[Gluster-users] XenServer and Glusterfs 3.1

[Shehjar Tikoo]

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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