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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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Jim Fehlig f035f53baa remote: Add libvirtd dependency to virt-guest-shutdown.target When restarting libvirt services and sockets and libvirt-guests.service is running, the latter will sometimes hang when trying to connect to libvirtd. Even though libvirt-guests has 'Wants=libvirtd.service' and 'After=libvirtd.service', we can see via journalctl that it is not shutdown before libvirtd when executing something like systemctl try-restart libvirtd.service libvirtd.socket \ libvirtd-ro.socket virtlockd.service virtlockd.socket \ virtlogd.service virtlogd.socket virt-guest-shutdown.target Oct 28 15:53:31 systemd[1]: Stopping Virtualization daemon... Oct 28 15:53:31 systemd[1]: libvirtd.service: Succeeded. Oct 28 15:53:31 systemd[1]: Stopped Virtualization daemon. Oct 28 15:53:31 systemd[1]: libvirtd-admin.socket: Succeeded. Oct 28 15:53:31 systemd[1]: Closed Libvirt admin socket. Oct 28 15:53:31 systemd[1]: Stopping Libvirt admin socket. Oct 28 15:53:31 systemd[1]: libvirtd-ro.socket: Succeeded. Oct 28 15:53:31 systemd[1]: Closed Libvirt local read-only socket. Oct 28 15:53:31 systemd[1]: Stopping Libvirt local read-only socket. Oct 28 15:53:31 systemd[1]: libvirtd.socket: Succeeded. Oct 28 15:53:31 systemd[1]: Closed Libvirt local socket. Oct 28 15:53:31 systemd[1]: Stopping Libvirt local socket. Oct 28 15:53:31 systemd[1]: Listening on Libvirt local socket. Oct 28 15:53:31 systemd[1]: Listening on Libvirt admin socket. Oct 28 15:53:31 systemd[1]: Listening on Libvirt local read-only socket. Oct 28 15:53:31 systemd[1]: virtlockd.socket: Succeeded. Oct 28 15:53:31 systemd[1]: Closed Virtual machine lock manager socket. Oct 28 15:53:31 systemd[1]: Stopping Virtual machine lock manager socket. Oct 28 15:53:31 systemd[1]: Listening on Virtual machine lock manager socket. Oct 28 15:53:31 systemd[1]: virtlogd.socket: Succeeded. Oct 28 15:53:31 systemd[1]: Closed Virtual machine log manager socket. Oct 28 15:53:31 systemd[1]: Stopping Virtual machine log manager socket. Oct 28 15:53:31 systemd[1]: Listening on Virtual machine log manager socket. Oct 28 15:53:31 systemd[1]: Stopping Suspend/Resume Running libvirt Guests... In this case, the try-restart command hung and libvirt-guests was stuck trying to connect to libvirtd. In the following case, the try-restart worked since libvirtd was started again before libvirt-guests was stopped! Oct 28 15:19:02 systemd[1]: Stopping Virtualization daemon... Oct 28 15:19:02 systemd[1]: Stopped Virtualization daemon. Oct 28 15:19:02 systemd[1]: Closed Libvirt admin socket. Oct 28 15:19:02 systemd[1]: Stopping Libvirt admin socket. Oct 28 15:19:02 systemd[1]: Closed Virtual machine lock manager socket. Oct 28 15:19:02 systemd[1]: Stopping Virtual machine lock manager socket. Oct 28 15:19:02 systemd[1]: Listening on Virtual machine lock manager socket. Oct 28 15:19:02 systemd[1]: Closed Libvirt local read-only socket. Oct 28 15:19:02 systemd[1]: Stopping Libvirt local read-only socket. Oct 28 15:19:02 systemd[1]: Closed Libvirt local socket. Oct 28 15:19:02 systemd[1]: Stopping Libvirt local socket. Oct 28 15:19:02 systemd[1]: Listening on Libvirt local socket. Oct 28 15:19:02 systemd[1]: Listening on Libvirt admin socket. Oct 28 15:19:02 systemd[1]: Listening on Libvirt local read-only socket. Oct 28 15:19:02 systemd[1]: Closed Virtual machine log manager socket. Oct 28 15:19:02 systemd[1]: Stopping Virtual machine log manager socket. Oct 28 15:19:02 systemd[1]: Listening on Virtual machine log manager socket. Oct 28 15:19:02 systemd[1]: Starting Virtualization daemon... Oct 28 15:19:02 systemd[1]: Stopping Suspend/Resume Running libvirt Guests... Oct 28 15:19:02 systemd[1]: Started Virtualization daemon. Oct 28 15:19:02 libvirt-guests.sh[4912]: Running guests on default URI: no running guests. Oct 28 15:19:02 systemd[1]: Stopped Suspend/Resume Running libvirt Guests. Oct 28 15:19:02 systemd[1]: Stopped target Libvirt guests shutdown. Oct 28 15:19:02 systemd[1]: Stopping Libvirt guests shutdown. Oct 28 15:19:02 systemd[1]: Reached target Libvirt guests shutdown. Oct 28 15:19:02 systemd[1]: Starting Suspend/Resume Running libvirt Guests... Oct 28 15:19:02 systemd[1]: Started Suspend/Resume Running libvirt Guests. Adding 'Requires=libvirtd.service' to virt-guest-shutdown.target results in expected behavior Oct 28 15:40:00 systemd[1]: