[dm-devel] Help needed with RDAC in production environment!!

[S. J. van Harmelen]

Thanks for the explanation. I had some troubles before, so I was afraid
that there was a problem with multipath/RDAC. Fortunately it turned out
to be something else...

And indeed, when sending some I/O only one of the paths became active :)

Sander


On Thu, 2007-11-15 at 08:33 +0100, Tore Anderson wrote:
> * S. J. van Harmelen
> 
> > See the xen and vmware disks. They both display enable / enable instead
> > of active / enable. Is this correct? Or is a disaster waiting to happen?
> 
> If I understand correctly, "enabled" means something like "ready to use,
> but not in active use".  The preferred PG will become active ("in active
> use") once you send some I/O there.  Try "dd if=/dev/mapper/wmware
> of=/dev/null count=10" or something like that, see if they go active then.
> 
> The semantics had me confused for a while too.  :-)
> 
> Regards