These patches introduce safezero() to allocate chunks for a file and write zeroes to them. Not yet ready for merge; I don't understand the configure system yet and don't know how to test for posix_fallocate() availability. The second patch introduces a new variable, track_allocation_progress, which perhaps belongs somewhere else. Pointers for both these problems appreciated. Thanks, Amit -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list