usr/src/test/zfs-tests/tests/functional/truncate/truncate_002_pos.ksh

   1 #!/usr/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) 2016 by Delphix. All rights reserved.
  30 #
  31
  32 . $STF_SUITE/tests/functional/truncate/truncate.cfg
  33 . $STF_SUITE/include/libtest.shlib
  34
  35 #
  36 # DESCRIPTION:
  37 # Tests file truncation within ZFS while a sync operation is in progress.
  38 #
  39 # STRATEGY:
  40 # 1. Copy a file to ZFS filesystem
  41 # 2. Copy /dev/null to same file on ZFS filesystem
  42 # 3. Execute a sync command
  43 #
  44
  45 verify_runnable "both"
  46
  47 function cleanup
  48 {
  49         [[ -e $TESTDIR ]] && log_must rm -rf $TESTDIR/*
  50         [[ -f $srcfile ]] && rm -f $srcfile
  51 }
  52
  53 log_assert "Ensure zeroed file gets written correctly during a sync operation"
  54
  55 srcfile="/tmp/cosmo.$$"
  56 log_must dd if=/dev/urandom of=$srcfile bs=1024k count=1
  57
  58 log_onexit cleanup
  59 log_must cp $srcfile $TESTDIR/$TESTFILE
  60 log_must cp /dev/null $TESTDIR/$TESTFILE
  61 log_must sync
  62 if [[ -s $TESTDIR/$TESTFILE ]]; then
  63         log_note "$(ls -l $TESTDIR/$TESTFILE)"
  64         log_fail "testfile not truncated"
  65 fi
  66
  67 log_pass "Successful truncation while a sync operation is in progress."