Hi
I’m developing a ScsiPort driver for NT4.
When I activate the Disk Administrator and assign a drive letter to
a partition of a disk (a device of the driver),I receive a device control
request IRP with IoControlCode == 0x66001b.
Does anybody knows what code is it, and who sends it?
Thanks
Miki
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Here’s the forwarded message previously posted in ntfsd list.
Hope this helps,
Niraj
This IOCTL value is declared in ntddft.h (part of the standard DDK and
hence, at least as far as file systems are concerned, it is documented
Decoding the information (using our very own IOCTL decoder from our web
site) I note that this must be:
CTL_CODE( FTTYPE, 6, METHOD_NEITHER, FILE_ANY_ACCESS )
Hence, from ntddft.h, this is:
FT_BALANCED_READ_MODE
Thus, the file system above your storage driver is asking you to balance
read requests across the mirror set. Presumably you are returning
something that the FSD above doesn’t expect which is why the call fails.
Regards,
Tony
Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com
Specializing in consulting, development, and training for Windows NT
systems software, notably file systems and device drivers.
-----Original Message-----
From: xxxxx@techunix.technion.ac.il
[mailto:xxxxx@techunix.technion.ac.il]
Sent: Saturday, November 17, 2001 4:00 PM
To: NT Developers Interest List
Subject: [ntdev] unknown IoControlCode
Hi
I’m developing a ScsiPort driver for NT4.
When I activate the Disk Administrator and assign a drive letter to
a partition of a disk (a device of the driver),I receive a device control
request IRP with IoControlCode == 0x66001b.
Does anybody knows what code is it, and who sends it?
Thanks
Miki
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Some undocumented IOCTL for FTDISK (software RAID).
Max
----- Original Message -----
From:
To: “NT Developers Interest List”
Sent: Sunday, November 18, 2001 12:00 AM
Subject: [ntdev] unknown IoControlCode
> Hi
> I’m developing a ScsiPort driver for NT4.
> When I activate the Disk Administrator and assign a drive letter to
> a partition of a disk (a device of the driver),I receive a device control
> request IRP with IoControlCode == 0x66001b.
> Does anybody knows what code is it, and who sends it?
>
> Thanks
> Miki
>
> —
> You are currently subscribed to ntdev as: xxxxx@storagecraft.com
> To unsubscribe send a blank email to leave-ntdev-$subst(‘Recip.MemberIDChar’)@lists.osr.com
>
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