Re: [PATCH] hpsa: add support for legacy boards

[Hannes Reinecke <hare@suse.de>]

On 07/12/2017 09:11 AM, Christoph Hellwig wrote:
> On Tue, Jul 11, 2017 at 06:58:36PM +0300, Meelis Roos wrote:
>>> The 5i controller is probably too old for the hpsa driver to support. 
>>> The hpsa driver is looking for information to determine if the drive is online/offline and
>>> this information is not available.
>>>
>>> What was the original issue you were having with the cciss driver?
>>
>> Christoph Hellwig updated block layer with "block: Make most 
>> scsi_req_init() calls implicit" and at first try, cciss was left without 
>> the needed initialization. This caused OOPS in udev probing but the 
>> system worked. The issue was fixed by Christoph quickly.
> 
> The original patch is from Bart, but otherwise correct.
> 
>> But he suggested it might be worth trying hpsa driver instead of cciss, 
>> with a longer term goal to to move users of cciss over to hpsa if 
>> possible. Now that I have tested it, it seems not all older cards are 
>> supported in hpsa - it's more than ID-s and interrupt masks.
> 
> Seems like it.  And the idea behind this game is that we'd like to slowly
> get rid of old request_fn based drivers.  Given that hpsa supports very
> similar hardware cciss is a target for removal once that hardware is
> switched over.  But it seems like we'll need more work in this area..
> 
I'll give it a shot.
I seem to have an oldish cciss board floating about; let's see how far I
get with those.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
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