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Date: Thu, 4 Dec 2014 15:29:59 +0800
From: Eryu Guan <eguan@...hat.com>
To: Xiaoguang Wang <wangxg.fnst@...fujitsu.com>
Cc: fstests@...r.kernel.org, linux-ext4@...r.kernel.org,
david@...morbit.com
Subject: Re: [PATCH v2] ext4/004: add dump/restore test
On Wed, Dec 03, 2014 at 05:47:18PM +0800, Xiaoguang Wang wrote:
> Hi,
>
> Thanks for reviewing, and I have one question below, please have a check :)
>
> On 12/03/2014 03:49 PM, Eryu Guan wrote:
> > On Wed, Dec 03, 2014 at 02:40:59PM +0800, Xiaoguang Wang wrote:
> >> 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.
> >
> > For the subject "[PATCH v2] ext4/004: add dump/restore test"
> >
> > The seq number can be skipped for new test.
>
> OK, will remove it.
> >
> >>
> >> Signed-off-by: Xiaoguang Wang <wangxg.fnst@...fujitsu.com>
> >> ---
> >> common/config | 2 ++
> >> tests/ext4/004 | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >> tests/ext4/004.out | 2 ++
> >> tests/ext4/group | 3 +-
> >> 4 files changed, 95 insertions(+), 1 deletion(-)
> >> create mode 100755 tests/ext4/004
> >> create mode 100644 tests/ext4/004.out
> >>
> >> diff --git a/common/config b/common/config
> >> index 1cb08c0..e9971fd 100644
> >> --- a/common/config
> >> +++ b/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
> >> diff --git a/tests/ext4/004 b/tests/ext4/004
> >> new file mode 100755
> >> index 0000000..00262dc
> >> --- /dev/null
> >> +++ b/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.*
> >> + rm -rf $restoredir
> >> + rm -rf $dumpdir
> >
> > $restoredir should be rm'ed before running the test, as part of test
> > setup not cleanup, as Dave pointed out.
>
> I wonder why we should not rm $restoredir, in which there will be much
> data generated by restore, and these data are meaningless ?
Usually we leave TEST_DEV populated and being used over time, so you
don't have to remove new files generated by the test.
But if the generated data takes a lot of space and fills TEST_DEV
quickly you can remove the files in cleanup, maybe add some comments
to explain why.
Thanks,
Eryu
> >
> > $dumpdir doesn't need cleanup, scratch dev will be recreated in next
> > test run, Dave pointed this out too.
>
> OK, sorry for missing this.
> >
> > Also the var names should be "$restore_dir" and "$dump_dir"
> >
> >> +}
> >> +
> >> +# get standard environment, filters and checks
> >> +. ./common/rc
> >> +. ./common/filter
> >> +
> >> +dump_dir=$SCRATCH_MNT/dump_restore_dir
> >> +restore_dir=$TEST_DIR/dump_restore_dir
> >> +
> >> +_workout()
> >
> > Local function doesn't need "_" prefix
>
> OK.
> >
> >> +{
> >> + echo "Run fsstress" >> $seqres.full 2>&1
> >
> > 2>&1 of an echo seems useless to me
> >
> >> + 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 2>&1
> >
> > here too
> >
> >> + 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 $TEST_DIR/*
> >
> > Just remove $restore_dir and restoresymtable, not other files, test
> > dev is supposed to be aged.
>
> OK, i see, thanks.
> I'll send a V3 later.
>
> Regards,
> Xiaoguang Wang
>
> >
> > Thanks,
> > Eryu
> >
> >> +
> >> +_workout
> >> +diff -r $dump_dir $restore_dir
> >> +
> >> +status=0
> >> +exit
> >> diff --git a/tests/ext4/004.out b/tests/ext4/004.out
> >> new file mode 100644
> >> index 0000000..af8614a
> >> --- /dev/null
> >> +++ b/tests/ext4/004.out
> >> @@ -0,0 +1,2 @@
> >> +QA output created by 004
> >> +Silence is golden
> >> diff --git a/tests/ext4/group b/tests/ext4/group
> >> index aa6a53b..e7f1f2a 100644
> >> --- a/tests/ext4/group
> >> +++ b/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
> >> \ No newline at end of file
> >> +308 auto ioctl rw prealloc quick
> >> --
> >> 1.8.3.1
> >>
> >> --
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> >
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