On Wed, May 5, 2010 at 3:24 PM, Dominic Fandrey <kamik...@bsdforen.de> wrote: > I'm wondering how geom_sched influences soft-update consistency. > > To my understanding it's very important to SU, that the file system > controls writing sequences. Because geom_sched is transparent, > i.e. UFS does not know about access scheduling, I'm afraid that > the use of geom_sched would endanger my file system consistency > in case of a crash. > > Can anyone put my fears to rest or confirm them?
geom_sched is no different from the standard (elevator) disk scheduler or tagged queueing -- these system may already serve queued requests out of order. if a client wants to enforce a specific ordering of requests it can easily do so by waiting the completion of a previous request before issuing a new one. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
