From patchwork Mon Mar 6 08:58:55 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 9605263 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 CF5106046A for ; Mon, 6 Mar 2017 09:11:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EFD4728249 for ; Mon, 6 Mar 2017 09:11:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E474E28307; Mon, 6 Mar 2017 09:11:12 +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 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 399B328304 for ; Mon, 6 Mar 2017 09:11:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752712AbdCFJJU (ORCPT ); Mon, 6 Mar 2017 04:09:20 -0500 Received: from cn.fujitsu.com ([59.151.112.132]:56997 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752703AbdCFJJR (ORCPT ); Mon, 6 Mar 2017 04:09:17 -0500 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="16239801" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 06 Mar 2017 16:59:17 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id E9DC147D8B88; Mon, 6 Mar 2017 16:59:15 +0800 (CST) Received: from localhost.localdomain (10.167.226.34) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.319.2; Mon, 6 Mar 2017 16:59:17 +0800 From: Qu Wenruo To: CC: Subject: [PATCH v2 6/6] btrfs: Enhance missing device kernel message Date: Mon, 6 Mar 2017 16:58:55 +0800 Message-ID: <20170306085855.11403-7-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170306085855.11403-1-quwenruo@cn.fujitsu.com> References: <20170306085855.11403-1-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.34] X-yoursite-MailScanner-ID: E9DC147D8B88.A338B X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: quwenruo@cn.fujitsu.com 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 For missing device, btrfs will just refuse to mount with almost meaningless kernel message like: BTRFS info (device vdb6): disk space caching is enabled BTRFS info (device vdb6): has skinny extents BTRFS error (device vdb6): failed to read the system array: -5 BTRFS error (device vdb6): open_ctree failed This patch will add extra device missing output, making the result to: BTRFS info (device vdb6): disk space caching is enabled BTRFS info (device vdb6): has skinny extents BTRFS warning (device vdb6): devid 2 uuid 80470722-cad2-4b90-b7c3-fee294552f1b is missing BTRFS error (device vdb6): failed to read the system array: -5 BTRFS error (device vdb6): open_ctree failed Signed-off-by: Qu Wenruo Reviewed-by: Anand Jain --- fs/btrfs/volumes.c | 25 ++++++++++++++++++------- fs/btrfs/volumes.h | 2 ++ 2 files changed, 20 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 72c78f096755..b33e96495934 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6442,6 +6442,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, if (!map->stripes[i].dev && !btrfs_test_opt(fs_info, DEGRADED)) { free_extent_map(em); + btrfs_report_missing_device(fs_info, devid, uuid); return -EIO; } if (!map->stripes[i].dev) { @@ -6452,8 +6453,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, free_extent_map(em); return -EIO; } - btrfs_warn(fs_info, "devid %llu uuid %pU is missing", - devid, uuid); + btrfs_report_missing_device(fs_info, devid, uuid); } map->stripes[i].dev->in_fs_metadata = 1; } @@ -6570,17 +6570,21 @@ static int read_one_dev(struct btrfs_fs_info *fs_info, device = btrfs_find_device(fs_info, devid, dev_uuid, fs_uuid); if (!device) { - if (!btrfs_test_opt(fs_info, DEGRADED)) + if (!btrfs_test_opt(fs_info, DEGRADED)) { + btrfs_report_missing_device(fs_info, devid, dev_uuid); return -EIO; + } device = add_missing_dev(fs_devices, devid, dev_uuid); if (!device) return -ENOMEM; - btrfs_warn(fs_info, "devid %llu uuid %pU missing", - devid, dev_uuid); + btrfs_report_missing_device(fs_info, devid, dev_uuid); } else { - if (!device->bdev && !btrfs_test_opt(fs_info, DEGRADED)) - return -EIO; + if (!device->bdev) { + btrfs_report_missing_device(fs_info, devid, dev_uuid); + if (!btrfs_test_opt(fs_info, DEGRADED)) + return -EIO; + } if(!device->bdev && !device->missing) { /* @@ -6591,6 +6595,7 @@ static int read_one_dev(struct btrfs_fs_info *fs_info, */ device->fs_devices->missing_devices++; device->missing = 1; + btrfs_report_missing_device(fs_info, devid, dev_uuid); } /* Move the device to its own fs_devices */ @@ -6748,6 +6753,12 @@ int btrfs_read_sys_array(struct btrfs_fs_info *fs_info) return -EIO; } +void btrfs_report_missing_device(struct btrfs_fs_info *fs_info, u64 devid, + u8 *uuid) +{ + btrfs_warn_rl(fs_info, "devid %llu uuid %pU is missing", devid, uuid); +} + /* * Check if all chunks in the fs is OK for read-write degraded mount * diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 112fccacdabc..4f981b75958d 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -543,4 +543,6 @@ void btrfs_set_fs_info_ptr(struct btrfs_fs_info *fs_info); void btrfs_reset_fs_info_ptr(struct btrfs_fs_info *fs_info); bool btrfs_check_rw_degradable(struct btrfs_fs_info *fs_info); +void btrfs_report_missing_device(struct btrfs_fs_info *fs_info, u64 devid, + u8 *uuid); #endif