mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2025-03-07 17:28:15 +00:00
988218ca3f
https://bugzilla.redhat.com/show_bug.cgi?id=1372613 Apparently, some management applications use the following code pattern when waiting for a block job to finish: while (1) { virDomainGetBlockJobInfo(dom, disk, info, flags); if (info.cur == info.end) break; sleep(1); } Problem with this approach is in its corner cases. In case of QEMU, libvirt merely pass what has been reported on the monitor. However, if the block job hasn't started yet, qemu reports cur == end == 0 which tricks mgmt apps into thinking job is complete. The solution is to mangle cur/end values as described here [1]. 1: https://www.redhat.com/archives/libvir-list/2016-September/msg00017.html Signed-off-by: Michal Privoznik <mprivozn@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>