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=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 BEB09C4363D for ; Fri, 25 Sep 2020 07:56:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6AEEF221E5 for ; Fri, 25 Sep 2020 07:56:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="n00vTouN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727535AbgIYH43 (ORCPT ); Fri, 25 Sep 2020 03:56:29 -0400 Received: from mx2.suse.de ([195.135.220.15]:60790 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727164AbgIYH43 (ORCPT ); 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 25.09.20 г. 10:33 ч., Anand Jain wrote: > > > > Even this is wrong. Generally seed's devid is 1, and > btrfs_verify_dev_extents() starts verifying from the dev object id = 1. > So typically, the seed will be the first device that gets verified. As > btrfs_read_chunk_tree() is called before btrfs_verify_dev_extents() so > the btrfs_device is properly initialized before the verify check. > > 2817 int __cold open_ctree > > 3073         ret = btrfs_read_chunk_tree(fs_info);  <-- seed init > :: > 3106         ret = btrfs_verify_dev_extents(fs_info); Fair, I missed that btrfs_find_device can also return a device from fs_info->seed_list because it searches it as well. So this indeed means all devices are initialized by fill_device_from_item so : Reviewed-by: Nikolay Borisov Still I think this mechanism ought to be explicitly described in the changelog i.e mentioning that btrfs_find_device also returns seed devices. > > > Thanks, Anand > >> >> >> >