Braden McDaniel <bra...@endoframe.com> 于 2020年7月15日周三 下午10:21写道:

> I'd like to support a CentOS 7 client from a Fedora 32 NFS4 server.
>  Other Fedora 32 clients can mount the volume just fine using:
>
>    $ mount -t nfs4 my-server:/my-export-root/foo /foo
>
> But when I try this from a CentOS 7 client, I get:
>
>    mount.nfs4: Operation not permitted
>
> Is there any bit of configuration I can do on the client and/or server
> to make this work, short of allowing fallback to pre-4 NFS versions?
>
> --
> Braden McDaniel <bra...@endoframe.com>
>
Do you get any AVC denial (from any of the machine) when trying to access
the mount point?

You can use sealert to check AVC denials.

And if you need nfs3, try
mount -t nfs -o nfsvers=3 ....

>
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