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40ad7160a2
Use the probing functionality added in the last patch to turn on a capability bit when active commit is present, and gate active commit on that capability. For my own reference: the difference between BLOCKJOB_SYNC and BLOCKJOB_ASYNC is whether qemu generated an event at the conclusion of blockpull; basically, RHEL 6.2 was the only release of qemu that has the sync semantics and lacks the event. RHEL 6.3 added blockcopy, but also picked up on the upstream style of qemu generating events. As no one is likely to backport active commit to RHEL 6.2, it's safe for blockcommit to always require async blockjob support. Modifying qemucapabilitiestest is painful; the .replies files would be so much easier if they had comments correlating which command generated the given reply. Maybe I'll fix that up later... * src/qemu/qemu_capabilities.h (QEMU_CAPS_ACTIVE_COMMIT): New capability. * src/qemu/qemu_driver.c (qemuDomainBlockCommit): Use the new bit * src/qemu/qemu_capabilities.c (virQEMUCaps): Name the new bit. (virQEMUCapsProbeQMPCommands): Set it. * tests/qemucapabilitiesdata/caps_1.3.1-1.replies: Update. * tests/qemucapabilitiesdata/caps_1.4.2-1.replies: Likewise. * tests/qemucapabilitiesdata/caps_1.5.3-1.replies: Likewise. * tests/qemucapabilitiesdata/caps_1.6.0-1.replies: Likewise. * tests/qemucapabilitiesdata/caps_1.6.50-1.replies: Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
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>