[Lustre-discuss] What are the current striping limits?

[Oleg Drokin]

Hello!

On Sep 20, 2009, at 3:51 PM, Geoff Lustre wrote:

> Dear List
> The excellent wiki:
> http://www.inter-mezzo.org/index.php?title=MDS_striping_format
>
> states that
> Note: Limits for stripe settings are:
> 	• Maximum striping count for a single file is 160.

This is still current (work in bug 4424 is changing this).

> 	• Maximum striping count for the system is 65532.

This is current, I think.

> 	• Minimum striping size is 65536.

This is also current (not sure why people would like this to be any  
smaller).

> 	• Result of stripe_size * stripe_count should less than 0xffffffff.

This was changed, and now maximum stripe size could be up to 4G-64k

Bye,
     Oleg