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Hi Daniel,

For now (IceHouse), it's not possible to boot from iso and attach volume
after boot. Libvirt present ISO disk via an IDE controller (/dev/hda)
and new volume try to be added as IDE too (/dev/hdb).

Do you mean that with the new block device mapping code, we will be able
to boot from ISO (/dev/hda) and add a new SATA volume (/dev/sda)?

-- 
Jean-Daniel

> On Mon, Jul 28, 2014 at 09:30:24AM -0700, Vishvananda Ishaya wrote:
> > I think we should discuss adding/changing this functionality. I have had
> > many new users assume that booting from an iso image would give them a
> > root drive which they could snapshot. I was hoping that the new block
> > device mapping code would allow something like this, but unfortunately
> > there isn’t a way to do it there either. You can boot a flavor with an
> > ephemeral drive, but there is no command to snapshot secondary drives.
>
>
> The new block device mapping code is intended to ultimately allow any
> disk configuration you can imagine, so if a desirable setup with CDROM
> vs disks does not work, do file a bug about this because we should
> definitely address it.
>
> Regards,
> Daniel
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