[Gluster-users] Please Help- XenSever - "The NFS server version is unsupported Check your settings and try again"

[Daniel Kradolfer]

Hi Matt,

gluster is listening on port 2049. that's ok. the storage servers has to 
be able to lookup hostnames of the IPs connecting to gluster nfs server. 
if gluster-node isn't able to resolve xen-servers hostname, connection 
will fail.

Dani


Am 13.02.2012 17:13, schrieb Matthew Mackes:
> Hi Dan,
>
> Thanks for your reply.
>
> I am able to ping and ssh the server from all Xen Host machines in the
> Xen pool. It seems to be up, and reachable at the OS level.
>
> Here is the output from lsof:
> glusterfs 1466  root    8u  IPv4  79120      0t0  TCP *:2049 (LISTEN)
>
> I think that Gluster is responding on this machine because Xen is
> reporting " The NFS server version is
> unsupported." I think that Xen would report something else if it could
> not contact the machine at all.
>
> Thanks Dan, please keep brainstorming! I appreciate it!
>
> Matt
>
>
>
> On Mon, Feb 13, 2012 at 11:01 AM, Daniel Kradolfer<ml at smilesolutions.ch>  wrote:
>> Hello Matt
>>
>> the storage server has to be able to resolv the ip-address of the
>> xen-server. this may be a problem. i also had problems to get gluster really
>> listening on port 2049. if 'lsof -i -n -P | grep 2049' doesn't show gluster
>> listening on this port, I would reboot the whole cluster.
>>
>> Freundliche Grüsse
>>
>> Daniel Kradolfer
>>
>>
>> Am 13.02.2012 16:48, schrieb Matthew Mackes:
>>
>> Hello Everyone,
>>
>> I am having an issue that I hope someone might have some information about.
>>
>> I have a Xen Server Version 6 Host Cluster that I am attempting to use
>> Gluster as the NFS storage repository for.
>>
>> I have two Gluster storage servers, both are running the latest
>> stable, and CentOS 6.2.
>>
>> Both Gluster storage servers are setup for Replicated Volumes, and are
>> working well.
>>
>> In order for XenServer to allow me to mount the Gluster NFS, I have
>> set using one of the Gluster Machines (The first) to port 2049. This
>> change instantly replicated to the second Gluster server in the pool.
>>
>> (First server (Working with Xen))
>> gluster>  volume info
>>
>> Volume Name: xen-volume
>> Type: Replicate
>> Status: Started
>> Number of Bricks: 2
>> Transport-type: tcp
>> Bricks:
>> Brick1: 10.10.135.10:/BRICK-STORAGE
>> Brick2: 10.10.135.11:/BRICK-STORAGE
>> Options Reconfigured:
>> nfs.port: 2049
>> gluster>
>>
>> (Second server (Not Working with Xen-"The NFS server version is
>> unsupported Check your settings and try again" )
>>
>> gluster>  volume info
>>
>> Volume Name: xen-volume
>> Type: Replicate
>> Status: Started
>> Number of Bricks: 2
>> Transport-type: tcp
>> Bricks:
>> Brick1: 10.10.135.10:/BRICK-STORAGE
>> Brick2: 10.10.135.11:/BRICK-STORAGE
>> Options Reconfigured:
>> nfs.port: 2049
>>
>>
>> Here is the issue.
>>
>> If I attempt to mount the first Gluster storage server in the Xen
>> Administrative Console (Xen center), the Scan button reports an NFS
>> error, but if I choose finish, it does mount the storage, and it works
>> very well. The vm's also replicate to the second gluster storage
>> server.
>>
>>   If I attempt to mount the second Gluster storage server in the Xen
>> Administrative Console (Xen center), I receive the error back:
>>
>> "The NFS server version is unsupported Check your settings and try again.:
>>
>> I receive this error for the second server, even when:
>> 1. The first server was never mounted
>> 2. Both servers are a clean new installs, and contain no data.
>> 3.Both installs are CentOS base installs, and I add in packages as I need
>> them
>>
>> So, the first server always mounts (but with an error during the test
>> scan), the second never does, giving the error NFS version is
>> unsupported.
>>
>> *The second server also cannot be mounted as a ISO NFS share.
>> * The second server also cannot be mounted on a normal Fedora 16
>> workstation (My workstation).
>> It seems as if once the NFS port has been changed in Gluster the
>> second server (in replication) becomes inaccible via NFS)
>>
>>
>> I hope someone has some ideas. Thank you everyone for reading and your help.
>>
>> Matt
>>
>
>
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