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https://bugzilla.redhat.com/show_bug.cgi?id=1119173 documents that commit eaba79d was flawed in the implementation of the VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC flag when it comes to completing a blockcopy. Basically, the qemu pivot action is async (the QMP command returns immediately, but the user must wait for the BLOCK_JOB_COMPLETE event to know that all I/O related to the job has finally been flushed), but the libvirt command was documented as synchronous by default. As active block commit will also be using this code, it is worth fixing now. * src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Don't skip wait loop after pivot. Signed-off-by: Eric Blake <eblake@redhat.com>
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>