Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars, Thanks for the info. It makes sense that you can have an Active - Active on the top layer, but not on the bottom two layers. It wasn't immediately obvious in the documentation. Currently, I'm just investigating into what DRBD can do, so I don't have a particular implementation in mind yet. Thanks, Kim On 01/05/2012 05:50 AM, Lars Ellenberg wrote: > 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? >