tests/generic/392

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Jaegeuk Kim.  All Rights Reserved.
#
# FS QA Test 392
#
# Test inode's metadata after fsync or fdatasync calls.
# In the case of fsync, filesystem should recover all the inode metadata, while
# recovering i_blocks and i_size at least for fdatasync.
#
. ./common/preamble
_begin_fstest shutdown auto quick metadata punch

status=0	# failure will be detected in runtime!

# Import common functions.
. ./common/filter
. ./common/punch

# real QA test starts here
_supported_fs generic

_require_scratch
_require_scratch_shutdown
_require_xfs_io_command "fpunch"

_scratch_mkfs >/dev/null 2>&1
_require_metadata_journaling $SCRATCH_DEV
_scratch_mount

# This test requires that i_blocks remains unchanged from the start of the
# check_inode_metadata call until after recovery is complete.  fpunch calls
# turn into pagecache writes if the arguments are not aligned to the fs
# blocksize.  If the range being punched is already mapped to a written extent
# and alwayscow is enabled, i_blocks will increase by the size of the COW
# staging extent.  This causes stat to report different numbers for %b, which
# results in a test failure.  Hence do not run this test if XFS is in alwayscow
# mode.
test "$FSTYP" = "xfs" && _require_no_xfs_always_cow

testfile=$SCRATCH_MNT/testfile

# check inode metadata after shutdown
check_inode_metadata()
{
	sync_mode=$1

	# fsync or fdatasync
	if [ $sync_mode = "fsync" ]; then
		stat_opt='-c "b: %b s: %s a: %x m: %y c: %z"'
	else
		stat_opt='-c "b: %b s: %s"'
	fi

	before=`stat "$stat_opt" $testfile`

	$XFS_IO_PROG -c "$sync_mode" $testfile | _filter_xfs_io
	_scratch_shutdown | tee -a $seqres.full
	_scratch_cycle_mount

	after=`stat "$stat_opt" $testfile`

	if [ "$before" != "$after" ]; then
		echo "Before: $before"
		echo "After : $after"
		status=1;	# this is a failure!
	fi
	echo "Before: $before" >> $seqres.full
	echo "After : $after" >> $seqres.full
	rm $testfile
}

# append XX KB with f{data}sync, followed by power-cut
test_i_size()
{
	echo "==== i_size $2 test with $1 ====" | tee -a $seqres.full
	$XFS_IO_PROG -f -c "truncate 4M"	\
			-c "pwrite 0 4M"	\
			-c "fsync"		\
			-c "pwrite 4M $2"	\
			$testfile >/dev/null
	check_inode_metadata $1
}

# update times with f{data}sync, followed by power-cut
test_i_time()
{
	echo "==== i_time test with $1 ====" | tee -a $seqres.full
	$XFS_IO_PROG -f -c "truncate 4M"	\
			-c "pwrite 0 4M"	\
			-c "fsync"		\
			$testfile >/dev/null
	sleep 1
	touch $testfile
	check_inode_metadata $1
}

# punch XX KB with f{data}sync, followed by power-cut
test_punch()
{
	echo "==== fpunch $2 test with $1 ====" | tee -a $seqres.full
	$XFS_IO_PROG -f -c "truncate 4202496"	\
			-c "pwrite 0 4202496"	\
			-c "fsync"		\
			-c "fpunch 4194304 $2"\
			$testfile >/dev/null
	check_inode_metadata $1
}

for i in fsync fdatasync; do
	test_i_size $i 1024
	test_i_size $i 4096
	test_i_time $i
	test_punch $i 1024
	test_punch $i 4096
done

exit