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
45verify_runnable "both"
46
47function cleanup
48{
49	[[ -e $TESTDIR ]] && log_must rm -rf $TESTDIR/*
50	[[ -f $srcfile ]] && rm -f $srcfile
51}
52
53log_assert "Ensure zeroed file gets written correctly during a sync operation"
54
55srcfile="/tmp/cosmo.$$"
56log_must dd if=/dev/urandom of=$srcfile bs=1024k count=1
57
58log_onexit cleanup
59log_must cp $srcfile $TESTDIR/$TESTFILE
60log_must cp /dev/null $TESTDIR/$TESTFILE
61sync_all_pools
62if [[ -s $TESTDIR/$TESTFILE ]]; then
63	log_note "$(ls -l $TESTDIR/$TESTFILE)"
64	log_fail "testfile not truncated"
65fi
66
67log_pass "Successful truncation while a sync operation is in progress."
68