From patchwork Fri May 24 17:34:30 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Sandeen X-Patchwork-Id: 2612141 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 182F63FD4E for ; Fri, 24 May 2013 17:34:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757231Ab3EXRee (ORCPT ); Fri, 24 May 2013 13:34:34 -0400 Received: from sandeen.net ([63.231.237.45]:50480 "EHLO sandeen.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757206Ab3EXRec (ORCPT ); Fri, 24 May 2013 13:34:32 -0400 Received: from liberator.sandeen.net (liberator.sandeen.net [10.0.0.4]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by sandeen.net (Postfix) with ESMTPSA id 6D23F651AC26; Fri, 24 May 2013 12:34:31 -0500 (CDT) Message-ID: <519FA4A6.5050003@sandeen.net> Date: Fri, 24 May 2013 12:34:30 -0500 From: Eric Sandeen User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: Eric Sandeen CC: xfs-oss , linux-btrfs , Koen De Wit Subject: [PATCH V2] xfstests: btrfs/306: simple sparse copy testcase for btrfs References: <519E4590.4080309@redhat.com> In-Reply-To: <519E4590.4080309@redhat.com> X-Enigmail-Version: 1.5.1 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Koen De Wit # Tests file clone functionality of btrfs ("reflinks"): # - Reflink a file # - Reflink the reflinked file # - Modify the original file # - Modify the reflinked file [sandeen: add helpers, make several mostly-cosmetic changes to the original testcase] Signed-off-by: Koen De Wit Signed-off-by: Eric Sandeen --- Originally submitted as test 297 V2: move to test 306, remove "-F" from $XFS_IO_PROG -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/common/rc b/common/rc index fe6bbfc..4560715 100644 --- a/common/rc +++ b/common/rc @@ -2098,6 +2098,27 @@ _require_dumpe2fs() fi } +_require_cp_reflink() +{ + cp --help | grep -q reflink || \ + _notrun "This test requires a cp with --reflink support." +} + +# Given 2 files, verify that they have the same mapping but different +# inodes - i.e. an undisturbed reflink +# Silent if so, make noise if not +_verify_reflink() +{ + # not a hard link or symlink? + cmp -s <(stat -c '%i' $1) <(stat -c '%i' $2) \ + && echo "$1 and $2 are not reflinks: same inode number" + + # same mapping? + diff -u <($XFS_IO_PROG -c "fiemap" $1 | grep -v $1) \ + <($XFS_IO_PROG -c "fiemap" $2 | grep -v $2) \ + || echo "$1 and $2 are not reflinks: different extents" +} + _create_loop_device() { file=$1 diff --git a/tests/btrfs/306 b/tests/btrfs/306 new file mode 100755 index 0000000..1bb8f02 --- /dev/null +++ b/tests/btrfs/306 @@ -0,0 +1,87 @@ +#! /bin/bash +# FS QA Test No. btrfs/306 +# +# Tests file clone functionality of btrfs ("reflinks"): +# - Reflink a file +# - Reflink the reflinked file +# - Modify the original file +# - Modify the reflinked file +# +#----------------------------------------------------------------------- +# Copyright (c) 2013, Oracle and/or its affiliates. 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` +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 $tmp.* +} + +# get standard environment, filters and checks +. common/rc +. common/filter + +# real QA test starts here +_supported_fs btrfs +_supported_os Linux + +_require_xfs_io_fiemap +_require_cp_reflink + +TESTDIR1=$TEST_DIR/test-$seq +rm -rf $TESTDIR1 +mkdir $TESTDIR1 + +_checksum_files() { + for F in original copy1 copy2 + do + md5sum $TESTDIR1/$F | _filter_test_dir + done +} + +rm -f $seqres.full + +echo "Create the original file and reflink to copy1, copy2" +$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 9000' $TESTDIR1/original >> $seqres.full 2>&1 +cp --reflink $TESTDIR1/original $TESTDIR1/copy1 +cp --reflink $TESTDIR1/copy1 $TESTDIR1/copy2 +_verify_reflink $TESTDIR1/original $TESTDIR1/copy1 +_verify_reflink $TESTDIR1/original $TESTDIR1/copy2 +echo "Original md5sums:" +_checksum_files + +echo "Overwrite original file with new data" +$XFS_IO_PROG -c 'pwrite -S 0x62 0 9000' $TESTDIR1/original >> $seqres.full 2>&1 +echo "md5sums after overwriting original:" +_checksum_files + +echo "Overwrite copy1 with different new data" +$XFS_IO_PROG -c 'pwrite -S 0x63 0 9000' $TESTDIR1/copy1 >> $seqres.full 2>&1 +echo "md5sums after overwriting copy1:" +_checksum_files + +# success, all done +status=0 +exit diff --git a/tests/btrfs/306.out b/tests/btrfs/306.out new file mode 100644 index 0000000..7bccf08 --- /dev/null +++ b/tests/btrfs/306.out @@ -0,0 +1,16 @@ +QA output created by 306 +Create the original file and reflink to copy1, copy2 +Original md5sums: +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/original +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/copy1 +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/copy2 +Overwrite original file with new data +md5sums after overwriting original: +4a847a25439532bf48b68c9e9536ed5b TEST_DIR/test-306/original +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/copy1 +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/copy2 +Overwrite copy1 with different new data +md5sums after overwriting copy1: +4a847a25439532bf48b68c9e9536ed5b TEST_DIR/test-306/original +e271cd47d9f62ebc96cb4e67ae4d16db TEST_DIR/test-306/copy1 +42d69d1a6d333a7ebdf64792a555e392 TEST_DIR/test-306/copy2 diff --git a/tests/btrfs/group b/tests/btrfs/group index bc6c256..f24628c 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -9,3 +9,4 @@ 276 auto rw metadata 284 auto +306 auto quick reflink 307 auto quick