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Date:      Fri, 10 Oct 2014 07:51:40 -0400 (EDT)
From:      Rick Macklem <rmacklem@uoguelph.ca>
To:        =?utf-8?B?TG/Dr2M=?= Blot <loic.blot@unix-experience.fr>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: NFSv4 nobody issue
Message-ID:  <1738545148.62071361.1412941900737.JavaMail.root@uoguelph.ca>
In-Reply-To: <93722b83a95e50f3fae349ecc0cd254d@mail.unix-experience.fr>

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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:
>=20
>  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
>=20
>  No problem if i set:
>  chown mysql:nobody /usr/jails/fulljail/mnt/
>=20
>  Problem appears on all files.
>=20
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
>=20
>  /etc/exports:
>  V4: /
>=20
>  zfs get sharenfs pool/jails:
>  -network=3D10.99.99.0 -mask=3D255.255.255.0 -maproot=3Droot
>=20
>  nfsuserd and nfsv4_server_enable=3DYES on both client and server, plus
>  nfsbcd on client.
>=20
>  On the client here is the fstab entry
>  10.99.99.99:/pool/jails /usr/jails nfs rw,nfsv4 0 0
>=20
>  What i'm doing wrong ?
>=20
>  Thanks in advance
>  Regards,
>=20
>  Lo=C3=AFc Blot,
>  UNIX Systems, Network and Security Engineer
>  http://www.unix-experience.fr
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