[ROOT] Large file support

From: karl hauschild (hauschil@csnsm.in2p3.fr)
Date: Mon Sep 08 2003 - 14:16:14 MEST


Hi,

I would like to create files greater than the current 2 GB
restriction.

I found this an old mail related to root files > 2 GB from
Norbert Danneberg "Large Files" and the reply from Rene which
dates from Thu Jul 29 1999.

In it is stated that
"One of the TFile data members fUnits describe the number of bytes for
the pointers in the file. Currently fUnits=4. Setting fUnits to 8 to get
64 bits pointers requires a few more changes (typedef for Seek_t in
particular)."

Has anyone performed these changes ?

Thanks,

Karl



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