On 06/16/2009 09:32 PM, Jamie Lokier wrote:
Avi Kivity wrote:
Another issue is enumeration. Guests will present their devices in the
order they find them on the pci bus (of course enumeration is guest
specific). So if I have 2 virtio controllers the only way I can
distinguish between them is using their pci slots.
virtio controllers really should have a user-suppliable string or UUID
to identify them to the guest. Don't they?
virtio controllers don't exist. When they do, they may have a UUID or
not, but in either case guest infrastructure is in place for reporting
the PCI slot, not the UUID.
virtio disks do have a UUID. I don't think older versions of Windows
will use it though, so if you reorder your slots you'll see your drive
letters change. Same with Linux if you don't use udev by-uuid rules.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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