2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2017 Chengguang Xu <cgxu519@icloud.com>
7 # Inspired by syncfs bug of overlayfs which does not sync dirty inodes in
8 # underlying filesystem.
10 # Create a small file then run syncfs and shutdown filesystem(or underlying
11 # filesystem of overlayfs) to check syncfs result.
13 # Test will be skipped if filesystem(or underlying filesystem of overlayfs)
14 # does not support shutdown.
17 _begin_fstest auto quick shutdown metadata
21 # Import common functions.
24 # real QA test starts here
29 _require_scratch_shutdown
30 _require_xfs_io_command "syncfs"
32 _scratch_mkfs >/dev/null 2>&1
35 # Background writeback will flush dirty inode by dirty ratio and dirty time
36 # period(default 30 seconds), in order to avoid interference from it,
37 # run sync before test to make all dirty inodes clean, and it also
38 # accelerates syncfs on testing filesystem so that test case can finish
43 # Large fs has a huge size .use_space file, will take long time on running
44 # fssum $SCRATCH_MNT. So change the target path to a sub-dir of $SCRATCH_MNT.
45 localdir=$SCRATCH_MNT/dir
47 $XFS_IO_PROG -f -c "pwrite 0 4K" $localdir/testfile >/dev/null 2>&1
49 # fssum used for comparing checksum of test file(data & metedata),
50 # exclude checking about atime, block structure, open error.
51 $FSSUM_PROG -ugomAcdES -f -w $tmp.fssum $localdir
52 $XFS_IO_PROG -c "syncfs" $localdir/testfile >/dev/null 2>&1
55 $FSSUM_PROG -r $tmp.fssum $localdir