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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 A7243C3524A for ; Sun, 2 Feb 2020 13:29:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7A5892067C for ; Sun, 2 Feb 2020 13:29:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726679AbgBBN3c convert rfc822-to-8bit (ORCPT ); Sun, 2 Feb 2020 08:29:32 -0500 Received: from mail-a09.ithnet.com ([217.64.83.104]:54832 "EHLO mail-a09.ithnet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726541AbgBBN3c (ORCPT ); Sun, 2 Feb 2020 08:29:32 -0500 X-Greylist: delayed 400 seconds by postgrey-1.27 at vger.kernel.org; Sun, 02 Feb 2020 08:29:31 EST Received: (qmail 14460 invoked by uid 0); 2 Feb 2020 13:22:49 -0000 Received: from skraw.ml@ithnet.com by mail-a09 (Processed in 2.548362 secs); 02 Feb 2020 13:22:49 -0000 X-Virus-Status: No X-ExecutableContent: No Received: from dialin014-sr.ithnet.com (HELO ithnet.com) (217.64.64.14) by mail-a09.ithnet.com with ESMTPS (ECDHE-RSA-AES256-GCM-SHA384 encrypted); 2 Feb 2020 13:22:46 -0000 X-Sender-Authentication: SMTP AUTH verified Date: Sun, 2 Feb 2020 14:22:46 +0100 From: Stephan von Krawczynski To: linux-btrfs@vger.kernel.org Subject: Re: My first attempt to use btrfs failed miserably Message-ID: <20200202142246.1f4c36e3@ithnet.com> In-Reply-To: References: Organization: ith Kommunikationstechnik GmbH X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Sun, 2 Feb 2020 20:56:20 +0800 Qu Wenruo wrote: > On 2020/2/2 下午8:45, Skibbi wrote: > > Hello, > > So I decided to try btrfs on my new portable WD Password Drive > > attached to Raspberry Pi 4. I created GPT partition, created luks2 > > volume and formatted it with btrfs. Then I created 3 subvolumes and > > started copying data from other disks to one of the subvolumes. After > > writing around 40GB of data my filesystem crashed. That was super fast > > and totally discouraged me from next attempts to use btrfs :( > > But I would like to help with development so before I reformat my > > drive I can help you identifying potential issues with this filesystem > > by providing some debugging info. > > > > Here are some details: > > > > root@rpi4b:~# uname -a > > Linux rpi4b 4.19.93-v7l+ #1290 SMP Fri Jan 10 16:45:11 GMT 2020 armv7l > > GNU/Linux > > Pretty old kernel, nor recently enough backports. Exactly this kind of answer made me leave btrfs and never come back again. 4.19.93 is not very far away from the _latest_ longterm kernel released (which is 4.19.101). What you are saying here is that there is no stable working btrfs in longterm kernels at all. Hear, hear. My advice to the OP: use ZFS. Great performance, absolutely stable, no crash in years. -- Regards, Stephan