35966308b5
Commit 4f4c3b13 (v3.3) fixed an issue where performing cleanup of libvirt objects could sometimes lose error messages, by adding code to copy the libvirt error into last_error prior to cleanup paths. However, it caused a regression: on other paths, some errors are now printed twice, if libvirt still remembers in its thread-local storage that an error was set even after virsh cleared last_error. For example: $ virsh -c test:///default snapshot-delete test blah error: Domain snapshot not found: no domain snapshot with matching name 'blah' error: Domain snapshot not found: no domain snapshot with matching name 'blah' Fix things by telling libvirt to discard any thread-local errors at the same time virsh prints an error message (whether or not the libvirt error is the same as what is stored in last_error). Update the virsh-undefine testsuite (partially reverting portions of commit b620bdee, by removing -q, to more easily pinpoint which commands are causing which messages), now that there is only one error message instead of two. Signed-off-by: Eric Blake <eblake@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 2.1 (or later). See the files COPYING.LESSER
and COPYING for full license terms & conditions.
Installation
Libvirt uses the GNU Autotools build system, so in general can be built and installed with the usual commands. For example, to build in a manner that is suitable for installing as root, use:
$ ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ sudo make install
While to build & install as an unprivileged user
$ ./configure --prefix=$HOME/usr
$ make
$ make install
The libvirt code relies on a large number of 3rd party libraries. These will
be detected during execution of the configure script and a summary printed
which lists any missing (optional) dependencies.
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: