I am evaluating to use the UNIX flock on files of a remote mounted
directory.
Can different process, working on different machines, flock files on a
remote mounted directory without interfere each other?
Thanx

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cestesteban@yahoo.it writes:
>I am evaluating to use the UNIX flock on files of a remote mounted
>directory.
>Can different process, working on different machines, flock files on a
>remote mounted directory without interfere each other?
>Thanx
>

Depends.

When you say "remote mounted" are you referring to RFS, NFS, AFS or SMB
as the underlying protocol?

RFS (which nobody supports anymore) had locking support iirc.
NFS supports it if both hosts are running compatible lockd instances.
AFS i'm not sure
SMB (aka CIFS) not likely.

scott

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cestesteban@yahoo.it wrote:

> Can different process, working on different machines, flock files on a
> remote mounted directory without interfere each other?

At least with Linux, flock() is not guaranteed to work with NFS mounts.
fcntl() locks work with NFS, not sure about other network filesystems.

Chris

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