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During incoming migration the QEMU monitor is not able to be used. The incoming migration code did not keep hold of the job lock because migration is split across multiple API calls. This meant that further monitor commands on the guest would hang until migration finished with no timeout. In this change the qemuDomainMigratePrepare method sets the job flag just before it returns. The qemuDomainMigrateFinish method checks for this job flag & clears it once done. This prevents any use of the monitor between prepare+finish steps. The qemuDomainGetJobInfo method is also updated to refresh the job elapsed time. This means that virsh domjobinfo can return time data during incoming migration * src/qemu/qemu_driver.c: Keep a job active during incoming migration. Refresh job elapsed time when returning job info
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>