Re: Poor quality of multipath-tools
On Thu, Jul 06, 2006 at 08:07:16AM -0500, John Goerzen wrote:
> On Thu, Jul 06, 2006 at 02:39:16PM +0300, Pasi Kärkkäinen wrote:
> > Not always true. Both paths can be active at the same time.. if supported by
> > the SAN array. Then you do also load balancing between the paths..
> Quite true, though my impression is that this is much more rare. Our
> controller (HP MSA1500cs) seems to have added active/active controllers
> as a recent option.
> I'm not really sure if multipath-tools supports active/active
> controllers, though. Do you know?
Yes, active/active is working fine:
$ multipath -ll
\_ round-robin 0 [active]
\_ 0:0:1:0 sda 8:0 [active][ready]
\_ 1:0:1:0 sdc 8:32 [active][ready]
that's LUN from Equallogic iSCSI SAN array.. loadbalanced with round-robin.
Box is even booted from the SAN :) took some time to create the initrd
images to set up multipathing for boot/system volume..
-- Pasi Kärkkäinen
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