From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:25525 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750875Ab3LRCiP (ORCPT ); Tue, 17 Dec 2013 21:38:15 -0500 Message-ID: <52B10C85.90405@oracle.com> Date: Wed, 18 Dec 2013 10:46:29 +0800 From: Anand Jain MIME-Version: 1.0 To: "Garry T. Williams" , linux-btrfs@vger.kernel.org Subject: Re: Btrfs RAID1 File System Grew Something Extra References: <1617587.38j2eTuIdt@vfr> In-Reply-To: <1617587.38j2eTuIdt@vfr> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Garry, this is a known bug in mkfs.btrfs, the workaround for now is to run balance on FS having some data. so that unused group- profile will go away. HTH, Anand On 12/18/2013 10:03 AM, Garry T. Williams wrote: > 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 >