[Lustre-devel] Queries regarding LDLM_ENQUEUE

[Paul Nowoczynski]

> The name_to_handle() only needs to be called on a single node, and 
> open_by_handle() is called on the other nodes. I agree that this 
> doesn't avoid the full O(n) RPCs for the open itself  but at least it 
> does avoid the full path traversal from every client and on the 
> MDS (replacing it with an MPI broadcast of the handle).
Andreas,
excuse my ignorance, but why does open_by_handle() need to issue an 
RPC?  If it's to obtain the layout, couldn't the layout be encoded into 
the 'handle'?
p
>
> Cheers, Andreas
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