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The existence of the unix socket path is used by the remote driver to determine whether modular daemons are in use, so if the socket file stays behind and the user decided to switch from modular to monolithic daemon which was socket activated, the remote driver will insist on picking '/var/run/libvirt/virtqemud-sock', even when it's no longer in use: # systemctl start libvirtd.service # virsh list Id Name State -------------------- # systemctl stop libvirtd.service Warning: Stopping libvirtd.service, but it can still be activated by: libvirtd.socket libvirtd-ro.socket libvirtd-admin.socket # systemctl start virtqemud.socket # virsh list Id Name State -------------------- # systemctl stop virtqemud.socket # systemctl start libvirtd.service # virsh list error: failed to connect to the hypervisor error: Failed to connect socket to '/var/run/libvirt/virtqemud-sock': Connection refused # virsh -c 'qemu:///system?socket=/var/run/libvirt/libvirt-sock' list Id Name State -------------------- Fix this by instructing systemd to delete the socket file when deactivating the unit file for the socket. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ani Sinha <ani@anisinha.ca>
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:
- 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: