Re: [Xen-users] Re: Raw Disk Image to domU

To:	"Ricardo Tiago" <rtiago@xxxxxxxxx>
Subject:	Re: [Xen-users] Re: Raw Disk Image to domU
From:	"Todd Deshane" <deshantm@xxxxxxxxx>
Date:	Tue, 27 May 2008 10:25:30 -0400
Cc:	xen-users@xxxxxxxxxxxxxxxxxxx
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Hi Ricardo,

> One thing that i don't understand is the difference of sda, xvda and when to
> use one or the other in the cfg.

This is starting to blur more and more. As I originally understood it,
sd* was for
SCSI and xvd* was for Xen block device. This would allow the guest to be given
a SCSI device and the the driver would be the standard SCSI driver when passed
sda and the xen blk driver when passed a xvd* device.

For the most part this is true in general, but for PV guests it seems that Xen
does a good job of using possibly the same driver (I am not actually 100%
sure of the current status). I think that specifying sd*, hd*, xvd* is
more important
for HVM guests, since these guests need to provide the drivers in way or another
themselves.

I would love if others could explain this with more authority and more
clearly...


> didn't previously noted but while the image boots fine, that are still some 
> errors..


> XENBUS: Device with no driver: device/vbd/51712
> XENBUS: Device with no driver: device/vif/0

Did you have problems with anything not working?

Does the disk and network work?

I have noticed errors similar to this, especial for the console, and the console
still works.


Cheers,
Todd

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Re: [Xen-users] Re: Raw Disk Image to domU