WinFS support for Alternate Data Streams (ADS)

Hi,

the WinFS SDK documentation states that..."If you attempt to copy this
text file to a "WinFS" store, you will receive the following error: The
file example.txt has extra information attached to it that might be
lost if you continue copying. The contents of the file will not be
affected...."

I have tested this, copying a file with ADS data to the WinFS store. No
warning No message appears during this operation.

Anyone can help? It really looks like WinFS does not support ADS, I
have tested it.

Best Regards,
Marc Ochsenmeier
www.ochsenmeier.de

Well, I just tested it, and beta 1 definitely does not support ADS. If you
access the store from the network share (and not the WinFS namespace
extension under My Computer), you will get the error message stated below.
If you then try to access the alternate stream you'll get a message "The
filename, directory name, or volume label syntax is incorrect." I thought
perhaps it was just the RsFx driver that didn't support the syntax, so I
copied an ADS file into WinFS using the namespace extension (which probably
uses RsFx still anyway), and it did not give me the error message, so I
copied the file back out to take a look at it. When I copied the file back
out, the ADS streams were gone. So, based on my tests too, it appears they
are not supported.

"marc" wrote:

> Hi,
>
> the WinFS SDK documentation states that..."If you attempt to copy this
> text file to a "WinFS" store, you will receive the following error: The
> file example.txt has extra information attached to it that might be
> lost if you continue copying. The contents of the file will not be
> affected...."
>
> I have tested this, copying a file with ADS data to the WinFS store. No
> warning No message appears during this operation.
>
> Anyone can help? It really looks like WinFS does not support ADS, I
> have tested it.
>
> Best Regards,
> Marc Ochsenmeier
> www.ochsenmeier.de
>
>

Yes,
We don't support ADS in WinFS Beta 1. We're considering doing this for
WinFS v1 based on customer requirements. More on this soon.

-Ben
Bgrol@microsoft.com [MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights



"Aaron Oneal" wrote:

> Well, I just tested it, and beta 1 definitely does not support ADS. If you
> access the store from the network share (and not the WinFS namespace
> extension under My Computer), you will get the error message stated below.
> If you then try to access the alternate stream you'll get a message "The
> filename, directory name, or volume label syntax is incorrect." I thought
> perhaps it was just the RsFx driver that didn't support the syntax, so I
> copied an ADS file into WinFS using the namespace extension (which probably
> uses RsFx still anyway), and it did not give me the error message, so I
> copied the file back out to take a look at it. When I copied the file back
> out, the ADS streams were gone. So, based on my tests too, it appears they
> are not supported.
>
> "marc" wrote:
>
> > Hi,
> >
> > the WinFS SDK documentation states that..."If you attempt to copy this
> > text file to a "WinFS" store, you will receive the following error: The
> > file example.txt has extra information attached to it that might be
> > lost if you continue copying. The contents of the file will not be
> > affected...."
> >
> > I have tested this, copying a file with ADS data to the WinFS store. No
> > warning No message appears during this operation.
> >
> > Anyone can help? It really looks like WinFS does not support ADS, I
> > have tested it.
> >
> > Best Regards,
> > Marc Ochsenmeier
> > www.ochsenmeier.de
> >
> >

It seems that WinFS Beta 1 has not included many of the great features of
the NTFS file system - hard links, reparse points, alternate / multiple data
streams.

I assume that you're going to have support for these? Otherwaise (eg, for
the metadata that is so much a part of the WinFS model) you'll really piss
off a lot of peope who use either the standard or extended property sheets,
or (like me) the ADS as a much more customizable target for complex, large
metadata.

What's the update on this? Can we expect some exploration on the team blog
"What's in Store?" ?

IL Thomas
GeoSciSoft - Perth, Australia

"Benjamin Grol [MSFT]" <BenjaminGrolMSFT@discussions.microsoft.com> wrote in
message news:C2823E0A-C371-4F56-8225-451500899579@microsoft.com...
> Yes,
> We don't support ADS in WinFS Beta 1. We're considering doing this for
> WinFS v1 based on customer requirements. More on this soon.
>
> -Ben
> Bgrol@microsoft.com [MSFT]
> This posting is provided "AS IS" with no warranties, and confers no rights
>
>
>
> "Aaron Oneal" wrote:
>
>> Well, I just tested it, and beta 1 definitely does not support ADS. If
>> you
>> access the store from the network share (and not the WinFS namespace
>> extension under My Computer), you will get the error message stated
>> below.
>> If you then try to access the alternate stream you'll get a message "The
>> filename, directory name, or volume label syntax is incorrect." I
>> thought
>> perhaps it was just the RsFx driver that didn't support the syntax, so I
>> copied an ADS file into WinFS using the namespace extension (which
>> probably
>> uses RsFx still anyway), and it did not give me the error message, so I
>> copied the file back out to take a look at it. When I copied the file
>> back
>> out, the ADS streams were gone. So, based on my tests too, it appears
>> they
>> are not supported.
>>
>> "marc" wrote:
>>
>> > Hi,
>> >
>> > the WinFS SDK documentation states that..."If you attempt to copy this
>> > text file to a "WinFS" store, you will receive the following error: The
>> > file example.txt has extra information attached to it that might be
>> > lost if you continue copying. The contents of the file will not be
>> > affected...."
>> >
>> > I have tested this, copying a file with ADS data to the WinFS store. No
>> > warning No message appears during this operation.
>> >
>> > Anyone can help? It really looks like WinFS does not support ADS, I
>> > have tested it.
>> >
>> > Best Regards,
>> > Marc Ochsenmeier
>> > www.ochsenmeier.de
>> >
>> >