From patchwork Wed Nov 15 23:47:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liu Bo X-Patchwork-Id: 10060541 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F0C896056E for ; Thu, 16 Nov 2017 00:50:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DB67A29E08 for ; Thu, 16 Nov 2017 00:50:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D04722A40A; Thu, 16 Nov 2017 00:50:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7618129E12 for ; Thu, 16 Nov 2017 00:50:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756490AbdKPAuS (ORCPT ); Wed, 15 Nov 2017 19:50:18 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:32694 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753775AbdKPAuQ (ORCPT ); Wed, 15 Nov 2017 19:50:16 -0500 Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id vAG0oClO025892 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Nov 2017 00:50:13 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id vAG0oCA0022421 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Nov 2017 00:50:12 GMT Received: from abhmp0016.oracle.com (abhmp0016.oracle.com [141.146.116.22]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id vAG0oCxd000971; Thu, 16 Nov 2017 00:50:12 GMT Received: from dhcp-10-211-47-181.usdhcp.oraclecorp.com.com (/10.211.47.181) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 15 Nov 2017 16:50:12 -0800 From: Liu Bo To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, Nikolay Borisov Subject: [PATCH v2] fstests: btrfs/143: make test case more reliable Date: Wed, 15 Nov 2017 16:47:59 -0700 Message-Id: <20171115234759.19168-1-bo.li.liu@oracle.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20171023205733.14896-1-bo.li.liu@oracle.com> References: <20171023205733.14896-1-bo.li.liu@oracle.com> X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This changes to use '_scratch_cycle_mount' to drop all caches btrfs could have in order to avoid an issue that drop_caches somehow doesn't work on Nikolay's box. Also use bash -c to run 'read' only when %pid is odd so that we can read the faulty disk. Reported-by: Nikolay Borisov Signed-off-by: Liu Bo Tested-by: Nikolay Borisov --- v2: Change 'fadvise -d' to _scratch_cycle_mount. To Nikolay, I didn't add your tested-by, but could you please verify if this also works on your test box? tests/btrfs/143 | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/tests/btrfs/143 b/tests/btrfs/143 index da7bfd8..3875b6c 100755 --- a/tests/btrfs/143 +++ b/tests/btrfs/143 @@ -127,16 +127,16 @@ echo "step 3......repair the bad copy" >>$seqres.full # since raid1 consists of two copies, and the bad copy was put on stripe #1 # while the good copy lies on stripe #0, the bad copy only gets access when the # reader's pid % 2 == 1 is true -while true; do - # start_fail only fails the following buffered read so the repair is - # supposed to work. - echo 3 > /proc/sys/vm/drop_caches - start_fail - $XFS_IO_PROG -c "pread 0 4K" "$SCRATCH_MNT/foobar" > /dev/null & - pid=$! - wait - stop_fail - [ $((pid % 2)) == 1 ] && break +while [[ -z ${result} ]]; do + # invalidate the page cache. + _scratch_cycle_mount + + start_fail + result=$(bash -c " + if [[ \$((\$\$ % 2)) -eq 1 ]]; then + exec $XFS_IO_PROG -c \"pread 0 4K\" \"$SCRATCH_MNT/foobar\" + fi"); + stop_fail done _scratch_unmount