On Fri, Jul 22, 2011 at 7:42 AM, Polytropon <free...@edvax.de> wrote:
> But wouldn't sync() (see "man 2 sync") make sure that > all buffers, even in regards to soft updates, get > immediately flushed / written? Apparently not. I think most of Matt Dillon's notes are still relevant. http://leaf.dragonflybsd.org/mailarchive/kernel/2010-01/msg00005.html >> In order to >> implement a stable queue, it would be best to use a different >> filesystem. > > What type of filesystem would match those requirements? I would make a UFS filesystem without Softupdates enabled, use fflush() and wait for a proper ack before promising to the caller that the bits will survive something like pulling the plug. Softupdates guarantees metadata consistency. I would probably make decisions about block and fragment sizes based on knowledge of the physical device's buffer mechanism, sector sizes, etc. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
