From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f45.google.com ([209.85.215.45]:36175 "EHLO mail-lf0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751350AbdIEMgN (ORCPT ); Tue, 5 Sep 2017 08:36:13 -0400 Received: by mail-lf0-f45.google.com with SMTP id m199so10328744lfe.3 for ; Tue, 05 Sep 2017 05:36:12 -0700 (PDT) Received: from m176-71-216-251.cust.tele2.se ([2a00:801:210:fb6:6464:df0e:ccb4:edb0]) by smtp.googlemail.com with ESMTPSA id h100sm118494lji.58.2017.09.05.05.36.09 for (version=TLS1_2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256/256); Tue, 05 Sep 2017 05:36:10 -0700 (PDT) Date: Tue, 5 Sep 2017 14:36:06 +0200 (GMT+02:00) From: A L To: linux-btrfs@vger.kernel.org Message-ID: <967c296.1c5a576e.15e520a6623@gmail.com> In-Reply-To: <710ec5d1-adbf-4ce5-50a5-8b8266ccb672@rqc.ru> References: <710ec5d1-adbf-4ce5-50a5-8b8266ccb672@rqc.ru> Subject: Re: Is autodefrag recommended? MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: There is a drawback in that defragmentation re-dups data that is previously deduped or shared in snapshots/subvolumes. ---- From: Marat Khalili -- Sent: 2017-09-04 - 11:31 ---- > Hello list, > good time of the day, > > More than once I see mentioned in this list that autodefrag option > solves problems with no apparent drawbacks, but it's not the default. > Can you recommend to just switch it on indiscriminately on all > installations? > > I'm currently on kernel 4.4, can switch to 4.10 if necessary (it's > Ubuntu that gives us this strange choice, no idea why it's not 4.9). > Only spinning rust here, no SSDs. > > -- > > With Best Regards, > Marat Khalili > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html