#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
#
# FSQA Test No. XXX
#
# TODO description
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
tmp=/tmp/$$
status=1    # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

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

# get standard environment, filters and checks
. ./common/rc
. ./common/attr
. ./common/filter
. ./common/dmflakey

# real QA test starts here
_supported_fs btrfs
_supported_os Linux
_require_scratch
_require_dm_target flakey
_require_btrfs_fs_feature "no_holes"
_require_btrfs_mkfs_feature "no-holes"
_require_xfs_io_command "sync_range"

rm -f $seqres.full

_scratch_mkfs -O ^no-holes >>$seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey
_mount_flakey

touch $SCRATCH_MNT/foo
# Clear the full sync bit, so that the msync below triggers the fast fsync path.
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/foo

# get rid of the log tree
sync

# Dirty some pages and flush only some of them at the beginning without updating
# the log tree.
$XFS_IO_PROG -c "pwrite -S 0xab 0 1M" \
         -c "sync_range -abw 0 256K" \
         $SCRATCH_MNT/foo >>$seqres.full

$XFS_IO_PROG \
        -c "mmap -w 512K 512K"        \
        -c "mwrite -S 0xcd 512K 512K" \
        -c "msync -s 512K 512K"       \
        -c "munmap"                   \
        $SCRATCH_MNT/foo >>$seqres.full

_flakey_drop_and_remount
_unmount_flakey

# On exit fsck is run and reports missing file extent for range from 0 to 512Kb.

status=0
exit