yet another NFS permissions question

[fahadshery]

Hi,

I have looked here, here, here, here and here but can't seem to get it to work!

I have a dataset for mysql within TrueNas and mounting in the Ubuntu server using NFS, here is the /etc/fstab entry:

truenas_ip:/mnt/tank_fast10/mysql/mysql_home /mnt/truenas/mysql/mysql_home nfs auto,nofail,noatime,nolock,intr,tcp,actimeo=1800 0 0

I have set the Mapuser to my username and mapgroup to wheel when sharing the NFS dataset.
It mounts the dataset as nobody 4294967294. I can create the files or directories with no issues.

The problem comes when I wish to install mysql using docker which tries to change the ownership of the files and folders when installing for the first time.
It gives the following error:

Code:

chown: changing ownership of '/var/lib/mysql/': Invalid argument

I then created some test file in the folder and get the same error.

Code:

sudo chown myuser:mygroup test/
chown: changing ownership of 'test/': Invalid argument

Could anyone pls give some pointers? This is driving me nuts!!

Thanks in advance and have a great festive season!