ext4: add dump/restore test

This test case will first use fsstress to fill a file system, then
dump it to standard output and restore it from standard input, finally
check that the original contents and the new contents generated by
restore tool will be same.

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

common/config

@@ -188,6 +188,8 @@ export LOGGER_PROG="`set_prog_path logger`"
 export DBENCH_PROG="`set_prog_path dbench`"
 export DMSETUP_PROG="`set_prog_path dmsetup`"
 export WIPEFS_PROG="`set_prog_path wipefs`"
+export DUMP_PROG="`set_prog_path dump`"
+export RESTORE_PROG="`set_prog_path restore`"
 
 # Generate a comparable xfsprogs version number in the form of
 # major * 10000 + minor * 100 + release

tests/ext4/004

@@ -0,0 +1,89 @@
+#! /bin/bash
+# FSQA Test No. 004
+#
+# Test "dump | restore"(as opposed to a tape)
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2014 Fujitsu.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+	# remove the generated data, which is much and meaningless.
+	rm -rf $restore_dir
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+dump_dir=$SCRATCH_MNT/dump_restore_dir
+restore_dir=$TEST_DIR/dump_restore_dir
+
+workout()
+{
+	echo "Run fsstress" >> $seqres.full
+	args=`_scale_fsstress_args -z -f creat=5 -f write=20 -f mkdir=5 -n 1000 -p 15 -d $dump_dir`
+	echo "fsstress $args" >> $seqres.full
+
+	$FSSTRESS_PROG $args >> $seqres.full 2>&1
+
+	echo "start Dump/Restore" >> $seqres.full
+	cd $TEST_DIR
+
+	$DUMP_PROG -0 -f - $dump_dir 2>/dev/null | $RESTORE_PROG -urvf - >> $seqres.full 2>&1
+	if [ $? -ne 0 ];then
+		_fail "Dump/Restore failed"
+	fi
+
+	rm -rf restoresymtable
+}
+
+# real QA test starts here
+_supported_fs ext4
+_supported_os Linux
+
+_require_test
+_require_scratch
+
+_require_command $DUMP_PROG
+_require_command $RESTORE_PROG
+
+rm -f $seqres.full
+echo "Silence is golden"
+
+_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full 2>&1
+_scratch_mount
+rm -rf $restore_dir $TEST_DIR/restoresymtable
+
+workout
+diff -r $dump_dir $restore_dir
+
+status=0
+exit

tests/ext4/004.out

@@ -0,0 +1,2 @@
+QA output created by 004
+Silence is golden

tests/ext4/group

@@ -6,6 +6,7 @@
 001 auto prealloc quick
 002 auto quick prealloc
 003 auto quick
+004 auto dump
 271 auto rw quick
 301 aio dangerous ioctl rw stress
 302 aio dangerous ioctl rw stress
@@ -14,4 +15,4 @@
 305 auto
 306 auto rw resize quick
 307 auto ioctl rw
-308 auto ioctl rw prealloc quick
+308 auto ioctl rw prealloc quick