tests/xfs/203

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2009 Christoph Hellwig.
#
# FS QA Test No. 203
#
# Test out reallocation of the extent array in xfs_io.
# Based on a testcase from Tomasz Majkowski <moosh009@gmail.com>.
#
. ./common/preamble
_begin_fstest ioctl auto

_write_holes()
{
	file=$1
	holes=$2
	let writes=$holes+1
	let fsize=$(($writes * 0x100000))

	# prevent EOF preallocation from affecting results
	$XFS_IO_PROG -f $file -c "truncate $fsize"

	offset=0
	for i in `seq 0 $writes`; do
		$XFS_IO_PROG -f $file -c "pwrite -b 64k -q $offset 64k"
		let offset=$offset+0x100000
	done
}

#       0: [0..7]: 104..111
#       1: [8..2047]: hole
_filter_bmap()
{
	_filter_scratch |
	awk '$3 ~ /hole/ { print $1, $2, $3; next }
             {print $1, $2; next}'
}

# Override the default cleanup function.
_cleanup()
{
	rm -f $SCRATCH_MNT/r??
}

# Import common functions.
. ./common/filter

_require_scratch
_scratch_mkfs > /dev/null 2>&1
_scratch_mount > /dev/null 2>&1

# The xfs_bmap results in the golden output requires file allocations to align
# to 64k boundaries.
_require_congruent_file_oplen $SCRATCH_MNT 65536

for i in 10 14 15 16 17 28 29 30 31; do
        rm -f $SCRATCH_MNT/hole_file
	_write_holes $SCRATCH_MNT/hole_file${i} ${i}
done

for i in 10 14 15 16 17 28 29 30 31; do
        xfs_bmap $SCRATCH_MNT/hole_file${i} | _filter_bmap
	echo
done

# success, all done
echo "*** done"
status=0