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From "Dennis E. Hamilton (JIRA)" <>
Subject [jira] [Updated] (COR-21) Extracting Externals Problems on Shared Drives
Date Sat, 10 Jan 2015 16:42:34 GMT


Dennis E. Hamilton updated COR-21:
    Attachment: Extract-2015-01-10-0821-ZipFolders.png

The file Extract-2015-01-10-0821-ZipFolders.png is a WInZip scan of

Notice how the files are named within the Zip folder.

It happens that there are no directories inside a Zip.  The Zip uses full path names on its
The entries shown that appear to be for directories are special entries that are generally
only used on *nix systems to set directory permissions.  These are ignored on Windows (and
Windows will not create an empty directory from a Zip.)

There are many Zip-creating utilities that make these folder entries for no particular reason,
but they are in there.  

The test output, which is what this is, lists the contents of the Zip in the order in which
it finds the items. 

The WinZip utility I am using does not show finer detail when it tests a Zip.  7-zip provides
even less information.  I think part of the problem being seen is in here, but it is not clear
exactly what it is, since the other zip downloads for the external libraries also contain
directory entries within them.  

> Extracting Externals Problems on Shared Drives
> ----------------------------------------------
>                 Key: COR-21
>                 URL:
>             Project: Corinthia
>          Issue Type: Bug
>         Environment: Microsoft Windows connection to shared drives
>            Reporter: Dennis E. Hamilton
>            Priority: Minor
>              Labels: Windows, download, scripts, sharedstorage
>         Attachments: Extract-2015-01-09-1505-XPtoDitto.png, Extract-2015-01-09-1511-Astraendo2toDitto.png,
Extract-2015-01-09-1523-VW10toZ.png, Extract-2015-01-10-0813-FolderAttributes.png, Extract-2015-01-10-0821-ZipFolders.png,
> Peter reported failures of the extract_downloads script when operating on a share from
within a Windows 7 VMware Guest.
> A similar problem has been replicated with a Windows 10 Guest on Hyper-V.
> It smells like some sort of race condition.  
> Some use on shared drives work, others fail.

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