Re: Is there any plan to support 64bit lun in mainline?

[Hannes Reinecke <hare@suse.de>]

On 10/12/2013 08:35 AM, Wangshen (C) wrote:
> Hello everyone,
> 
> My name is Wang Shen.
> I am developing some scsi devices in Linux needs 64bit lun.
> Now I am in trouble in scsi driver programming.
> 
> According to SAM-5, a LUN structure is 8 bytes long, but it is only 4 bytes long in kernel.
> In another word Linux kernel only supports single level LUN, except conglomerate LUN and Hierarchical LUN.
> In my project, we need support all of the LUN structures.
> 
> I find an archive mail on Tue, 19 Feb 2013 which discussed "scsi: 64-bit LUN support", but it just a patchset.
> 
> Is there any plan to merge this patchset to mainline?
> If there is a plan, Which version will support 64bit lun?

Yes, there is a plan. Sort of.

I have a patchset (basically an update from the original patches)
sitting here in my private repository.

However, there are two other patchsets pending (EH Deadline and
asynchronous command aborts), both of which have been tested
thoroughly _and_ have acked-by from various other parties.
None of these patchset had received any feedback from James
Bottomley, let alone any indication if or when they'll be merged.

So I stopped sending further patchsets, sensing some communication
breakdown on the line.

I try to excite some response from James B. next week in Edinburgh.
At the very least there'll be other persons with whom I'll be able
to discuss further steps.

And yes, this is slightly irritating.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@suse.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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