Long ago we adapted to Linux kernel changes which inverted the behaviour of the conntrack --ctdir setting: commit a6a04ea47a8143ba46150889d8dae1c861df6389 Author: Stefan Berger <stefanb@us.ibm.com> Date: Wed May 15 21:02:11 2013 -0400 nwfilter: check for inverted ctdir Linux netfilter at some point (Linux 2.6.39) inverted the meaning of the '--ctdir reply' and newer netfilter implementations now expect '--ctdir original' instead and vice-versa. We check for the kernel version and assume that all Linux kernels with version 2.6.39 have the newer inverted logic. Any distro backporting the Linux kernel patch that inverts the --ctdir logic (Linux commit 96120d86f) must also backport this patch for Linux and adapt the kernel version being tested for. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Given our supported platform targets, we no longer need to consider a version of Linux before 2.6.39, so can drop support for the old direction behaviour. The test suite updates are triggered because that never probed for the ctdir direction, and so the iptables syntax generator unconditionally dropped the ctdir args. Reviewed-by: Laine Stump <laine@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@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: