I've been giving some thought to Anthony's idea: http://kvm.qumranet.com/kvmwiki/Specs/StoringCommandLineInImage
However, maybe I'm just too much on vacations, but I don't seem to come up with a nice way of doing this. Everything keeps coming back to creating a new 'container' image format and then implementing block layer functions that only add the number of sectors occupied by the command-line to the read and write calls made by QEMU, and then just relay those calls to the image-specific functions. That doesn't sound very efficient. The '#!' trick works nice with scripts, but I don't see it playing very well with images. ¿Comments? ¿Pointers? Cheers, Jorge
