[DRBD-user] Three-way replication setup

Lars Ellenberg lars.ellenberg at linbit.com
Wed Jun 6 11:34:04 CEST 2012

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Tue, Jun 05, 2012 at 06:25:03PM +0200, Luca Fornasari wrote:
> -------- Original Message --------
> Subject: Re: [DRBD-user] Three-way replication setup
> From: Felix Frank <ff at mpexnet.de>
> To: Luca Fornasari <luca.fornasari at upprovider.it>
> CC: drbd-user at lists.linbit.com
> Date: 06/05/2012 06:11 PM
> >In my setup I can see the upper layer resource on "primary" and "backup"
> >but have no idea how to access the resource on "secondary" in case
> >primary crashes.
> >Shoul I access the lower layer resource on "secondary" (after promoting
> >it to primary)?
> >no. After promoting the lower layer resource, you (or rather, your
> >cluster manager) configures the upper level resource on the respective
> >node and makes it primary.
> >
> >The remote node ("backup") connects to a floating IP that also migrates
> >to the second node.
> >
> >Hope that makes things a little clearer.
> >
> >Cheers,
> >Felix
> It now makes sense to me.
> Unluckly I have to renounce to the clustering features offered by
> Proxmox and use some "manual" procedure.
> That's anyway acceptable in my scenario where disaster recovery is
> the main goal.

Have a look at the thread "Enabling a stacked resource - HELP!"
of September 2011.  You may find some of it useful.

: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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