On Wed, Jan 27, 2021 at 11:15:05PM +0100, Pavel Machek wrote: > Hi! > > > - Solution > > > > The System Generation ID is a simple concept meant to alleviate the > > issue by providing a monotonically increasing u32 counter that changes > > each time the VM or container is restored from a snapshot. > > I'd make it u64. > > But as people explained, this has race problems that may be impossible > to solve? Well the read/write interface could be used in a safe way thinkably: - application checks VM gen id - application sends a transaction e.g. to database - application re-checks VM gen id - if id changed, application checks the database for duplicate transactions not sure how can the mmap interface be used safely. Drop it for now? > Best regards, > Pavel > > -- > http://www.livejournal.com/~pavelmachek
