Cache map over 4 tera bytes

NTFSD
1

CcInitializeCacheMap() fails, to raise exception(code == 0xC0000040),
if file sizes are specified as over 0x0000040000000000.

Is it the W2k specific limitation?

–
Takumi Nakamura
mailto:xxxxx@chapuni.com http://chapuni.com/

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2

DAMN!

Jamey Kirby
StorageCraft, inc.
xxxxx@storagecraft.com
www.storagecraft.com

----- Original Message -----
From: “Takumi Nakamura”
To: “File Systems Developers”
Sent: Monday, August 20, 2001 9:33 AM
Subject: [ntfsd] Cache map over 4 tera bytes

> CcInitializeCacheMap() fails, to raise exception(code == 0xC0000040),
> if file sizes are specified as over 0x0000040000000000.
>
> Is it the W2k specific limitation?
>
>
>
> –
> Takumi Nakamura
> mailto:xxxxx@chapuni.com http://chapuni.com/
>
> —
> You are currently subscribed to ntfsd as: xxxxx@storagecraft.com
> To unsubscribe send a blank email to leave-ntfsd-$subst(‘Recip.MemberIDChar’)@lists.osr.com

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3

Is that an actual cutoff or just a size you see fail? Which SPs, if any,
are on this machine?

-----Original Message-----
From: Takumi Nakamura [mailto:xxxxx@chapuni.com]
Sent: Monday, August 20, 2001 9:33 AM
To: File Systems Developers
Subject: [ntfsd] Cache map over 4 tera bytes

CcInitializeCacheMap() fails, to raise exception(code == 0xC0000040), if
file sizes are specified as over 0x0000040000000000.

Is it the W2k specific limitation?

–
Takumi Nakamura
mailto:xxxxx@chapuni.com http://chapuni.com/

You are currently subscribed to ntfsd as: xxxxx@windows.microsoft.com To
unsubscribe send a blank email to leave-ntfsd-$subst(‘Recip.MemberIDChar’)@lists.osr.com

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4

Excuse me, I cannot examine your advice till the next day,
since I’m at home and go to bed soon…

On Mon, 20 Aug 2001 09:48:55 -0700
“Daniel Lovinger” wrote:

> Is that an actual cutoff or just a size you see fail? Which SPs, if any,
> are on this machine?

I am using;

* Windows 2000 Professional(Japanese) with SP2(2195)
* 80MB phys memory on VMware-2.0.4/Linux

I can try without VMware, but stand-alone, in the next day.

It seems to fail as not 0x000003FF00000000 but 0x000003FFFFFF0000.

I guess, your saying, that is not a specific limitation.

Thanks.

–
Takumi Nakamura
mailto:xxxxx@chapuni.com http://chapuni.com/

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5

I can confirm that limit at 4TB-64KB. This may be addressed in a future
release and/or SP of Windows, but you will see the same limit in the
client release of Windows XP.

-----Original Message-----
From: Takumi Nakamura [mailto:xxxxx@chapuni.com]
Sent: Monday, August 20, 2001 12:04 PM
To: File Systems Developers
Subject: [ntfsd] Re: Cache map over 4 tera bytes

Excuse me, I cannot examine your advice till the next day,
since I’m at home and go to bed soon…

On Mon, 20 Aug 2001 09:48:55 -0700
“Daniel Lovinger” wrote:

> Is that an actual cutoff or just a size you see fail? Which SPs, if
any,
> are on this machine?

I am using;

* Windows 2000 Professional(Japanese) with SP2(2195)
* 80MB phys memory on VMware-2.0.4/Linux

I can try without VMware, but stand-alone, in the next day.

It seems to fail as not 0x000003FF00000000 but 0x000003FFFFFF0000.

I guess, your saying, that is not a specific limitation.

Thanks.

–
Takumi Nakamura
mailto:xxxxx@chapuni.com http://chapuni.com/

—
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6

Daniel,

I understand the implementation on my fsd is not practical but ideal.

You say, the current version of NTOSes has a specific limitation, even
if the client version of XP.

On Thu, 23 Aug 2001 15:20:58 -0700
“Daniel Lovinger” wrote:

> I can confirm that limit at 4TB-64KB. This may be addressed in a future
> release and/or SP of Windows, but you will see the same limit in the
> client release of Windows XP.

I hope the server version of XP and future SPes will have no limitation,
because volumes over TB may be often used by consumer in future.

Thank you,

–
Takumi Nakamura
mailto:xxxxx@chapuni.com http://chapuni.com/

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