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Re: [Xen-users] remus vs. pacemaker/drbd?

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Subject: Re: [Xen-users] remus vs. pacemaker/drbd?
From: "Donny Brooks" <dbrooks@xxxxxxxxxxxxxxxx>
Date: Tue, 07 Sep 2010 14:01:40 -0500
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 I too would like to hear from anyone that has xen and remus in a production 
Donny B. 
On Tuesday, September 07, 2010 11:46 AM CDT, Miles Fidelman 
<mfidelman@xxxxxxxxxxxxxxxx> wrote: 
> Greg Woods wrote:
> > On Tue, 2010-09-07 at 09:28 -0600, Nick Couchman wrote:
> >    
> >> Pacemaker/DRBD, on the other hand, just synchronizes the data,
> >> and if it detects that one of the domUs has died, starts it up somewhere 
> >> else.
> >>   So, with Remus, the theory/goal is 0 downtime of your domU, whereas 
> >> Pacemaker
> >> simply minimizes downtime to a certain point - the time it takes to detect 
> >> failure
> >>   and boot the new domU.
> >>      
> > Actually, pacemaker can do live migrations with some limitations. If the
> >
> > I have no experience with Remus, but from Nick's description of it, it
> > sounds like Remus might be a whole lot easier to set up and may be a
> > good way to go if all you care about is failover for your domU's, or if
> > you really need instantaneous failover in the event of a server crash.
> >    
> All of this is well and good, but not to the point.
> I'm using pacemaker and DRBD.  It works.  it's just a pain.
> Has anybody on this list actually used Remus in production?  Is it ready 
> for prime time?  Or is it still beta (or alpha)?
> Miles
> -- 
> In theory, there is no difference between theory and practice.
> In<fnord>  practice, there is.   .... Yogi Berra
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