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Drivers were inconsistent when presented both --live and --config at once. For example, within qemu, getting memory parameters favored live, getting blkio tuning favored config, and getting scheduler parameters errored out. Also, some, but not all, attempts to mix flags on query were filtered at the virsh level. We shouldn't have to duplicate efforts in every client app, nor in every driver. So, it is simpler to just enforce that the two flags cannot both be used at once on query operations, which has precedent in libvirt.c, and which matches the documentation of virDomainModificationImpact. * src/libvirt.c (virDomainGetMemoryParameters) (virDomainGetBlkioParameters) (virDomainGetSchedulerParametersFlags, virDomainGetVcpuPinInfo): Borrow sanity checking from virDomainGetVcpusFlags.
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>