I am using a filesystem that only suports sequential write. So web could not append, random write, overwrite or truncate a file in this file system.
When I was writing a TTree to TTfile on this file system, I got I/O errors.
@pcanal Is there a way that I can create a TFile with sequential writing policy? Or can I firstly write TTree data to some data buffer, and then sequentially write those data to a root file?