usr/src/test/zfs-tests/tests/functional/reservation/reservation_001_pos.sh

   1 #!/usr/bin/bash -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # The contents of this file are subject to the terms of the
   6 # Common Development and Distribution License (the "License").
   7 # You may not use this file except in compliance with the License.
   8 #
   9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10 # or http://www.opensolaris.org/os/licensing.
  11 # See the License for the specific language governing permissions
  12 # and limitations under the License.
  13 #
  14 # When distributing Covered Code, include this CDDL HEADER in each
  15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16 # If applicable, add the following below this CDDL HEADER, with the
  17 # fields enclosed by brackets "[]" replaced with your own identifying
  18 # information: Portions Copyright [yyyy] [name of copyright owner]
  19 #
  20 # CDDL HEADER END
  21 #
  22
  23 #
  24 # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 #
  29 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
  30 #
  31
  32 . $STF_SUITE/include/libtest.shlib
  33 . $STF_SUITE/tests/functional/reservation/reservation.shlib
  34
  35 #
  36 # DESCRIPTION:
  37 #
  38 # ZFS allows reservations to be set on filesystems and volumes, provided
  39 # the reservation is less than the space available in the pool.
  40 #
  41 # STRATEGY:
  42 # 1) Create a regular and sparse volume
  43 #   (filesystem already created by default_setup)
  44 # 2) Get the space available in the pool
  45 # 3) Set a reservation on the filesystem less than the space available.
  46 # 4) Verify that the 'reservation' property for the filesystem has
  47 #    the correct value.
  48 # 5) Reset the reservation to 'none'
  49 # 6) Repeat steps 2-5 for both volume types
  50 #
  51
  52 verify_runnable "both"
  53
  54 function cleanup
  55 {
  56         for obj in $OBJ_LIST; do
  57                 datasetexists $obj && log_must zfs destroy -f $obj
  58         done
  59 }
  60
  61 log_onexit cleanup
  62
  63 log_assert "Verify that to set a reservation on a filesystem or volume must " \
  64     "use value smaller than space available property of pool"
  65
  66 space_avail=`get_prop available $TESTPOOL`
  67
  68 if ! is_global_zone ; then
  69         OBJ_LIST=""
  70 else
  71         OBJ_LIST="$TESTPOOL/$TESTVOL $TESTPOOL/$TESTVOL2"
  72
  73         ((vol_set_size = space_avail / 4))
  74         vol_set_size=$(floor_volsize $vol_set_size)
  75         ((sparse_vol_set_size = space_avail * 4))
  76         sparse_vol_set_size=$(floor_volsize $sparse_vol_set_size)
  77
  78         #
  79         # Note that when creating a regular volume we are implicitly
  80         # setting a reservation upon it (i.e. the size of the volume)
  81         # which we reset back to zero initially.
  82         #
  83         log_must zfs create -V $vol_set_size $TESTPOOL/$TESTVOL
  84         log_must zfs set reservation=none $TESTPOOL/$TESTVOL
  85         log_must zfs set refreservation=none $TESTPOOL/$TESTVOL
  86         log_must zfs create -s -V $sparse_vol_set_size $TESTPOOL/$TESTVOL2
  87 fi
  88
  89
  90 for obj in $TESTPOOL/$TESTFS $OBJ_LIST; do
  91
  92         space_avail=`get_prop available $TESTPOOL`
  93         resv_size_set=`expr $space_avail - $RESV_DELTA`
  94
  95         #
  96         # For a regular (non-sparse) volume the upper limit
  97         # for reservations is not determined by the space
  98         # available in the pool but rather by the size of
  99         # the volume itself.
 100         #
 101         [[ $obj == $TESTPOOL/$TESTVOL ]] && \
 102             ((resv_size_set = vol_set_size - RESV_DELTA))
 103
 104         log_must zfs set reservation=$resv_size_set $obj
 105
 106         resv_size_get=`get_prop reservation $obj`
 107         if [[ $resv_size_set != $resv_size_get ]]; then
 108                 log_fail "Reservation not the expected value " \
 109                     "($resv_size_set != $resv_size_get)"
 110         fi
 111
 112         log_must zero_reservation $obj
 113
 114         new_space_avail=`get_prop available $obj`
 115
 116         #
 117         # Due to the way space is consumed and released by metadata we
 118         # can't do an exact check here, but we do do a basic sanity
 119         # check.
 120         #
 121         log_must within_limits $space_avail $new_space_avail $RESV_TOLERANCE
 122 done
 123
 124 log_pass "Successfully set reservation on filesystem and volume"