#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Red Hat, Inc.  All Rights Reserved.
#
# FS QA Test No. generic/347
#
# Test very basic thin device usage, exhaustion, and growth
#
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$

status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

BACKING_SIZE=$((500 * 1024 * 1024 / 512))	# 500M
VIRTUAL_SIZE=$((10 * $BACKING_SIZE))		# 5000M
GROW_SIZE=$((100 * 1024 * 1024 / 512))		# 100M

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

_setup_thin()
{
	_dmthin_init $BACKING_SIZE $VIRTUAL_SIZE
	_dmthin_set_queue
	_mkfs_dev $DMTHIN_VOL_DEV
	_dmthin_mount
}

_workout()
{
	# Overfill it by a bit
	for I in `seq 1 500`; do
		$XFS_IO_PROG -f -c "pwrite -W 0 1M" $SCRATCH_MNT/file$I &>/dev/null
	done

	sync

	_dmthin_grow  $GROW_SIZE

	# Write a little more, but don't fill
	for I in `seq 501 510`; do
		$XFS_IO_PROG -f -c "pwrite 0 1M" $SCRATCH_MNT/file$I &>/dev/null
	done
}

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

_supported_fs generic
_require_scratch_nocheck
_require_dm_target thin-pool

_setup_thin
_workout
_dmthin_check_fs
_dmthin_cleanup

echo "=== completed"

status=0
exit