESTPOOL2
  35         rm -f $FILEDEV_PREFIX*
  36 }
  37
  38 #
  39 # Given a vdev type generate a pool configuration which can be immediately
  40 # used as "zpool create $poolname $config" or "zpool add $poolname $config".
  41 # Supported vdev types are:
  42 #  "d" - single disk
  43 #  "t" - stripe
  44 #  "m" - mirror
  45 # "m3" - 3-way mirror
  46 # "z1" - raidz1
  47 # "z2" - raidz2
  48 # "z3" - raidz3
  49 #  "s" - spare
  50 #  "l" - log
  51 # "ll" - mirrored log
  52 #  "c" - cache
  53 #  "sc" - special class
  54 #
  55 function pool_config # <vdev-type>
  56 {
  57         typeset config=""
  58         typeset -A disks
  59         disks[d]="d1"
  60         disks[t]="t1 t2"
  61         disks[m]="m1 m2"
  62         disks[m3]="m1 m2 m3"
  63         disks[z1]="z1 z2"
  64         disks[z2]="z1 z2 z3"
  65         disks[z3]="z1 z2 z3 z4"
  66         disks[s]="s1"
  67         disks[l]="l1"
  68         disks[ll]="l1 l2"
  69         disks[c]="c1"
  70         disks[sc]="sc1 sc2"
  71         case $1 in
  72         d|t) # single disk or stripe
  73                 vdev='' ;;
  74         m|m3) # 2-way or 3-way mirror
  75                 vdev='mirror';;
  76         z1) # raidz1
  77                 vdev='raidz1';;
  78         z2) # raidz2
  79                 vdev='raidz2';;
  80         z3) # raidz3
  81                 vdev='raidz3';;
  82         s) # spare
  83                 vdev='spare';;
  84         l) # log
  85                 vdev='log';;
  86         ll) # mirrored log
  87                 vdev='log mirror';;
  88         c) # cache
  89                 vdev='cache';;
  90         sc) # mirrored special class
  91                 vdev='special mirror';;
  92         *)
  93                 log_fail "setup_pool: unsupported vdev type '$1'"
  94         esac
  95         config="$vdev"
  96         for tok in ${disks[$1]}; do
  97                 filedev="$FILEDEV_PREFIX-$tok"
  98                 # if $filedev exists we are requesting the same vdev type twice
  99                 # in a row (eg. pool of striped mirrors): add a random suffix.
 100                 while [[ -f $filedev ]]; do
 101                         filedev="$filedev.$RANDOM"
 102                 done
 103                 truncate -s $SPA_MINDEVSIZE "$filedev"
 104                 config="$config $filedev"
 105         done
 106         echo "$config"
 107 }
 108
 109 log_assert "'zpool split' should work only on mirror VDEVs"
 110 log_onexit cleanup
 111
 112 # "good" and "bad" pool layouts
 113 # first token is always used with "zpool create"
 114 # second to last tokens, if any, are used with "zpool add"
 115 typeset -a goodconfs=("m" "m l" "m s" "m c" "m m" "m3" "m3 m3" "m m3 l s c" "m m sc")
 116 typeset -a badconfs=("d" "z1" "z2" "z3" "m d" "m3 d" "m z1" "m z2" "m z3")
 117 typeset FILEDEV_PREFIX="$TEST_BASE_DIR/filedev"
 118 typeset altroot="$TESTDIR/altroot-$TESTPOOL2"
 119
 120 # Create pools with various VDEV layouts and verify only mirrors can be split
 121 for config in "${goodconfs[@]}"
 122 do
 123         create_config="${config%% *}"
 124         add_config="$(awk '{$1= "";print $0}' <<< $config)"
 125         log_must zpool create $TESTPOOL $(pool_config $create_config)
 126         for vdev in $add_config; do
 127                 log_must zpool add $TESTPOOL -f $(pool_config $vdev)
 128         done
 129         log_must zpool split -R $altroot $TESTPOOL $TESTPOOL2
 130         log_must poolexists $TESTPOOL2
 131         log_must test "$(get_pool_prop 'altroot' $TESTPOOL2)" == "$altroot"
 132         cleanup
 133 done
 134
 135 # Every other pool layout should *not* be splittable
 136 for config in "${badconfs[@]}"
 137 do
 138         create_config="${config%% *}"
 139         add_config="$(awk '{$1= "";print $0}' <<< $config)"
 140         log_must zpool create $TESTPOOL $(pool_config $create_config)
 141         for vdev in $add_config; do
 142                 log_must zpool add $TESTPOOL -f $(pool_config $vdev)
 143         done
 144         log_mustnot zpool split -R $altroot $TESTPOOL $TESTPOOL2
 145         log_mustnot poolexists $TESTPOOL2
 146         cleanup
 147 done
 148
 149 log_pass "'zpool split' works only on mirror VDEVs"