9567f3ba1f
Currently, firmware selection is performed as part of the domain startup process. This mostly works fine, but there's a significant downside to this approach: since the process is affected by factors outside of libvirt's control, specifically the contents of the various JSON firmware descriptors and their names, it's pretty much impossible to guarantee that the outcome is always going to be the same. It would only take an edk2 update, or a change made by the local admin, to render a domain unbootable or downgrade its boot security. To avoid this, move firmware selection to the postparse phase. This way it will only be performed once, when the domain is first defined; subsequent boots will not need to go through the process again, as all the paths that were picked during firmware selection are recorded in the domain XML. Care is taken to ensure that existing domains are handled correctly, even if their firmware configuration can't be successfully resolved. Failure to complete the firmware selection process is only considered fatal when defining a new domain; in all other cases the error will be reported during startup, as is already the case today. Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser
General Public License, version 2.1 (or later). Some parts of the code
that are not part of the C library may have the more restrictive GNU
General Public License, version 2.0 (or later). See the files
COPYING.LESSER and COPYING for full license
terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: