Comment 4 for bug 1612554

Some more testing:

I installed a virtualenv with python 2.7.12 and duplicity 0.7.09, but the problem still remains.

Then I ran the little test mentioned in https://bugs.python.org/issue27130 which shows that zlib has a problem zipping files > 4Gb:

When looking at the timestamps of the comments, it seems this issue was fixed after 2.7.12 came out, so it will probably be in the next release.

I am currently running a backup with all files >4Gb excluded to see if that completes OK.

---

$ python --version
Python 2.7.6

$ python -c "import zlib;zlib.crc32('a'*(1<<31 - 1))"

$ python -c "import zlib;zlib.crc32('a'*(1<<31))"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
OverflowError: size does not fit in an int

---

$ . venv.2.7.12/bin/activate

(venv.2.7.12) $ python --version
Python 2.7.12

(venv.2.7.12) $ python -c "import zlib;zlib.crc32('a'*(1<<31 - 1))"

(venv.2.7.12) $ python -c "import zlib;zlib.crc32('a'*(1<<31))"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
OverflowError: size does not fit in an int