Hi Tommaso,
Indeed that is what you can do. The reason not to do that is that you are
involving the world in a particularly local problem -- the unbalanced
redirectors that are regionally specific. I suppose this is akin to
starting a world war over events in the balkans. Of course, we know this
has happened. Do we want to do it again? So, I would suggest solving your
particular problem by having a regional "meta" redirector that tries to
sort out the peculiar setup that you have.
Andy
On Tue, 8 Jul 2014, Tommaso Boccali wrote:
> Uhm, I see your point. Indeed now if I search for a not existing file with
>
> xrdcp -d 3 root://xrootd-redic.pi.infn.it//store/test/xrootd/T2_ES_IFCA/store/mc/SAM/GenericTTbar/GEN-SIM-RECO/CMSSW_5_3_1_START53_V5-v1/0013/CE4D66EB-5AAE-E111-96D6-003048D37524.rootf .
>
>
> I get redirected to cern (global redir) via
>
> 140709 07:49:38 6036 Xrd: HandleServerError: Received redirection to [cms-xrd-global.cern.ch:1094]. Token=[]]. Opaque=[tried=+1213xrootd.ba1213xrootd-redic.pi.infn.it].
>
> so opaque seems a mangled version of BOTH cmsd.
>
> BUT:
>
> If I go back to the old way (connecting each redirector to ITS OWN cmsd, not to the DNS, I mean going back to
>
> all.manager xrootd-redic.pi.infn.it 1213
>
> instead of
>
> all.manager xrootd-cms.infn.it+ 1213
> )
>
> I get
>
> 140709 07:52:44 6635 Xrd: HandleServerError: Received redirection to [cms-xrd-global.cern.ch:1094]. Token=[]]. Opaque=[tried=+1213xrootd-redic.pi.infn.it].
>
> So in this case going up and down would work, right? because when coming down it will try xrootd.ba.infn.it:1213 since it is not in the opaque
>
> it would be like having 2 EU redirectors which do not speak to each other, and connect to the global one. In this case, an unbalance in their servers (even transient) would be cured by the global redirector.
> Exactly why this is not supposed to be ok? Looking at the first email, for a really non existing file, it can try once per redirector, but I would prefer to pay this price here ...
>
> ciao ciao
>
> tom
>
>
>
>
> ---
> Reply to this email directly or view it on GitHub:
> https://github.com/xrootd/xrootd/issues/124#issuecomment-48432831
>
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