From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:33180 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753079AbbJQQgh (ORCPT ); Sat, 17 Oct 2015 12:36:37 -0400 Received: by wijp11 with SMTP id p11so47098179wij.0 for ; Sat, 17 Oct 2015 09:36:36 -0700 (PDT) Received: from [10.232.154.184] (host86-187-121-52.range86-187.btcentralplus.com. [86.187.121.52]) by smtp.googlemail.com with ESMTPSA id jf13sm627498wic.8.2015.10.17.09.36.35 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 17 Oct 2015 09:36:36 -0700 (PDT) To: "linux-btrfs@vger.kernel.org" From: Xavier Gnata Subject: btrfs autodefrag? Message-ID: <56227910.7000208@gmail.com> Date: Sat, 17 Oct 2015 18:36:32 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, On a desktop equipped with an ssd with one 100GB virtual image used frequently, what do you recommend? 1) nothing special, it is all fine as long as you have a recent kernel (which I do) 2) Disabling copy-on-write for just the VM image directory. 3) autodefrag as a mount option. 4) something else. I don't think this usecase is well documented therefore I asked this question. Xavier