[DRBD-user] Enabling a stacked resource - HELP!

Lars Ellenberg lars.ellenberg at linbit.com
Thu Sep 8 18:23:35 CEST 2011


On Thu, Sep 08, 2011 at 09:07:25AM -0700, SlingPirate wrote:
> 
> Sorry about this it's just that I want to be absolutely certain.
> 
> With the 3 node setup i could have both node 1 & node 2 reading & writing at
> the same time?
> 
> Both local nodes would 

No, of course not.  And that is not needed.
How about one DRBD per VM backing store block device?

But if you insist on the complexity of using image files on some cluster
file system on dual primary DRBD, with proper fencing, of course,
that's your call.  That would not necessarily help to improve your
availability, or performance, though.

> Lars Ellenberg wrote:
> > 
> > On Thu, Sep 08, 2011 at 08:47:12AM -0700, SlingPirate wrote:
> >> 
> >> If I want to run VMs on both node 1 & node 2 they would need to be setup
> >> as
> >> dual primaries, is this not the case?
> > 
> > No.
> > 
> >> What I was trying to achive was two on-site servers that could fail over
> >> to
> >> one another OR in case both die node 3 runs all the servers (rather
> >> slowly
> >> of course!)
> > 
> > Do a "classic" stacked three node setup.
> > 
> >> Sorry for my ignorance but I dont quite understand your diagram for the
> >> alternative.
> > 
> > No need anymore...

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

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