[Lustre-discuss] Mounting Lustre as an ext3 partition

[Johann Lombardi]

On May 13, 2009, at 11:13 AM, Nick Jennings wrote:
> I just wanted to check if there would be problems with mounting a
> Lustre filesystem as ext3 and reading/writing to it. Would there be  
> any
> corruption or other unwanted effects to the data integrity?
>
> If we encounter any issues with Lustre, a backup plan would be to  
> mount
> the volume as ext3 and serve the files (for example via NFS) as a
> temporary solution in an emergency.

I'm not sure to understand how you want to do this, given that data and
metadata are stored on separate ext3 filesystems (MDT & OSTs).
If you mount the MDT locally as a ext3 fs and export it via NFS, you  
will
only see empty files.

Johann