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

[Matthew Mackes]

Hello Everyone.

I found the solution. Maybe this will help someone in the future. In
CentOS 6.x,  'portmap' was replaced by 'rpcbind'

The rpcbind (and its dependency's) needs to be installed and the
service started. Then Gluster needs to be restarted.

I built my servers from the most basic install option on the CentOS 6
disks and then added what I thought I needed. Now I know we need
rpcbind for CentOS 6.

Thanks everyone,

Matt

On Mon, Feb 13, 2012 at 2:30 PM, Matthew Mackes
<matthewmackes at deltasoniccarwash.com> wrote:
> Hi Dan,
>
> So I took your advice, and I have added all of the machines- 2 Gluster
> Storage Machines, and 6 Xen Host Machines to each machines hosts file.
> Now all machines are pingable by name.
>
> I am afraid that did not correct the issue.
>
> I have a more basic question. Should both machines be reachable via
> NFS if they are set to replicate between the two.
>
> Because I'm not sure this is as much a Xen issue, more over I am
> unable to connect to the second machine once I have changed the port
> number (to meet the Xen requirement)
>
> Thoughts?
>
> Matt
>
>
> On Mon, Feb 13, 2012 at 1:17 PM, Daniel Kradolfer <ml at smilesolutions.ch> wrote:
>> 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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>> Gluster-users at gluster.org
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>>
>
>
>
> --
> Matthew Mackes
> Delta Sonic CWS, Buffalo N.Y.
> 716-541-2190
>
> ---------------------------------------------------------------
> The Steps to solve any problem (Scientific Method):
>
> 1. Ask a Question
> 2 .Do Background Research
> 3. Construct a Hypothesis
> 4. Test Your Hypothesis by Doing an Experiment
> 5. Analyze Your Data and Draw a Conclusion
> 6. Communicate Your Results
> ---------------------------------------------------------------



-- 
Matthew Mackes
Delta Sonic CWS, Buffalo N.Y.
716-541-2190

---------------------------------------------------------------
The Steps to solve any problem (Scientific Method):

1. Ask a Question
2 .Do Background Research
3. Construct a Hypothesis
4. Test Your Hypothesis by Doing an Experiment
5. Analyze Your Data and Draw a Conclusion
6. Communicate Your Results
---------------------------------------------------------------