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use dd and lmdd for proper direct/buffered IO on linux and irix
Merge of master-melb:xfs-cmds:29214a by kenmcd.

#! /bin/sh
# FSQA Test No. 171
#
# Check the filestreams allocator is doing its job.
# Multi-file data streams should always write into seperate AGs.
#
#-----------------------------------------------------------------------
#  Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#-----------------------------------------------------------------------
#
# creator
owner=dgc@sgi.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
rm -f $seq.full
status=1    # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
	cd /
	rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.filestreams

# real QA test starts here
_supported_fs xfs
_supported_os IRIX Linux

_require_scratch

_check_filestreams_support || _notrun "filestreams not available"

# test large numbers of files, single I/O per file, 120s timeout
# Get close to filesystem full.
# 128 = ENOSPC
# 120 = 93.75% full, gets repeatable failures
# 112 = 87.5% full, should reliably succeed but doesn't *FIXME*
# 100 = 78.1% full, should reliably succeed
_set_stream_timeout_centisecs 12000

_test_streams 64 16 8 100 1 1 0
_test_streams 64 16 8 100 1 1 1
_test_streams 64 16 8 100 1 0 0
_test_streams 64 16 8 100 1 0 1

status=0
exit