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=-5.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 E4A36C3F68F for ; Tue, 7 Jan 2020 15:03:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B85CA208C4 for ; Tue, 7 Jan 2020 15:03:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=toxicpanda-com.20150623.gappssmtp.com header.i=@toxicpanda-com.20150623.gappssmtp.com header.b="OgGw0cf3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728273AbgAGPDQ (ORCPT ); Tue, 7 Jan 2020 10:03:16 -0500 Received: from mail-qt1-f194.google.com ([209.85.160.194]:42378 "EHLO mail-qt1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728020AbgAGPDQ (ORCPT ); Tue, 7 Jan 2020 10:03:16 -0500 Received: by mail-qt1-f194.google.com with SMTP id j5so45488766qtq.9 for ; Tue, 07 Jan 2020 07:03:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=h7Y0+smBHQrAGa/64Z5jgOR5ji6AUKne0dqY0KZD7/4=; b=OgGw0cf3cpaJxjn4GEyod0aFIGI9WmSZz8sjqrqxmdacUyw7jsTfXtokwV7s7sXrMS vKO2H6wpzAqc/sCGA6Z4mLRBk8WAnxaUzChp9GElwYJ3RaQ123hzqvoOMX+lv4D1AUkW Y0vo3+VrM6mWrHAfK77TvOMXKUxslm5YMGYzi0V093Ubw1qjbXkKMip7YeIIyT4kmYE2 D+Yn+b8QCDBUrl6MjR5FxOUO0himpG6iqiFVs7Gg80+sK43lPn+uJDJsesbdYrJRPvg+ 1IPPyrMllV/tUfxWX/dl5q7CwwLU5LgLJDfUw5qFqowwWc0XvuLRfdrKL9vG5Ly2KSIb jJsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=h7Y0+smBHQrAGa/64Z5jgOR5ji6AUKne0dqY0KZD7/4=; b=TUq1pkL8DZKn1F2H7kq4q6B/TlThcrAvYmq/Oa5lt2ij9UqdFDl2Yx5SoJAqc/L4C4 TNkNx/JPPx6Qnrk3pZZf0A+IDG8d1jd1/l7GmuhjgSW16qrIpUVDXN4CHpBdnXt25rWr yYtuy36acl0WCFRdOg7ge7Ai4aoBV9UpjUoyMp/V6Aj+TBh9o95RCyOQR12SsqZE0lsC 9qMaWvu/3UtNSwD0QKYykeESBG3c2YPK8Qf/17LsqJgC5D0vFJWWIC71OIwiaYD5MTQA O1pSPK0/LAs1VRqX5xe6dzzuTylaXFgXbuiR8Vq59yxchBpJIGY4yiokiKTqvA1ch4yA adLQ== X-Gm-Message-State: APjAAAXZaPUB39k7IAnD59RVutraeLv2Z2HNzcblu2HpsfMMtqnt/vAt KhXggEydZcuq2YDxwY7mtLSJdnXh58SoMw== X-Google-Smtp-Source: APXvYqzWkasSSMLn7cD1kj3OO0549IqHAYhJY/LekQjC1s3uje5McGWFqKByz5HyTso41jXcwvJiEA== X-Received: by 2002:ac8:42d7:: with SMTP id g23mr64917194qtm.206.1578409394974; Tue, 07 Jan 2020 07:03:14 -0800 (PST) Received: from ?IPv6:2620:10d:c0a8:1102:ce0:3629:8daa:1271? ([2620:10d:c091:480::5354]) by smtp.gmail.com with ESMTPSA id g52sm22756238qta.58.2020.01.07.07.03.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Jan 2020 07:03:14 -0800 (PST) Subject: Re: [PATCH v2 2/2] btrfs: sysfs, add read_policy attribute To: Anand Jain , linux-btrfs@vger.kernel.org References: <1578372741-21586-1-git-send-email-anand.jain@oracle.com> From: Josef Bacik Message-ID: Date: Tue, 7 Jan 2020 10:03:13 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.3.1 MIME-Version: 1.0 In-Reply-To: <1578372741-21586-1-git-send-email-anand.jain@oracle.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 1/6/20 11:52 PM, Anand Jain wrote: > Add > > /sys/fs/btrfs/UUID/read_policy > > attribute so that the read policy for the raid1 and raid10 chunks can be > tuned. > > When this attribute is read, it shall show all available policies, and > the active policy is with in [ ], read_policy attribute can be written > using one of the items showed in the read. > > For example: > cat /sys/fs/btrfs/UUID/read_policy > [by_pid] > echo by_pid > /sys/fs/btrfs/UUID/read_policy > echo -n by_pid > /sys/fs/btrfs/UUID/read_policy > > Signed-off-by: Anand Jain Reviewed-by: Josef Bacik Thanks, Josef