File locking in NFS is broken (with respect to how you'd expect it to work on a local filesystem). You'll either have to do some sort of lock-file hack (like you propose) or use a different networking filesystem (I thin that DFS and AFS handle this well, but that may not be an option for you). Instead of writing something yourself I recomend you use a module like LockFile::Simple, DotLock or IPC::Locker, which is designed to manage lockfiles, these modules can still have problems w/ NFS due to possible race conditions (see the individual module's docs for details). Writing locking code yourself is tricky and subject to problems unless you're really careful.

In reply to Re: File locking on NFS by lhoward
in thread File locking on NFS by chb

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