Hi Jochen,
you should try to open such files with TRFIOFile instead of TFile!
Regards,
Horst
Jochen Schieck wrote:
>
> Hello,
>
> we are trying to acces root files in CASTOR with
>
> TFile *f1 =
> TFile::Open("rfio:/castor/cern.ch/user/s/schieck/mc2790_1_111.root");
>
> and the system complains with:
>
> Error in <TRFIOFile::TRFIOFile>: file
> /castor/cern.ch/user/s/schieck/mc2790_1_111.root does not exist
>
> But the file exists as you can see:
>
> [lxplus044] ~ > rfstat /castor/cern.ch/user/s/schieck/mc2790_1_111.root
> Device : 0
> Inode number : 4236991
> Protection : -rw-r--r-- (100644)
> Hard Links : 1
> Uid : 19235 (schieck)
> Gid : 1135 (ws)
> Size (bytes) : 126547074
> Last access : Thu Nov 29 12:15:50 2001
> Last modify : Thu Nov 29 12:00:40 2001
> Last stat. mod. : Thu Nov 29 12:00:40 2001
>
> We tried a similar thing in PAW with opening a hbook file in CASTOR and it
> actually worked!
>
> We managed to access the file with manual stagein -M and using a symbolic
> link. However, if we try to access a tree within the root file via
>
> TFile *f = TFile::Open("rfio:link.root");
> TTree *ntuple = f.Get("h10");
> ntuple->StartViewer();
>
> and try to plot a variable in a TBranch ROOT crashes.
>
> We use root ver 3.01 from afs
>
> ROOTSYS=/afs/cern.ch/na49/library.4/ROOT/new/i386_redhat60/root
> LD_LIBRARY_PATH=/afs/cern.ch/na49/library.4/ROOT/new/i386_redhat60/root/lib/
>
> on lxplus.
>
> Thanks for any help
>
> Jochen
>
> ----------------------------------------------------------------------
> Jochen Schieck
> EMAIL: schieck@mppmu.mpg.de
> Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut)
> Tel: +49 89 323 54 352
> +49 179 54 72 113
> Fax: +49 89 322 67 04
> Foehringer Ring 6 / Room 245
> 80805 Muenchen
> ----------------------------------------------------------------------
--
-----------------------------------------------------------------
Dr. Horst Goeringer email: H.Goeringer@gsi.de
GSI Computing Center Tel: +49-6159-71-2553
Planckstr. 1 Fax: +49-6159-71-2986
D-64291 Darmstadt, Germany
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