tests/zfs-tests/tests/functional/reservation/reservation_004_pos.ksh

   1 #!/bin/ksh -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 # When a dataset which has a reservation set on it is destroyed,
  39 # the space consumed or reserved by that dataset should be released
  40 # back into the pool.
  41 #
  42 # STRATEGY:
  43 # 1) Create a filesystem, regular and sparse volume
  44 # 2) Get the space used and 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) Destroy the filesystem without resetting the reservation value.
  49 # 6) Verify that the space used and available totals for the pool have
  50 # changed by the expected amounts (within tolerances).
  51 # 7) Repeat steps 3-6 for a regular volume and sparse volume
  52 #
  53
  54 verify_runnable "both"
  55
  56 function cleanup {
  57
  58         for obj in $OBJ_LIST; do
  59                 datasetexists $obj && log_must_busy zfs destroy -f $obj
  60         done
  61 }
  62
  63 log_assert "Verify space released when a dataset with reservation is destroyed"
  64
  65 log_onexit cleanup
  66
  67 log_must zfs create $TESTPOOL/$TESTFS2
  68
  69 space_avail=`get_prop available $TESTPOOL`
  70
  71 if ! is_global_zone ; then
  72         OBJ_LIST="$TESTPOOL/$TESTFS2"
  73 else
  74         OBJ_LIST="$TESTPOOL/$TESTFS2 \
  75                 $TESTPOOL/$TESTVOL $TESTPOOL/$TESTVOL2"
  76
  77         ((vol_set_size = space_avail / 4))
  78         vol_set_size=$(floor_volsize $vol_set_size)
  79         ((sparse_vol_set_size = space_avail * 4))
  80         sparse_vol_set_size=$(floor_volsize $sparse_vol_set_size)
  81
  82         log_must zfs create -V $vol_set_size $TESTPOOL/$TESTVOL
  83         log_must zfs set refreservation=none $TESTPOOL/$TESTVOL
  84         log_must zfs set reservation=none $TESTPOOL/$TESTVOL
  85         log_must zfs create -s -V $sparse_vol_set_size $TESTPOOL/$TESTVOL2
  86 fi
  87
  88 # re-calculate space available.
  89 space_avail=`get_prop available $TESTPOOL`
  90
  91 # Calculate a large but valid reservation value.
  92 resv_size_set=`expr $space_avail - $RESV_DELTA`
  93
  94 for obj in $OBJ_LIST ; do
  95
  96         space_avail=`get_prop available $TESTPOOL`
  97         space_used=`get_prop used $TESTPOOL`
  98
  99         #
 100         # For regular (non-sparse) volumes the upper limit is determined
 101         # not by the space available in the pool but rather by the size
 102         # of the volume itself.
 103         #
 104         [[ $obj == $TESTPOOL/$TESTVOL ]] && \
 105             ((resv_size_set = vol_set_size - RESV_DELTA))
 106
 107         log_must zfs set reservation=$resv_size_set $obj
 108
 109         resv_size_get=`get_prop reservation $obj`
 110         if [[ $resv_size_set != $resv_size_get ]]; then
 111                 log_fail "Reservation not the expected value " \
 112                 "($resv_size_set != $resv_size_get)"
 113         fi
 114
 115         log_must_busy zfs destroy -f $obj
 116
 117         new_space_avail=`get_prop available $TESTPOOL`
 118         new_space_used=`get_prop used $TESTPOOL`
 119
 120         #
 121         # Recent changes to metaslab logic have caused these tests to expand
 122         # outside of their previous tolerance. If this is discovered to be a
 123         # bug, rather than a side effect of some interactions, the reservation
 124         # should be halved again.
 125         #
 126         log_must within_limits $space_used $new_space_used $RESV_TOLERANCE
 127         log_must within_limits $space_avail $new_space_avail $RESV_TOLERANCE
 128 done
 129
 130 log_pass "Space correctly released when dataset is destroyed"