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Re: Mount of VSS volumes (//?/GLOBALROOT/...) does not work


Jason Pyeron wrote:
-----Original Message-----
From: cygwin-owner at cygwin dot com
[mail to cygwin-owner at cygwin dot com] On Behalf Of Larry Hall (Cygwin)
Sent: Monday, May 11, 2009 11:53
To: cygwin at cygwin.com
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
<http://cygwin.com/acronyms/#PCYMTNQREAIYR>  Or, better yet, just eliminate
all these unneeded headers so there's no issue.

<snippage>

This is still a highly unusual situation from a POSIXy
point of view.
I'm not sure I want to slow down Cygwin for this any further. It
Could this be explained please?
The code in Cygwin to handle path conversion and "POSIXification" is very complex and is already a performance concern. Adding more code to this area to handle rare cases is not in the best interest of the entire Cygwin community, since it adds complexity and reduces performance of Cygwin as a whole. So we shy away from making changes in this area unless there's a definite need and an overall "win".

Hmm, could I get a primmer on where to look to understand more. I.E. which sources/functions.

<http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/cygwin/path.cc?rev=1.546&content-type=text/x-cvsweb-markup&cvsroot=src>


seems the ability to mount a shadow volume as a dos drive is sufficient for this kind of problem, isn't it?

I agree.
The dosdev.exe is no longer downloadable from Microsoft.
<http://blogs.msdn.com/adioltean/archive/2005/10/04/477164.aspx>

Sounds like if one couldn't find the prebuilt tool somewhere that it's not that hard to write one.

And maybe add it as a feature to mount....

I'm not sure if the idea of adding functionality to 'mount' that creates junctions of DOS devices in the Windows world makes sense to me. This seems like Windows-world functionality, since all of Windows would see the result and be able to take advantage of it. I'm guessing that your idea is to make this usage as seamless and simple as possible in Cygwin, which I can understand. But in my admittedly short time thinking about the idea, I'm personally hesitant to say this is obviously the right way to go. But I could be wrong and I don't think this should stop you or someone else from proposing specifics with a patch to 'mount' as it possible that I've missed a nice solution that addresses my concern.

--
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting annoying in email?

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