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Re: [PATCH] xfstests XFS: verify extended attributes after multi-stream

To: rjohnston@xxxxxxx
Subject: Re: [PATCH] xfstests XFS: verify extended attributes after multi-stream xfsdump/xfsrestore
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 07 Oct 2013 15:32:50 -0500
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131007193912.256265551@xxxxxxx>
References: <524AF8AE.5030300@xxxxxxx> <20131007193912.256265551@xxxxxxx>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
On 10/7/13 2:38 PM, rjohnston@xxxxxxx wrote:
> Verify extended attributes are not lost after multi-stream
> xfsdump/xfsrestore of wholly-sparse files.  xfsrestore did not
> recognize that if the LAST header was reached with no restoredsz set,
> (i.e the LAST header is the only header), the following warning is
> displayed:
> 
>   "partial_reg: Out of records. Extend attrs applied early."
> 
> and the extended attributes on the current and following restored
> files are lost.

and restore segfaults too, IIRC.  ;)

So I'm trying to understand - are attrs not applied because xfs_restore
terminates, or is everything fine other than the attrs missing when
it completes successfully?

iows, I get this when it fails:

 QA output created by 350
 Silence is golden.
+ATTR for /mnt/scratch/restore/dumpsrc/sparse0  DOES NOT match
+./tests/xfs/350: line 80: 18231 Segmentation fault      (core dumped) 
$XFSRESTORE_PROG -F -f $tmp.stream1 -f $tmp.stream2 $RESTOREDIR 2>&1 >> 
$seqres.full
+restore failed
+(see /mnt/test2/git/xfstests/results//xfs/350.full for details)

and never get to the point of seeing if attrs are missing.

Anyway, a few other things below for the record...

> Signed-off-by: Rich Johnston <rjohnston@xxxxxxx>
> 
> ---
>  tests/xfs/350     |  134 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/xfs/350.out |    2 
>  tests/xfs/group   |    1 
>  3 files changed, 137 insertions(+)
> 
> Index: b/tests/xfs/350
> ===================================================================
> --- /dev/null
> +++ b/tests/xfs/350
> @@ -0,0 +1,134 @@
> +#! /bin/bash
> +# FS QA Test No. 350

Big jump!

> +#
> +# Verify extended attributes are not lost after multi-stream
> +# xfsdump/xfsrestore of wholly-sparse files.
> +
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2013 SGI.  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=0     # success is the default!
> +trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +. ./common/dump
> +
> +# real QA test starts here
> +_supported_fs xfs
> +_supported_os Linux
> +
> +_require_multi_stream

_require_scratch
_scratch_mkfs
_scratch_mount

> +
> +# dir where we'll restore
> +RESTOREDIR=$SCRATCH_MNT/restore

so you need _require_scratch & _scratch_mkfs before this...

> +
> +# subdir used for dump/restore
> +DUMPDIR=dumpsrc
> +
> +# test extended attributes
> +attr_name=testattr
> +attr_value=1234
> +
> +# setup for test
> +rm -rf $seqres.full

no need to recursively remove a file, but *shrug* :)

> +mkdir -p $RESTOREDIR
> +mkdir -p $SCRATCH_MNT/$DUMPDIR
> +
> +# cleanup for next dump/restore.
> +_clean_dirs()
> +{
> +     rm -rf $SCRATCH_MNT/$DUMPDIR/*
> +     rm -rf $RESTOREDIR/*
> +     rm -f $tmp.stream?
> +}
> +
> +# set the extended attributes on the test files.
> +_set_attrs()
> +{
> +     for fname in $(ls -dD $SCRATCH_MNT/$DUMPDIR/*); do
> +             attr -Rs $attr_name -V $attr_value $fname \
> +             2>&1 >> $seqres.full || _fail "could not set ATTR for $fname"
> +     done

Just out of curiosity, is the root (-R) namespace relevant to the problem?

> +}
> +
> +# perform a dump and restore.
> +_do_dump_restore()
> +{
> +     $XFSDUMP_PROG -L session -M label1 -M label2 -f $tmp.stream1 \
> +             -f $tmp.stream2 $SCRATCH_MNT -s $DUMPDIR \
> +             2>&1 >> $seqres.full || _fail "dump failed"
> +     $XFSRESTORE_PROG -F -f $tmp.stream1 -f $tmp.stream2 $RESTOREDIR \
> +             2>&1 >> $seqres.full || _fail "restore failed"
> +}
> +
> +# verify the restored files extended attributes and
> +# echo the error (if any) so the test will continue
> +_verify_attrs()
> +{
> +     for fname in $(ls -dD $RESTOREDIR/$DUMPDIR/*); do
> +             attr -Rg $attr_name $fname 2>&1 | tee -a $seqres.full | \
> +                     grep $attr_value 2>&1 >> $seqres.full || \
> +                     echo "ATTR for $fname  DOES NOT match"
> +     done
> +}
> +
> +# create files for test 1, a large file so the sparse file
> +# is in the next stream.
> +_create_test1_files()
> +{
> +
> +     dd if=/dev/zero of=$SCRATCH_MNT/$DUMPDIR/10MB bs=1MB \
> +             count=10 2>&1 >> $seqres.full | _filter_dd
> +     truncate --size=1t $SCRATCH_MNT/$DUMPDIR/sparse0 2>&1 \
> +             >> $seqres.full
> +}
> +
> +# create 4 sparse files for test 2
> +_create_test2_files()
> +{
> +     for i in `seq 1 4`; do
> +             truncate --size=1t $SCRATCH_MNT/$DUMPDIR/sparse$i 2>&1 >> \
> +             $seqres.full || _fail "failed to create sparse \"$i\""
> +     done
> +}
> +echo "Silence is golden."
> +echo "Starting Test 1" >> $seqres.full
> +_clean_dirs
> +_create_test1_files
> +_set_attrs
> +_do_dump_restore
> +_verify_attrs
> +
> +echo "Starting Test 2" >> $seqres.full
> +_clean_dirs
> +_create_test2_files
> +_set_attrs
> +_do_dump_restore
> +_verify_attrs
> +
> +# success, all done
> +exit
> Index: b/tests/xfs/350.out
> ===================================================================
> --- /dev/null
> +++ b/tests/xfs/350.out
> @@ -0,0 +1,2 @@
> +QA output created by 350
> +Silence is golden.
> Index: b/tests/xfs/group
> ===================================================================
> --- a/tests/xfs/group
> +++ b/tests/xfs/group
> @@ -179,3 +179,4 @@
>  297 auto freeze
>  298 auto attr symlink quick
>  299 auto quota
> +350 dump auto
> 
> 
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