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, URIBL_BLOCKED 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 53061C433E4 for ; Wed, 20 May 2020 23:26:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A29320874 for ; Wed, 20 May 2020 23:26:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XTWlThUu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728920AbgETX0g (ORCPT ); Wed, 20 May 2020 19:26:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728901AbgETX0b (ORCPT ); Wed, 20 May 2020 19:26:31 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB7DBC061A0E for ; Wed, 20 May 2020 16:26:30 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id i15so4823364wrx.10 for ; Wed, 20 May 2020 16:26:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=XQj0KuafA6rqxjjwjiH0uiqBGMfrXq9B8u6LHiRahoY=; b=XTWlThUuLFfp0AXcYsOWhbDBsC2jigF2wh06CcO/RNWQ1mPqzq2JV1awnIPu/gMSW4 ZrxLpbgThc+NwB7ZZFA2vb8Lu9lTkRtwuU3/+Cftj9C+RtG9gp3DN0kKEox6XYv6Cjgu mRbm/7RL8ZmrGytfmWZQx+awifYXzS2424XwH4I+oa835meQ5zuU8SVOABFNTx8YAiNR yFa0jtiEc3NHKQSyb8TTJZEg4Q3qY4en1q4LpkA8RTrlPLbz/mt0u0ZFyjl/fJiKg7Hb 9iD8qt6+LRy9jEEkYOFRw6fg+HokyHwarPaJvkY3wWg2P3kwapYc24/yyi++/YwgDt4X qvcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=XQj0KuafA6rqxjjwjiH0uiqBGMfrXq9B8u6LHiRahoY=; b=V13D6Ku369BhyFcnQ4qS244pyYS8364eT4Ce8Q+9tBnyMowpz3kb4+8IzY4ZHcs5bR D/uisKDZuraVcDoDqWNrDraQJQLUITYNr66SCTY6uLKnLB5TNfDi/3XAEsB8Njj//4cy S5tXCUzPRSCVNJC7cxLbujIjIZXD6jhkCNvquT3l7+tdasc41t1m0h/tO5p7r5zCa9wV /ahXNZPg0Kc3I+2aDeGBRkcglWppGjXNdUM1fKHYe3e+CRSX+85c3QC0FOT97249rY5l DuB4vItklzqMcwJ+HO5dwSpMLGH47UaqM5/Oboj8ywK+pPx1dglhWtKLbzb+UYInUFyJ YrWw== X-Gm-Message-State: AOAM533iVEhIp2rIbA/evWnm85vOhQqkWE+Z2Yc4cm9xHUj1uE4/Pyl9 DA/C72t/vwfwb2aA17naZA== X-Google-Smtp-Source: ABdhPJwS0Oc08++7oTKH4IYWa8YQ4ljm/jdHQ4MxgGfEuLFVwJLFyp9sloQn8AlZ3oJWGJPYc/4+nA== X-Received: by 2002:adf:f5c4:: with SMTP id k4mr5707115wrp.23.1590017189567; Wed, 20 May 2020 16:26:29 -0700 (PDT) Received: from localhost (42.red-83-37-136.dynamicip.rima-tde.net. [83.37.136.42]) by smtp.gmail.com with ESMTPSA id u7sm4398657wmm.8.2020.05.20.16.26.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 May 2020 16:26:29 -0700 (PDT) Subject: Re: [dm-devel] [PATCH v4 0/2] Historical Service Time Path Selector To: Gabriel Krisman Bertazi , agk@redhat.com, snitzer@redhat.com Cc: breeves@redhat.com, linux-kernel@vger.kernel.org, khazhy@google.com, song@kernel.org, dm-devel@redhat.com, mpatocka@redhat.com, kernel@collabora.com References: <20200511163910.3778467-1-krisman@collabora.com> From: Xose Vazquez Perez Message-ID: Date: Thu, 21 May 2020 01:26:27 +0200 MIME-Version: 1.0 In-Reply-To: <20200511163910.3778467-1-krisman@collabora.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/11/20 6:39 PM, Gabriel Krisman Bertazi wrote: > This fourth version of HST applies the suggestion from Mikulas Patocka > to do the ktime_get_ns inside the mpath map_bio instead of generic > device-mapper code. This means that struct dm_mpath_io gained another > 64bit field. For the request-based case, we continue to use the block > layer start time information. You should add some info to the multipath.conf.5 man page ( https://git.opensvc.com/gitweb.cgi?p=multipath-tools/.git;a=blob;f=multipath/multipath.conf.5;h=05a5e8ffeb110d969f3b2381eb3b88d7f28380f6;hb=HEAD#l189 ), or none one is going to use it. Thanks.