RE: [PATCH 1/1] Drivers: scsi: storvsc: Don't pass ATA_16 commandto the host

[KY Srinivasan]

> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx]
> Sent: Sunday, March 04, 2012 4:12 AM
> To: KY Srinivasan
> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> devel@xxxxxxxxxxxxxxxxxxxxxx; virtualization@xxxxxxxxxxxxxx; ohering@xxxxxxxx;
> jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx;
> Haiyang Zhang
> Subject: Re: [PATCH 1/1] Drivers: scsi: storvsc: Don't pass ATA_16 command to
> the host
> 
> On Fri, Mar 02, 2012 at 12:49:07PM -0800, K. Y. Srinivasan wrote:
> > Windows hosts don't handle the ATA_16 command; don't pass it to the host.
> 
> Most devices don't handle it, and answer with and unsupported opcode
> sense reason.  If hyperv iis buggy enough to crap out on it please add
> a comment explaining that.

The host does not "crap out", it does return an error code but it is not "unsupported opcode".
The sense reason that comes back is a generic error SRB_STATUS code. It is easier for me to filter the
command on the outgoing side as opposed to dealing with a generic error code that is coming back from
the host.

Regards,

K. Y 

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