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9c21b44131
Lots of earlier patches led up to this point - the qemu snapshot_blkdev monitor command can now be controlled by libvirt! Well, insofar as SELinux doesn't prevent qemu from open(O_CREAT) on the files. There's still some followup work before things work with SELinux enforcing, but this patch is big enough to post now. There's still room for other improvements, too (for example, taking a disk snapshot of an inactive domain, by using qemu-img for both internal and external snapshots; wiring up delete and revert control, including additional flags from my RFC; supporting active QED disk snapshots; supporting per-storage-volume snapshots such as LVM or btrfs snapshots; etc.). But this patch is the one that proves the new XML works! * src/qemu/qemu_driver.c (qemuDomainSnapshotCreateXML): Wire in active disk snapshots. (qemuDomainSnapshotDiskPrepare) (qemuDomainSnapshotCreateDiskActive) (qemuDomainSnapshotCreateSingleDiskActive): New functions.
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>