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When creating a new volume, it is possible to copy data into it from another already existing volume (referred to as @origvol). Obviously, the read-only access to @origvol is required, which is thread safe (probably not performance-wise though). However, with current code both @newvol and @origvol are marked as building for the time of copying data from the @origvol to @newvol. The rationale behind is to disallow some operations on both @origvol and @newvol, e.g. vol-wipe, vol-delete, vol-download. While it makes sense to not allow such operations on partly copied mirror, but it doesn't make sense to disallow vol-create or vol-download on the source (@origvol). 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>