we haven't spent any time making flock() work, so if it works on one
machine, consider yourself lucky :).
why do you need locks?
rob
Lorenzo Pinto wrote:
Hi,
I realize that flock and other flavors of advisory locking are not
officially supported by PVFS through VFS. However, with my setup of one
PVFS client machine, four I/O servers, and one metadata server
(different from the client machine), it does appear that multiple
applications and/or threads, on the one client machine, calling flock on
a pvfs2 file-system file behave correctly. This can be tested using the
(FC5) flock application. As expected, this does not work with multiple
client machines.
For my particular task, I could accept all PVFS applications that write
data to be confined to one machine while the readers (which would not
use locking) are distributed among numbers machines.
Now the question: Is the behavior I'm observing by design, or is it
some coincidence that should not be relied upon.
System info:
pvfs2-1.5.0
VFS interface
Fedora Core 5, 2.6.16-1.2122_FC5smp
Regards,
Lorenzo
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