Increase in disk size

NTDEV
1

Hi All,

Will NT/Win2k detect the increase in size of a SCSI disk? If it can, what
is the expected behavior from the SCSI Target?

Thanks and regards,
Jeyaram

2

Hi,
Win2k can detect the increase in size of the SCSI disk (virtual disk
concepts). The miniport can initiate this using the scsiportnotification
with rescan option.

Neela Syam Kolli.

-----Original Message-----
From: xxxxx@ctd.hcltech.com [mailto:xxxxx@ctd.hcltech.com]
Sent: Saturday, November 23, 2002 1:14 AM
To: NT Developers Interest List
Subject: [ntdev] Increase in disk size

Hi All,

Will NT/Win2k detect the increase in size of a SCSI disk? If it can, what
is the expected behavior from the SCSI Target?

Thanks and regards,
Jeyaram

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3

I’m not sure you’re correct about this. the miniport can indeed
initiate a rescan of the bus to find new or missing devices, but I don’t
believe any attempt is made to determine if the LUN sizes have changed.

I don’t believe Windows has any mechanism for automatically determining
that the size of a LUN has changed. There is an IOCTL that can be sent
(IOCTL_DISK_UPDATE_DRIVE_SIZE) which can be followed up by
IOCTL_DISK_GROW_PARTITION to extend the last partition on the drive.
Both are described in the DDK.

-p

-----Original Message-----
From: Kolli, Neela Syam [mailto:xxxxx@lsil.com]
Sent: Monday, November 25, 2002 7:07 AM
To: NT Developers Interest List
Subject: [ntdev] RE: Increase in disk size

Hi,
Win2k can detect the increase in size of the SCSI disk (virtual disk
concepts). The miniport can initiate this using the
scsiportnotification with rescan option.

Neela Syam Kolli.

-----Original Message-----
From: xxxxx@ctd.hcltech.com [mailto:xxxxx@ctd.hcltech.com]
Sent: Saturday, November 23, 2002 1:14 AM
To: NT Developers Interest List
Subject: [ntdev] Increase in disk size

Hi All,

Will NT/Win2k detect the increase in size of a SCSI disk? If it can,
what is the expected behavior from the SCSI Target?

Thanks and regards,
Jeyaram

You are currently subscribed to ntdev as: xxxxx@lsil.com
To unsubscribe send a blank email to %%email.unsub%%

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4

Thanks Peter and Syam for your suggestions.

Peter, the IOCTLs you have mentioned are available in NT? If not, doesn’t
NT support increase in LUN size?

Thanks and regards,
Jeyaram

5

which release do you mean by “NT”? Windows NT 4, win2k, winxp, ???

I believe they were put into win2k.

-p

-----Original Message-----
From: xxxxx@ctd.hcltech.com [mailto:xxxxx@ctd.hcltech.com]
Sent: Monday, November 25, 2002 9:45 PM
To: NT Developers Interest List
Subject: [ntdev] RE: Increase in disk size

Thanks Peter and Syam for your suggestions.

Peter, the IOCTLs you have mentioned are available in NT? If not,
doesn’t NT support increase in LUN size?

Thanks and regards,
Jeyaram

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