On Feb 27, 2014, at 11:13 PM, Chris Murphy <li...@colorremedies.com> wrote:

> 
> On Feb 27, 2014, at 11:19 AM, Justin Brown <otakujunct...@gmail.com> wrote:
> 
>> terra:/var/lib/nobody/fs/ubfterra # btrfs fi df .
>> Data, single: total=17.58TiB, used=17.57TiB
>> System, DUP: total=8.00MiB, used=1.93MiB
>> System, single: total=4.00MiB, used=0.00
>> Metadata, DUP: total=392.00GiB, used=33.50GiB
>> Metadata, single: total=8.00MiB, used=0.00
> 
> After glancing at this again, what I thought might be going on might not be 
> going on. The fact it has 17+TB already used, not merely allocated, doesn't 
> seem possible if there's a hard 16TB limit for Btrfs on 32-bit kernels.
> 
> But then I don't know why du -h is reporting only 13T total used. And I'm 
> unconvinced this is a balance issue either. Is anything obviously missing 
> from the file system?

What are your mount options? Maybe compression?

Clearly du is calculating things differently. I'm getting:

du -sch = 4.2G
df -h    = 5.4G
btrfs df  = 4.7G data and 620MB metadata(total).

I am using compress=lzo.

Chris Murphy

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