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salut Jérôme,

Jerome LAURET wrote:

>
>     Hello Peter,
>
>     I beleive we asked how to do that at some point (hide
> the path arranegement) except that we could not figure out on how
> to mix /home and /data into a single substitution. Your case of
> oss.localroot /kanga and oss.remoteroot /kanga or /xrootd at SLAC
> ar a bit too convenient. Can we trick olb with soft-link or there
> is a simple syntax which can take care of all /data + /home (the
> path afterward is all and the same) ??

in a multi experiment setup, I "tricked" the system by using soft links, 
making one single filesystem being visible using two different prefix, 
but I don't think this is exactly what you want in your particular case.
cheers,
JY

>
>        
>
> Peter Elmer wrote:
>
>>   Hi Pavel,
>>
>> On Sun, Feb 27, 2005 at 01:05:46PM +0100, Pavel Jakl wrote:
>>
>>> we are using in our conf files export multiple directories and all 
>>> data from these directives are accessible:
>>>
>>> xrootd.export /data0
>>> xrootd.export /data1
>>> xrootd.export /data2
>>> xrootd.export /home
>>
>>
>>
>>   Hmm, you are probably right: perhaps this was something that Andy 
>> fixed at some point? I see Matt is using the xrootd version from ROOT 
>> 4.02-00 itself (i.e.  20041124-0752). What version are you running at 
>> BNL?
>>
>>   Matt, could you try the latest "development" version 20050226-0852? 
>> This
>> is a development version, but the one we are currently testing to become
>> the next "production" version.
>>
>>   (Unfortunately it looks like we got one of the intermediate 
>> development
>> versions of the xrootd server itself into the production version of 
>> ROOT!
>> It is no big deal to download and build the proper version of the server
>> separately, but we'll need to be careful in the future to make sure only
>> production versions of xrootd wind up in production versions of ROOT...)
>>
>>
>>> I also enlose the log file from redirector where you can see, that 
>>> files (from /data1 and data2) are located and redirected to right 
>>> node without using cache file system.
>>>
>>> 050227 12:14:22 28868 odc_Locate: user=starlib.782:12@rcas6002 
>>> redirected to rcas6067.rcf.bnl.gov:1095 by xrdstar 
>>> path=/data2/starlib/reco/productionCentral/FullField/P02ge/2001/318/st_physics_2318037_raw_0012.MuDst.root 
>>>
>>> 050227 12:14:22 28868 odc_Receive: Server: Received from 
>>> xrdstar.rcf.bnl.gov: 481 !try rcas6067.rcf.bnl.gov:1095
>>> 050227 12:14:22 28868 odc_Locate: user=starlib.782:12@rcas6002 
>>> redirected to rcas6067.rcf.bnl.gov:1095 by xrdstar 
>>> path=/data2/starlib/reco/productionCentral/FullField/P02ge/2001/318/st_physics_2318037_raw_0008.MuDst.root 
>>>
>>
>>
>>
>>   I guess the "/data2", etc. is left from your previous method of 
>> finding
>> the files? In general we try to hide that from the user (since it is 
>> an internal detail of the server-side) with some combination of the 
>> cache filesystem and the use of the "localroot" directive.
>>                                    Pete
>>
>> ------------------------------------------------------------------------- 
>>
>> Peter Elmer     E-mail: [log in to unmask]      Phone: +41 (22) 
>> 767-4644
>> Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, 
>> Switzerland
>> ------------------------------------------------------------------------- 
>>
>
>