#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 114
#
# Make sure that we can handle insert-range followed by collapse-range.
# In particular, make sure that fcollapse works for rmap when the
# extents on either side of the collapse area are mergeable.
#
. ./common/preamble
_begin_fstest auto quick clone rmap collapse insert prealloc

# Import common functions.
. ./common/filter
. ./common/reflink

# real QA test starts here
_supported_fs xfs
_require_test_program "punch-alternating"
_require_cp_reflink
_require_scratch_reflink
_require_xfs_scratch_rmapbt
_require_xfs_io_command "falloc"
_require_xfs_io_command "fcollapse"
_require_xfs_io_command "finsert"

rm -f "$seqres.full"

echo "Format and mount"
_scratch_mkfs > "$seqres.full" 2>&1
_scratch_mount
blksz=65536
blocks1=150	# enough extents to force btree format
blocks2=16	# local format
len1=$((blocks1 * blksz))
len2=$((blocks2 * blksz))
file_blksz=$(_get_file_block_size $SCRATCH_MNT)

_require_congruent_file_oplen $SCRATCH_MNT $blksz

echo "Create some files"
$XFS_IO_PROG -f \
	-c "falloc 0 $len1" \
	-c "pwrite -S 0x68 -b 1048576 0 $len1" \
	$SCRATCH_MNT/f1 >> $seqres.full
$XFS_IO_PROG -f \
	-c "falloc 0 $len2" \
	-c "pwrite -S 0x68 -b 1048576 0 $len2" \
	$SCRATCH_MNT/f2 >> $seqres.full

$here/src/punch-alternating -o $((16 * blksz / file_blksz)) \
	-s $((blksz / file_blksz)) \
	-i $((blksz * 2 / file_blksz)) \
	$SCRATCH_MNT/f1 >> "$seqres.full"

echo "Insert and write file range"
$XFS_IO_PROG \
	-c "finsert $((8 * blksz)) $blksz" \
	-c "pwrite -S 0x69 $((8 * blksz)) $blksz" \
	-c "fsync" \
	$SCRATCH_MNT/f1 >> $seqres.full
$XFS_IO_PROG \
	-c "finsert $((8 * blksz)) $blksz" \
	-c "pwrite -S 0x69 $((8 * blksz)) $blksz" \
	-c "fsync" \
	$SCRATCH_MNT/f2 >> $seqres.full

# Make reflink copies to force it to use the fancy rmap operations.
# The test's functionality doesn't depend on the fs supporting reflink.
_cp_reflink $SCRATCH_MNT/f1 $SCRATCH_MNT/e1 >> $seqres.full 2>&1
_cp_reflink $SCRATCH_MNT/f2 $SCRATCH_MNT/e2 >> $seqres.full 2>&1

echo "f1 bmap" >> $seqres.full
$XFS_IO_PROG -c 'bmap -elpv' $SCRATCH_MNT/f1 >> $seqres.full
echo "f2 bmap" >> $seqres.full
$XFS_IO_PROG -c 'bmap -elpv' $SCRATCH_MNT/f2 >> $seqres.full
echo "fsmap" >> $seqres.full
$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT >> $seqres.full

echo "Remount"
_scratch_unmount
_scratch_xfs_check
_scratch_mount

echo "Collapse file"
$XFS_IO_PROG -c "fcollapse $((8 * blksz)) $blksz" $SCRATCH_MNT/f1 >> $seqres.full
$XFS_IO_PROG -c "fcollapse $((8 * blksz)) $blksz" $SCRATCH_MNT/f2 >> $seqres.full

echo "f1 bmap" >> $seqres.full
$XFS_IO_PROG -c 'bmap -elpv' $SCRATCH_MNT/f1 >> $seqres.full
echo "f2 bmap" >> $seqres.full
$XFS_IO_PROG -c 'bmap -elpv' $SCRATCH_MNT/f2 >> $seqres.full
echo "fsmap" >> $seqres.full
$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT >> $seqres.full

echo "Check file"
md5sum $SCRATCH_MNT/f1 | _filter_scratch
md5sum $SCRATCH_MNT/f2 | _filter_scratch
od -tx1 -Ad -c $SCRATCH_MNT/f1 >> $seqres.full
od -tx1 -Ad -c $SCRATCH_MNT/f2 >> $seqres.full

# success, all done
status=0
exit