tests/zfs-tests/tests/functional/reservation/reservation_006_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 2009 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 # Reservations (if successfully set) guarantee a minimum amount of space
  39 # for a dataset. Unlike quotas however there should be no restrictions
  40 # on accessing space outside of the limits of the reservation (if the
  41 # space is available in the pool). Verify that in a filesystem with a
  42 # reservation set that its possible to create files both within the
  43 # reserved space and also outside.
  44 #
  45 # STRATEGY:
  46 # 1) Create a filesystem
  47 # 2) Get the space used and available in the pool
  48 # 3) Set a reservation on the filesystem
  49 # 4) Verify can write a file that is bigger than the reserved space
  50 #
  51 # i.e. we start writing within the reserved region and then continue
  52 # for 20MB outside it.
  53 #
  54
  55 verify_runnable "both"
  56
  57 function cleanup
  58 {
  59         [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1
  60         log_must zfs set reservation=none $TESTPOOL/$TESTFS
  61 }
  62
  63 log_onexit cleanup
  64
  65 log_assert "Verify can create files both inside and outside reserved areas"
  66
  67 space_used=`get_prop used $TESTPOOL`
  68
  69 log_must zfs set reservation=$RESV_SIZE $TESTPOOL/$TESTFS
  70
  71 #
  72 # Calculate how many writes of BLOCK_SIZE it would take to fill
  73 # up RESV_SIZE + 20971520 (20 MB).
  74 #
  75 fill_size=`expr $RESV_SIZE + 20971520`
  76 write_count=`expr $fill_size / $BLOCK_SIZE`
  77
  78 log_must file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE \
  79     -c $write_count -d 0
  80
  81 log_pass "Able to create files inside and outside reserved area"