From: Anand Jain <Anand.Jain@oracle.com>
To: "Garry T. Williams" <gtwilliams@gmail.com>, linux-btrfs@vger.kernel.org
Subject: Re: Btrfs RAID1 File System Grew Something Extra
Date: Wed, 18 Dec 2013 10:46:29 +0800 [thread overview]
Message-ID: <52B10C85.90405@oracle.com> (raw)
In-Reply-To: <1617587.38j2eTuIdt@vfr>
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
>
next prev parent reply other threads:[~2013-12-18 2:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-18 2:03 Btrfs RAID1 File System Grew Something Extra Garry T. Williams
2013-12-18 2:46 ` Anand Jain [this message]
2013-12-18 4:12 ` Garry T. Williams
2013-12-18 8:13 ` Hugo Mills
2013-12-18 8:28 ` Duncan
2013-12-22 1:14 ` Kai Krakow
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