On Wed, Apr 21, 2010 at 8:11 AM, Hans-Werner Paulsen <[email protected]> wrote: > On Wed, Apr 21, 2010 at 12:49:39PM +0100, Simon Wilkinson wrote: >> >When there are two processes (on different machines) executing that >> >code, the (2) flock call has to update the local copy of the afs-file, >> >otherwise locking is useless. And the (3) flock call has to sync the >> >local copy with the fileserver. >> >Writing a small test program I see that this synchronization isn't >> >done. >> >How can I use the flock(2) call on AFS files? >> >> Are you saying that the locks don't make it to the fileserver (so two >> processes on different machines can flock() the same file). Or that >> the file isn't flushed to the server when it is unlocked, so the >> second machine doesn't see the changes that the first machine has made? >> > The second one. To be honest, today I checked only, that the local copy > (the cache) is not updated from the fileserver on "flock(fd,LOCK_EX)".
if you have a valid callback, the file better be up to date. uh.... -- Derrick _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
