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8.99. libvirt-cim

Updated libvirt-cim packages that fix several bugs are now available for Red Hat Enterprise Linux 6.
The libvirt-cim packages contain a Common Information Model (CIM) provider based on Common Manageability Programming Interface (CMPI). It supports most libvirt virtualization features and allows management of multiple libvirt-based platforms.

Bug Fixes

Previously, running the wbemcli utility with the KVM_ComputerSystem class terminated unexpectedly with a segmentation fault. This was because even when connecting to the libvirtd daemon read-only, the domain XML with secure information, that is with the VIR_DOMAIN_XML_SECURE flag, was dumped. However, this operation is forbidden in libvirt. With this update, the flag is not used with read-only connections. Running the wbemcli command with KVM_ComputerSystem now displays the domain information as expected.
When updating certain libvirt-cim or sblim-smis-hba packages, the following error could have been logged in the /var/log/messages file:
sfcbmof: *** Repository error for /var/lib/sfcb/registration/repository//root/pg_interop/qualifiers
This problem occurred because libvirt-cim installed the PG_InterOp class incorrectly in the sblim-sfcb repository, however, this class is specific for the open-pegasus package. With this update, PG_InterOp is unregistered before upgrading the package, and no error message is logged in this scenario.
Previously, libvirt-cim incorrectly installed providers specific for the open-pegasus package in the sblim-sfcb repository. This could have caused various problems, for example, failures when compiling the MOF files. Providers specific for open-pegasus are now installed in the correct repository and the problems no longer occur.
Previously, if a qemu domain was defined with a bridge network interface, running the libvirt-cim provider failed with the following error message:
Unable to start domain: unsupported configuration: scripts are are not supported on interfaces of type bridge
This was because code triggering a script was added in a file used to create the domain prior to checking the qemu domain type. However, scripts are not allowed for qemu domains. With this update, a check for the qemu domain type is performed prior to adding the code triggering the script. As a result, when using libvirt-cim, it is now possible to create qemu domains with the bridge network interface.
Previously, a call to query a guest's current VNC address and port number returned the static configuration of the guest. If the guest was used to enable the "autoport" selection, the call did not return the allocated port. The libvirt-cim code has been modified to only return static configuration information. This allows other interfaces to return information based on the domain state. As a result, the current and correct port being used by the domain for VNC is now returned.
Virtual machines managed by a libvirt-cim broker were not aware of the "dumpCore" flag in the "memory" section nor was there support for the "shareable" property for "disk" devices. Thus, those properties were dropped from the virtual machine XML configuration when the configuration was updated by the broker. As a consequence, customers expecting or setting these properties on their virtual machines had to adjust the configurations in order to reset them. With this update, a patch has been added to libvirt-cim and it is now aware of these properties so that no changes made to the virtual machine XML configuration will be lost by the broker when it writes the configuration. As a result, virtual machines managed by the libvirt-cim broker will recognize the "dumpCore" tag in the "memory" section or the "shareable" tag on a "disk" device and not remove either when updating the virtual machine XML configuration.
Users of libvirt-cim are advised to upgrade to these updated packages, which fix these bugs.