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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2020 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. 045
#
# Test subdirectory limit of ext4.
# We create more than 65000 subdirectories on the ext4 filesystem.
#
. ./common/preamble
_begin_fstest auto dir
SHORT_DIR=1
LONG_DIR=2
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs ext4
_require_scratch
_require_test_program "t_create_short_dirs"
_require_test_program "t_create_long_dirs"
_require_dumpe2fs
echo "Silence is golden"
# Run a test case
# $1: Number of directories to create
# $2: create short dir or long dir
# $3: parent directory
workout()
{
local dir_name_len=""
if [ $2 -eq $SHORT_DIR ]; then
dir_name_len="short name"
else
dir_name_len="long name"
fi
echo "Num of dirs to create: $1, Dir name len: $dir_name_len, " \
"Parent dir: $3" >> $seqres.full
_scratch_mkfs "-O extent,dir_nlink,dir_index -I 256" >> $seqres.full 2>&1
_scratch_mount
# create directories
mkdir -p $3 2> /dev/null
if [ $2 -eq $SHORT_DIR ]; then
$here/src/t_create_short_dirs $1 $3
else
$here/src/t_create_long_dirs $1 $3
fi
if [ $? -ne 0 ]; then
nr_dirs=`ls $3 | wc -l`
echo "Failed to create directories - $nr_dirs"
_scratch_unmount
return
fi
# delete directories
cd $3
ls | xargs rmdir
if [ $? -ne 0 ]; then
echo "Failed to remove directories in $3"
cd - > /dev/null
_scratch_unmount
return
fi
cd - > /dev/null
_scratch_unmount
# check dir_nlink is set
$DUMPE2FS_PROG -h $SCRATCH_DEV 2>> $seqres.full | grep '^Filesystem features' | grep -q dir_nlink
if [ $? -ne 0 ]; then
echo "Feature dir_nlink is not set, please check $seqres.full for detail"
return
fi
}
# main
DIR_NUM=65537
DIR_LEN=( $SHORT_DIR $LONG_DIR )
PARENT_DIR="$SCRATCH_MNT/subdir"
for ((i = 0; i < 2; i++)); do
workout $DIR_NUM ${DIR_LEN[$i]} $PARENT_DIR
done
status=0
exit
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