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.
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Daniel P. Berrangé dae16374dd nwfilter: spawn thread for reloading on firewalld trigger
When firewalld is restarted or has its rules reloaded, we trigger a
reload of the nwfilter driver. This is done directly in the main
event loop thread which is a bad idea.

In a previous commit we fixed a actual deadlock problem with the
virStateReload API, when triggered from SIGHUP:

commit 33c6eb9689
Author: Jim Fehlig <jfehlig@suse.com>
Date:   Thu Mar 8 15:04:48 2018 -0700

    libvirtd: fix potential deadlock when reloading

The same deadlock problem previously existed with the firewalld reload
trigger, however, today it is not quite so series. The QEMU driver uses
a private event thread for each VM, so the particular deadlock would
not occur. None the less during the time the filters are reloading all
use of the event loop is blocked, which prevents APIs being serviced.

Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2022-06-20 13:15:21 +01:00
.ctags.d maint: Add support for .ctags.d 2019-05-31 17:54:28 +02:00
.github/workflows Switch to new GitHub repo-lockdown configuration 2021-10-20 14:27:20 +01:00
.gitlab/issue_templates gitlab: issue_template: Remove labelling commands 2022-06-01 12:27:10 +02:00
build-aux syntax-check: Add check prohibiting remote reference to local file 2022-06-01 12:27:10 +02:00
ci ci: Move upstream QEMU integration test to Fedora 36 2022-06-09 14:41:44 +02:00
docs tools: add '--xpath EXPRESSION --wrap' args to all dumpxml commands 2022-06-20 10:40:45 +01:00
examples Introduce VIR_DOMAIN_RUNNING_POSTCOPY_FAILED 2022-06-07 17:40:20 +02:00
include include: Introduce typed params for virDomainSetIOThreadParams wrt pool size 2022-06-10 14:00:35 +02:00
po Translated using Weblate (Swedish) 2022-06-15 17:18:53 +02:00
scripts docs: Add HTML reference checker 2022-06-01 12:27:10 +02:00
src nwfilter: spawn thread for reloading on firewalld trigger 2022-06-20 13:15:21 +01:00
tests conf: cpu: Add <signature family=X model=X stepping=X/> 2022-06-16 12:12:45 -04:00
tools tools: add '--xpath EXPRESSION --wrap' args to all dumpxml commands 2022-06-20 10:40:45 +01:00
.ctags ctags: Generate tags for headers, i.e. function prototypes 2018-09-18 14:21:33 +02:00
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.gitlab-ci.yml gitlab: mark job dependencies as optional 2022-05-27 08:11:15 -04:00
.gitmodules gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
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AUTHORS.rst.in AUTHORS: change my (Nikolay Shirokovskiy) email 2022-04-06 11:00:53 +03:00
config.h configure: bump min required CLang to 6.0 / XCode 10.0 2022-01-17 10:44:29 +00:00
configmake.h.in meson: generate configmake.h 2020-08-03 09:26:48 +02:00
CONTRIBUTING.rst meson: adjust our documentation to mention meson instead of autoconf 2020-08-03 09:27:09 +02:00
COPYING
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
gitdm.config gitdm: add 'ibm' file 2019-10-18 17:32:52 +02:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in spec: Fix indentation 2022-06-13 09:09:35 -04:00
meson_options.txt meson: Introduce qemu_datadir option 2021-11-18 15:48:59 +01:00
meson.build Post-release version bump to 8.5.0 2022-06-01 09:30:38 +02:00
mingw-libvirt.spec.in rpm: fix mingw obsoletes lines 2021-08-02 13:47:20 +01:00
NEWS.rst NEWS: Add support for post-copy recovery 2022-06-07 17:40:21 +02:00
README.rst README: drop Travis CI badge 2020-08-03 15:08:28 +02:00
run.in run: gracefully handle SIGHUP, SIGQUIT, SIGTERM 2022-03-10 08:06:12 +00:00

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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:

https://libvirt.org

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:

Further details on contacting the project are available on the website:

https://libvirt.org/contact.html