upgrade from cyrus imapd 2.3.11 to 2.4.9

Henrique de Moraes Holschuh hmh at debian.org
Fri Jun 24 22:50:08 EDT 2011

On Fri, 24 Jun 2011, Patrick Boutilier wrote:
> On 06/24/2011 04:22 PM, Bron Gondwana wrote:
> > On Fri, Jun 24, 2011 at 03:32:50PM -0300, Patrick Boutilier wrote:
> >> I was planning to an upgrade from 2.3.16 to 2.4.9 by just shutting
> >> down Cyrus, installing new binaries, and then starting Cyrus again.
> >> This worked fine in limited testing (one account).
> >
> > The only issue is that every first mailbox access causes an in-place
> > upgrade which requires a full scan of every email, so it can hurt
> > pretty bad for IO.
> This is why I decided to wait until the end of the school year (next 
> week) to do the upgrade. :-)

And you can force the "IO hit" to happen at a convenient time by forcing
a reconstruct on the mailboxes you want to upgrade immediately (but be
careful with which flags you pass to configure).

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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