0ccceaa57c
The existing auto-align behavior for pSeries has the idea to alleviate user configuration of the NVDIMM size, given that the alignment calculation is not trivial to do (256MiB alignment of mem->size - mem->label_size value, a.k.a guest area). We align mem->size down to avoid end of file problems. The end result is not ideal though. We do not touch the domain XML, meaning that the XML can report a NVDIMM size 255MiB smaller than the actual size the guest is seeing. It also adds one more thing to consider in case the guest is reporting less memory than declared, since the auto-align is transparent to the user. Following Andrea's suggestion in [1], let's instead do an size alignment validation. If the NVDIMM is unaligned, error out and suggest a rounded up value. This can be bothersome to users, but will bring consistency of NVDIMM size between the domain XML and the guest. This approach will force existing non-running pSeries guests to readjust the NVDIMM value in their XMLs, if necessary. No changes were made for x86 NVDIMM support. [1] https://www.redhat.com/archives/libvir-list/2020-July/msg01471.html Suggested-by: Andrea Bolognani <abologna@redhat.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Signed-off-by: Michal Privoznik <mprivozn@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: