W dniu 20 kwietnia 2012 14:01 użytkownik NeilBrown <neilb@xxxxxxx> napisał: > On Fri, 20 Apr 2012 13:30:39 +0200 Paweł Brodacki > <pawel.brodacki@xxxxxxxxxxxxxx> wrote: >> >> The way I read the message agrees with Alexander's perception. My >> impression from reading the commit message is, that normal shutdown >> may result in unclean array, which I would perceive as a regression. > > I don't think you'll find the word "normal" in the original message :-) > Neil, I respect you and admire your work and all, but I think you are having good time with us and this commit message, aren't you? :) >> >> I would really appreciate clear statement, whether this behaviour >> (writeback during shutdown, with possibility of poweroff/reboot while >> array is dirty) can or cannot occur during normal shutdown process. > > Define "normal". > If you kill any processes that could generate write-out, and then do a > 'sync', then everything should be fine. > I think "normal shutdown" can be defined for the purpose of this discussion as whatever /sbin/shutdown does. If I run /sbin/shutdown -h now, it is a normal shutdown. If I do fancy stuff echoing cute strings and integers into various parts of /proc and /sys, push magic buttons and/or pull cables at random, it' is not a normal shutdown. > I suspend a "normal" shutdown sequence does this. > > NeilBrown > I smell a hint here. man shutdown: "shutdown arranges for the system to be brought down in a safe way." Define safe... Neil, could you point us to a bug report which inspired you to write this patch? My google fu failed me and I was able to find just one bug entry from before 2 yerars, and even that hit is of dubious relevance. Pretty please with sugar on top? Best regards, Paweł Brodacki -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
