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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 2E14DC43441 for ; Thu, 15 Nov 2018 20:18:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3D4520858 for ; Thu, 15 Nov 2018 20:18:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3D4520858 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=romanrm.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-btrfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726941AbeKPG2N (ORCPT ); Fri, 16 Nov 2018 01:28:13 -0500 Received: from len.romanrm.net ([91.121.75.85]:58374 "EHLO len.romanrm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725809AbeKPG2N (ORCPT ); Fri, 16 Nov 2018 01:28:13 -0500 Received: from natsu (unknown [IPv6:fd39::e99e:8f1b:cfc9:ccb8]) by len.romanrm.net (Postfix) with SMTP id 69D0C20243; Thu, 15 Nov 2018 20:18:54 +0000 (UTC) Date: Fri, 16 Nov 2018 01:18:54 +0500 From: Roman Mamedov To: Juan Alberto Cirez Cc: linux-btrfs@vger.kernel.org Subject: Re: BTRFS on production: NVR 16+ IP Cameras Message-ID: <20181116011854.0f1d1c9a@natsu> In-Reply-To: References: X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Thu, 15 Nov 2018 11:39:58 -0700 Juan Alberto Cirez wrote: > Is BTRFS mature enough to be deployed on a production system to underpin > the storage layer of a 16+ ipcameras-based NVR (or VMS if you prefer)? What are you looking to gain from using Btrfs on an NVR system? It doesn't sound like any of its prime-time features -- such as snapshots, checksumming, compression or reflink copying -- are a must for a bulk video recording scenario. And even if you don't need or use those features, you still pay the price for having them, Btrfs can be 2x to 10x slower than its simpler competitors: https://www.phoronix.com/scan.php?page=article&item=linux418-nvme-raid&num=2 If you just meant to use its multi-device support instead of a separate RAID layer, IMO that can't be considered prime-time or depended upon in production (yes, not even RAID 1 or 10). -- With respect, Roman