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On 6/15/19 1:27 AM, Andrew Hanushevsky wrote: > Hi Adrian, Hi! > On Fri, 14 Jun 2019, Adrian Sevcenco wrote: > >> on the dfs topic with central lookup, how is the redirector aware about >> the location of the data? i can make sure that the mountpoint is >> identical over all servers (redirector and xrootd data servers alike) >> but should i also set up on the redirector things like oss.space >> and for ALICE case the specific authorization and file name translation >> (ofs.authorize ofs.authlib oss.namelib) ? > Presumably, the redirector has access to the DFS. Since in a DFS setup > all servers have the same file then if the redirector finds the file in > the DFS it knows that all the servers must have the same file. In this > case, the DFS paths must be exported the same way in the redirector as > in the servers and the same Name2Name must be used. I don't see why you > need oss.space (other than token assignment) if you are using a DFS. The > simplest solution is to use the same config file for everyone with > minimal exceptions for the redirector using if-else-fi. There is no need > to do authorization (and it would fail if you did) for the redirector. ok, thanks a lot for all clarifications! i forwarded these details to my ALICE italian colleagues >> hmm, while i use cms.sched i did not use cms.perf >> and i see that cms.perf have no pgm default even if there is a >> provided script /usr/share/xrootd/utils/XrdOlbMonPerf > Correct. Thet's the default script we have. You may need to change it if > your system isn't like he one we envisaged when that was written. > >> so, given that cms.perf was not set up should i understand that the >> specifications of cpu and io in cms.sched are just ignored as there is >> no facility for load reporting? > Yes, the values were always set to zero. uh oh .. i think that on cms.sched documentation should be a BOLD note, specifying that the option is invalid without cms.perf additionally, i think that cms.perf should default to use the script that is packaged with the xrootd to have a minimal functional tool Thank you! Adrian ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1