#!/usr/bin/ksh -p
#
# CDDL HEADER START
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# The contents of this file are subject to the terms of the
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# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
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# Copyright (c) 2016 by Delphix. All rights reserved.
#
. $STF_SUITE/tests/functional/truncate/truncate.cfg
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# Tests file truncation within ZFS while a sync operation is in progress.
#
# STRATEGY:
# 1. Copy a file to ZFS filesystem
# 2. Copy /dev/null to same file on ZFS filesystem
# 3. Execute a sync command
#
verify_runnable "both"
function cleanup
{
[[ -e $TESTDIR ]] && log_must rm -rf $TESTDIR/*
[[ -f $srcfile ]] && rm -f $srcfile
}
log_assert "Ensure zeroed file gets written correctly during a sync operation"
srcfile="/tmp/cosmo.$$"
log_must dd if=/dev/urandom of=$srcfile bs=1024k count=1
log_onexit cleanup
log_must cp $srcfile $TESTDIR/$TESTFILE
log_must cp /dev/null $TESTDIR/$TESTFILE
log_must sync
if [[ -s $TESTDIR/$TESTFILE ]]; then
log_note "$(ls -l $TESTDIR/$TESTFILE)"
log_fail "testfile not truncated"
fi
log_pass "Successful truncation while a sync operation is in progress."