[Gluster-users] XenServer and Glusterfs 3.1

[Shehjar Tikoo]

Davide Ferri wrote:
> I've the same issue.
> Of course it works (both nfsv3 and nfsv4) with the standard NFS
> deamon. If you share /media you can mount /media/subdir1 (if exists)
> without any change to the /etc/exports.

Thanks. I understand that now. Thats not hard to fix. We'll try 
squeezing it into 3.1.1 release.

-Shehjar

> 
> Davide
> 
> On Thu, Nov 11, 2010 at 11:47 AM, Shehjar Tikoo <shehjart at gluster.com> wrote:
>> Stefano Baronio wrote:
>>> Thank you Shehjar,
>>>    as we are planning to use glsuterfs in a production environment, we
>>> prefer to stay with the 3.1 stable version.
>>> As for now the port forwarding seems to work properly, because XenServer,
>>> after the testing step on port 2049,  correctly connects to the nfs share
>>> using the right ports.
>>> I just have the problem that I cannot mount a NFS share subdirectory.
>>>  XenServer, when creating the sr, makes a new directory (the sr uuid) just
>>> under the share root and put its VM file under that directory.
>>> When mounting that subdir, Glusterfs returns the "No such file or
>>> directory" error.
>> Thats because by default Gluster NFS only exports volumes as NFS exports not
>> the directories inside those volumes.
>>
>> How does this work with knfs? Even that will return the same error because
>> the newly created directory will not exist in /etc/exports.
>>
>> Thanks
>> -Shehjar
>>
>>
>>> Thank you
>>> Stefano Baronio
>>>
>>> 2010/11/11  Tikoo <shehjart at gluster.com <mailto:shehjart at gluster.com>>
>>>
>>>    Yes. That was a limitation on 3.1 release and is already fixed in
>>>    mainline. This support allows you to change the nfs port number that
>>>    Gluster NFS uses by default. It'll be available in 3.1.1 but if
>>>    you'd like to test right away, please use 3.1.1qa5 by checking it
>>>    out from the repository:
>>>
>>>    $ git clone git://git.gluster.com/glusterfs.git
>>>    <http://git.gluster.com/glusterfs.git>
>>>    $ cd glusterfs
>>>    $ git checkout -b v3.1.1qa5 3.1.1qa5
>>>
>>>    Then build and install.
>>>
>>>    To change the nfs port, locate the volume section nfs/server in
>>>    /etc/glusterd/nfs/nfs-server.vol and add the following line:
>>>
>>>    option nfs.port 2049
>>>
>>>    Note that this option is not yet available in the gluster CLI, so
>>>    you'll have to manually edit this file and restart the gluster nfs
>>>    daemon. Be careful while using that tool, because on a restart of a
>>>    volume using gluster CLI, your edited volume file will get
>>>    over-written with the default version.
>>>
>>>
>>>    Thanks
>>>    -Shehjar
>>>
>>>    Stefano Baronio wrote:
>>>
>>>        Hello all,
>>>         I'm new to the list and I'm working on glusterfs since a month
>>>        right now.
>>>        I'm posting a request about how to get XenServer working with
>>>        Glusterfs.
>>>
>>>        I have a standard setup of both XenServer and Glusterfs.
>>>        I can mount the glusterfs nfs share from the Xen CLI, write in
>>>        it and mount
>>>        it as an ISO library as well.
>>>        I just can't mount it for storage purpose.
>>>        It seems that XenServer is testing the NFS share directly to
>>>        port 2049,
>>>        without checking with portmapper.
>>>
>>>        I have tried to make glusterfs listen on port 2049 without any
>>>        success, so I
>>>        have setup a port forwarding on the gluster server.
>>>        Lets say:
>>>        xen01 - 192.168.14.33
>>>        xenfs01 (gluster nfs) - 192.168.14.61
>>>
>>>        The iptables settings are:
>>>        iptables -A PREROUTING -d 192.168.14.61 -p tcp -m tcp --dport
>>>        2049 -j DNAT
>>>        --to-destination 192.168.14.61:38467 <http://192.168.14.61:38467>
>>>        iptables -A FORWARD -d 192.168.14.61 -p tcp -m tcp --dport 38467
>>>        -j ACCEPT
>>>
>>>        Now XenServer can correctly test the gluster nfs share. It
>>>        creates the
>>>        sr-uuid directory in it, but it can't mount it, with the
>>>        following error:
>>>        FAILED: (errno 32) stdout: '', stderr: 'mount:
>>>        xenfs01:/xenfs/1ca32487-42fe-376e-194c-17f78afc006c failed,
>>>        reason given by
>>>        server: No such file or directory
>>>
>>>        Any help appreciated.
>>>        Thank you
>>>
>>>        Stefano
>>>
>>>
>>>
>>>
>>>  ------------------------------------------------------------------------
>>>
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>>>
>>>
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