Re: [Libvir] [PATCH] Block device and network stats (version 2)

[John Levon <levon movementarian org>]

On Tue, Aug 21, 2007 at 08:10:33AM -0400, Daniel Veillard wrote:

> > > The Xen impl as coded only works for disks named xvdN, because the code for
> > > calculating device ID assumes xvdN device numbering scheme:
> > > 
> > >     device = 202 * 256 + minor;
> > 
> > What's with device numbering at all? Must we really repeat this crazy
> > Linuxism from xend in libvirt :(
> 
>   Do you have an alternative ? Because this is commited in CVS and I 
> would like to get 0.3.2 rolled out ASAP ! So if you have a practical
> suggestion or a patch, please post it, I may delay the issue but
> just stating 'crazy Linuxism' without specifying why and how this can
> be fixed won't help.

I just checked it out, and it looks like it can be safely encapsulated
in this case. I was worried it would end up like xend but it seems we
can entirely wrap the knowledge of this to be Linux-only.

BTW I am a little concerned that we're re-implementing all this code
when libxenstat can do it. I already wrote this code once :)

apologies,
john