> Thought about that and querying power state before doing shutdown > sequence but things get somewhat ugly because shutdown sequence is > driven from sd->shutdown(). We'll have to snoop both sync and shutdown > commands and check whether the system is shutting down. Also, I felt > very uneasy about faking successful completion to SYNCHRONIZE_CACHE. If you see a synchronize cache succeed and you then see the drive shutdown succeed then you know that a sync cache can be faked as ok safely. Any other command in between or after and it doesn't get faked This seems pretty easy to deal with at command issue. > I dunno. It's already too late for 2.6.21. I was hoping we could get > distros to update shutdown utilities in not-too-distant future but I > have no experience with that. Is that just a wishful thinking? Probably not, but it will take a year or so and throughout this time period everyone with the wrong combination of shutdown and kernel (which will be a lot of people who compile their own kernels) are going to have problems caused by what is a very obscure piece of libata internal behaviour they'll never even know about. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html