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QEMU does not abandon the mirror. The job carries on in the synchronised phase and it might be either pivoted again or cancelled. The commit hints that the described behavior was happening in a downstream version. If the command returns false there are two possible options: 1) qemu did not reach the point where it would ask the block job to pivot 2) pivotting failed in the actual qemu coroutine If either of those would happen we return failure and reset the condition that waits for the block job to complete. This makes the API fail but in case where qemu would actually abandon the mirror the fact is notified via the event and handled asynchronously. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1202704
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>