[Lustre-discuss] NFS Export Issues

[Kevin Van Maren]

But the client is doing a lstat on /mnt/lustre_mail_fs, not /mnt/ 
lustre -- what is the mount command again?


On Jul 16, 2010, at 6:50 PM, William Olson <lustre_admin at reachone.com>  
wrote:

> On 7/16/2010 5:41 PM, Kevin Van Maren wrote:
>> Looks like a problem with your mount point.  What are the  
>> permissions on the client directory?
>>
> NFSServer/Lustre Client
>
> Lustre mounted:
> drwxrwxrwx 29 root root 4.0K Jul 12 17:03 lustre_mail_fs
> Lustre not mounted:
> drwxrwxrwx 2 root root 4.0K Jun 10 13:26 lustre_mail_fs
>
> NFSClient mount dir:
> drwxrwxrwx  2 root root 4.0K Jul 12 15:09 lustre
>
>>
>> On Jul 16, 2010, at 6:23 PM, William Olson  
>> <lustre_admin at reachone.com> wrote:
>>
>>> On 7/16/2010 5:12 PM, Andreas Dilger wrote:
>>>>
>>>>> Well that improved the debug level, but didn't reveal any -2  
>>>>> errors..   In fact I can't seem to find a line with an error in  
>>>>> it... Is there a specific verbiage used on error lines that I  
>>>>> can grep for?  90% is "Process entered" or "Process leaving"...
>>>>>
>>>> You could try "strace -f" on the mount process, to see which  
>>>> syscall is failing.  It may be failing with something before it  
>>>> gets to Lustre.
>>>>
>>> Results of strace below:
>>>
>>> [root at lustreclient mnt]# strace -f -p 15964
>>> Process 15964 attached - interrupt to quit
>>
>>
>>
>>> lstat("/mnt", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
>>> lstat("/mnt/lustre_mail_fs", 0x7fff4bd4b2b0) = -1 EACCES  
>>> (Permission denied)
>>> stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2875, ...})  
>>> = 0
>>
>>
>