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=-9.1 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_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT 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 8231EC282CA for ; Wed, 13 Feb 2019 09:53:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 51F3D222CD for ; Wed, 13 Feb 2019 09:53:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="ctttriTr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387816AbfBMJxt (ORCPT ); Wed, 13 Feb 2019 04:53:49 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:53348 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387886AbfBMJxs (ORCPT ); Wed, 13 Feb 2019 04:53:48 -0500 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 x1D9mgcv163804; Wed, 13 Feb 2019 09:53:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=Ad+zZ6/ZPUMB/Kv9Vg5krh7HY7WfIeBOyxxzOXDmo7w=; b=ctttriTrfRyyTI0foAO+2oPHy9NIG15gjAcHNkL9jzu/f49ylX24i2f7alNXBNBUz8bm yg4eNM8+Gl6DJq1VuaZhIJNkctIp5g7WbS9N4F7/mR7eS79R4oy6nExMJC2Brdj5SmA3 H4GahO6Kt8lcGWiq7ug5VOF7h4G7fxscQyL+G7iLWrmDg6XXWybirHN7GbtGp/Reh7TB 2AZuYOlq03DJIz4BJEzGs/yoGS0E7VJiALdnHYczh+wtZ2AfU8gTBUBErKFh8jxoLaJp uq64g6tGz/3sWhwZ3nP5x9lv5L6XSfyu1PpvrXtbJpC9SrTtUvKIYuprserIXqPUQZ/n 1A== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2120.oracle.com with ESMTP id 2qhree11sx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 13 Feb 2019 09:53:42 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x1D9re4n021320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 13 Feb 2019 09:53:41 GMT Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x1D9rea9000731; Wed, 13 Feb 2019 09:53:40 GMT Received: from localhost.localdomain (/116.239.187.160) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 13 Feb 2019 09:53:40 +0000 From: Bob Liu To: linux-block@vger.kernel.org Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, martin.petersen@oracle.com, shirley.ma@oracle.com, allison.henderson@oracle.com, david@fromorbit.com, darrick.wong@oracle.com, hch@infradead.org, adilger@dilger.ca Subject: [RFC PATCH v2 7/9] xfs: Add device retry Date: Wed, 13 Feb 2019 17:50:42 +0800 Message-Id: <20190213095044.29628-8-bob.liu@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190213095044.29628-1-bob.liu@oracle.com> References: <20190213095044.29628-1-bob.liu@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9165 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 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=8.0.1-1810050000 definitions=main-1902130072 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Allison Henderson Check to see if the _xfs_buf_read fails. If so loop over the available mirrors and retry the read Signed-off-by: Allison Henderson --- fs/xfs/xfs_buf.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 6098195ecaf4..2c250221cb78 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "xfs_format.h" #include "xfs_log_format.h" @@ -824,6 +825,9 @@ xfs_buf_read_map( const struct xfs_buf_ops *ops) { struct xfs_buf *bp; + struct request_queue *q; + unsigned long i; + int retries = 0; flags |= XBF_READ; @@ -836,7 +840,27 @@ xfs_buf_read_map( if (!(bp->b_flags & XBF_DONE)) { XFS_STATS_INC(target->bt_mount, xb_get_read); bp->b_ops = ops; - _xfs_buf_read(bp, flags); + q = bdev_get_queue(bp->b_target->bt_bdev); + + if (bp->b_alt_retry) + retries = blk_queue_get_mirrors(q); + + for (i = 0; i <= retries; i++) { + bp->b_error = 0; + _xfs_buf_read(bp, flags); + + switch (bp->b_error) { + case -EIO: + case -EFSCORRUPTED: + case -EFSBADCRC: + /* loop again */ + continue; + default: + goto retry_done; + } + + } +retry_done: return bp; } -- 2.17.1