[dm-devel] Re: [PATCH 0/7] scsi_dh framework update take #2

[Chandra Seetharaman]

Hi Hannes,

I looked at the patches except 3, 4 and 5 (as I don't have context
knowledge).

Thanks,

chandra
On Tue, 2008-05-20 at 16:04 +0200, Hannes Reinecke wrote:
> Hi James,
> 
> this is the second repost of my patchset to update the scsi_dh
> infrastructure. It includes the comments by Chandra.
> 
> It's based on the current scsi-misc tree.
> 
> Main features of the patchset are:
> - Use a single callback for the notifier chain
> - Merge all device maps into a single list,
>  which will be scanned by a generic function
> - Add a sysfs attribute 'dh_state' for each sdev
> - Add a generic SPC-3 ALUA device handler
> - Update device handlers to check if the
>  device actually supports this handler.
>  When attaching manually we are able to attach
>  to basically any device, so we have to make sure
>  that the device handler is actually supported.
> - Manually attach a device when a hardware handler
>  is specified; this allows multipath to override
>  the built-in hardware table.
> - Update dm-multipath to explicitly attach to
>  the specified device handler. This allows
>  overriding of the built-in table by the
>  multipath values.
> 
> As per usual, comment etc are welcome.
> 
> Cheers,
> 
> Hannes