[Twg] [Discuss] DDN requirements

[Nathan Rutman]

On May 29, 2012, at 9:23 AM, John Carrier wrote:


	
	I received this list from DDN over the weekend.   I note that the first two items on their list were not captured during our requirements gathering this spring.   I think we should add them to our requirements document, but we need to discuss how they impact our recommendations to the OpenSFS Board.
	 
	I have added these to the spreadsheet and taken the liberty of matching “patch-less server support” with our existing “better support for newer kernels”. 
	 
	--jc
	 
	DDN's Lustre requirements for OpenSFS TWG
	 
	1)  Architecture/Developer documentation   
	       Well documented internals of MDS, MGS, OSS, OST, OSD API, etc. 


Interestingly, this first item is not on anyone else's list, however I also think it is important for the dissemination of Lustre knowledge and to help grow the Lustre contributor community.  I also believe Oak Ridge feels strongly about this, as the producers of the first Lustre Internals doc.  I think an expansion and update of this is worthy of funding consideration.



	
	 
	2) Improved small and medium I/O performance (compare to GPFS)  

	
	
	3) Single client performance while preserving scalability   (even at a single thread per client)
	4) OST migration/rebalancing  (compare to GPFS)
	5) LNET channel bonding 
	6) Patch-less server support
	7) Single MDS File create performance  
	8) Single MDS Directory traversal and attribute retrieval performance 
	9) Improved Lustre tests and testing infrastructure 
	10) Quality of service (mechanism and policies) 
	 
	 
	 
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