Re: btrfs balance on single device

[Leonidas Spyropoulos <artafinde@gmail.com>]

On Sun, Dec 15, 2013 at 8:24 PM, Hugo Mills <hugo@carfax.org.uk> wrote:
> On Sun, Dec 15, 2013 at 08:20:19PM +0000, Leonidas Spyropoulos wrote:
>> Hey all,
[..]
>> Anyone can explain me the Data row of the above output ? It used to be
>> 19.19GB and now it's 10.00GB. It's like the partition shrunk!? The
>> balance operation finished without issues.
>
>    It freed up some of the unused data chunks, returning them to the
> unallocated space on the device.
>
Oh, so the df report from btrfs doesn't show the total as 'free'! But
it means how much space the filesystem allocated so far.
>> Here's some other information:
>>
>> inglor@tiamat ~$ sudo btrfs filesystem show
>> Label: 'home'  uuid: 458c70e2-7037-4c4d-bba2-3d5288f04510
>>     Total devices 1 FS bytes used 9.56GB
>>     devid    1 size 21.00GB used 10.81GB path /dev/sda3
>
>    You can see that the filesystem is still the same size as before --
> it's just that less of it is allocated.
>
>    There's nothing to worry about here -- it's all working as expected.
>
>    Hugo.
>

Thanks Hugo for the explanation

Leonidas

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