#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2013 STRATO.  All rights reserved.
#
# FSQA Test No. 007
#
# Run fsstress to create a reasonably strange file system, make a
# snapshot (base) and run more fsstress. Then take another snapshot
# (incr) and send both snapshots to a temp file. Remake the file
# system and receive from the files. Check both states with fssum.
#
# creator
owner=list.btrfs@jan-o-sch.net

. ./common/preamble
_begin_fstest auto quick rw metadata send seek

# Override the default cleanup function.
_cleanup()
{
	cd /
	rm -f $tmp.*
	rm -fr $send_files_dir
}

. ./common/filter

_supported_fs btrfs
_require_scratch
_require_fssum
_require_seek_data_hole

send_files_dir=$TEST_DIR/btrfs-test-$seq

rm -fr $send_files_dir
mkdir $send_files_dir

workout()
{
	fsz=$1
	ops=$2

	_scratch_unmount >/dev/null 2>&1
	echo "*** mkfs -dsize=$fsz"    >>$seqres.full
	echo ""                                     >>$seqres.full
	_scratch_mkfs_sized $fsz >>$seqres.full 2>&1
	_scratch_mount "-o noatime"

	run_check $FSSTRESS_PROG -d $SCRATCH_MNT -n $ops $FSSTRESS_AVOID -x \
		"$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/base"

	_btrfs subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/incr

	echo "# $BTRFS_UTIL_PROG send $SCRATCH_MNT/base > ${send_files_dir}/base.snap" \
		>> $seqres.full
	$BTRFS_UTIL_PROG send $SCRATCH_MNT/base > $send_files_dir/base.snap 2>> $seqres.full \
		|| _fail "failed: '$@'"
	echo "# $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/base\
		$SCRATCH_MNT/incr > ${send_files_dir}/incr.snap" >> $seqres.full
	$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/base \
		$SCRATCH_MNT/incr > $send_files_dir/incr.snap 2>> $seqres.full \
		|| _fail "failed: '$@'"

	run_check $FSSUM_PROG -A -f -w $send_files_dir/base.fssum \
		$SCRATCH_MNT/base
	run_check $FSSUM_PROG -A -f -w $send_files_dir/incr.fssum \
		-x $SCRATCH_MNT/incr/base $SCRATCH_MNT/incr

	_scratch_unmount >/dev/null 2>&1
	echo "*** mkfs -dsize=$fsz"    >>$seqres.full
	echo ""                                     >>$seqres.full
	_scratch_mkfs_sized $fsz >>$seqres.full 2>&1
	_scratch_mount "-o noatime"

	_btrfs receive $SCRATCH_MNT < $send_files_dir/base.snap
	run_check $FSSUM_PROG -r $send_files_dir/base.fssum $SCRATCH_MNT/base

	_btrfs receive $SCRATCH_MNT < $send_files_dir/incr.snap
	run_check $FSSUM_PROG -r $send_files_dir/incr.fssum $SCRATCH_MNT/incr
}

echo "*** test send / receive"

fssize=`expr 2000 \* 1024 \* 1024`
ops=200

workout $fssize $ops

echo "*** done"
status=0
exit