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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 HUAWEI. All Rights Reserved.
# Copyright (c) 2021 Red Hat Inc. All Rights Reserved.
#
# FS QA Test No. 626
#
# Test RENAME_WHITEOUT on filesystem without space to create one more inodes.
# This is a regression test for kernel commit:
# 6b4b8e6b4ad8 ("ext4: ext4: fix bug for rename with RENAME_WHITEOUT")
#
. ./common/preamble
_begin_fstest auto quick rename enospc
# Import common functions.
. ./common/filter
. ./common/populate
. ./common/renameat2
# real QA test starts here
_supported_fs generic
_require_scratch
_require_renameat2 whiteout
_scratch_mkfs_sized $((256 * 1024 * 1024)) >> $seqres.full 2>&1
_scratch_mount
# Create lots of files, to help to trigger the bug easily
NR_FILE=$((4 * 64))
for ((i=0; i<NR_FILE; i++));do
touch $SCRATCH_MNT/srcfile$i
done
# Try to fill the whole fs
nr_free=$(stat -f -c '%f' $SCRATCH_MNT)
blksz="$(_get_block_size $SCRATCH_MNT)"
_fill_fs $((nr_free * blksz)) $SCRATCH_MNT/fill_space $blksz 0 >> $seqres.full 2>&1
# Use empty files to fill the rest
for ((i=0; i<10000; i++));do
touch $SCRATCH_MNT/fill_file$i 2>/dev/null
# Until no more files can be created
if [ $? -ne 0 ];then
break
fi
done
# ENOSPC is expected here
for ((i=0; i<NR_FILE; i++));do
$here/src/renameat2 -w $SCRATCH_MNT/srcfile$i $SCRATCH_MNT/dstfile$i >> $seqres.full 2>&1
done
_scratch_cycle_mount
# Expect no errors at here
for ((i=0; i<NR_FILE; i++));do
ls -l $SCRATCH_MNT/srcfile$i >/dev/null
done
echo "Silence is golden"
# success, all done
status=0
exit
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