[Sheepdog] Sheep gateway question

[MORITA Kazutaka]

At Tue, 8 Nov 2011 22:53:41 -0000,
Matthew Law wrote:
> 
> 
> I was just reviewing the sheepdog docs and looking at the architecture
> overview diagram here:

Thanks a lot!

> 
> https://github.com/collie/sheepdog/wiki/Sheepdog-Design
> 
> made me wonder if all I/O to the gateway is through one node in the
> cluster, making that node a bottleneck in a large cluster?

Different VMs can use different gateways, so if there are many VMs,
the gateway cannot be a bottleneck.  Our goal is not to provide the
combined bandwidth of many disks to one VM, but rather to achieve
scalability; Sheepdog provides enough bandwidth to each VM even if
many VMs use Sheepdog at the same time.

Thanks,

Kazutaka