Re: can root files be too long?

From: Fons Rademakers (Fons.Rademakers@cern.ch)
Date: Wed Dec 03 1997 - 15:16:34 MET 

Hi Jobst,

   there should be no problem reading ROOT files up to the current max
file size of 2 GB. Could you describe the environemt, e.g. hardware, OS,
is file on NFS or AFS, etc. Is this problem repeatable, are there maybe
network problems?

Cheers, Fons.


 Jobst Heinrich Koehne wrote:
> 
> Dear Rene and Fons,
> 
> I have written a conversion program for our FPACK/BOS
> DST into a root tree file. Root saves 25% of disk space :-)
> 
> Everything works, except that if I test with 10 times
> the events I cannnot open the file. I get the following error
> message:
> -rw-r--r-- 1 kohne h1 524250001 Dec 3 12:48 CDST2.C9620001.root
> 
> root [2] TFile("/h1wgs/h1mpim1/x01/usr/kohne/CDST2.C9620001.root");
> Error in <TFile::Read>: error reading all requested bytes from file
> /h1wgs/h1mpim1/x01/usr/kohne/CDST2.C9620001.root, got 0 of 231
> 
> leaving root then causes a *** Break *** segmentation violation.
> 
> cheers
> Jobst
> 
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>                                 Jobst Heinrich Koehne
>                                 MPI fuer Physik Muenchen
>                                 c/o DESY FH1
>                                 H1 collaboration
>                                 e-mail: kohne@desy.de
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

-- 
Org:    CERN, European Laboratory for Particle Physics.
Mail:   1211 Geneve 23, Switzerland          Phone: +41 22 7679248
E-Mail: Fons.Rademakers@cern.ch              Fax:   +41 22 7677910

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