[Ocfs2-users] how to format

[Sunil Mushran]

Yes, in 2.6.28 (and .27) one can create a volume > 16TB if the
clustersize is made > 4KB. Multiplying the clustersize with 4G
gets you the volume size limit.

The reason mkfs is failing is because tools 1.4.1 is a bit dated.
The mkfs in the git repo has the changes needed. Yes, we need to
release an updated version of the tools. ;)

BTW, we intend to allow clustersize 4KB to break the 16T volume size
limit too. Just a matter of time.

Sunil

Brian Kroth wrote:
> Brett Worth <brett at worth.id.au> 2009-01-14 20:00:
>   
>> Christophe BOUDER wrote:
>>
>>     
>>> but i can't format my new big device to use more than 16To for it.
>>>       
>> You should "Consider increasing the block size" to perhaps 16k.  That should increase the
>> size to 64TB
>>     
>  
> I think he meant cluster size.
>
> http://oss.oracle.com/projects/ocfs2/dist/documentation/v1.2/ocfs2_faq.html
>
> Look at number 64 and 32.
>
> I know the documentation is for the previous version, but I believe the
> principles still apply.
>
> Note that since this sets the smallest allocatable size to a single
> file, if your volume is meant for many small files you'll end up wasting
> a lot of space.  Perhaps the data in inode feature helps with that
> though.  I've used an increased cluster size on media volumes before
> though and had no troubles.
>
> Brian
>
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