Re: Inquiry: disk format change in the future

[Eric Sandeen <sandeen-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

Ryusuke Konishi wrote:
> (reply added to "Yann E. MORIN")
> 
> Hi,
> On Wed, 19 Aug 2009 11:31:56 +0200, "Yann E. MORIN" wrote:
>> Hello All!
>>
>> I've searched the archives, but could not find the answer to the
>> following questions:
>>
>>  - will there be, or what is the probability of, a disk format change
>>    in the near future (few months)?
> 
> We still have some possibilities for the format change at this time.
> 
> Basically I intend to keep the disk format, but some new features like
> 
> - Extended attributes, ACLs
> - Rollback
> - Checkpoint based remote replication
> 
> may require it.  So far, we haven't seen any specific requisition.
>  

Do you expect that any of the changes may impact the ability of
utilities such as blkid or file to recognize a nilfs filesystem?

I'd happily write patches for those utilities to add nilfs recognition
if you think there is a stable fingerprint that can be recognized.

Thanks,
-Eric