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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28C2FC77B7A for ; Thu, 20 Apr 2023 04:32:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233448AbjDTEcT (ORCPT ); Thu, 20 Apr 2023 00:32:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229812AbjDTEcR (ORCPT ); Thu, 20 Apr 2023 00:32:17 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0CFF42D5D; Wed, 19 Apr 2023 21:32:16 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 97A0863A98; Thu, 20 Apr 2023 04:32:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E41ACC433D2; Thu, 20 Apr 2023 04:32:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1681965135; bh=8R4HtSqQRUTLjicHkQSSY5ou4pZTTzXkvITRZgFV+E8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=oGlKghtiWpyeSX4KBX/U2YWmljw6ggohuKe1v9sEgvAwJQcAxkxZ+jYm1mwkBe0d8 EAj8Jd8w7XE/6YQqbSpPlNlN6j5cWF24HQOT7QgoFAc+LwxdhrxVqG3jD4heisGLin qf2RqZ1oYpiAh6A7bXTK88jnpUomVU9RsxctxA0ckZxxwBE0kWvlCfEa8LoJFmedxo RyJ2fi3eAbQTF4juuLDu3QgD7DjCEWWc+Ld24qreO3Cof3Xe7rIaM/cMD+Q5pDXWPQ 7UpZuUVK76dRPGwwRdwmfNxae+NKDXGb2VDtC2JhVOgt1uQkCuYPc3c2OH/KbzsOqw uDJ9jTwmpcpMA== Date: Wed, 19 Apr 2023 21:32:14 -0700 From: "Darrick J. Wong" To: Chandan Babu R Cc: Amir Goldstein , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, xfs , linux-ext4 , linux-btrfs , "Martin K. Petersen" Subject: Re: [Lsf-pc] [LSF TOPIC] online repair of filesystems: what next? Message-ID: <20230420043214.GF360881@frogsfrogsfrogs> References: <20230418044641.GD360881@frogsfrogsfrogs> <20230419021146.GE360889@frogsfrogsfrogs> <875y9st2lk.fsf@debian-BULLSEYE-live-builder-AMD64> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <875y9st2lk.fsf@debian-BULLSEYE-live-builder-AMD64> Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Wed, Apr 19, 2023 at 04:28:48PM +0530, Chandan Babu R wrote: > On Wed, Apr 19, 2023 at 07:06:58 AM +0300, Amir Goldstein wrote: > > On Wed, Apr 19, 2023 at 5:11 AM Darrick J. Wong wrote: > >> > >> On Tue, Apr 18, 2023 at 10:46:32AM +0300, Amir Goldstein wrote: > >> > On Tue, Apr 18, 2023 at 7:46 AM Darrick J. Wong wrote: > >> > > > >> > > On Sat, Apr 15, 2023 at 03:18:05PM +0300, Amir Goldstein wrote: > >> > > > On Tue, Feb 28, 2023 at 10:49 PM Darrick J. Wong wrote: > >> > ... > >> > > > Darrick, > >> > > > > >> > > > Quick question. > >> > > > You indicated that you would like to discuss the topics: > >> > > > Atomic file contents exchange > >> > > > Atomic directio writes > >> > > > >> > > This one ^^^^^^^^ topic should still get its own session, ideally with > >> > > Martin Petersen and John Garry running it. A few cloud vendors' > >> > > software defined storage stacks can support multi-lba atomic writes, and > >> > > some database software could take advantage of that to reduce nested WAL > >> > > overhead. > >> > > > >> > > >> > CC Martin. > >> > If you want to lead this session, please schedule it. > >> > > >> > > > Are those intended to be in a separate session from online fsck? > >> > > > Both in the same session? > >> > > > > >> > > > I know you posted patches for FIEXCHANGE_RANGE [1], > >> > > > but they were hiding inside a huge DELUGE and people > >> > > > were on New Years holidays, so nobody commented. > >> > > > >> > > After 3 years of sparse review comments, I decided to withdraw > >> > > FIEXCHANGE_RANGE from general consideration after realizing that very > >> > > few filesystems actually have the infrastructure to support atomic file > >> > > contents exchange, hence there's little to be gained from undertaking > >> > > fsdevel bikeshedding. > >> > > > >> > > > Perhaps you should consider posting an uptodate > >> > > > topic suggestion to let people have an opportunity to > >> > > > start a discussion before LSFMM. > >> > > > >> > > TBH, most of my fs complaints these days are managerial problems (Are we > >> > > spending too much time on LTS? How on earth do we prioritize projects > >> > > with all these drive by bots?? Why can't we support large engineering > >> > > efforts better???) than technical. > >> > > >> > I penciled one session for "FS stable backporting (and other LTS woes)". > >> > I made it a cross FS/IO session so we can have this session in the big room > >> > and you are welcome to pull this discussion to any direction you want. > >> > >> Ok, thank you. Hopefully we can get all the folks who do backports into > >> this one. That might be a big ask for Chandan, depending on when you > >> schedule it. > >> > >> (Unless it's schedule for 7pm :P) > >> > > > > Oh thanks for reminding me! > > I moved it to Wed 9am, so it is more convenient for Chandan. > > This maps to 9:30 AM for me. Thanks for selecting a time which is convenient > for me. Er... doesn't 9:30am for Chandan map to 9:00*pm* the previous evening for those of us in Vancouver? (Or I guess 9:30pm for Chandan if we actually are having a morning session?) Chandan: I'll ask Shirley to cancel our staff meeting so you don't have a crazy(er) meeting schedule during LSF. --D > -- > chandan