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Status Future consideration
Workspace IBM i
Created by Guest
Created on May 18, 2022

Allow to mount NFS without a ping response

There are some NFS services (cloud storage gateways, cloud NFS services, etc) that block echo icmp response, so you won't receive an answer from ping. This change could allow to work with more cloud services
Idea priority Medium
  • Guest
    Sep 15, 2022
    Moving to Uncommitted Candidate to further evaluate and prioritize with other future work.

    IBM i Development Team
  • Guest
    Sep 1, 2022

    Maybe the issue is related to the use of NFS V3 with TCP instead of UDP, so let me refrase my request:

    Can you allow the 632B device to use NFS V3 over TCP so we can connect to Azure NFS service or Azure DataBox?

  • Guest
    May 26, 2022

    Understand this changes, but sometimes we need to perform some tasks like upgrades or restore 21 that require the 632B device usage. Are 632B devices aware of these changes to use TCP instead of UDP?

  • Guest
    May 18, 2022
    Azure NFSv3 only appears to support NFS over TCP. (
    The IBM i NFSv3 client does have support for TCP, but it is not the default. Additional steps need to be taken to enable TCP client support on releases prior to IBM i 7.5. See for information on how to enable TCP support.
    The virtual optical NFS devices only support NFSv3 over UDP. Those are not compatible with NFS servers that only support NFS over TCP.

    Does any of that information resolve the problem, or is more investigation required to address and define the request?

    -- IBM i NFS development team lead
  • Guest
    May 18, 2022

    We have make some tests with Azure NFS V3 service to mount from IBM i using ADDMFS and fail with a message telling there's no response from the NFS server.

    We have also tried with a 632B device (works different) with errors too.

  • Guest
    May 18, 2022
    The development team is going to need some more information to be able to properly assess this request. The IBM i NFS client does not send any ICMP requests to the server during processing of a mount. It connects directly to the NFS service ports on the specified server.

    The request, as currently stated, appears to be invalid because the NFS client does not ping the server during or prior to processing a mount request. Is there a specific connection scenario or support case related to this request that could help the development team better understand the problem?

    -- IBM i NFS development team lead