Hi Jens, Sorry for the late response since I've been away for days. Thanks for your reply and it is very helpful. Can I ask if your SRB is a 'normal' one or it is installed with GSI support or with a gridftp interface? At this stage I just started looking at how to publish SRB to our MDS. but I cannot find fields to put SRB's zone, resource and SRB uses username/password so how I can use ACL to show who can use what resource. If possible, could you also give me a sample of GLUE xml with SRB information? thanks a lot. Cheers, Shunde. Quoting "Jensen, J (Jens)" <j.jensen@rl.ac.uk>:
Shunde Zhang wrote:
Hi all,
I am new to glue schema. May I ask if I can publish SRB information with GLUE schema? Since the examples I saw are all gridftp. thanks a lot.
Cheers, Shunde.
Hi Shunde.
For my 0.02, the answer is yes, sort of. I have actually looked into this very problem, although I haven't spent much time on it yet. I am not an SRB expert myself though, but I am working with people who are.
The trick is, unsurprisingly, to pretend that SRB is a StorageElement, and I aim to come up with a recipe for doing that - provided we can make it work with GridPP/EGEE resources - if we can't, why bother? The main difficulty that I can think of is that many users have personal directories (er, collections) in SRB and it is not straightforward to make automated tools pick up the path from GLUE unless an SA is published for each person or something weird like that.
So the real question is what you aim to achieve with it. SRB has its own control and data transfer protocols. To achieve interoperability you need a standard protocol like the gridftp interface developed by Argonne (I believe) which you can then publish as a data transfer protocol.
The SRB world itself does not use GLUE - at least none of the SRB communities I know and work with. The UK National Grid Service for example has SRB resources and uses GLUE, but the GLUE is not used to publish the SRBs, they are set up independently via user's MdasEnv files.
Hope this helps a bit. If you want to collaborate or do something specific feel free to contact me.
Regards, --jens
-- Dr Jens Jensen Rutherford Appleton Laboratory Science and Technology Facilities Council UK