スレ移動。
>>http://pc8.2ch.net/test/read.cgi/unix/1119232566/113

そう根拠でnullfsが消されたりするわけだよねえ。
で、判断を下した人の認識は
ttp://article.gmane.org/gmane.os.openbsd.misc/70990
It is obvious that the locking mechanisms of the vfs layer were never
fully purified for these filsystems, and never will be, and 15 years
of turd polishing has only made it marginally better. Meaning, that
for all operating systems groups who have such a thing, weird things
happen which make the filesystem behave not quite like a filesystem,
and even leading to crashes.
だったりするわけで。

nullfs がちゃんと動かないのは OpenBSD ぐらいじゃないの？
全然分かってませんな…