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https://bugzilla.redhat.com/show_bug.cgi?id=844378 When qemu dies early after connecting to its monitor but before we actually try to read something from the monitor, we would just fail domain start with useless message: "An error occurred, but the cause is unknown" This is because the real error gets reported in a monitor EOF handler executing within libvirt's event loop. The fix is to take any error set in qemuMonitor structure and propagate it into the thread-local error when qemuMonitorClose is called and no thread-local error is set. Signed-off-by: Jiri Denemark <jdenemar@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>
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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