From patchwork Wed Mar 25 18:58:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Mahoney X-Patchwork-Id: 6094231 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 06AB99F318 for ; Wed, 25 Mar 2015 18:58:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 04E1F2034C for ; Wed, 25 Mar 2015 18:58:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DECF72034B for ; Wed, 25 Mar 2015 18:58:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752515AbbCYS6W (ORCPT ); Wed, 25 Mar 2015 14:58:22 -0400 Received: from cantor2.suse.de ([195.135.220.15]:49744 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752502AbbCYS6V (ORCPT ); Wed, 25 Mar 2015 14:58:21 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 604E3ADDB; Wed, 25 Mar 2015 18:58:19 +0000 (UTC) Message-ID: <55130547.6090907@suse.com> Date: Wed, 25 Mar 2015 14:58:15 -0400 From: Jeff Mahoney User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: fstests@vger.kernel.org, linux-btrfs Subject: xfstests: btrfs: test for orphan item cleanup Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This test tests three conditions where orphan items need to be cleaned up: 1) Default subvolume is fs tree root (mkfs default) 2) Default subvolume has been set explicitly to another subvolume (set-default) 3) Looking up a subvolume during a traversal In the kernel, these three cases use separate mechanisms to look up the subvolumes. There was a bug in the kernel where case #2 wasn't getting handled and so orphan items would never be cleaned up if the default subvolume was explicitly set. This issue was fixed with the upstream commit: btrfs: cleanup orphans while looking up default subvolume Signed-off-by: Jeff Mahoney Reviewed-by: Filipe Manana Tested-by: Filipe Manana --- tests/btrfs/083 | 155 ++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/083.out | 5 ++ tests/btrfs/group | 1 + 3 files changed, 161 insertions(+) create mode 100755 tests/btrfs/083 create mode 100644 tests/btrfs/083.out diff --git a/tests/btrfs/083 b/tests/btrfs/083 new file mode 100755 index 0000000..12416d9 --- /dev/null +++ b/tests/btrfs/083 @@ -0,0 +1,155 @@ +#!/bin/bash +# FS QA Test No. btrfs/083 +# +# Tests to ensure that orphan items are properly created and cleaned up +# on next mount. +# +# There are three cases where orphan items may be cleaned up: +# 1) Default subvolume is fs tree root (mkfs default) +# 2) Default subvolume is explicitly created subvolume +# (i.e. btrfs subvol set-default) +# 3) Non-default subvolume lookup +# +#----------------------------------------------------------------------- +# Copyright (c) 2015 SUSE. 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! + +_cleanup() +{ + _cleanup_flakey + rm -f $tmp.* +} + +trap "_cleanup ; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/dmflakey + +# real QA test starts here +_supported_fs btrfs +_supported_os Linux +_require_scratch +_require_dm_flakey +_need_to_be_root + +rm -f $seqres.full + +has_orphan_item() { + INO=$1 + if btrfs-debug-tree $SCRATCH_DEV | \ + grep -q "key (ORPHAN ORPHAN_ITEM $INO)"; then + return 0 + fi + return 1 +} + +test_orphan() { + PRECMD=$1 + SUB=0 + + _scratch_mkfs >> $seqres.full 2>&1 + _init_flakey + + _mount_flakey + + $PRECMD + + TESTPATH=$SCRATCH_MNT/testdir/testfile + DIR=$(dirname $TESTPATH) + + [ -d "$DIR" ] || mkdir -p $DIR + + SIZE=$(( 1024 * 1024 )) + run_check dd if=/dev/zero of=$TESTPATH bs=$SIZE count=1 + + INO=$(stat -c %i $TESTPATH) + + # Orphan item won't be created if the file doesn't make it to disk + sync + + # Open and delete the file + exec 27<$TESTPATH + rm -f $TESTPATH + + # Ensure the unlink (and orphan item creation) hits the disk + sync + + # Turn off writes before closing so the orphan item will be left behind + _load_flakey_table $FLAKEY_DROP_WRITES + + # Close the file so we can umount + exec 27>&- + + # Orphan item should be on disk if operating correctly + _unmount_flakey + _load_flakey_table $FLAKEY_ALLOW_WRITES + if ! has_orphan_item $INO; then + echo "ERROR: No orphan item found after umount." + return + fi + _mount_flakey + + # If $DIR is a subvolume, this will cause a lookup and orphan cleanup + (cd $DIR; true) + + # Orphan item will be cleaned up during mount but won't be on + # disk until there's a sync. + sync + + _unmount_flakey + if has_orphan_item $INO; then + echo "ERROR: Orphan item found after successful mount/sync." + fi + _cleanup_flakey +} + +new_subvolume() { + _run_btrfs_util_prog subvol create $SCRATCH_MNT/testdir +} + +new_default() { + new_subvolume + SUB=$(btrfs subvol list $SCRATCH_MNT |awk '{print $2}') + _run_btrfs_util_prog subvol set-default $SUB $SCRATCH_MNT + + _unmount_flakey + _mount_flakey +} + +echo "Testing with fs root as default subvolume" +test_orphan true + +echo "Testing with explicit default subvolume" +test_orphan new_default + +echo "Testing with orphan on non-default subvolume" +test_orphan new_subvolume + +echo "Silence is golden" +status=0 +exit diff --git a/tests/btrfs/083.out b/tests/btrfs/083.out new file mode 100644 index 0000000..c3c99f1 --- /dev/null +++ b/tests/btrfs/083.out @@ -0,0 +1,5 @@ +QA output created by 083 +Testing with fs root as default subvolume +Testing with explicit default subvolume +Testing with orphan on non-default subvolume +Silence is golden diff --git a/tests/btrfs/group b/tests/btrfs/group index fd2fa76..c48fc0c 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -85,3 +85,4 @@ 080 auto snapshot 081 auto quick clone 082 auto quick remount +083 auto quick metadata subvol