#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2007 Silicon Graphics, Inc.  All Rights Reserved.
#
# FSQA Test No. 167
#
# unwritten extent conversion test
#
. ./common/preamble
_begin_fstest rw metadata auto stress prealloc

workout()
{
	procs=100
	nops=15000
	FSSTRESS_ARGS=`_scale_fsstress_args -d $SCRATCH_MNT -p $procs -n $nops`
	_run_fsstress_bg $FSSTRESS_ARGS
	sleep 2
}

# Import common functions.
. ./common/filter

_require_xfs_io_command "falloc"
_require_scratch
_scratch_mkfs_xfs >/dev/null 2>&1
_scratch_mount

# fast devices can consume disk space at a rate of 1GB every 5s via the
# background workload. With 50 test loops, at 1 second per loop, that means we
# need at least 10GB of disk space to ensure this test will not fail with ENOSPC
# errors.
_require_fs_space $SCRATCH_MNT 10485760

TEST_FILE=$SCRATCH_MNT/test_file
TEST_PROG=$here/src/unwritten_sync
LOOPS=$((5 * $TIME_FACTOR))

echo "*** test unwritten extent conversion under heavy I/O"
rm -f $TEST_FILE
workout
$TEST_PROG $LOOPS $TEST_FILE

_kill_fsstress

echo "     *** test done"

status=0
exit
