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a14eda311e
Commit d42a2ff caused a regression in creating a disk-only snapshot of a qcow2 disk; by passing the wrong variable to the monitor call, libvirt ended up creating JSON that looked like "format":null instead of the intended "format":"qcow2". To make it easier to diagnose this in the future, make JSON creation error out if "s:arg" is paired with NULL (it is still possible to use "n:arg" in the rare cases where qemu will accept a null). * src/qemu/qemu_driver.c (qemuDomainSnapshotCreateSingleDiskActive): Pass correct value. * src/qemu/qemu_monitor_json.c (qemuMonitorJSONMakeCommandRaw): Improve error message.
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>