From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62505C49ED7 for ; Fri, 20 Sep 2019 15:34:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3777A20882 for ; Fri, 20 Sep 2019 15:34:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="Y/tGUO2v" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404002AbfITPez (ORCPT ); Fri, 20 Sep 2019 11:34:55 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:35994 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404022AbfITPev (ORCPT ); Fri, 20 Sep 2019 11:34:51 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x8KFT16g119320; Fri, 20 Sep 2019 15:34:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=corp-2019-08-05; bh=OrAKn0vbTufQuIDvyfe1IyfLykPmVok3HNUq2L7w7iY=; b=Y/tGUO2vRFDfaNG3ixBqQ5n80hXEX/DAFznbob15hwDf742OR8UyoCyxIjbtAG6yF1d8 a3r1ADp3fenN3HgWe+7Hqo40ANst74URait8dvkOpamufNSvOyWf6wKy8RrJhWdjPu4t 3JEeEWGM3/biCkpUr6X0/uQfDt2uN8aR3BQXXcZA5p34PppNHFmUkHLGwALOH6y78gX5 EAqxkxBQBohewvL3OWUo4qy7iCAQTGLdmoDdKj+saDFquJiKqpwNdoEBwcRYOJMRRXU4 ugxjphna+iuyTqDlUGxOMS4zxQXaIXEuSHTJ7DVP80/cyqoAsrY001ZXdvtIG6LqQysb jA== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2120.oracle.com with ESMTP id 2v3vb53a1t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 20 Sep 2019 15:34:45 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x8KFSKgt187776; Fri, 20 Sep 2019 15:34:44 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3030.oracle.com with ESMTP id 2v51as8mqp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 20 Sep 2019 15:34:44 +0000 Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x8KFYhdV028970; Fri, 20 Sep 2019 15:34:43 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 20 Sep 2019 08:34:43 -0700 Date: Fri, 20 Sep 2019 08:34:43 -0700 From: "Darrick J. Wong" To: Zorro Lang Cc: fstests@vger.kernel.org, linux-xfs@vger.kernel.org Subject: Re: [PATCH v2] common/xfs: wipe the XFS superblock of each AGs Message-ID: <20190920153443.GR2229799@magnolia> References: <20190920062327.14747-1-zlang@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190920062327.14747-1-zlang@redhat.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9385 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909200143 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9385 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909200143 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Fri, Sep 20, 2019 at 02:23:27PM +0800, Zorro Lang wrote: > xfs/030 always fails after d0e484ac699f ("check: wipe scratch devices > between tests") get merged. > > Due to xfs/030 does a sized(100m) mkfs. Before we merge above commit, > mkfs.xfs detects an old primary superblock, it will write zeroes to > all superblocks before formatting the new filesystem. But this won't > be done if we wipe the first superblock(by merging above commit). > > That means if we make a (smaller) sized xfs after wipefs, those *old* > superblocks which created by last time mkfs.xfs will be left on disk. > Then when we do xfs_repair, if xfs_repair can't find the first SB, it > will go to find those *old* SB at first. When it finds them, > everyting goes wrong. > > So I try to get XFS AG geometry(by default) and then try to erase all > superblocks. Thanks Darrick J. Wong helped to analyze this issue. > > Reported-by: Yang Xu > Signed-off-by: Zorro Lang > --- > > Hi, > > V2 did below changes: > 1) Use xfs_db to detect the real xfs geometry > 2) Do a $FSTYP specified wipe before trying to wipefs all scratch devices > > Thanks, > Zorro > > common/rc | 8 ++++++++ > common/xfs | 20 ++++++++++++++++++++ > 2 files changed, 28 insertions(+) > > diff --git a/common/rc b/common/rc > index 66c7fd4d..56329747 100644 > --- a/common/rc > +++ b/common/rc > @@ -4045,6 +4045,14 @@ _try_wipe_scratch_devs() > { > test -x "$WIPEFS_PROG" || return 0 > > + # Do specified filesystem wipe at first > + case "$FSTYP" in > + "xfs") > + _try_wipe_scratch_xfs > + ;; > + esac > + > + # Then do wipefs on all scratch devices > for dev in $SCRATCH_DEV_POOL $SCRATCH_DEV $SCRATCH_LOGDEV $SCRATCH_RTDEV; do > test -b $dev && $WIPEFS_PROG -a $dev > done > diff --git a/common/xfs b/common/xfs > index 1bce3c18..082a1744 100644 > --- a/common/xfs > +++ b/common/xfs > @@ -884,3 +884,23 @@ _xfs_mount_agcount() > { > $XFS_INFO_PROG "$1" | grep agcount= | sed -e 's/^.*agcount=\([0-9]*\),.*$/\1/g' > } > + > +# Wipe the superblock of each XFS AGs > +_try_wipe_scratch_xfs() > +{ > + local num='^[0-9]+$' > + local agcount > + local agsize > + local dbsize > + > + agcount=`_scratch_xfs_get_sb_field agcount 2>/dev/null` > + agsize=`_scratch_xfs_get_sb_field agblocks 2>/dev/null` > + dbsize=`_scratch_xfs_get_sb_field blocksize 2>/dev/null` > + > + if [[ $agcount =~ $num && $agsize =~ $num && $dbsize =~ $num ]];then > + for ((i = 0; i < agcount; i++)); do > + $XFS_IO_PROG -c "pwrite $((i * dbsize * agsize)) $dbsize" \ > + $SCRATCH_DEV >/dev/null; > + done > + fi What happened to the loop that simulates a _scratch_mkfs_xfs run (to get the AG geometry) and then zaps that too? You need both zeroing loops to make sure xfs/030 doesn't trip over old superblocks, right? --D > +} > -- > 2.20.1 >