usr/src/test/zfs-tests/tests/functional/reservation/reservation_020_pos.sh

   1 #!/usr/bin/bash -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         if datasetexists $TESTPOOL/$TESTVOL; then
  36                 # Destroy first vol and descendants in one go.
  37                 log_must zfs destroy -Rf $TESTPOOL/$TESTVOL
  38         fi
  39 }
  40
  41 log_onexit cleanup
  42
  43 log_assert "Cloning a thick provisioned volume results in a sparse volume"
  44
  45 space_avail=$(get_prop available $TESTPOOL)
  46 (( vol_size = (space_avail / 4) & ~(1024 * 1024 - 1) ))
  47
  48 vol=$TESTPOOL/$TESTVOL
  49 snap=$vol@clone
  50 vol2=$TESTPOOL/$TESTVOL2
  51
  52 # Create sparse vol and verify
  53 log_must zfs create -V $vol_size $vol
  54 resv=$(get_prop refreservation $vol)
  55 expected=$(volsize_to_reservation $vol $vol_size)
  56 log_must test $resv -eq $expected
  57
  58 # Clone it
  59 log_must zfs snapshot $snap
  60 log_must zfs clone $snap $vol2
  61
  62 # Verify
  63 resv=$(get_prop refreservation $vol2)
  64 log_must test $resv -eq 0
  65
  66 log_pass "Cloning a thick provisioned volume results in a sparse volume"