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The migration protocol has support for a 'cookie' parameter which is an opaque array of bytes as far as libvirt is concerned. Drivers may use this for passing around arbitrary extra data they might need during migration. The QEMU driver needs to do a few things: - Pass hostname/uuid to allow strict protection against localhost migration attempts - Pass SPICE/VNC server port from the target back to the source to allow seamless relocation of client sessions - Pass lock driver state from source to destination This patch introduces the basic glue for handling cookies but only includes the host/guest UUID & name. * src/libvirt_private.syms: Export virXMLParseStrHelper * src/qemu/qemu_migration.c, src/qemu/qemu_migration.h: Parsing and formatting of migration cookies * src/qemu/qemu_driver.c: Pass in cookie parameters where possible * src/remote/remote_protocol.h, src/remote/remote_protocol.x: Change cookie max length to 16384 bytes
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>