[nvmewin] Implementing a debug purpose Read/Write using IOCTL_SCSI_MINIPORT

[Sagi Bar]

Hello Alex,

Thank you for your answer.
I see that the driver has a readily implemented NVMePreparePRPs(...) so adding an extra command shouldn't be an issue.

I might need this feature in order to prevent the StorPort driver from dividing the request into smaller SRBs (debug purposes).

Thank you,


Sagi Bar
Test & Tools Staff FW Engineer
[cid:image001.png at 01CEA3CD.FE1957E0]
7 Atir Yeda St, Kfar - Saba 44425, Israel

sagi.bar at SanDisk.com<mailto:sagi.bar at SanDisk.com>

From: Alex Chang [mailto:Alex.Chang at pmcs.com]
Sent: Wednesday, July 23, 2014 2:35 AM
To: Sagi Bar; nvmewin at lists.openfabrics.org
Cc: Roman Goldshtein
Subject: RE: [nvmewin] Implementing a debug purpose Read/Write using IOCTL_SCSI_MINIPORT

Hi Sagi,

Yes, you're right that it's due to security reasons and, in addition, you may access the associated storage as a physical or formatted drive with Windows supported APIs for your debugging purposes, like IOMeter does.

Thanks,
Alex

From: nvmewin-bounces at lists.openfabrics.org<mailto:nvmewin-bounces at lists.openfabrics.org> [mailto:nvmewin-bounces at lists.openfabrics.org] On Behalf Of Sagi Bar
Sent: Tuesday, July 22, 2014 5:21 AM
To: nvmewin at lists.openfabrics.org<mailto:nvmewin at lists.openfabrics.org>
Cc: Roman Goldshtein
Subject: [nvmewin] Implementing a debug purpose Read/Write using IOCTL_SCSI_MINIPORT


Hello Guys,

I would like to implement a debug purpose flow of performing NVME disk IO bypassing the StorPort under Windows 8.1.

I thought about implementing it using "IOCTL_SCSI_MINIPORT" on host side and adding code under "NVM_WRITE/ NVM_READ" on the target side.

I wonder whether anyone here has done it before and can share insights.

Moreover, Is there any particular reason why NVME READ/WRITE commands are not implanted via IOCTL interface, except security ?

Thank you,

Sagi Bar
Test & Tools Staff FW Engineer
[cid:image001.png at 01CEA3CD.FE1957E0]
7 Atir Yeda St, Kfar - Saba 44425, Israel
sagi.bar at SanDisk.com<mailto:sagi.bar at SanDisk.com>


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