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Currently we check qemuCaps before starting the block job. But qemuCaps isn't available on a stopped domain, which means we get a misleading error message in this case: # virsh domstate example shut off # virsh blockjob example vda error: unsupported configuration: block jobs not supported with this QEMU binary Move the qemuCaps check into the block job so that we are guaranteed the domain is running. Signed-off-by: Michael Chapman <mike@very.puzzling.org>
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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>
Description
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.
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