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Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
06d4a1e429
This idea was first suggested by Daniel Veillard here: https://www.redhat.com/archives/libvir-list/2011-October/msg00353.html Now that I am about to add more complexity to snapshot listing, it makes sense to avoid code duplication and special casing for domain listing (all snapshots) vs. snapshot listing (descendants); adding a metaroot reduces the number of code lines by having the domain listing turn into a descendant listing of the metaroot. Note that this has one minor pessimization - if we are going to list ALL snapshots without filtering, then virHashForeach is more efficient than recursing through the child relationships; restoring that minor optimization will occur in the next patch. * src/conf/domain_conf.h (_virDomainSnapshotObj) (_virDomainSnapshotObjList): Repurpose some fields. (virDomainSnapshotDropParent): Drop unused parameter. * src/conf/domain_conf.c (virDomainSnapshotObjListGetNames) (virDomainSnapshotObjListCount): Simplify. (virDomainSnapshotFindByName, virDomainSnapshotSetRelations) (virDomainSnapshotDropParent): Match new field semantics. * src/qemu/qemu_driver.c (qemuDomainSnapshotCreateXML) (qemuDomainSnapshotReparentChildren, qemuDomainSnapshotDelete): Adjust clients. |
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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>