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Just like VM saved state images (virsh save), snapshots MUST track the inactive domain xml to detect any ABI incompatibilities. The indentation is not perfect, but functionality comes before form. Later patches will actually supply a full domain; for now, this wires up the storage to support one, but doesn't ever generate one in dumpxml output. Happily, libvirt.c was already rejecting use of VIR_DOMAIN_XML_SECURE from read-only connections, even though before this patch, there was no information to be secured by the use of that flag. And while we're at it, mark the libvirt snapshot metadata files as internal-use only. * src/libvirt.c (virDomainSnapshotGetXMLDesc): Document flag. * src/conf/domain_conf.h (_virDomainSnapshotDef): Add member. (virDomainSnapshotDefParseString, virDomainSnapshotDefFormat): Update signature. * src/conf/domain_conf.c (virDomainSnapshotDefFree): Clean up. (virDomainSnapshotDefParseString): Optionally parse domain. (virDomainSnapshotDefFormat): Output full domain. * src/esx/esx_driver.c (esxDomainSnapshotCreateXML) (esxDomainSnapshotGetXMLDesc): Update callers. * src/vbox/vbox_tmpl.c (vboxDomainSnapshotCreateXML) (vboxDomainSnapshotGetXMLDesc): Likewise. * src/qemu/qemu_driver.c (qemuDomainSnapshotCreateXML) (qemuDomainSnapshotLoad, qemuDomainSnapshotGetXMLDesc) (qemuDomainSnapshotWriteMetadata): Likewise. * docs/formatsnapshot.html.in: Rework doc example. Based on a patch by Philipp Hahn.
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>