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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Peter Krempa 9d039863e2 qemu: block: Remove 'active-write' bitmap even if there are no bitmaps to merge
The 'libvirt-tmp-activewrite' bitmap is added during the 'pivot'
operation of block copy and active layer block commit operations
regardless of whether there are any bitmaps to merge, but was not
removed unless a bitmap was merged. This meant that subsequent attempts
to merge into the same image would fail.

Fix it by checking whether the 'libvirt-tmp-activewrite' would be used
by the code and don't skip the code which would delete it.

This is a regression introduced when we switched to the new code for
block commit in <20a7abc2d2d> and for block copy in <7bfff40fdfe5>. The
actual bug originates from <4fa8654ece>.

https://bugzilla.redhat.com/show_bug.cgi?id=1857735

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2020-07-21 09:52:59 +02:00
.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 po: change the format of POTFILES.in 2020-07-10 09:40:29 +02:00
ci ci: Drop Debian 9 containers 2020-07-15 12:06:34 +02:00
docs docs: fix compilation instructions to use separate build dir 2020-07-17 17:34:30 +01:00
examples qemu: support Panic Crashloaded event handling 2020-02-07 14:05:25 +00:00
include/libvirt API: Add VIR_DOMAIN_JOB_ERRMSG domain job statistics field 2020-04-24 08:56:57 +02:00
m4 m4: virt-xdr: rewrite XDR check 2020-07-10 16:07:02 +02:00
po Translated using Weblate (French) 2020-07-13 22:04:40 +02:00
scripts scripts: check-remote-protocol: remove unused OBJEXT argument 2020-07-10 09:40:32 +02:00
src qemu: block: Remove 'active-write' bitmap even if there are no bitmaps to merge 2020-07-21 09:52:59 +02:00
tests qemu: block: Remove 'active-write' bitmap even if there are no bitmaps to merge 2020-07-21 09:52:59 +02:00
tools wireshark: fix compilation errors 2020-07-10 16:07:02 +02:00
.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 build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.editorconfig Add .editorconfig 2019-09-06 12:47:46 +02:00
.gitignore gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
.gitlab-ci.yml ci: Drop Debian 9 jobs 2020-07-15 12:06:26 +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: Remove some duplicates 2019-06-07 13:18:08 +02:00
.ycm_extra_conf.py.in gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
ABOUT-NLS Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
AUTHORS.in AUTHORS: add Pino Toscano as a maintainer 2020-06-24 11:44:30 +02:00
autogen.sh autogen.sh: Restore --no-git (avoid git submodule update) 2020-06-03 16:19:13 +02:00
ChangeLog docs: point to GitLab as the primary git hosting 2020-06-03 13:38:33 +02:00
config-post.h gnulib: delete all gnulib integration 2020-02-07 15:03:54 +00:00
configure.ac Include <sys/socket.h> before including <net/if.h> 2020-07-20 09:41:23 +00:00
CONTRIBUTING.rst CONTRIBUTING: Include note about build system tools 2020-05-04 19:03:51 +02:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
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
GNUmakefile build: merge all syntax-check logic into one file 2019-10-09 13:36:54 +01:00
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: Drop explicit dependency on ncurses 2020-07-20 17:16:55 +02:00
Makefile.am news: Convert to reStructuredText 2020-06-05 16:27:33 +02:00
Makefile.nonreentrant Remove backslash alignment attempts 2017-11-03 13:24:12 +01:00
mingw-libvirt.spec.in spec: Require Fedora 31 2020-06-17 12:59:08 +02:00
NEWS.rst news: Document the type attribute for mac addresses 2020-07-13 18:47:57 +02:00
README Convert all remaining Markdown files to reStructuredText 2020-04-14 16:29:04 +02:00
README.rst po: update docs to refer to Weblate instead of Zanata 2020-06-08 16:38:47 +01:00
run.in run.in: Include tools directory on $PATH. 2020-01-21 13:04:57 +01:00

.. image:: https://gitlab.com/libvirt/libvirt/badges/master/pipeline.svg
     :target: https://gitlab.com/libvirt/libvirt/pipelines
     :alt: GitLab CI Build Status
.. image:: https://travis-ci.org/libvirt/libvirt.svg
     :target: https://travis-ci.org/libvirt/libvirt
     :alt: Travis CI Build Status
.. image:: https://bestpractices.coreinfrastructure.org/projects/355/badge
     :target: https://bestpractices.coreinfrastructure.org/projects/355
     :alt: CII Best Practices
.. image:: https://translate.fedoraproject.org/widgets/libvirt/-/libvirt/svg-badge.svg
     :target: https://translate.fedoraproject.org/engage/libvirt/
     :alt: Translation status

==============================
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:

* 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