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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8D20DC433E0 for ; Tue, 26 May 2020 08:25:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A9E32071A for ; Tue, 26 May 2020 08:25:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="onKGObla" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728400AbgEZIZ7 (ORCPT ); Tue, 26 May 2020 04:25:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728248AbgEZIZ6 (ORCPT ); Tue, 26 May 2020 04:25:58 -0400 Received: from mail-il1-x142.google.com (mail-il1-x142.google.com [IPv6:2607:f8b0:4864:20::142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C41F6C03E97E for ; Tue, 26 May 2020 01:25:58 -0700 (PDT) Received: by mail-il1-x142.google.com with SMTP id b71so19486139ilg.8 for ; Tue, 26 May 2020 01:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=CCoQRlTB5BX4UETF4wINpGrqmx2niEKXBsxk7b5UPpU=; b=onKGOblaZDWH92975QhuSdU2M2wO+CkJVHGIjLR5RGVI1W9vk8r/OmEW4fEPeI6OOl wj+oskWtheM0scBexL6bzk1Jz6TOptb5IolG+8kjioZHT/845xh5/J6oaESeHIyZyaLB wJBcFKPH3yyCldm/YzI9t22QTGCUW14Llyz4yeGTgUeN95feZ1j6awxOBvGa4xRoitaW M+LFQ5R/+BDD9xSEnFIqCNg4qoLmilFAc3loEhRPDcf35grZgiJER+7qW78Ww+68/aih ZpigAXEHy3FzeZcIRZveUpQtPZ1CllrtTo5wE2iGr9Xag0PYcbsODmUqSfuqwA4dMAUl LhKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=CCoQRlTB5BX4UETF4wINpGrqmx2niEKXBsxk7b5UPpU=; b=iUyg0zm9l92PnGF1+v/A5b3WZz6oyB3okKfwif0GclDUAhOwX2IO8/aoZNvzuQEvlG aAVmYtuHcEvnBy7isfSVYAHTJ0jxUhs6kwlKFIVIvRX76pUp5/9NLUgsr6E3X5LQqgHP 7Q0Y/GqOaeDuosGnM1umtJl9VCVcPUkmI2W/KFmoS/08K4H35QghbOzzAlXhynI/vA3c bG2Stpeo4/ChZZ/kl8lT/M+iJneBGs5idsnayt+vMSx9B14nsNFDx9yzxqj5US6ZFw5n 2tTwYUTXraDt6BmPsVpWKEf86eaO12JA6CJJW7esW3eKKouMgSOpBweIcMbkhiVXG7Ob UrAA== X-Gm-Message-State: AOAM533aN2duEutWcL6KzJ6v1Do2ASIxDLRcAtgnXkMIaU1quhfDCaeC VLrWoTZia6Lchop+d1XEx3BAUAtAPEIFl3nJdg64BhnK X-Google-Smtp-Source: ABdhPJyYS62oj1TULUv3Hx1B3YSK/4f+QbM+oDCy7f3m3G66aOtIbupyq1VRGxqB2A5vdxSc4LQUoRW9N2NlGPiny3Y= X-Received: by 2002:a92:4015:: with SMTP id n21mr82556ila.137.1590481558148; Tue, 26 May 2020 01:25:58 -0700 (PDT) MIME-Version: 1.0 References: <20200506095307.23742-1-cgxu519@mykernel.net> <4bc73729-5d85-36b7-0768-ae5952ae05e9@mykernel.net> <6bce615e-b8ef-e63f-3829-e2b785a02f5d@mykernel.net> In-Reply-To: <6bce615e-b8ef-e63f-3829-e2b785a02f5d@mykernel.net> From: Amir Goldstein Date: Tue, 26 May 2020 11:25:47 +0300 Message-ID: Subject: Re: [PATCH v12] ovl: improve syncfs efficiency To: cgxu Cc: Jan Kara , Miklos Szeredi , overlayfs , Sargun Dhillon Content-Type: text/plain; charset="UTF-8" Sender: linux-unionfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-unionfs@vger.kernel.org > >> In high density container environment, especially for temporary jobs, > >> this is quite unwilling behavior. Should we provide an option to > >> mitigate this effect for containers which don't care about dirty data? > >> > > > > This is not the first time this sort of suggestion has been made: > > https://lore.kernel.org/linux-unionfs/4bc73729-5d85-36b7-0768-ae5952ae05e9@mykernel.net/T/#md5fc5d51852016da7e042f5d9e5ef7a6d21ea822 > > The link above seems just my mail thread in mail list. > Heh sorry. Wrong link. Here it is: https://lore.kernel.org/linux-unionfs/CAMp4zn9NsrdByVzWbThBd7Y0DsufJnqp=LdbDscbtyZx82E0Ug@mail.gmail.com/ Sargun, do you have anything to contribute to this discussion from your experience? Are you using Ephemeral containers? Thanks, Amir.