IOError:[Errno 27] File too large

[ch.valderanis at gmail.com]

> Taking a wild guess, I think that you are using a Samba share on a Linux 
> 
> server. A file "FILENAME.xml;" was accidentally creating on this share 
> 
> from the Linux filesystem layer, since Linux will allow you to use 
> 
> semicolons in file names. But samba enforces the same restrictions as 
> 
> Windows, so when you access the file system through sambda, it gives an 
> 
> error when you try to create a new file "FILENAME.sub;".
> 
> This is a wild guess, and could be completely wrong. Please come back and 
> 
> tell us the solution when you have solved it.

So, let me report the solution.
All the files were in an afs filesystem. afs has a limit for the total length of  the filenames per directory. for more details take a look at http://www.inf.ed.ac.uk/systems/AFS/topten.html#Tip13
In my case 10k files with ~160characters per filename were just hitting the limit. The error message is basically misleading.

Makis