[Sheepdog] [PATCH] sheep: disable object cache by default

[Liu Yuan]

On 05/10/2012 04:10 PM, MORITA Kazutaka wrote:

> I know some users who use sheepdog with two clusters:
> 
>  - Storage cluster
>    Each machine has huge storage area, and sheeps (non-gateway) run on
>    it.
> 
>  - VM cluster
>    Each machine has huge memory to run many VMs, and only tiny storage
>    to store its host operating system, and gateway nodes and qemus run
>    on the machine.
> 


I think sheepfs will hand file page cache to this kind of use case if it
needs memory cache on gateway-only node to maximize memory usage. Also,
even with this small gateway storage node, we could make advantage of
the unused local storage if any, if we implement a object cache *reclaim
mechanism*, to maximize the resource usage for some nodes with less care
about consistency, or to share read-only objects.

Thanks,
Yuan