Re: Strange IO Error when extracting zips to a network location

Hari Sekhon wrote:
Hi,
I've written a script to run on windows to extract all zips under a
given directory path to another directory path as such:

python extractzips.py <fetch all zips under this dir> <put all extracted
files under this dir>

The purpose of this script is to retrieve backup files which are
individually zipped under a backup directory tree on a backup server.

This scripts works nicely and has input validation etc, exiting
gracefully and telling you if you gave a non existent start or target
path...

When running the script as follows

python extractzips.py \\backupserver\backupshare\machine\folder d:\unziphere

the script works perfectly, but if I do

python extractzips.py \\backupserver\backupshare\machine\folder
\\anetworkmachine\share\folder

then it unzips a lot of files, recreating the directory tree as it goes
but eventually fails with the traceback:

File "extractzips.py", line 41, in zipextract
outfile.write(zip.read(x))
IOError: [Errno 22] Invalid argument


But I'm sure the code is correct and the argument is passed properly,
otherwise a hundred files before it wouldn't have extracted successfully
using this exact same piece of code (it loops over it). It always fails
on this same file every time. When I extract the same tree to my local
drive it works fine without error.

I have no idea why pushing to a network share causes an IO Error,
shouldn't it be the same as extracting locally from our perspective?

It looks like
http://support.microsoft.com/default.aspx?scid=kb;en-us;899149 is the
answer.

.

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