Christoph Hellwig wrote: > On Mon, Feb 01, 2010 at 10:25:52AM +0100, Alexander Graf wrote: > >> We don't know beforehand if a user will use the commit comnand during >> tje runtime of the vm. >> >> IMHO it'd be best to always open backing files read only and try to >> open them for write access on the commit command. That command can >> then fail gaciously. >> > > That's another option. Basically this means opening another > BlockDriverState for the backing device that is writeable inside > bdrv_commit(). >
Or another function call hook to change the backing device state from RO to RW. Alex
