[libvirt] [PATCH] docs: mention bhyve SATA address changes in news.xml

[Roman Bogorodskiy]

  Andrea Bolognani wrote:

> On Sun, 2017-02-05 at 16:52 +0400, Roman Bogorodskiy wrote:
> [...]
> > +      <change>
> > +	<summary>
> > +          bhyve: change address allocation schema for SATA disks
> > +	</summary>
> 
> The indentation is all wrong, here and below. Please indent
> using only spaces and make sure the result matches existing
> entries; be also mindful of line length.

Oops, need to configure vim for proper indentation for these files.
Fixed.

> > +	<description>
> > +	  Previously, the bhyve driver assigned PCI addresses to SATA disks directly
> > +	  rather than assigning that to a controller and using SATA addresses for disks.
> > +          It was implemented this way because bhyve has no notion of an explicit SATA
> > +	  controller.
> 
> Aside: does this mean there is an implicit, default SATA
> controller? How would that work otherwise?

Sort of. I mean that there's no such thing as
'slot:func:controller:controller_id' + 'controller_id:disk' or
something like that, it's just disk
'slot:func:ahci-(hd|cd):image_path'.

> > However, this doesn't go inline with the internal libvirt model,
> 
> "However, as this doesn't match libvirt's understanding of
> disk addresses, [...]" or something along those lines.

Done.

> > +          it was changed for the bhyve driver to follow the common schema and
> > +	  have PCI addresses for SATA controllers and SATA addresses for disks. If you're having
> > +	  issues because of this, it's recommended to edit the domain's XML and remove
> > +	  <address type='xml'> from the <disk> elements with
> 
> s/xml/pci/ here, I assume.

Right, fixed.

> > +	  <target bus="sata"/> and let libvirt regenerate it properly.
> 
> s/"/'/g to match the above and what libvirt actually uses ;)

Done.

> -- 
> Andrea Bolognani / Red Hat / Virtualization

Roman Bogorodskiy
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