Hi All, I repeatedly get a reading error while reading root-files. I don't know the exact cause of this, but it only occurred after our system was 'upgraded' from RH 5.1 to RH 6.2. First I thought that it might be connected to my own code, so I dressed down the program to a minimum, but it still occurs. I read (NA49) mini-DST from a disk which is accessible through rfio. Below is a snippet of the output, including the error message: Event 1413 3085(110000) (collected Parts: 125506638) Real time 5.403e+04 CPU 9.111e+03 SysError in <TFile::ReadBuffer>: error reading from file /shift/na49i06/data1/root49-mdst/00B/t49run1413.3.root (Input/output error) Error in <TBranch::GetBasket>: File problem at address:36217952, basket seekkey=0, branch:fPrimaryParticles.fZFirst SysError in <TFile::ReadBuffer>: error reading from file /shift/na49i06/data1/root49-mdst/00B/t49run1413.3.root (Input/output error) Error in <TBranch::GetBasket>: File problem at address:36229864, basket seekkey=0, branch:fPrimaryParticles.fXLast Event 1413 3586(110500) (collected Parts: 126060441) As you can see the programme has been reading for 54030 s, i.e. 15 hours, so I don't expect any problems with the afs tokens. (Note that the 15 hours reading is not a single file, but a list of files.) Although another 'local' error is not excluded. Could anyone please give me an indication of what these error messages mean?? I'm still using ROOT 2.23/12, but will try the same stuff with the newest ROOT version, although I'm not aware of any changes which would affect the observed behaviour. Please be aware that a new 'test' each time takes many hours, because the error generally occurs after a long period of reading.... Thanks in advance, Marco van Leeuwen.
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