Python os.rename if file system is full

Question

I'm asking this beacause there's no way to try it myself (if there's one share it please (:).

I'm doing some file handling with Python os library, specifically file moving/renaming with os.rename().

Python docs explains some of the exceptions this function might raise here , but do not say anything about a full file system case. My guess is it raises an IOError, is this right?

Cheers.

Answer 1

In practice this should rarely come up, but if you want to test I'd recommend creating a small file system (I don't know what OS you are on, but this could be on a virtual partition, a RAM disk, a flash drive, etc.) and loading it up with garbage files to see what happens. Something like this maybe:

aBigNumber = 100000000000000000000000000000000
counter = 0
while (True):
    counter += 1
    anotherFile = open(`counter` + ".txt", "wb")
    anotherFile.write("0" * aBigNumber)
    anotherFile.close()

When you get an exception, you should be able to verify that the disk is full and then you'll know what kind of error to expect.

Answer 2

You can test it by filling up a small partition and then try the file operations on the filled filesystem. On *nix systems you can mount a tmpfs; for windows maybe use a usb stick.