NVMe SCSI support

NVMe SCSI support

[Panah, Khosrow]

I noticed there is a development in process to support NVMe SCSI interface. Can anyone clarify as why Intel is supporting SCSI interface?
I have not been able to pull NVMe SCSI driver from Intel site. When I pull the latest driver, I get a driver that does not include support for "sg_ioctl". I would greatly appreciate if you could point me to where I can gain access to the source that includes above source version.

Thank you,
Khosrow

NVMe SCSI support

[Matthew Wilcox]

On Thu, Nov 01, 2012@06:36:41PM +0000, Panah, Khosrow wrote:
> I noticed there is a development in process to support NVMe SCSI
> interface. Can anyone clarify as why Intel is supporting SCSI interface?

It's not really an "Intel" thing, it's something I think that the NVMe
driver needs in order to be successful.  There are tools out there
which send SCSI commands to devices, and supporting those tools makes
it easier for people to transition from SCSI to NVMe.  There's precedent
for this; for example the Linux ATA driver translates SCSI commands into
ATA commands.

> I have not been able to pull NVMe SCSI driver from Intel site. When I

Do you mean from the infradead site?  That's not an Intel site (although
the owner does happen to work for Intel).  I used to host on kernel.org,
but since the break-in, I've hosted on infradead.org.

> pull the latest driver, I get a driver that does not include support for
> "sg_ioctl". I would greatly appreciate if you could point me to where
> I can gain access to the source that includes above source version.

I haven't accepted the patches into the driver yet, so there's nowhere
to pull them from.  You can apply the patches yourself if you want to
try them out.

NVMe SCSI support

[Panah, Khosrow]

Matthew,

Thank you for feedback. I will try to patch the driver.

Khosrow


-----Original Message-----
From: Matthew Wilcox [mailto:willy@linux.intel.com] 
Sent: Thursday, November 01, 2012 1:57 PM
To: Panah, Khosrow
Cc: linux-nvme at lists.infradead.org; Kong, Kwok
Subject: Re: NVMe SCSI support

On Thu, Nov 01, 2012@06:36:41PM +0000, Panah, Khosrow wrote:
> I noticed there is a development in process to support NVMe SCSI 
> interface. Can anyone clarify as why Intel is supporting SCSI interface?

It's not really an "Intel" thing, it's something I think that the NVMe driver needs in order to be successful.  There are tools out there which send SCSI commands to devices, and supporting those tools makes it easier for people to transition from SCSI to NVMe.  There's precedent for this; for example the Linux ATA driver translates SCSI commands into ATA commands.

> I have not been able to pull NVMe SCSI driver from Intel site. When I

Do you mean from the infradead site?  That's not an Intel site (although the owner does happen to work for Intel).  I used to host on kernel.org, but since the break-in, I've hosted on infradead.org.

> pull the latest driver, I get a driver that does not include support 
> for "sg_ioctl". I would greatly appreciate if you could point me to 
> where I can gain access to the source that includes above source version.

I haven't accepted the patches into the driver yet, so there's nowhere to pull them from.  You can apply the patches yourself if you want to try them out.