From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from postler.lichtfels.com ([78.46.92.195]:33533 "EHLO postler.lichtfels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751969AbaIWNHD (ORCPT ); Tue, 23 Sep 2014 09:07:03 -0400 Received: from localhost (localhost [127.0.0.1]) by postler.lichtfels.com (Postfix) with ESMTP id 44746123C8 for ; Tue, 23 Sep 2014 15:07:01 +0200 (CEST) Received: from postler.lichtfels.com ([127.0.0.1]) by localhost (postler.lichtfels.com [127.0.0.1]) (amavisd-maia, port 10024) with LMTP id 23957-05 for ; Tue, 23 Sep 2014 15:06:57 +0200 (CEST) Received: from hiro.oops.intern (mail.oops.co.at [213.129.238.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by postler.lichtfels.com (Postfix) with ESMTPSA id 1829B123D2 for ; Tue, 23 Sep 2014 15:06:56 +0200 (CEST) Message-ID: <5421706F.6070301@xunil.at> Date: Tue, 23 Sep 2014 15:06:55 +0200 From: "Stefan G. Weichinger" Reply-To: lists@xunil.at MIME-Version: 1.0 To: linux-btrfs@vger.kernel.org Subject: Re: general thoughts and questions + general and RAID5/6 stability? References: <8D1A2626CC69D79-11FC-A2C3@webmail-va141.sysops.aol.com> <54208BBC.1000700@xunil.at> <542162A8.2010700@gmail.com> In-Reply-To: <542162A8.2010700@gmail.com> Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Am 23.09.2014 um 14:08 schrieb Austin S Hemmelgarn: > On 2014-09-22 16:51, Stefan G. Weichinger wrote: >> Is re-creating btrfs-filesystems *recommended* in any way? >> >> Does that actually make a difference in the fs-structure? >> > I would recommend it, there are some newer features that you can only > set at mkfs time. Quite often, when a new feature is implemented, it is > some time before things are such that it can be enabled online, and even > then that doesn't convert anything until it is rewritten. What features for example? I created my main btrfs a few months ago and would like to avoid recreating it as this would mean restoring my root-fs on my main workstation. Although I would do it if it is "worth it" ;-) I assume I could read some kind of version number out of the superblock or so? btrfs-show-super ? S