NFSv4 nobody issue

[Rick Macklem]

Loic Blot wrote:
> Hello @freebsd-fs,
>  i'm trying to do jail hosting over NFSv4 with ezjail and i'm
>  experimenting an issue that i can't resolve. When i extract
>  base.txz (with ezjail) or i set nobody user on a file, i have this
>  error:
> 
>  chown nobody:nobody /usr/jails/fulljail/mnt/
>  No name and/or group mapping for uid,gid:(65534,65534)
>  chown: /usr/jails/fulljail/mnt/: Operation not permitted
> 
>  No problem if i set:
>  chown mysql:nobody /usr/jails/fulljail/mnt/
> 
>  Problem appears on all files.
> 
Do you have a user by the name of "nobody" in your password database?
(NFSv4 uses names and not numbers on the wire, so no name-->no mapping
 and chown can't be done.)

rick

>  On my ZFS+NFSv4 server i do a dataset, exported in NFS
> 
>  /etc/exports:
>  V4: /
> 
>  zfs get sharenfs pool/jails:
>  -network=10.99.99.0 -mask=255.255.255.0 -maproot=root
> 
>  nfsuserd and nfsv4_server_enable=YES on both client and server, plus
>  nfsbcd on client.
> 
>  On the client here is the fstab entry
>  10.99.99.99:/pool/jails /usr/jails nfs rw,nfsv4 0 0
> 
>  What i'm doing wrong ?
> 
>  Thanks in advance
>  Regards,
> 
>  Loïc Blot,
>  UNIX Systems, Network and Security Engineer
>  http://www.unix-experience.fr
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