[glue-wg] publishing srb information on glue

[Shunde Zhang]

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 at 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
>