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Our existing virDomainBlockResize takes an unsigned long long argument; if that command is later taught a DELTA and SHRINK flag, we cannot change its type without breaking API (but at least such a change would be ABI compatible). Meanwhile, the only time a negative size makes sense is if both DELTA and SHRINK are used together, but if we keep the argument unsigned, applications can pass the positive delta amount by which they would like to shrink the system, and have the flags imply the negative value. So, since this API has not yet been released, and in the interest of consistency with existing API, we swap virStorageVolResize to always pass an unsigned value. * include/libvirt/libvirt.h.in (virStorageVolResize): Use unsigned argument. * src/libvirt.c (virStorageVolResize): Likewise. * src/driver.h (virDrvStorageVolUpload): Adjust clients. * src/remote/remote_protocol.x (remote_storage_vol_resize_args): Likewise. * src/remote_protocol-structs: Regenerate. Suggested by Daniel P. Berrange.
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>