dd2f36d66e
Currently, libvirt creates a thread pool with only on thread to handle all qemu monitor events for virtual machines, In the cases that if the thread gets stuck while handling a monitor EOF event, such as unable to kill the virtual machine process or release resources, the events of other virtual machine will be also blocked, which will lead to the abnormal behavior of other virtual machines. For instance, when another virtual machine completes a shutdown operation and the monitor EOF event has been queued but remains unprocessed, we immediately destroy and start the virtual machine again, at a later time when EOF event get processed, the processMonitorEOFEvent() will kill the virtual machine that just started. To address this issue, in the processMonitorEOFEvent(), we check whether the current virtual machine's id is equal to the the one at the time the event was generated. If they do not match, we immediately return. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Guoyi Tu <tugy@chinatelecom.cn> Signed-off-by: dengpengcheng <dengpc12@chinatelecom.cn> |
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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:
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:
- users@lists.libvirt.org (for user discussions)
- devel@lists.libvirt.org (for development only)
Further details on contacting the project are available on the website: