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#! /bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#
# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
#
# Ensure multiple threads performing write appends to the same ZFS
# file succeed.
#
# STRATEGY:
# 1) Verify this is a multi-processor system
# 2) Create multiple threads with each appending to a file
# 3) Verify that the resulting file is the expected size
#
verify_runnable "both"
log_assert "Ensure multiple threads performing write appends to the same" \
"ZFS file succeed"
#
# $FILE_SIZE is hardcoded into threadsappend.c and is the expected
# size of the file after all the threads have appended to it
#
typeset -i FILE_SIZE=1310720
TESTFILE='testfile-threadsappend'
#
# This test should be run on a multi-processor system because otherwise the FS
# will not be concurrently used by the threads
#
if ! is_mp; then
log_fail "This test should be executed on a multi-processor system."
fi
#
# zfs_threadsappend tries to append to $TESTFILE using threads
# so that the resulting file is $FILE_SIZE bytes in size
#
log_must threadsappend ${TESTDIR}/${TESTFILE}
#
# Check the size of the resulting file
#
SIZE=`ls -l ${TESTDIR}/${TESTFILE} | awk '{print $5}'`
if [[ $SIZE -ne $FILE_SIZE ]]; then
log_fail "'The length of ${TESTDIR}/${TESTFILE}' doesn't equal 1310720."
fi
log_pass "Multiple thread appends succeeded. File size as expected"
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