shutil.copy2 error

Horse jbuturff at gmail.com
Tue Sep 25 02:49:11 CEST 2007


On Sep 24, 6:34 pm, Karthik Gurusamy <kar1... at gmail.com> wrote:
> On Sep 24, 7:34 am, Horse <jbutu... at gmail.com> wrote:
>
>
>
> > I've written a python script that copies a nightly Oracle backup file
> > to another server.  Every couple days, the script fails with this
> > error message:
>
> > Error copying Q:/Oradata/GISPROD/Backups/3UISN35R_1_1 to s:/gisprod/
> > backups/3UISN35R_1_1
> > [Errno 22] Invalid argument
>
> > Here's the code for the function I'm running.  The path names are all
> > correct, and it works *most of the time*.  It only fails about once or
> > twice a week.  Anyone know where I can get more info on this "errno 22
> > invalid argument"?
>
> > def CopyNewFiles(SOURCE_DIR, DEST_DIR):
> >     global STATUS
> >     try:
> >         os.chdir(SOURCE_DIR)
> >         for x in os.listdir(SOURCE_DIR):
> >             int_time = os.stat(x)[stat.ST_CTIME]
> >             str_time = time.ctime(int_time)
> >             if datetime.date.fromtimestamp(int_time + 0.00) >
> > YESTERDAY:
> >                 try:
> >                     DEST_FILE = os.path.join(DEST_DIR, x)
> >                     logfile.write("     Copying " + SOURCE_DIR + x + "
> > to " + DEST_FILE + "\n")
> >                     logfile.flush()
> >                     if not os.path.isfile(DEST_FILE):
> >                         shutil.copy2(x, DEST_FILE)
>
> I'm not sure of the error; but one possibility is that the source-
> directory contents may be modified by some other process, while you
> are looping here copying one-by-one the files.
>
> So a file 'x' could be present at the time you enter loop, but gone by
> the time you try the shutil.copy2. Again this is just a guess...
>
> Yet another possibility is 'x' is not a regular file (say in unix it
> could be a named pipe).. you can try adding a check for x (like
> os.path.isfile(x)) and copy only regular files.
>
> Karthik
>

Thanks for the ideas, I will look into if there is anything else using
these files (maybe a system level backup they hadn't told me
about??).  Otherwise, these files are perfectly valid, I can go back
on the ones that error and manually copy them by hand to the
destination folder.  I should've mentioned earlier, but this is
running on a windows 2000 system, and the destination folder is a
samba share on a Linux server.




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