Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, Jan 04, 2012 at 04:17:27PM -0700, Kim Ebert wrote:
> Is it possible to have an active active configuration using stacked
> resources?
>
> This wasn't clear to me in the documentation.
>
> Something like,
>
> Node A Active \
> Node B / R0
> Node C Active \
> Node D / R1
>
> R0 Active \
> R1 Active / R2
>
> Access stacked resource at R2.
Works, but, as always, with dual primary,
you have to get the fencing and stonith right!
[pri] <----> [pri]
| |
v v
[sec] <----- [pri] [pri] -----> [sec]
Depending on your requirements,
the latency behaviour will look bad, though.
Does not work:
[pri] <----> [pri]
| |
v v
[pri] <----> [pri] [pri] <----> [pri]
As changes originating on the leaves
can not travel to the other end.
What would you like to do?
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.