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When the domain's source disk type is network, if source protocol is rbd or sheepdog, the 'if().. break' will end the current case, which lead to miss check the driver type is raw or qcow2. Libvirt will allow to create internal snapshot for a running domain with raw format disk which based on rbd storage. While both protocols support internal snapshots of the disk qemu is not able to use it as it requires some place to store the memory image. The check if the disk is backed by a qcow2 image needs to be executed always. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1179533 Signed-off-by: Shanzhi Yu <shyu@redhat.com> (cherry picked from commit f7c1410b0ee5b878e81f2eddf86c609947a9b27c)
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>