Re: [libvirt] [PATCH 3/3] Add volume zeroing

> > ANother option would be to add an explicit virStorageVolZero() API to > allow a volume to be wiped independently of create/delete operations. I like this approach. Since the code is already written for pretty much every permutation: regular non-sparse file, regular sparse file, block device, adding the new API isn't a lot of work. That gives users the greatest flexibility for choosing the time of the zero operation, which is important since it's time consuming.