mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Filipe Manana
2b621418f4
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. This test is motivated by a failure in btrfs where it triggered an assertion when using the no-holes feature, that is, when running with MKFS_OPTIONS="-O no-holes". The btrfs issue is fixed by a patch for the linux kernel titled: "Btrfs: fix assertion on fsync of regular file when using no-holes feature" Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
62 lines
1.4 KiB
Bash
Executable File
62 lines
1.4 KiB
Bash
Executable File
#! /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.
|
|
#
|
|
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/filter
|
|
. ./common/dmflakey
|
|
|
|
# real QA test starts here
|
|
_supported_fs generic
|
|
_supported_os Linux
|
|
_require_scratch
|
|
_require_xfs_io_command "falloc"
|
|
_require_dm_target flakey
|
|
|
|
rm -f $seqres.full
|
|
|
|
_scratch_mkfs >>$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
|