> > But Linux's ext will CORRUPT YOUR DATA!!! (I'll give you one guess > > how > > I know this.) Who cares how fast it boots if your data is corrupted? > > How will ext3 corrupt my data after hard crash ?. I have observed data corruption due to crappy penguin filesystem. I have not spent the time to figure out exactly how it happens. I assume the source code is available. > AFAIK soft-dependiences keep filesystem in consistent state with > ordering metadata writes. softdeps keep ordered metadata(which were > not written to fs yet.) in memory. And therefore if you have hard > crash with heavy-io server you can loose more than with journaling fs. > Keep number of softdeps in-memory buffers small is not solution > because it slows your io then. Unix has had read-ahead & write-behind for decades. Any write-behind will result in lost data if the system goes down hard. With softdeps at least you don't lose the data that did make it out to disk.