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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. 512
#
# Test that if we have a very small file, with a size smaller than the block
# size, then fallocate a very small range within the block size but past the
# file's current size, fsync the file and then power fail, after mounting the
# filesystem all the file data is there and the file size is correct.
#
. ./common/preamble
_begin_fstest auto quick log prealloc
# Override the default cleanup function.
_cleanup()
{
_cleanup_flakey
cd /
rm -f $tmp.*
}
# Import common functions.
. ./common/filter
. ./common/dmflakey
# real QA test starts here
_supported_fs generic
_require_scratch
_require_xfs_io_command "falloc"
_require_dm_target flakey
_scratch_mkfs >>$seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey
_mount_flakey
$XFS_IO_PROG -f \
-c "pwrite -S 0xb6 0 21" \
-c "falloc 40 40" \
-c "fsync" \
$SCRATCH_MNT/foobar | _filter_xfs_io
# Simulate a power failure and mount the filesystem. We expect no data loss
# and a correct file size.
_flakey_drop_and_remount
echo "File content after power failure:"
od -t x1 -A d $SCRATCH_MNT/foobar
_unmount_flakey
status=0
exit
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