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77eff5eeb2
virStorageVolLookupByPath is an API call that virt-manager uses quite a bit when dealing with storage. This call use BackendStablePath which has several usleep() heuristics that can be tripped up and hang virt-manager for a while. Current example: an empty mpath pool pointing to /dev/mapper makes _any_ calls to virStorageVolLookupByPath take 5 seconds. The sleep heuristics are actually only needed in certain cases when we are waiting for new storage to appear, so let's skip the timeout steps when calling from LookupByPath.
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>