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External checkpoints could be created with snapshot-create, but without libvirt supplying a default name for the memory file, it is essential to add a new argument to snapshot-create-as to allow the user to choose the memory file name. This adds the option --memspec [file=]name[,snapshot=type], where type can be none, internal, or external. For an example, virsh snapshot-create-as $dom --memspec /path/to/file is the shortest possible command line for creating an external checkpoint, named after the current timestamp. * tools/virsh-snapshot.c (vshParseSnapshotMemspec): New function. (cmdSnapshotCreateAs): Use it. * tests/virsh-optparse (test_url): Test it. * tools/virsh.pod (snapshot-create-as): Document it.
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>