> -----Original Message-----
> From: Ashley Sheridan [mailto:[email protected]]
> Sent: Thursday, March 03, 2011 2:03 PM
> To: [email protected]
> Cc: [email protected]
> Subject: RE: [PHP] Check for open file
>
>
> As far as I was aware, if you're in the middle of writing to a file
> and another script was attempting to write to it, the OS would prevent
> that as you had an open lock on it.
>
> --
> Thanks,
> Ash
> http://www.ashleysheridan.co.uk
>
And as it turned out, that was not the case. I started copying a
200MiB file from my desktop machine onto the Samba share. While that was
copying, I got onto the server and tried to copy the file to /tmp and it
happily did that for me without any indication that it was still being
written to (which is was by the way.) So, that's not a good way of dealing
with this.
I think I'm going to have to go with a time delay function here ...
--
There are potential problems using timing delays, and networking compounds
them. It might be more robust to use some simple method outside of php to
indicate a file is busy being copied, like using a reserved extension for
the copy and then renaming to the proper filename after the copy is
complete, or copying to a temp directory and then moving the file to the
destination directory once copied (renames and moves take milliseconds).
Assuming you're able to automate the copy process.
Cheers
Arno
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