Re: [libvirt] [Qemu-devel] live snapshot wiki updated

On 07/19/11 18:47, Daniel P. Berrange wrote: > On Tue, Jul 19, 2011 at 04:30:19PM +0200, Jes Sorensen wrote: >> On 07/19/11 16:24, Eric Blake wrote: >>> Besides, I feel that having a well-documented file format, so that >>> independent applications can both parse the same file with the same >>> semantics by obeying the file format specification, is a good design goal. >> >> We all know that documentation is rarely uptodate, new features may not >> get added and libvirt will never be able to keep up. The driver for a >> file format belongs in QEMU and nowhere else. > > This would be possible if QEMU to provide a libblockformat.so library > which allowed apps to extract metadata from file formats using a stable > API. There is no reason for libvirt or any external process to mess about with the internals of image files. You have the same problem if the image file is encrypted.