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Is ALLOWNFS safe if there is no Universe installation on the remote system?

  • May 30, 2025
  • 1 reply
  • 2 views
P

I'm interested if anyone uses NFS to store account data remotely, with something like Netapp Files:
https://learn.microsoft.com/en-gb/azure/azure-netapp-files/network-attached-storage-protocols.

In my own research of documentation I can see the following:

[The ALLOWNFS] parameter should only be turned on in the following cases:

- When UniVerse is not running or not installed on the remote system. File integrity is compromised when locks are not maintained on the remote system.
- When the system administrator does not allow other UniVerse installations to gain access to the same remote UniVerse files at the same time.

So this would seem to indicate we are OK. I think I need to clarify: does local Universe locking still apply when ALLOWNFS is in use (and does this depend on the locking provided by NFS - because capabilities/implementations differ from version to version).

    1 reply

    Manu Fernandes
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    • Manu Fernandes
    • Inspiring
    • 257 replies
    • May 30, 2025

    I'm interested if anyone uses NFS to store account data remotely, with something like Netapp Files:
    https://learn.microsoft.com/en-gb/azure/azure-netapp-files/network-attached-storage-protocols.

    In my own research of documentation I can see the following:

    [The ALLOWNFS] parameter should only be turned on in the following cases:

    - When UniVerse is not running or not installed on the remote system. File integrity is compromised when locks are not maintained on the remote system.
    - When the system administrator does not allow other UniVerse installations to gain access to the same remote UniVerse files at the same time.

    So this would seem to indicate we are OK. I think I need to clarify: does local Universe locking still apply when ALLOWNFS is in use (and does this depend on the locking provided by NFS - because capabilities/implementations differ from version to version).

    Hi, 

    Lock management are done in-memory and is not reflected on the file. 

    To have a correct lock management, you must have two uv system and uvnet activated on the 'server' (the one which expose the file). With uvnet, the 'client' open a session on the 'server' and a protocole of request is executed. For read with lock, client ask remote session to read with lock. The lock is on the 'server' memory.

    ALLOWNFS authorize to access mounted remote file system and maintain the locks in memory of the client.

    I hope this help. 

    Manu


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