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There are a few extra exceptions that weren't being accounted for when creating the alias for a controller. This resulted in 1) incorrect status XML, and 2) exceptions/printfs of what *should* have been directly available in the controller alias when constructing device commandline arguments: 1) The primary (and only) IDE controller on a 440FX machinetype is hardcoded to be "ide" in qemu. 2) The primary SATA controller on a 440FX machinetype is also hardcoded to be "ide" in qemu. 3) On machinetypes that don't support multiple PCI buses, the PCI bus is hardcoded in qemu to have the name "pci". 4) The first usb master controller is "usb", all others are the normal "usb%d". (note that usb controllers that are not a "master" will have the same index, and thus alias, as the master). We needed to pass in the full domainDef and qemuCaps in order to properly make the decisions about these exceptions.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>