locking /concurrency control - Security

This is a discussion on locking /concurrency control - Security ; Hi, what exactly is the locking /concurrency control mechanism used in NFS to prevent simultaneous updates in NFS ?...

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Thread: locking /concurrency control

  1. locking /concurrency control

    Hi,

    what exactly is the locking /concurrency control mechanism used in
    NFS to prevent simultaneous updates in NFS ?

  2. Re: locking /concurrency control

    aarklon@gmail.com wrote:
    > what exactly is the locking /concurrency control mechanism used in
    > NFS to prevent simultaneous updates in NFS ?


    "man nfs" would show you:

    "The Network Lock Manager protocol is a separate sideband protocol used
    to manage file locks in NFS version 2 and version 3. To support
    lock recovery after a client or server reboot, a second sideband
    protocol -- known as the Network Status Manager protocol -- is also
    required.
    In NFS version 4, file locking is supported directly in the main NFS
    protocol, and the NLM and NSM sideband protocols are not used."

    Toni
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    e9427514 (at) student.tuwien.ac.at

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