[Users] Can't add NFS domain

[Changsen Xu]

On Tue, 2012-09-04 at 08:19 +0200, Damiano Verzulli wrote:
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> (so you've switched discussing on the list. Ok. Let's go this way)
> 
> Il 04/09/2012 07:45, Changsen Xu ha scritto:
> > [...] I just got vdsm compiled and installed on fresh FC17 (installed
> > with live cd), used your 3.4.9 FC16 kernel. Yes, now, engine can add
> > it as host, great. But engine still can't add NFS domain. Any idea
> > what is happening?
> 
> To correctly troubleshoot your issues, please, ensure you're following
> _all_ the steps suggested here:
> 
>     http://wiki.ovirt.org/wiki/Troubleshooting_NFS_Storage_Issues
> 
> In particular:
> 
> 1 - confirm your node are running the 3.4 kernel (uname -a), as
> installing the new kernel is not enough. Such kernel _must_ be running;
> 
> 2 - confirm that your NFS server is configured:
> 	- to default to NFSv3 (refer to above wiki page);
> 	- with a correct export (refer to above wiki page). Please pay attention
> to the need of having, on the NFS server, a USER with UID 36. Best if
> related username is "vdsm";


I've playing with this problem for several days, done every step
I can find on internet, just can't figure out why.

On my node/host, if I "su - vdsm -s /bin/bash", I can't
never use mount. It always complained only root can use mount.

I can use root to mount nfs server manually, but just can't add
NFS domain in the engine side. I tried both ovirt 3.1 and 3.0, neither
worked.

I used /etc/hosts file on all engine, hosts, nfs server. Should I use
DNS ?




> 
> 3 - confirm that your FC17-nodes can "see" the exported mounts from the
> NFS server by running, on the nodes:
> 	# showmount -e <ip_addr_of_the_NFS_server>
> 
> 
> When all of above steps are confirmed, you can start troubleshooting
> file-permission issues. In detail:
> 
> 4 - from the FC17-node, manually mount the NFS share with something like:
> 	# mount -t nfs <NFS_server_ip_addr>:<NFS_mount> <temp_mount_point>
> (in my case: mount -t nfs 10.0.49.14:/storage/NFS /tmp/test_nfs)
> and then try to:
> 	- write a file in /tmp/test_nfs:
> 		# touch /tmp/test_nfs/test_file.txt
> and rightafter check, on the NFS server, its ownership/permission. As
> said in the wiki page, the test_file.txt should be owned by "UID 36" user
> and should have 755 file-permission
> 
> 5 - when the all of this is (succesfully) completed, you can retry adding
> the NFS ISO-domain from the Engine.
> BTW: if a previous addition attempt failed, in my case I needed to
> manually remove, on the NFS server, the file/directory structure that
> previous attempts generated.
> 
> HTH
> 
> Bye,
> DV
> 
> P.S.: please, let's stick discussing on the list.
> 
> - -- 
> Damiano Verzulli
> e-mail: damiano at verzulli.it
> - ---
> possible?ok:while(!possible){open_mindedness++}
> - ---
> "Technical people tend to fall into two categories: Specialists
> and Generalists. The Specialist learns more and more about a
> narrower and narrower field, until he eventually, in the limit,
> knows everything about nothing. The Generalist learns less and
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> nothing about everything." - William Stucke - AfrISPA
>   http://elists.isoc.org/mailman/private/pubsoft/2007-December/001935.html
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