btrfs fi df shows "unknown" ?

btrfs fi df shows "unknown" ?

[Swâmi Petaramesh]

Hi there,

Since a few days, I have noticed that "btrfs fi df /" displays an entry about 
"unknown" used space, and I can see this on several Fedora machines, so it is 
not an issue related to a given system...

Does anybody know what these "unknown" data are ?

i.e:

# btrfs fi df /
Data, single: total=106.00GiB, used=88.28GiB
System, DUP: total=32.00MiB, used=24.00KiB
Metadata, DUP: total=1.00GiB, used=520.36MiB
unknown, single: total=176.00MiB, used=0.00

# btrfs --version
Btrfs v3.14.2

# uname -r
3.15.5-200.fc20.x86_64

TIA, kind regards.

-- 
Swâmi Petaramesh <swami@petaramesh.org> http://petaramesh.org PGP 9076E32E

Re: btrfs fi df shows "unknown" ?

[Hugo Mills]

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On Thu, Jul 17, 2014 at 10:02:01AM +0200, Swâmi Petaramesh wrote:
> Hi there,
> 
> Since a few days, I have noticed that "btrfs fi df /" displays an entry about 
> "unknown" used space, and I can see this on several Fedora machines, so it is 
> not an issue related to a given system...
> 
> Does anybody know what these "unknown" data are ?

   It's the block reserve, which used to be part of metadata, but is
now split out to its own type. An updated userspace should be able to
show it properly.

   Hugo.

> i.e:
> 
> # btrfs fi df /
> Data, single: total=106.00GiB, used=88.28GiB
> System, DUP: total=32.00MiB, used=24.00KiB
> Metadata, DUP: total=1.00GiB, used=520.36MiB
> unknown, single: total=176.00MiB, used=0.00
> 
> # btrfs --version
> Btrfs v3.14.2
> 
> # uname -r
> 3.15.5-200.fc20.x86_64
> 
> TIA, kind regards.
> 

-- 
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