Ocfs2 users - Aug 2007 - About cluster size (read/write)

Hello list,

I need understand more about cluster-size. Cluster size are small space 
when i create some file in ocfs2 disk, but when i read some data this 
size are small part that i can read? Or smal part are block-size to 
read? cluster-size are only to optimize fragmentation?

I create my ocfs2 mounts with block-size 4k and cluster-size 1M and i 
have few files per filesystem with more than 600M. When i append one 
file ocfs2 will increase cluster-size? and when i read, i read all 
cluster-size from disk?

Can someone explain more about this?

Regards

-- 
Marcus Alves Grando <marcus.grando [] terra.com.br>
Suporte Engenharia 1
Terra Networks Brasil S/A
Tel: 55 (51) 3284-4238

Qual ? a sua Terra?

No, clustersize does not play any role during io. It only plays a role
during allocation. Refer FAQ for more.

On Mon, Aug 20, 2007 at 10:37:27AM -0300, Marcus Alves Grando
wrote:
> Hello list,
> 
> I need understand more about cluster-size. Cluster size are small space 
> when i create some file in ocfs2 disk, but when i read some data this 
> size are small part that i can read? Or smal part are block-size to 
> read? cluster-size are only to optimize fragmentation?
> 
> I create my ocfs2 mounts with block-size 4k and cluster-size 1M and i 
> have few files per filesystem with more than 600M. When i append one 
> file ocfs2 will increase cluster-size? and when i read, i read all 
> cluster-size from disk?
> 
> Can someone explain more about this?
> 
> Regards
> 
> -- 
> Marcus Alves Grando <marcus.grando [] terra.com.br>
> Suporte Engenharia 1
> Terra Networks Brasil S/A
> Tel: 55 (51) 3284-4238
> 
> Qual ? a sua Terra?
> 
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