Re: [Xen-devel] [RFC][PATCH] Enhance XenAPI for pvSCSI

[Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>]

Hi,

Masaki Kanno wrote:
> Hi,
> 
> I would like to enhance XenAPI for pvSCSI. 
> At the beginning, I updated only the document of XenAPI.  I'm going 
> to implement XenAPI of pvSCSI along the document.  Could you comment?
> 
> The following classes and RPCs are added by the enhancement. 
>  Classes:
>   - VSCSI class
>      This is a class for virtual SCSI devices.

It's nice to keep xen-api updated with new features :-)
One thing I want to point out is about the class name.
I think 'DSCSI' (direct scsi) is appropriate rather than 'VSCSI',
because pvSCSI driver doesn't really provide virtual scsi luns but
passes through scsi commands to real scsi luns, as far as I understand.

Regards,
-- Yosuke Iwamatsu

>   - PSCSI class
>      This is a class for physical SCSI devices.
> 
>  RPCs:
>   - VSCSI class
>    -- get_all
>        A list of all VSCSIs known to the system is gotten.
>    -- get_uuid
>        An UUID of the VSCSI is gotten.
>    -- get_VM
>        A VM ref of the VSCSI is gotten.
>    -- get_PSCSI
>        A PSCSI ref of the VSCSI is gotten.
>    -- get_virtual_host
>        A virtual host number of the VSCSI is gotten.
>    -- get_virtual_channel
>        A virtual channel number of the VSCSI is gotten.
>    -- get_virtual_target
>        A virtual target number of the VSCSI is gotten.
>    -- get_virtual_lun
>        A virtual logical unit number of the VSCSI is gotten.
>    -- get_virtual_HCTL
>        A virtual HCTL (string of "<host>:<channel>:<target>:<lun>") 
>        of the VSCSI is gotten.
>    -- create
>        A new VSCSI instance is created.
>    -- destroy
>        The VSCSI instance is destroyed.
>    -- get_by_uuid
>        A VSCSI ref of the UUID is gotten.
>    -- get_record
>        A VSCSI record of the VSCSI is gotten.
> 
>   - PSCSI class
>    -- get_all
>        A list of all PSCSIs known to the system is gotten.
>    -- get_uuid
>        An UUID of the PSCSI is gotten.
>    -- get_host
>        A host ref of the PSCSI is gotten.
>    -- get_physical_host
>        A physical host number of the PSCSI is gotten.
>    -- get_physical_channel
>        A physical channel number of the PSCSI is gotten.
>    -- get_physical_target
>        A physical target number of the PSCSI is gotten.
>    -- get_physical_lun
>        A physical logical unit number of the PSCSI is gotten.
>    -- get_physical_HCTL
>        A physical HCTL (string of "<host>:<channel>:<target>:<lun>") 
>        of the PSCSI is gotten.
>    -- get_vendor_name
>        A vendor name of the PSCSI is gotten.
>    -- get_model
>        A model name of the PSCSI is gotten.
>    -- get_type_id
>        An ID of device types of the PSCSI is gotten. (If disk, the ID 
>        is 0.  If tape, the ID is 1.)
>    -- get_type
>        A device type string of the PSCSI is gotten.
>    -- get_sg_name
>        A SCSI generic (sg) device name of the PSCSI is gotten.
>    -- get_revision
>        A revision string of the PSCSI is gotten.
>    -- get_scsi_id
>        A SCSI ID string of the PSCSI is gotten. The string is a result 
>        of 'scsi_id -gu -s'.
>    -- get_scsi_level
>        A SCSI level of the PSCSI is gotten.
>    -- get_by_uuid
>        A PSCSI ref of the UUID is gotten.
>    -- get_record
>        A PSCSI record of the PSCSI is gotten.
> 
>   - VM class
>    -- get_VSCSIs
>        VSCSI refs of the VM are gotten.
> 
>   - host class
>    -- get_PSCSIs
>        PSCSI refs of the host are gotten.
> 
> 
> Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
> 
> Best regards,
>  Kan
> 
> 
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