[OpenAFS] oAFS & Arla

[Mike Fedyk]

Thomas Kirk wrote:

>Hep
>
>On Mon, Jul 19, 2004 at 12:13:23PM -0400, Jeffrey Hutzelman wrote:
>
>  
>
>>Actually, it's much cooler than that.  Arla keeps track of the apparent 
>>performance of each server it talks to (which can be a function of actual 
>>fileserver capabilities, network speed, distance, load, etc), and 
>>dynamically adjusts what fraction of its requests are sent to each server 
>>accordingly.
>>    
>>
How does that deal with file versioning where a file is updated on the 
r/w volume, and being transferred to the several r/o volumes?  Is it an 
atomic switch once the transfer is complete, or can you see partial 
updates nfs style?

>
>Does OpenAFS work this way to or how is the "load" distributed among
>more OpenAFS servers?
>  
>
I read once on the lists, that it only uses one r/o volume, and it picks 
the one with the lowest IP address even if it's not local.  But I really 
hope it was wrong.

Mike