Chris Mason wrote: > write log blocks > flush #1 > write commit block > flush #2 > write metadata blocks > > I'd agree with Ted, there's a fairly small chance of things get reordered > around flush #1. Except when it crosses an MD disk boundary. Then it's really likely. We could also ask if there's _any_ possibility, when they are a merged single I/O, of them not getting written in the expected order? What about when FUA is set, does that imply any order? But it's all moot: Checksumming is the way forward here, no doubt. Checksumming makes the multi-sector write "atomic or corrupt". That's the same expectation as a commit sector provides by itself, but generalised to the whole journal entry. -- Jamie -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
