From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f50.google.com ([209.85.213.50]:53743 "EHLO mail-yh0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751273Ab3LRCKN (ORCPT ); Tue, 17 Dec 2013 21:10:13 -0500 Received: by mail-yh0-f50.google.com with SMTP id b6so5057554yha.23 for ; Tue, 17 Dec 2013 18:10:12 -0800 (PST) Received: from vfr.localnet (adsl-74-190-214-178.asm.bellsouth.net. [74.190.214.178]) by mx.google.com with ESMTPSA id w8sm28105642yhg.8.2013.12.17.18.03.42 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Dec 2013 18:03:42 -0800 (PST) From: "Garry T. Williams" To: linux-btrfs@vger.kernel.org Subject: Btrfs RAID1 File System Grew Something Extra Date: Tue, 17 Dec 2013 21:03:41 -0500 Message-ID: <1617587.38j2eTuIdt@vfr> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-btrfs-owner@vger.kernel.org List-ID: I have been using btrfs for my /home partition on my home machine for a few years now. I created the file system RAID1 using two disk partitions. Recently I noticed btrfs fi df shows extra Data, System, and Metadata allocations. And btrfs fi show indicates extra allocations on one of my disk drives accounting for the 20 MiB allocation in the df display. I'm confused. What does this mean? garry@vfr$ sudo btrfs subvolume list /home garry@vfr$ sudo btrfs filesystem df /home Data, RAID1: total=32.00GiB, used=21.01GiB --> Data, single: total=8.00MiB, used=0.00 System, RAID1: total=8.00MiB, used=12.00KiB --> System, single: total=4.00MiB, used=0.00 Metadata, RAID1: total=15.00GiB, used=424.60MiB --> Metadata, single: total=8.00MiB, used=0.00 garry@vfr$ sudo btrfs filesystem show /home Label: none uuid: 6c3aeff6-9a50-4481-a175-7b98980eb638 Total devices 2 FS bytes used 21.43GiB --> devid 1 size 373.76GiB used 47.03GiB path /dev/sda4 devid 2 size 373.76GiB used 47.01GiB path /dev/sdb4 Btrfs v3.12 garry@vfr$ If it matters, I create a snapshot each night and run a rsync backup to another drive and then delete the snapshot. garry@vfr$ uname -r 3.11.10-200.fc19.x86_64 garry@vfr$ rpm -q btrfs-progs btrfs-progs-3.12-1.fc19.x86_64 -- Garry T. Williams