usr/src/test/zfs-tests/tests/functional/compression/compress_002_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 2007 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/compression/compress.cfg
  34
  35 #
  36 # DESCRIPTION:
  37 # Create two files of exactly the same size. One with compression
  38 # and one without. Ensure the compressed file is smaller.
  39 #
  40 # NOTE: This test uses a dataset rather than a simple file system.
  41 #
  42 # STRATEGY:
  43 # Create a dataset, turn on compression and create files before
  44 # and after the property change. The compressed file should be smaller.
  45 #
  46
  47 verify_runnable "both"
  48
  49 typeset OP=create
  50
  51 log_assert "Ensure that compressed files in a dataset are smaller."
  52
  53 log_note "Ensure compression is off"
  54 log_must zfs set compression=off $TESTPOOL/$TESTCTR
  55
  56 log_note "Writing file without compression..."
  57 log_must file_write -o $OP -f $TESTDIR1/$TESTFILE0 -b $BLOCKSZ \
  58     -c $NUM_WRITES -d $DATA
  59
  60 log_note "Add compression property to the dataset and write another file"
  61 log_must zfs set compression=on $TESTPOOL/$TESTCTR
  62
  63 log_must file_write -o $OP -f $TESTDIR1/$TESTFILE1 -b $BLOCKSZ \
  64     -c $NUM_WRITES -d $DATA
  65
  66 sleep 60
  67
  68 FILE0_BLKS=`du -k $TESTDIR1/$TESTFILE0 | awk '{ print $1}'`
  69 FILE1_BLKS=`du -k $TESTDIR1/$TESTFILE1 | awk '{ print $1}'`
  70
  71 if [[ $FILE0_BLKS -le $FILE1_BLKS ]]; then
  72         log_fail "$TESTFILE0 is smaller than $TESTFILE1" \
  73                         "($FILE0_BLKS <= $FILE1_BLKS)"
  74 fi
  75
  76 log_pass "$TESTFILE0 is bigger than $TESTFILE1 ($FILE0_BLKS > $FILE1_BLKS)"