[Gluster-users] Cannot mount NFS

[Bernard Li]

Hi Horacio:

The NFS native server only works with NFSv3, I saw that in some of
your attempts your client might have negotiated using v3, but haven't
seen you explicitly specifying that in the mount call, perhaps you can
try something like this:

# mount -o nfsvers=3 gluster-nfs:/export /share

For further details, please see this bug report:

http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1688

Cheers,

Bernard

On Wed, Nov 3, 2010 at 7:06 PM, Horacio Sanson <hsanson at gmail.com> wrote:
> I have a two server replicated volume that I can mount without problems using
> the native client but I cannot make this work via NFS no matter what.
>
> I read the mailing list and the FAQ, applied all fixes but still no luck.
>
>
> System:
>  Two Gluster nodes with vanilla Ubuntu 10.10 LTS 64bit.
>  One client with vanilla Ubuntu 10.10 Desktop 32bit
>  One client with vanilla Ubuntu 10.10 LTS 64bit
>
> Gluster:  Installed using glusterfs_3.1.0-1_amd64.deb
>
> Command used to create volume:
>   sudo gluster volume create www replica 2 transport tcp \
>             192.168.4.90:/opt/www  192.168.4.91:/opt/www
>
> Below I present all my attempts to get NFS mounted on the two clients I have
> so everything below multiply by 2:
>
> 1. NFS Mount attempt 1: After creating the volume
>
> $ sudo mount -v  -t nfs 192.168.4.91:/www /mnt
> mount.nfs: timeout set for Thu Nov  4 10:37:17 2010
> mount.nfs: trying text-based options
> 'vers=4,addr=192.168.4.91,clientaddr=192.168.4.111'
> mount.nfs: mount(2): Connection refused
>
> 2. NFS Mount attempt 2: Seems UDP is not supported so I added the tcp option:
>
> $ sudo mount -v -o mountproto=tcp -t nfs 192.168.4.91:/www /mnt
> mount.nfs: timeout set for Thu Nov  4 10:38:36 2010
> mount.nfs: trying text-based options 'mountproto=tcp,addr=192.168.4.91'
> mount.nfs: prog 100003, trying vers=3, prot=6
> mount.nfs: portmap query retrying: RPC: Unable to receive
>
> mount.nfs: prog 100003, trying vers=3, prot=17
> mount.nfs: portmap query failed: RPC: Unable to receive
>  - Connection refused
> mount.nfs: trying text-based options 'mountproto=tcp,addr=192.168.4.91'
> mount.nfs: prog 100003, trying vers=3, prot=6
> mount.nfs: portmap query retrying: RPC: Unable to receive
>
> 3. NFS Mount attempt 3: Google tells me I need to start portmap
>
> - on both Gluster servers and the clients I installed portmap
> $ sudo aptitude install portmap # This should be a dependency of Gluster deb
> $ sudo service portmap start
>
> - on the client:
> $ sudo mount -v -o mountproto=tcp -t nfs 192.168.4.91:/www /mnt
> mount.nfs: timeout set for Thu Nov  4 10:42:07 2010
> mount.nfs: trying text-based options 'mountproto=tcp,addr=192.168.4.91'
> mount.nfs: prog 100003, trying vers=3, prot=6
> mount.nfs: portmap query retrying: RPC: Program not registered
>
> mount.nfs: prog 100003, trying vers=3, prot=17
> mount.nfs: portmap query failed: RPC: Program not registered
>
> mount.nfs: prog 100003, trying vers=2, prot=6
> mount.nfs: portmap query retrying: RPC: Program not registered
>
> mount.nfs: prog 100003, trying vers=2, prot=17
> mount.nfs: portmap query failed: RPC: Program not registered
>
> mount.nfs: prog 100003, trying vers=2, prot=6
> mount.nfs: portmap query retrying: RPC: Program not registered
>
> mount.nfs: prog 100003, trying vers=2, prot=17
> mount.nfs: portmap query failed: RPC: Program not registered
>
> mount.nfs: requested NFS version or transport protocol is not supported
>
> 4. Me throwing keyboard throught the fourth floor window.
>
> 5. NFS Mount attempt 4: Retry 3 but without tcp option, maybe it is not needed
> with portmap started:
>
> $ sudo mount -v -t nfs 192.168.4.91:/www /mnt
> mount.nfs: timeout set for Thu Nov  4 10:45:37 2010
> mount.nfs: trying text-based options
> 'vers=4,addr=192.168.4.91,clientaddr=192.168.4.111'
> mount.nfs: mount(2): Connection refused
> mount.nfs: trying text-based options
> 'vers=4,addr=192.168.4.91,clientaddr=192.168.4.111'
> mount.nfs: mount(2): Connection refused
> mount.nfs: trying text-based options
> 'vers=4,addr=192.168.4.91,clientaddr=192.168.4.111'
> mount.nfs: mount(2): Connection refused
>
> 5. Re-read FAQ, there is something about DNS being use for authentication.
> Sounds related to the Connection refused error I am getting:
>
> skillup at store90:~$ sudo gluster set www rpc-auth.addr.namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www rpc-auth.addr.namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www rpc-auth.addr.namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www add.namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www rpc-auth.namelookup off
> unrecognized word: set (position 0)
> skillup at store90:~$ sudo gluster set www rpc-auth.addr.namelookup off
> unrecognized word: set (position 0)
>
> 6. Set up hosts file so each Gluster node and client can resolve their
> hostnames locally.
>
> $ NFS Mount attempt 5,6,7,8:  Try all mount options from 1-5 above, including
> 4 several times but with the hosts file correctly set up.
>
> 7. Bang head against wall.... get huge cup of coffee.
>
> 8. Re-read mailing list: It seems that gluster NFS may conflict with the kernel
> NFS service:
>
> $ sudo aptitude search nfs-kernel-server
>  p   nfs-kernel-server
>
> it is not installed so this could not be the problem.....
>
> 9: NFS Mount attempt 8,10,11,12: Last try
>
> $ Try all mount options from 1-5 above, including 4 several times but using
> the ip-address of the other gluster brick node.....  still no joy.
>
> 10: Check iptables -L, hosts.deny and hosts.allow files. There are no
> restrictions of any kind. All iptable chains are empty and with default ACCEPT
> and hosts.deny and hosts.allow are empty.
>
> 9. Write this email to Gluster-users mailing list and go home.
>
> --
> regards,
> Horacio Sanson
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