[OpenAFS] Server connection speed differences

Derrick J Brashear shadow@dementia.org
Sun, 5 Nov 2006 19:20:22 -0500 (EST)

On Sun, 5 Nov 2006, Mr Budzynowski wrote:

> How and when does the cache manager assign ranks to file servers?

Based on classful subnetting (regardless of whether you use it) when it 
encounters them.

> Specifically, does it take the connection speed into account?


> For instance, if an afs cell were to be split across two sites and 
> connected via the internet (by a VPN, say), would clients preferentially 
> take volumes from servers on the local network because their files can 
> be retrieved faster?

No. It should but does not currently do so.

> I guess what I'm really asking is whether, if some servers are 
> connected via a slower line but still fully functional, one would need 
> to make manual adjustments to the rankings


> On a related note, when a RW volume is released, can the RO copies get 
> it off each other? (For instance, RW copy at one site and two RO copies