Our pvSCSI split driver worked well on NPIV environment

Our pvSCSI split driver worked well on NPIV environment

[Jun Kamada]

Hi all,

We have successfully made our pvSCSI split driver works on NPIV
environment. This means that each guest domain can exclusively use own
"logical" HBA  even if the host machine have only one "physical" HBA.
We believe that our pvSCSI split driver is useful on NPIV environment
and is needed for enterprise domain.

Following are evaluation environment. 

[Hardware]
Host machine：	Fujitsu PRIMERGY RX300 S3 (IA32 machine)
FC-Switch:	Fujitsu Eternus SN200 Model430
Storage:	Fujitsu Eternus 4000

[Software]
Xen			3.1
Linux Kernel：		2.6.18

Please refer following URL about the pvSCSI split driver.

http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00450.html
http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00451.html
http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00452.html
http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00453.html
http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00561.html

http://lists.xensource.com/archives/html/xen-devel/2007-08/msg00002.html

Best regards,

-----
Jun Kamada

Re: Our pvSCSI split driver worked well on NPIV environment

[Aaron Dailey]

Kamada-san and all,

We're also working on an NPIV driver for Solaris xVM (see
http://www.news.com/8301-13580_3-9778296-39.html for what xVM means).

I've looked at the pvSCSI split driver, and I think it's valuable for
both NPIV FibreChannel and standard SCSI environments. Especially with
NPIV though it will become valuable because we can dedicate one virtual
HBA to a DOMU, and use those devices as SCSI devices.

I see it as especially valuable for tape, but also for non standard SCSI
devices. Also some users may want to use it for disk instead of using
the block driver. For example, in Solaris, we can control write cache on
disk drives differently depending on SCSI status, information which
would be unavailable via block interface.

Regards,

Aaron

Jun Kamada wrote:
> Hi all,
>
> We have successfully made our pvSCSI split driver works on NPIV
> environment. This means that each guest domain can exclusively use own
> "logical" HBA  even if the host machine have only one "physical" HBA.
> We believe that our pvSCSI split driver is useful on NPIV environment
> and is needed for enterprise domain.
>
> Following are evaluation environment. 
>
> [Hardware]
> Host machine：	Fujitsu PRIMERGY RX300 S3 (IA32 machine)
> FC-Switch:	Fujitsu Eternus SN200 Model430
> Storage:	Fujitsu Eternus 4000
>
> [Software]
> Xen			3.1
> Linux Kernel：		2.6.18
>
> Please refer following URL about the pvSCSI split driver.
>
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00450.html
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00451.html
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00452.html
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00453.html
> http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00561.html
>
> http://lists.xensource.com/archives/html/xen-devel/2007-08/msg00002.html
>
> Best regards,
>
> -----
> Jun Kamada
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>   

Re: Our pvSCSI split driver worked well on NPIV environment

[Jun Kamada]

Hi Aaron-san,

Thank you for your interests to our pvSCSI split driver. We believe
that there are a lot of situations guest domain would like to issue
SCSI command.

In the near future, we will post the new version of pvSCSI driver
described below.

- Integrate source code of pure SCSI functions and FC transport layer
  functions
- Support reset function
- And fix some bugs


Thanks

kama@jp.fujitsu.com


On Tue, 18 Sep 2007 13:20:47 +0800
Aaron Dailey <Aaron.Dailey@Sun.COM> wrote:
> Kamada-san and all,
> 
> We're also working on an NPIV driver for Solaris xVM (see
> http://www.news.com/8301-13580_3-9778296-39.html for what xVM means).
> 
> I've looked at the pvSCSI split driver, and I think it's valuable for
> both NPIV FibreChannel and standard SCSI environments. Especially with
> NPIV though it will become valuable because we can dedicate one virtual
> HBA to a DOMU, and use those devices as SCSI devices.
> 
> I see it as especially valuable for tape, but also for non standard SCSI
> devices. Also some users may want to use it for disk instead of using
> the block driver. For example, in Solaris, we can control write cache on
> disk drives differently depending on SCSI status, information which
> would be unavailable via block interface.
> 
> Regards,
> 
> Aaron