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 ADDE4C4361B for ; Wed, 16 Dec 2020 17:26:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C41523382 for ; Wed, 16 Dec 2020 17:26:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726955AbgLPR0K (ORCPT ); Wed, 16 Dec 2020 12:26:10 -0500 Received: from mx2.suse.de ([195.135.220.15]:55272 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726837AbgLPR0K (ORCPT ); Wed, 16 Dec 2020 12:26:10 -0500 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 9B1BDAE05; Wed, 16 Dec 2020 17:25:29 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 1B4C4DA6E1; Wed, 16 Dec 2020 18:23:50 +0100 (CET) Date: Wed, 16 Dec 2020 18:23:50 +0100 From: David Sterba To: Sidong Yang Cc: dsterba@suse.cz, linux-btrfs@vger.kernel.org Subject: Re: [PATCH v3 2/2] btrfs-progs: device stats: add json output format Message-ID: <20201216172349.GJ6430@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Sidong Yang , linux-btrfs@vger.kernel.org References: <20201211164812.459012-1-realwakka@gmail.com> <20201211164812.459012-2-realwakka@gmail.com> <20201211173025.GO6430@twin.jikos.cz> <20201211174629.GQ6430@twin.jikos.cz> <20201211180911.GB456927@realwakka> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201211180911.GB456927@realwakka> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Fri, Dec 11, 2020 at 06:09:11PM +0000, Sidong Yang wrote: > On Fri, Dec 11, 2020 at 06:46:29PM +0100, David Sterba wrote: > > On Fri, Dec 11, 2020 at 06:30:25PM +0100, David Sterba wrote: > > > On Fri, Dec 11, 2020 at 04:48:12PM +0000, Sidong Yang wrote: > > > > Example json format: > > > > > > > > { > > > > "__header": { > > > > "version": "1" > > > > }, > > > > "device-stats": [ > > > > { > > > > "device": "/dev/vdb", > > > > "devid": "1", > > > > "write_io_errs": "0", > > > > "read_io_errs": "0", > > > > "flush_io_errs": "0", > > > > "corruption_errs": "0", > > > > "generation_errs": "0" > > > > } > > > > ], > > > ^ > > > > > > I've verified that the comma is really there, it's not a valid json so > > > there's a bug in the formatter. To verify that the output is valid you > > > can use eg. 'jq', simply pipe the output of the commadn there. > > > > > > $ ./btrfs --format json dev stats /mnt | jq > > > parse error: Expected another key-value pair at line 16, column 1 > > > > I've pushed the updated plain text formatting to devel, so the only > > remaining bug is the above extra comma. > > I've tested devel branch. but there is no extra comma and I also tested > with jq you said. jq results no error. I think that It's just mistype in > message. That's strange because the formatter is buggy, eg. the simplest fmt_start()/fmt_end() leads to $ ./json-formatter-test { "__header": { "version": "1" }, } --- Which is of course invalid and jq confirms that.