Re: [ROOT] Problem in reading Castor files from root

From: Rene Brun (Rene.Brun@cern.ch)
Date: Mon Dec 08 2003 - 19:02:10 MET 

Ruben,

Did you install Root from source? I see that your versions of Root have
different build dates.
In case you installed Root from source, make sure that you use the right
shift library (from /usr/local and not from libpacklib).
 see: http://root.cern.ch/root/Install.html

Rene Brun

Ruben Shahoyan wrote:
> 
> Hello,
> we have the followoing problem: when we try to open the root file (on
> Castor) via rfio. When we try to do this from local cern PC (having done
> klog) it fails, while from lxplus it works. Does anybody have experience
> with such operations? What can be the problem?
> Below are the screenshots of failed (on local pc) and successful (lxplus)
> trials.
> 
> Bets regards,
>         Ruben Shahoyan
> 
> offline@na60farm1:~ klog -principal na60cdr
> Password:
> offline@na60farm1:~ klist
> Ticket file:    /tmp/tkt21591
> Principal:      na60cdr@CERN.CH
> 
>   Issued           Expires          Principal
> Dec  8 18:07:45  Dec  9 19:34:06  krbtgt.CERN.CH@CERN.CH
> Dec  8 18:07:45  Dec  9 19:34:06  afs@CERN.CH
> offline@na60farm1:~ nstouch /castor/cern.ch/na60/test/a.root
> /castor/cern.ch/na60/test/a.root: Permission denied
> offline@na60farm1:~ root -b
>   *******************************************
>   *                                         *
>   *        W E L C O M E  to  R O O T       *
>   *                                         *
>   *   Version   3.05/07    6 October 2003   *
>   *                                         *
>   *  You are welcome to visit our Web site  *
>   *          http://root.cern.ch            *
>   *                                         *
>   *******************************************
> 
> Compiled for linux with thread support.
> 
> CINT/ROOT C/C++ Interpreter version 5.15.94, June 30 2003
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
> root [0] TFile *f ; f = File::Open("rfio:/castor/cern.ch/na60/test/a.root","")
> SysError in <TRFIOFile::TRFIOFile>: file /castor/cern.ch/na60/test/a.root an not be opened for reading (Success)
> (class TFile*)0x0
> root [1]
> 
> ======
> VERSUS
> ======
> 
> [lxplus081] /afs/cern.ch/user/n/na60cdr > klist
> Ticket file:    /tmp/tktp1104032764
> Principal:      na60cdr@CERN.CH
> 
>   Issued           Expires          Principal
> Dec  8 15:52:31  Dec  9 17:18:52  krbtgt.CERN.CH@CERN.CH
> Dec  8 15:52:31  Dec  9 17:18:52  afs@CERN.CH
> [lxplus081] /afs/cern.ch/user/n/na60cdr > nstouch /castor/cern.ch/na60/test/a.root
> [lxplus081] /afs/cern.ch/user/n/na60cdr > root -b
>   *******************************************
>   *                                         *
>   *        W E L C O M E  to  R O O T       *
>   *                                         *
>   *   Version   3.05/07      27 July 2003   *
>   *                                         *
>   *  You are welcome to visit our Web site  *
>   *          http://root.cern.ch            *
>   *                                         *
>   *******************************************
> 
> Compiled for linux with thread support.
> 
> CINT/ROOT C/C++ Interpreter version 5.15.94, June 30 2003
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
> root [0] TFile *f ; f = TFile::Open("rfio:/castor/cern.ch/na60/test/a.root","")
> (class TFile*)0x86893e0
> root [1] f->ls()
> TRFIOFile**             rfio:/castor/cern.ch/na60/test/a.root
>  TRFIOFile*             rfio:/castor/cern.ch/na60/test/a.root
>   KEY: TObject  TObject;1       Basic ROOT object
> root [2]
> 
> André David
> ----------------------------------
> The NA60 Experiment at CERN

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