[Pvfs2-users] metadata problems with pvfs-2.6.0

[Vikrant Kumar]

Hi,

This is the layout of the file system:
11 clients on deva{02-11}
8 servers on deva{04-11}, each node has four cores.

I created this file on deva02 and try to look for it on deva04, this is 
the error i get:

vsk at deva04:/mnt/pvfs2/vsk/fl5l2$ ls test.jou
ls: test.jou: Invalid argument

On deva02 it lists the file correctly. I have waited for much longer 
than 30 seconds for this(many minutes and now days). This does not 
happen always and usually things work fine. Im not sure what particular 
way to get this situation. I had to dig into the console history to get 
this output.

This is with a proprietary code, but I will try to send you some sample 
MPI code which shows a similar problem soon. We have used this code 
successfully with a previous installation of pvfs2-1.5, so looks like 
some installation issue or a bug in the current release.
Would the config files and configure options for this installation help 
you to identify if its an installation issue?

Thanks
Vikrant

Sam Lang wrote:
>
> Hi Vikrant,
>
> Along with MPI code, if you could send us the output of your shell 
> commands and the errors you see that would also be helpful in debugging.
>
> Thanks,
>
> -sam
>
> On Dec 20, 2006, at 11:44 AM, Robert Latham wrote:
>
>> On Wed, Dec 20, 2006 at 06:55:22PM +0530, Vikrant Kumar wrote:
>>> With MPI applications it fails at certain times in MPI_File_open on 
>>> some
>>> nodes, which again looks similar to the above problem.
>>>
>>> Can you guys suggest me how to isolate the problem?
>>> Let me know what information you require.
>>
>> Oh, one more thing that would help is if you can send us the MPI code
>> you are using.  If we can reproduce the problem on our end, that will
>> make debugging and fixing a lot easier.
>>
>> ==rob
>>
>> --Rob Latham
>> Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
>> Argonne National Lab, IL USA                 B29D F333 664A 4280 315B
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>