tests/zfs-tests/tests/functional/reservation/reservation_020_pos.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 Joyent, Inc.
  15 #
  16
  17 . $STF_SUITE/include/libtest.shlib
  18 . $STF_SUITE/tests/functional/reservation/reservation.shlib
  19
  20 #
  21 # DESCRIPTION:
  22 #
  23 # Cloning a thick provisioned volume results in a sparse volume
  24 #
  25 # STRATEGY:
  26 # 1) Create a thick provisioned volume.
  27 # 2) Snapshot and clone it.
  28 # 3) Verify that the clone is sparse.
  29 #
  30
  31 verify_runnable "global"
  32
  33 function cleanup
  34 {
  35         # Destroy first vol and descendants in one go.
  36         destroy_dataset "$TESTPOOL/$TESTVOL" "-Rf"
  37 }
  38
  39 log_onexit cleanup
  40
  41 log_assert "Cloning a thick provisioned volume results in a sparse volume"
  42
  43 space_avail=$(get_prop available $TESTPOOL)
  44 (( vol_size = (space_avail / 4) & ~(1024 * 1024 - 1) ))
  45
  46 vol=$TESTPOOL/$TESTVOL
  47 snap=$vol@clone
  48 vol2=$TESTPOOL/$TESTVOL2
  49
  50 # Create sparse vol and verify
  51 log_must zfs create -V $vol_size $vol
  52 resv=$(get_prop refreservation $vol)
  53 expected=$(volsize_to_reservation $vol $vol_size)
  54 log_must test $resv -eq $expected
  55
  56 # Clone it
  57 log_must zfs snapshot $snap
  58 log_must zfs clone $snap $vol2
  59
  60 # Verify
  61 resv=$(get_prop refreservation $vol2)
  62 log_must test $resv -eq 0
  63
  64 log_pass "Cloning a thick provisioned volume results in a sparse volume"