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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 56E0DC4363C for ; Mon, 21 Sep 2020 20:26:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F7792071A for ; Mon, 21 Sep 2020 20:26:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726452AbgIUU0T (ORCPT ); Mon, 21 Sep 2020 16:26:19 -0400 Received: from mx2.suse.de ([195.135.220.15]:38270 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726427AbgIUU0T (ORCPT ); Mon, 21 Sep 2020 16:26:19 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 40938ACD8; Mon, 21 Sep 2020 20:26:54 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id F1D3CDA6E0; Mon, 21 Sep 2020 22:25:02 +0200 (CEST) Date: Mon, 21 Sep 2020 22:25:02 +0200 From: David Sterba To: Anand Jain Cc: Josef Bacik , linux-btrfs@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH 1/2] btrfs: init device stats for seed devices Message-ID: <20200921202502.GT6756@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Anand Jain , Josef Bacik , linux-btrfs@vger.kernel.org, kernel-team@fb.com References: <8217721c-0bd9-67af-1900-9594689c127b@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8217721c-0bd9-67af-1900-9594689c127b@oracle.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Sat, Sep 19, 2020 at 05:47:18AM +0800, Anand Jain wrote: > > Seed read errors should remain persistent. How? The seed device is read-only, we can't record the stats and recording them on the sprout device has unclear meaning. > A similar update to btrfs_run_dev_stats() is required?