Hello J. R. Thanks a lot for your feedback on this. I'll be stay tuned. Please let me know if you need anything else from my end.
Regards, Joonwoo On Thu, Dec 2, 2010 at 5:06 AM, <sf...@users.sourceforge.net> wrote: > >> Hello Joonwoo, >> >> Joonwoo Park: >> > While I'm examining udba=notify option, I encountered a behavior that >> > I didn't expect. >> > I have two directories (/tmp/tmpfs0 and /tmp/tmpfs1) which are >> > branches of /tmp/aufs0 as well asl /tmp/aufs1... which means two >> > different /tmp/aufs0 and /tmp/aufs1 are sharing same branches. >> > However if I add a same named file to /tmp/tmpfs1 and then >> > /tmp/tmpfs0, only /tmp/aufs0 shows updated file from /tmp/tmpfs0 while >> > /tmp/aufs1 still shows file from /tmp/tmpfs1 >> >> Interesting use case. >> I have reproduced the problem. I'll dive into this problem when I have >> time. >> Thank you for reporting. > > During the long long tests for next Monday release, I looked > 2.6.33/fs/notify/fsnotify.c and might find the cause. > > When aufs registers the callback to receive notify, fsnotify checks > whether the same callback is already registered or not. If it is already > registered, the new one is simply ignored. Finally two aufs-es receives > only one event. This is my current guess. > I know you are 2.6.32 instead of .33. But I also guess fsnotify may not > change so much in .33. > > Anyway I will fix aufs, hopefully within this year. > Here are my current plans. > - make things to be registered to fsnotify per aufs super_block, so that > fsnotify will not handle these two callbacks are not identical (since > you have two aufs-es). > --> it consumes memory > or > - register only one callback to fsnotify. the handler in aufs > distributes for each aufs. > --> the handler operates several inodes in different aufs. I think > this is bad approach. > or > - ??? > > > J. R. Okajima > ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev
