RE: [PATCH] nvme-core: update NS Attr Changed AEN handling for ANA group

["Knight, Frederick" <Frederick.Knight@netapp.com>]

Then I have no idea what you're asking.

Creating an ANA group does not change the ANA Log page, so there is NO AEN.

When a namespace is created (and contained in an ANA Group), the act of creating that namespace results in a change to the ANA Log page - therefore AEN.  BUT, the text you site specifically says, ONLY the Namespace Attribute Changed event is sent, and the ANA Log page change AEN shall not be sent when this happens.  This is what is described when either the ANA group already exists (and the new namespace is added to it), or when the ANA group does not exist, and the new ANA group along with the new namespace are both added to the ANA log page at the same time.

If you are not asking for an AEN when an ANA group is created, then what are you asking for?  Because I clearly don't understand your ask.

	Fred

-----Original Message-----
From: hch@lst.de <hch@lst.de> 
Sent: Wednesday, December 9, 2020 2:28 AM
To: Knight, Frederick <Frederick.Knight@netapp.com>
Cc: Keith Busch <kbusch@kernel.org>; hch@lst.de; Meneghini, John <John.Meneghini@netapp.com>; George, Martin <Martin.George@netapp.com>; linux-nvme@lists.infradead.org; sagi@grimberg.me; Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH] nvme-core: update NS Attr Changed AEN handling for ANA group

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Fred, stop this bullshit now!  I'm sick and tired of you misrepresenting my opinion again and again despite me correcting you.  This is not a basis for productive work.

The only thing I requested is what is said in the document:

"A controller shall not send this event if:

  a) the change is due to the creation of a namespace (refer to section 5.20); or
  b) the change is due to the deletion of a namespace (refer to section 5.20),

as the Namespace Attribute Changed event is sent for these changes."

The Namespace Attribute Changed event has no way of notifying the host of a creation of new ANA group, so strangely interpreting that entirely different event to be part of the namespace creation does not make any sense whatsover.

Creating the group at the spec level is not due to creating a namespace.
That might be the interpretation of your management backend and is an ok implementation, but nothing in the spec implicitly creates groups as part of namespaces creation.

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