#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 423
#
# Race scrubbing the inode record while appending to a file.
# This exposes a bug in xfs_bmap_count_blocks where we count delalloc
# extents for di_nblocks if the fork is in extents format, but we don't
# count them if the fork is in btree format.
#
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 7 15

_cleanup()
{
	cd /
	rm -rf $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/fuzzy
. ./common/inject
. ./common/xfs

# real QA test starts here
_supported_fs xfs
_require_test_program "punch-alternating"
_require_xfs_io_command "scrub"
_require_xfs_io_command "falloc"
_require_scratch

echo "Format and populate"
_scratch_mkfs > "$seqres.full" 2>&1
_scratch_mount

$XFS_IO_PROG -f -c 'falloc 0 10m' $SCRATCH_MNT/a >> $seqres.full
$XFS_IO_PROG -f -c 'falloc 0 10m' $SCRATCH_MNT/b >> $seqres.full
$here/src/punch-alternating $SCRATCH_MNT/b
sync

echo "Set up delalloc extents"
$XFS_IO_PROG -c 'pwrite -S 0x66 10m 128k' $SCRATCH_MNT/a >> $seqres.full
$XFS_IO_PROG -c 'pwrite -S 0x66 10m 128k' $SCRATCH_MNT/b >> $seqres.full
$XFS_IO_PROG -c 'bmap -ev' $SCRATCH_MNT/a $SCRATCH_MNT/b > $SCRATCH_MNT/before
cat $SCRATCH_MNT/before >> $seqres.full

echo "Scrub a and b"
$XFS_IO_PROG -x -c 'scrub inode' $SCRATCH_MNT/a >> $seqres.full
$XFS_IO_PROG -x -c 'scrub inode' $SCRATCH_MNT/b >> $seqres.full
$XFS_IO_PROG -c 'bmap -ev' $SCRATCH_MNT/a $SCRATCH_MNT/b > $SCRATCH_MNT/after
cat $SCRATCH_MNT/after >> $seqres.full

echo "Compare extent maps"
diff -u $SCRATCH_MNT/before $SCRATCH_MNT/after

echo "Test done"
status=0
exit