Shared disks

W Bauske wsb at
Thu May 9 14:51:54 PDT 2002

Try mounting them both rw and see what happens. I would guess the code
sees ro and thinks nothing can change so never bothers looking at the
FS again for new changes.

Don't think I'd run it that way but at least it might shed some light.


Jon Hittner wrote:
> Hi,
> Im not sure if what Im trying to do is possible under linux and if so, I
> thought that beowulf might be a posible solution.
> I just got a Hitachi 9200 Fibre disk array, and I hooked it up to two
> of my linux servers.  I created a raid set, set it up, and I can mount it
> from both systems fine.  What I want to do is mount the disk rw on one
> system and ro on the other. So the Second system can process data that
> the first one collects.  NFS is much too slow for our use.
> What is happening, is that the only way I can see changes I make on the
> other system, is to umount and then remount the ro volume on the second
> system. Until I do that, new files never show up, and deleted ones never
> disapear.  After I remount, then I can access all the files with no
> problem.    I have tried several filesystems (reiserfs,ext2,ext3) and I see
> the same problem.
> Am I missing a mount option or something?  Is this even possible? Is there
> anyting in Beowulf that would help?
> Thanks,
> Jon
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