From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f180.google.com ([209.85.212.180]:38448 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751042AbaEWSPm (ORCPT ); Fri, 23 May 2014 14:15:42 -0400 From: Filipe David Borba Manana To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, Filipe David Borba Manana Subject: [PATCH] xfstests: add test for btrfs send with large xattrs Date: Fri, 23 May 2014 20:15:30 +0100 Message-Id: <1400872530-7706-1-git-send-email-fdmanana@gmail.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Verify that btrfs send is able to replicate xattrs larger than PATH_MAX. This is possible if the b+tree leaf size is larger than 4Kb (mkfs.btrfs's default is max(16Kb, PAGE_SIZE) as of btrfs-progs v3.12, and max(4Kb, PAGE_SIZE in older versions). This issue is fixed by the following linux kernel btrfs patch: Btrfs: send, use the right limits for xattr names and values Signed-off-by: Filipe David Borba Manana --- tests/btrfs/053 | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/053.out | 1 + tests/btrfs/group | 1 + 3 files changed, 110 insertions(+) create mode 100755 tests/btrfs/053 create mode 100644 tests/btrfs/053.out diff --git a/tests/btrfs/053 b/tests/btrfs/053 new file mode 100755 index 0000000..4dbdf59 --- /dev/null +++ b/tests/btrfs/053 @@ -0,0 +1,108 @@ +#! /bin/bash +# FS QA Test No. btrfs/053 +# +# Verify that btrfs send is able to replicate xattrs larger than PATH_MAX. +# This is possible if the b+tree leaf size is larger than 4Kb (mkfs.btrfs's +# default is max(16Kb, PAGE_SIZE) as of btrfs-progs v3.12, and max(4Kb, +# PAGE_SIZE in older versions). +# +# This issue is fixed by the following linux kernel btrfs patch: +# +# Btrfs: send, use the right limits for xattr names and values +# +#----------------------------------------------------------------------- +# Copyright (c) 2014 Filipe Manana. 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" + +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + rm -fr $send_files_dir + rm -fr $tmp +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr + +# real QA test starts here +_supported_fs btrfs +_supported_os Linux +_require_scratch +_require_fssum +_require_attrs +_need_to_be_root + +# max(16384, PAGE_SIZE) is the default leaf/node size on btrfs-progs v3.12+. +# Older versions just use max(4096, PAGE_SIZE). +# mkfs.btrfs can't create an fs with a leaf/node size smaller than PAGE_SIZE. +leaf_size=$(echo -e "16384\n`getconf PAGE_SIZE`" | sort -nr | head -1) + +send_files_dir=$TEST_DIR/btrfs-test-$seq + +rm -f $seqres.full +rm -fr $send_files_dir +mkdir $send_files_dir + +_scratch_mkfs "-l $leaf_size" >/dev/null 2>&1 +_scratch_mount + +echo "hello world" > $SCRATCH_MNT/foobar + +$SETFATTR_PROG -n user.xattr_name_1 -v `$PERL_PROG -e 'print "A" x 6000;'` \ + $SCRATCH_MNT/foobar + +_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1 +run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1 + +# Update existing xattr value and add a new xattr too. +$SETFATTR_PROG -n user.xattr_name_1 -v `$PERL_PROG -e 'print "Z" x 6666;'` \ + $SCRATCH_MNT/foobar +$SETFATTR_PROG -n user.xattr_name_2 -v `$PERL_PROG -e 'print "U" x 5555;'` \ + $SCRATCH_MNT/foobar + +_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2 +run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \ + -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2 + +_run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $send_files_dir/1.snap +_run_btrfs_util_prog send $SCRATCH_MNT/mysnap2 -f $send_files_dir/2.snap + +_scratch_unmount +_check_scratch_fs + +_scratch_mkfs "-l $leaf_size" >/dev/null 2>&1 +_scratch_mount + +_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap +run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1 + +_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/2.snap +run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2 + +_check_scratch_fs + +status=0 +exit diff --git a/tests/btrfs/053.out b/tests/btrfs/053.out new file mode 100644 index 0000000..4c61638 --- /dev/null +++ b/tests/btrfs/053.out @@ -0,0 +1 @@ +QA output created by 053 diff --git a/tests/btrfs/group b/tests/btrfs/group index 5ff9b8e..ea49c5c 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -55,3 +55,4 @@ 050 auto 051 auto quick 052 auto quick +053 auto quick -- 1.9.1