Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755976AbdGXT1n (ORCPT ); Mon, 24 Jul 2017 15:27:43 -0400 Received: from mail.thelounge.net ([91.118.73.15]:26625 "EHLO mail.thelounge.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753436AbdGXT1Z (ORCPT ); Mon, 24 Jul 2017 15:27:25 -0400 X-Greylist: delayed 1145 seconds by postgrey-1.27 at vger.kernel.org; Mon, 24 Jul 2017 15:27:24 EDT Subject: Re: bcache with existing ext4 filesystem To: Pavel Machek , linux-ext4@vger.kernel.org, kernel list , tytso@mit.edu, kent.overstreet@gmail.com, linux-bcache@vger.kernel.org References: <20170724185703.GA31422@amd> From: Reindl Harald Organization: the lounge interactive design Message-ID: <64c810cf-a95c-f862-f25a-ebd7419b2632@thelounge.net> Date: Mon, 24 Jul 2017 21:08:16 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <20170724185703.GA31422@amd> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: de-CH Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 377 Lines: 11 Am 24.07.2017 um 20:57 schrieb Pavel Machek: > Would it be feasible to run bcache (write-through) with existing ext4 > filesystem? > > I have 400GB of data I'd rather not move, and SSD I could use for > caching. Ok, SSD is connecte over USB2, but I guess it is still way > faster then seeking harddrive on random access i doubt that seriously - USB2 has a terrible latency