#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#
# FSQA Test No. 173
#
# 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 number of streams, multiple I/O per file, 120s timeout
# Because each stream spills over an AG, the stream count needs to
# be less than or equal to half the AG count so we don't run out of AGs.
_set_stream_timeout_centisecs 12000

# This test checks 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.
#
# Exercise 65x 16MB AGs, 32/33 filestreams, 8 files per stream, and 2MB per
# file.
_test_streams 65 16 34 8 2 1 1 fail
_test_streams 65 16 32 8 2 0 1
_test_streams 65 16 34 8 2 0 0 fail
_test_streams 65 16 32 8 2 1 0

status=0
exit