On Mar 24, 4:45 pm, "R. David Murray" <rdmur...@bitdance.com> wrote: > Sreejith K <sreejith...@gmail.com> wrote: > > On Mar 24, 2:12 pm, Ant <ant...@gmail.com> wrote: > > > On Mar 24, 7:59 am, Sreejith K <sreejith...@gmail.com> wrote: > > > ... > > > > > data is the whole file, but 'less' gives only the two lines... > > > > From this statement (that you are using less), it appears that you are > > > redirecting sys.stdout to a file or similar - if that is the case, you > > > may need to flush or close the output file before it picks up any > > > changes. > > It's not a redirect to a file. Fuse calls the 'read' function on the > class, the read function does a 'return' of the data, and fuse passes > the data up through the OS layer to be the result of the 'read' call > made by less. > > If you don't know what a fuse file system is, this all gets very confusing :) > > > Yes, I did try a flush() and close on the file which is read, but the > > result is the same. I think when a read comes in fuse redirecting the > > actual path (original file) to some other file for reading causes some > > issues like this. It would be really helpful if someone help me clear > > this issue. The getattr() calls are actually called upon the original > > file (doing an os.lstat()). Does this make any effect on the 'less' > > output ? > > I'm afraid we are getting beyond my level of fuse-foo here. You'd > probably be better off finding a fuse or even fuse-python mailing list > and trying there. > > If it were me, I'd start logging everything I could (take a look at > Python's 'logging' module to help you make that easy), and twidling > things. What happens if you change what gets returned to lstat? > What happens for various sizes and contents of the '0' file? What > happens if you use 'cat -v' or hexdump instead of less to read the file? > Run experiments until you gather enough clues to make a guess as to what > is going on, then test your theory. Repeat until success :) > > -- > R. David Murray http://www.bitdance.com
Thanks Murray, for your valuable opinions and suggestions. I'll try to log everything from now on and find out what happens inside. :) Surely I'll let you guys know what happened.. -- http://mail.python.org/mailman/listinfo/python-list
