unresolved ref root error

unresolved ref root error

[dima]

Hello,

On a newly created filesystem with btrfs-progs-git-20111009 and the 3.1.0-rc8
kernel I am getting the following error when doing btrfsck after main OS
installation

fs tree 256 refs 2 
        unresolved ref root 256 dir 256 index 2 namelen 8 name __active error 600
found 4215058432 bytes used err is 1
total csum bytes: 3962760
total tree bytes: 157192192
total fs tree bytes: 146976768
btree space waste bytes: 45236856
file data blocks allocated: 4123439104
 referenced 4056010752
Btrfs v0.19-35-g1b444cd-dirty

256 is the subvolume for /
[root@yukikaze ~]# btrfs subvol list /
ID 256 top level 5 path __active
ID 257 top level 5 path __home

Should I be concerned with this error?

I saw a similar question here
http://comments.gmane.org/gmane.comp.file-systems.btrfs/12455
but no hints were provided for the reason of the error.

Any info is appreciated.
thanks
~dima

Re: unresolved ref root error

[Liu Bo]

On 10/16/2011 09:37 AM, dima wrote:
> Hello,
> 
> On a newly created filesystem with btrfs-progs-git-20111009 and the 3.1.0-rc8
> kernel I am getting the following error when doing btrfsck after main OS
> installation
> 
> fs tree 256 refs 2 
>         unresolved ref root 256 dir 256 index 2 namelen 8 name __active error 600
> found 4215058432 bytes used err is 1
> total csum bytes: 3962760
> total tree bytes: 157192192
> total fs tree bytes: 146976768
> btree space waste bytes: 45236856
> file data blocks allocated: 4123439104
>  referenced 4056010752
> Btrfs v0.19-35-g1b444cd-dirty
> 
> 256 is the subvolume for /
> [root@yukikaze ~]# btrfs subvol list /
> ID 256 top level 5 path __active
> ID 257 top level 5 path __home
> 
> Should I be concerned with this error?
> 


Don't worry, this is a known bug of btrfsck's refs check, and just btrfsck,
it does no harm to btrfs.

thanks,
liubo

> I saw a similar question here
> http://comments.gmane.org/gmane.comp.file-systems.btrfs/12455
> but no hints were provided for the reason of the error.
> 
> Any info is appreciated.
> thanks
> ~dima
> 
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Re: unresolved ref root error

[dima]

Thanks Liu Bo!
Understood.
~