Btrfs devel - Jun 2009 - [BUG] Cannot Mount Btrfs Volume Created By mkfs.btrfs v0.18-26-g0030f1d

Hi,

I try to format a USB memory with a Btrfs. I can format it with 
mkfs.btrfs without problems. But; when I try to mount it, it fails to 
mount with the below error messages. But the USB memory works fine with 
other filesystems (ext4, XFS etc.). So, the hardware is not faulty.


tarkane@tarkane:~$ sudo mkfs.btrfs -d single -n 4096 /dev/sdb1

WARNING! - Btrfs v0.18-26-g0030f1d IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using

fs created label (null) on /dev/sdb1
         nodesize 4096 leafsize 4096 sectorsize 4096 size 983.98MB
Btrfs v0.18-26-g0030f1d
tarkane@tarkane:~$ sudo mount -t btrfs /dev/sdb1 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
        missing codepage or helper program, or other error
        In some cases useful info is found in syslog - try
        dmesg | tail  or so



And here it is the error log in dmesg


[93428.045686] device fsid 5241391784b5b44e-e9443ebc2843ddb0 devid 1 
transid 7 /dev/sdb1
[93428.046593] BTRFS: couldn''t mount because of unsupported optional 
features (1).
[93428.046627] btrfs: open_ctree failed

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On Thu, Jun 11, 2009 at 03:48:04PM +0300, Tarkan Erimer
wrote:
> Hi,
>
> I try to format a USB memory with a Btrfs. I can format it with  
> mkfs.btrfs without problems. But; when I try to mount it, it fails to  
> mount with the below error messages. But the USB memory works fine with  
> other filesystems (ext4, XFS etc.). So, the hardware is not faulty.
>
>
> tarkane@tarkane:~$ sudo mkfs.btrfs -d single -n 4096 /dev/sdb1
>
> WARNING! - Btrfs v0.18-26-g0030f1d IS EXPERIMENTAL
> WARNING! - see http://btrfs.wiki.kernel.org before using
Where did your btrfs-progs come from?  You''re using the latest and
great
utilities that create a new disk format.  You can find the new disk in
the newformat2 branch of btrfs-unstable kernel repo.

(v0.19 will be released with this today).

-chris
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On 06/11/2009 04:01 PM, Chris Mason wrote:
> Where did your btrfs-progs come from?  You''re using the latest and
great
> utilities that create a new disk format.  You can find the new disk in
> the newformat2 branch of btrfs-unstable kernel repo.
>
> (v0.19 will be released with this today).
>
> -chris
>    
Oops, it''s my bad. I forgot to compile new "newformat2"
kernel ;-)
I think, it will be better for me to take more coffee :-) Sorry for the 
noise :-)

BTW, maybe you can update the kernel branch to "2.6.30" ?

Tarkan
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On Thu, Jun 11, 2009 at 04:09:56PM +0300, Tarkan Erimer
wrote:
> On 06/11/2009 04:01 PM, Chris Mason wrote:
>> Where did your btrfs-progs come from?  You''re using the latest
and great
>> utilities that create a new disk format.  You can find the new disk in
>> the newformat2 branch of btrfs-unstable kernel repo.
>>
>> (v0.19 will be released with this today).
>>
>> -chris
>>    
>
> Oops, it''s my bad. I forgot to compile new "newformat2"
kernel ;-)
> I think, it will be better for me to take more coffee :-) Sorry for the  
> noise :-)
>
> BTW, maybe you can update the kernel branch to "2.6.30" ?
The newformat2 branch is on 2.6.30 as of last night.

-chris
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On 06/11/2009 04:10 PM, Chris Mason wrote:
> The newformat2 branch is on 2.6.30 as of last night.
>
> -chris
>
>    
Thanks! I will try, immediately :-)
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