Minutes March 2nd

[Bron Gondwana]

On Tue, Mar 10, 2015, at 12:05 AM, ktm at rice.edu wrote:
> On Mon, Mar 09, 2015 at 11:36:36PM +1100, Bron Gondwana wrote:
> > TODO: we need to nail down what's in 3.0 (you'll see a theme here over the next two lots)
> > 
> 
> Hi,
> 
> I just wanted to keep a note in the feature request list about supporting a way to
> update from version 2.3.x to a current release without the need for an unconstrained
> I/O storm caused by the forced mailbox format upgrades. We are still using version
> 2.3 because an update to 2.4 would cause mailboxes to be converted on first access.
> If we could upgrade the replica first and then make it the primary after the
> upgrade had completed and then upgrade the replica to complete the process, we
> could do it. Alternatively, if the new version could use the old version of the
> mailbox, we could then control the format update I/O usage.
> 
> Regards,
> Ken
> (stuck on version 2.3)

You'll be pleased to know, there is no IO storm in 2.5.0, even upgrading from 2.3.  Instead,
you need to run "reconstruct -V max" to upgrade your indexes.  Until you upgrade them,
you lose delayed expunge (it expunges all mailboxes instantly when you first open them,
because that's too complex to support otherwise).

Bron.

-- 
  Bron Gondwana
  brong at fastmail.fm