Re: Disk naming (Was Re: [Xen-devel] [PATCH] Guest boot loadersupport [1/2])

[Andrew Theurer <habanero@xxxxxxxxxx>]

Adam Heath wrote:

> On Thu, 14 Apr 2005, Gerd Knorr wrote:
>
>  
>
> > I think we should have our own xd virtual block devices for xen and
> > use them by default.  It's cleaner, and probably also has less
> > problems when using virtual disks and iSCSI at the same time ;)
> >
> > Using hd/sd instead probably is a useful option in some cases, I
> > wouldn't drop that altogether, but only use that if the user
> > explicitly asks for it.
> >    
> Or, implement a xen scsi host driver, that acts like a real scsi host
> controller, but instead imports virtual blocks.  This seems like the best of
> both worlds.
>
> Note, this is not a overlay system like is done currently, nor is it a block
> driver.
>
>
>  
There may already be something like this, the IBM virtual scsi 
server/client drivers in mainline kernel (used for para-virtualized 
POWER5 systems).  Might be worth looking at and modifying a bit to fit 
Xen's inter domain communication model.
-Andrew



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