Stopping Suspend/Resume Running libvirt Guests... Oct 28 15:40:00 libvirt-guests.sh[5245]: Running guests on default URI: no running guests. Oct 28 15:40:00 systemd[1]: Stopped Suspend/Resume Running libvirt Guests. Oct 28 15:40:00 systemd[1]: Stopped target Libvirt guests shutdown. Oct 28 15:40:00 systemd[1]: Stopping Libvirt guests shutdown. Oct 28 15:40:00 systemd[1]: Stopping Virtualization daemon... Oct 28 15:40:00 systemd[1]: Stopped Virtualization daemon. Oct 28 15:40:00 systemd[1]: Closed Virtual machine log manager socket. Oct 28 15:40:00 systemd[1]: Stopping Virtual machine log manager socket. Oct 28 15:40:00 systemd[1]: Listening on Virtual machine log manager socket. Oct 28 15:40:00 systemd[1]: Closed Libvirt admin socket. Oct 28 15:40:00 systemd[1]: Stopping Libvirt admin socket. Oct 28 15:40:00 systemd[1]: Closed Libvirt local read-only socket. Oct 28 15:40:00 systemd[1]: Stopping Libvirt local read-only socket. Oct 28 15:40:00 systemd[1]: Closed Libvirt local socket. Oct 28 15:40:00 systemd[1]: Stopping Libvirt local socket. Oct 28 15:40:00 systemd[1]: Listening on Libvirt local socket. Oct 28 15:40:00 systemd[1]: Listening on Libvirt admin socket. Oct 28 15:40:00 systemd[1]: Listening on Libvirt local read-only socket. Oct 28 15:40:00 systemd[1]: Closed Virtual machine lock manager socket. Oct 28 15:40:00 systemd[1]: Stopping Virtual machine lock manager socket. Oct 28 15:40:00 systemd[1]: Listening on Virtual machine lock manager socket. Oct 28 15:40:00 systemd[1]: Starting Virtualization daemon... Oct 28 15:40:00 systemd[1]: Started Virtualization daemon. Oct 28 15:40:00 systemd[1]: Reached target Libvirt guests shutdown. Oct 28 15:40:00 systemd[1]: Starting Suspend/Resume Running libvirt Guests... Oct 28 15:40:00 systemd[1]: Started Suspend/Resume Running libvirt Guests. Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Neal Gompa <ngompa13@gmail.com>		2020-11-04 16:26:27 -07:00
.ctags.d	maint: Add support for .ctags.d	2019-05-31 17:54:28 +02:00
.github	github: skip lockdown of old issues/prs	2020-04-07 17:50:54 +01:00
build-aux	syntax-check: Don't forbid curly braces around single line condition body	2020-09-15 15:20:23 +02:00
ci	ci: Refresh Dockerfiles	2020-10-09 10:14:42 +02:00
docs	schema: refactor mdev_types out of PCI nodedev schema	2020-11-04 19:15:17 +01:00
examples	libvirt: support memory failure event	2020-10-23 09:41:52 +02:00
include	Include vdpa devices in node device list	2020-10-26 02:39:29 -04:00
po	Translated using Weblate (Ukrainian)	2020-10-29 19:53:33 +01:00
scripts	scripts: meson-html-gen: Remove	2020-10-19 12:40:51 +02:00
src	remote: Add libvirtd dependency to virt-guest-shutdown.target	2020-11-04 16:26:27 -07:00
tests	qemu: add support for 'fmode' and 'dmode'	2020-11-04 18:25:56 +01:00
tools	libvirt-guests: Sync time for autostarted guests	2020-11-04 12:18:05 +01:00
.color_coded.in	gnulib: delete all gnulib integration	2020-02-07 15:03:54 +00:00
.ctags	ctags: Generate tags for headers, i.e. function prototypes	2018-09-18 14:21:33 +02:00
.dir-locals.el
.editorconfig	Add .editorconfig	2019-09-06 12:47:46 +02:00
.gitignore	Ignore clangd-related files and folders	2020-08-03 10:57:47 +02:00
.gitlab-ci.yml	ci: Start building RPMs	2020-10-09 10:14:42 +02:00
.gitmodules	gnulib: delete all gnulib integration	2020-02-07 15:03:54 +00:00
.gitpublish	gitpublish: add a subject prefix	2020-01-16 13:04:11 +00:00
.mailmap	mailmap: consolidate my email addresses	2020-10-06 12:05:09 +02:00
.ycm_extra_conf.py.in	gnulib: delete all gnulib integration	2020-02-07 15:03:54 +00:00
AUTHORS.rst.in	AUTHORS: Remove Emacs file variables	2020-09-02 13:20:17 +02:00
config.h	config.h: add a copyright blurb	2020-08-03 13:54:15 +02:00
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	rpm: tell meson whether to use libssh or libssh2 explicitly	2020-10-29 17:15:47 +00:00
meson_options.txt	meson: add tests build option to enable/disable unit tests	2020-10-09 13:44:54 +02:00
meson.build	Post-release version bump to 6.10.0	2020-11-02 11:18:13 +01:00
mingw-libvirt.spec.in	spec: Install all schemas	2020-10-08 09:58:44 +02:00
NEWS.rst	news: Remove empty section	2020-11-02 12:07:40 +01:00
README.rst	README: drop Travis CI badge	2020-08-03 15:08:28 +02:00
run.in	Prefer https: everywhere where possible	2020-09-01 21:58:46 +02:00

README.rst

Libvirt API for virtualization

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:

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:

https://libvirt.org/contact.html