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NFS mount failure

takahiro arai 
Hello, everyone.

After installing 10.0.2, nfs mount with tcp fails. It succeeds with udp.

The following command will fail.
$ mount_nfs -o tcp fileserver:/export /tmp/mnt

The following command will succeed.
 $ mount_nfs -o udp fileserver:/export /tmp/mnt
 
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  • 0

    Hi Takahiro,

    Sorry to hear that you're having trouble. Can you confirm that the system extensions are loaded correctly and that the endpoint was rebooted after install?

    After a reboot, if it's still not working an SDU would help us with our investigation. Please provide an SDU from the affected machine by following these steps:

    • Go into Central, find the device, and click on the generate SDU button
    • Once the sdu is uploaded, post the file name here so we can extract it and take a look

    Thanks for your feedback

  • 0 in reply to David Lancaster

    Hello, I'm Frank, developer at the Mac Endpoint team. 

    I'm trying to recreate the NFS mount issue so I've set up an NSF share on my NAS. Both TCP and UDP mount succeed with version 10.0.3 and 10.0.4 in my setup; files on the share can we read and written on Big Sur.

    Questions:

    1) what is the exact console output when trying to mount via TCP?

    2) does turning off "Real Time Scanning Files & Internet" and/or "Malicious Traffic Detection" change anything in the outcome?  

    Thanks,

    Frank

  • 0 in reply to frankfenn

    I’m sorry for the late reply.Thank you for your reply.

    I tried it with 10.0.4 in my environment, but it didn't work.

    > 1) what is the exact console output when trying to mount via TCP?

    The output is as follows

    root# mount_nfs -o tcp 172.19.76.158:/System/Volumes/Data/exports /tmp/mnt
    mount_nfs: can't mount /System/Volumes/Data/exports from 172.19.76.158 onto /private/tmp/mnt: Permission denied
    root# mount_nfs -o udp 172.19.76.158:/System/Volumes/Data/exports /tmp/mnt
    root# echo $?
    0

    > 2) does turning off "Real Time Scanning Files & Internet" and/or "Malicious Traffic Detection" change anything in the outcome?  

    I disabled the above settings, but it didn't improve.

    Please let us know if you have any other information you need.

    Thank you for your support.

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  • 0 in reply to frankfenn

    I’m sorry for the late reply.Thank you for your reply.

    I tried it with 10.0.4 in my environment, but it didn't work.

    > 1) what is the exact console output when trying to mount via TCP?

    The output is as follows

    root# mount_nfs -o tcp 172.19.76.158:/System/Volumes/Data/exports /tmp/mnt
    mount_nfs: can't mount /System/Volumes/Data/exports from 172.19.76.158 onto /private/tmp/mnt: Permission denied
    root# mount_nfs -o udp 172.19.76.158:/System/Volumes/Data/exports /tmp/mnt
    root# echo $?
    0

    > 2) does turning off "Real Time Scanning Files & Internet" and/or "Malicious Traffic Detection" change anything in the outcome?  

    I disabled the above settings, but it didn't improve.

    Please let us know if you have any other information you need.

    Thank you for your support.

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