[Pacemaker] Pacemaker 1.0.x, Debian, and upgrades from Heartbeat 2.1.x

[Dejan Muhamedagic]

Hi,

On Thu, Nov 26, 2009 at 08:16:26PM +0100, Andrew Beekhof wrote:
> On Thu, Nov 26, 2009 at 2:28 PM, Florian Haas <florian.haas at linbit.com> wrote:
> > Andrew and everyone,
> >
> > apologies upfront if this is turning into a rant. This has been somewhat
> > bothering me for a while.
> >
> > A bit of backdrop.
> >
> > - The docs
> > (http://www.clusterlabs.org/doc/en-US/Pacemaker/1.0/html/Pacemaker_Explained/apes03s02.html)
> > have claimed for a while that Pacemaker 1.0.x is compatible with
> > Heartbeat 2.1.3 (aka Pacemaker 0.6). Thus it ought to be safe to expect
> > to be able to do rolling upgrades from 2.1.3/2.1.4 to 1.0.x.
> 
> Yes, I anticipated it too when I was releasing 1.0.0
> In fairness the wiki has been correct since April when I encountered the issue.
> 
> [snip]
> 
> > Because, quoting from the documentation, rolling upgrades are "currently
> > broken between Pacemaker 0.6.x and 1.0.x. If there is sufficient demand,
> > the work to repair 0.6 -> 1.0 compatibility will be carried out."
> >
> > I firmly believe there is sufficient demand. I therefore ask that this
> > breakage be fixed. Perhaps other Debian users can second that request of
> > mine.
> 
> What I don't understand, if such demand exists, is why I'm not hearing
> more about it.
> Since 1.0.0 came out over a year ago, I've had exactly 4 people
> complain about the problem (and only half of those had actually
> performed an upgrade and encountered the problem).
> 
> I even explicitly pointed out the problem and asked for people's
> feedback as to whether it was important.
> To date that thread has zero replies in 7 months.
> 
> The occams-razor explanation would seem to be that cluster admins
> simply don't do rolling upgrades between major versions.

> Perhaps you can convince lmb to fix it, I think he had thoughts of
> using that capability.
> But hey, if hoards of people suddenly turn up saying they simply must
> have rolling upgrades to 1.0 I will of course work on it myself.

Perhaps they simply never tried to upgrade. What Florian was
saying is that once people start upgrading to the new Debian
release, they will run into problems here. So, hoards may turn
up, but it may already be too late then.

BTW, can't we modify hb2openais and use that? It should have most
bits in.

Thanks,

Dejan

> 
> _______________________________________________
> Pacemaker mailing list
> Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker