#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#
# FSQA Test No. 171
#
# Check the filestreams allocator is doing its job.
# Multi-file data streams should always write into seperate AGs.
#
. ./common/preamble
_begin_fstest rw filestreams

# Import common functions.
. ./common/filter
. ./common/filestreams

# real QA test starts here
_supported_fs xfs

_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

# This test tries to get close to the exact point at which the filestreams
# allocator will start to allocate space from some AG into more than one
# stream.  Newer feature sets (e.g. reflink) have increased the size of the log
# for small filesystems, so we make sure there's one more AG than filestreams
# to encourage the allocator to skip whichever AG owns the log.
#
# This test exercises 64x 16MB AGs, 8 filestreams, 100 files per stream, and
# 1MB per file.
_test_streams 65 16 8 100 1 1 0
_test_streams 65 16 8 100 1 1 1
_test_streams 65 16 8 100 1 0 0
_test_streams 65 16 8 100 1 0 1

status=0
exit