[PATCH] NVMe: Fail SCSI->NVMe translation for UNMAP when anchor is set

[Matthew Wilcox]

On Wed, Jun 18, 2014 at 03:51:52PM +0000, Mayes, Barrett N wrote:
> > On the one hand, it says that ANC_SUP shall be set to 0.  
> 
> LSI proposed the following and asked for feedback by June 9.  I don't recall seeing any comments to this on the public reflector.
> 
> ANC_SUC
> Shall be set to 0, to indicate that setting the ANCHOR bit in UNMAP is not supported if the namespace is not resource or thin provisioned.
> Shall be set to 1, to indicate that setting the ANCHOR bit in UNMAP is supported if the namespace is resource provisioned. May be set to 1 if the namespace is thin provisioned.

Thanks!  Just found that unread email ;-)

I'm not sure about Guy's reasoning that NVMe supports three different
provisioning models like SCSI does.  Should probably take this to the
NVMe mailing list now ...