[Ocfs2-users] Problem with datavolume option

[Rafa Carreres]

Hi,

The facts

I have a cluster running Oracle RAC with two nodes accesing a shared 
storage using ocfs2 1.4.7 as a filesystem.
It has been working perfectly right until now.
We need to manage certain files with the utl_file package (included with 
oracle database) and store them in the ocfs2 filesystem volume.
The files can be created and accessed, but can't be read.
In fact, we can read the begining of the files, but after having read 
about 1 KB, I get a read file error.
If the file is <1KB size, I have no problem.
The volume is mounted with the nointr and datavolume options.
The utl_file package use a buffered I/O and for what I know, the 
datavolume option means using direct I/O (not buffered).
If I mount the volume without the datavolume option, the problem dissapears.

The conclusion

Using the oracle utl_file package with a ocfs2 volume mounted with the 
datavolume option is not a good idea.

I don't know if this behavior is the same with other applications (with 
buffered I/O). Can anybody confirm this point?

Best Regards