[Ocfs2-devel] 40TB RAID and OCFS2 woes (inode64, JDB2, huge partition support, Volume might try to write to blocks beyond what jbd can address in 32 bits)

[Joel Becker <Joel.Becker@oracle.com>]

On Fri, Jan 01, 2010 at 04:36:02AM +0900, Robert Smith wrote:
> Oh, I found it at line #2163 of fs/ocfs2/super.c.
> 
> I imagine that something as simple as the following would work, but perhaps I'll wait for your feedback.
> 
> 
> /*
>         if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1)
>             > (u32)~0UL) {
>                 mlog(ML_ERROR, "Volume might try to write to blocks beyond "
>                      "what jbd can address in 32 bits.\n");
>                 status = -EINVAL;
>                 goto bail;
>         }
> */

	That should work.  The real solution will check based on the
journal flags.  Be warned, there be tygers in here.

Joel

-- 

"But all my words come back to me
 In shades of mediocrity.
 Like emptiness in harmony
 I need someone to comfort me."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127