fef4d132c4
On start up of libvirtd the worker pool of the QEMU driver must be initialized before trying to reconnect to all the running QEMU instances. Otherwise segmentation faults can occur if there are QEMU monitor events emitted. #0 __GI___pthread_mutex_lock #1 0x000003fffdba9e62 in virMutexLock #2 0x000003fffdbab2dc in virThreadPoolSendJob #3 0x000003ffd8343b70 in qemuProcessHandleSerialChanged #4 0x000003ffd836a776 in qemuMonitorEmitSerialChange #5 0x000003ffd8378e52 in qemuMonitorJSONHandleSerialChange #6 0x000003ffd8378930 in qemuMonitorJSONIOProcessEvent #7 0x000003ffd837edee in qemuMonitorJSONIOProcessLine #8 0x000003ffd837ef86 in qemuMonitorJSONIOProcess #9 0x000003ffd836757a in qemuMonitorIOProcess #10 0x000003ffd836863e in qemuMonitorIO #11 0x000003fffdb4033a in virEventPollDispatchHandles #12 0x000003fffdb4055e in virEventPollRunOnce #13 0x000003fffdb3e782 in virEventRunDefaultImpl #14 0x000003fffdc89400 in virNetDaemonRun #15 0x000000010002a816 in main Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com> Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Reviewed-by: Erik Skultety <eskultet@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: