Change network mapped drive to a virtual local HDD drive

NTFSD
1

Hi all,

I am studying a request to change a network mapped drive to a virtual local HDD drive.
I studied Rdr2 model in IFS. I found it seems impossible to transform all the network
mapped drive’s requests to a virtual local disk. The Rdr2 model is so complex.

I wonder if this target is possible or not.
Any clue is appreciated, thanks.

Jeffrey Ren

2

Hi Jeffrey,
I had done some evaluation of this aspect though didn’t go in much
details. Some important things
you may need to consider is support a local disk mount process that can
mount your networked disk. Next for a start passes all the request that
you receive locally to over to the rdr(it supports a lot of them). For
all those request that are not supported by rdr and those that are
necessary for the local volume you might want to add support for them. I
will see if I still have those list of IOCTLs with me and post them.

Hope this helps your case

-Mehtab.
VERITAS India Pvt Ltd

Jeffrey Ren wrote:

Hi all,
I am studying a request to change a network mapped drive to a virtual
local HDD drive.
I studied Rdr2 model in IFS. I found it seems impossible to transform
all the network
mapped drive’s requests to a virtual local disk. The Rdr2 model is so
complex.
I wonder if this target is possible or not.
Any clue is appreciated, thanks.
Jeffrey Ren
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3

Dear Mehtab,

Thanks. I ever used FileMon to check the mapped network drive.
I found its IOCTLs are so different from the local drive.
It seems that no direct IOCTLs interface info can be found.
And it is really a question about how to mount.
Need I write a single file system? I think a general disk layer is not enough.

Jeffrey Ren

----- Original Message -----
From: Mehtab
To: File Systems Developers
Sent: Wednesday, December 11, 2002 2:39 PM
Subject: [ntfsd] Re: Change network mapped drive to a virtual local HDD drive

Hi Jeffrey,
I had done some evaluation of this aspect though didn’t go in much details. Some important things
you may need to consider is support a local disk mount process that can mount your networked disk. Next for a start passes all the request that you receive locally to over to the rdr(it supports a lot of them). For all those request that are not supported by rdr and those that are necessary for the local volume you might want to add support for them. I will see if I still have those list of IOCTLs with me and post them.

Hope this helps your case

-Mehtab.
VERITAS India Pvt Ltd

Jeffrey Ren wrote:

Hi all,

I am studying a request to change a network mapped drive to a virtual local HDD drive.
I studied Rdr2 model in IFS. I found it seems impossible to transform all the network
mapped drive’s requests to a virtual local disk. The Rdr2 model is so complex.

I wonder if this target is possible or not.
Any clue is appreciated, thanks.

Jeffrey Ren

4

You cannot. Local drivers are block devices available sector-wise. SMB protocol does not allow you to work sector-wise with a server’s drive.
Forget this idea and use the usual RDR’s network drives.

Max

----- Original Message -----
From: Jeffrey Ren
To: File Systems Developers
Sent: Wednesday, December 11, 2002 7:49 AM
Subject: [ntfsd] Change network mapped drive to a virtual local HDD drive

Hi all,

I am studying a request to change a network mapped drive to a virtual local HDD drive.
I studied Rdr2 model in IFS. I found it seems impossible to transform all the network
mapped drive’s requests to a virtual local disk. The Rdr2 model is so complex.

I wonder if this target is possible or not.
Any clue is appreciated, thanks.

Jeffrey Ren

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5

The only way to do this is to do a virtual disk from a file located on the
network storage. I think you can buy something like that, though I don’t
remember who sells it.

Phil

–
Philip D. Barila
Seagate Technology, LLC
(720) 684-1842

“Jeffrey Ren” wrote in message
news:xxxxx@ntfsd…
Hi all,

I am studying a request to change a network mapped drive to a virtual local
HDD drive.
I studied Rdr2 model in IFS. I found it seems impossible to transform all
the network
mapped drive’s requests to a virtual local disk. The Rdr2 model is so
complex.

I wonder if this target is possible or not.
Any clue is appreciated, thanks.

Jeffrey Ren

6

Hi Mehtab, Maxim & Phil,

Thank you very much for your answers!

Jeffrey Ren

----- Original Message -----
From: “Phil Barila”
Newsgroups: ntfsd
To: “File Systems Developers”
Sent: Thursday, December 12, 2002 1:02 AM
Subject: [ntfsd] Re: Change network mapped drive to a virtual local HDD drive

> The only way to do this is to do a virtual disk from a file located on the
> network storage. I think you can buy something like that, though I don’t
> remember who sells it.
>
> Phil
>
> –
> Philip D. Barila
> Seagate Technology, LLC
> (720) 684-1842
>
>
> “Jeffrey Ren” wrote in message
> news:xxxxx@ntfsd…
> Hi all,
>
> I am studying a request to change a network mapped drive to a virtual local
> HDD drive.
> I studied Rdr2 model in IFS. I found it seems impossible to transform all
> the network
> mapped drive’s requests to a virtual local disk. The Rdr2 model is so
> complex.
>
> I wonder if this target is possible or not.
> Any clue is appreciated, thanks.
>
> Jeffrey Ren