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If we cannot stat/open a file on pool refresh, returning -1 aborts the refresh and the pool is undefined. Only treat missing files as fatal unless VolOpenCheckMode is called with the VIR_STORAGE_VOL_OPEN_ERROR flag. If this flag is missing (when it's called from virStorageBackendProbeTarget in virStorageBackendFileSystemRefresh), only emit a warning and return -2 to let the caller skip over the file. https://bugzilla.redhat.com/show_bug.cgi?id=977706
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>