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If the migration flags indicate this migration will be using TLS, then set up the destination during the prepare phase once the target domain has been started to add the TLS objects to perform the migration. This will create at least an "-object tls-creds-x509,endpoint=server,..." for TLS credentials and potentially an "-object secret,..." to handle the passphrase response to access the TLS credentials. The alias/id used for the TLS objects will contain "libvirt_migrate". Once the objects are created, the code will set the "tls-creds" and "tls-hostname" migration parameters to signify usage of TLS. During the Finish phase we'll be sure to attempt to clear the migration parameters and delete those objects (whether or not they were created). We'll also perform the same reset during recovery if we've reached FINISH3. If the migration isn't using TLS, then be sure to check if the migration parameters exist and clear them if so.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>