Re: 2.3 to 2.4 Murder upgrade

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On Fri, 14 Oct 2011, Dave McMurtrie wrote:

> On Oct 14, 2011, at 7:16 PM, Andrew Morgan <morgan@xxxxxxxx> wrote:
>
>> I finally have some time to work on upgrading our Cyrus Murder
>> installation from 2.3.16 to 2.4.12.  We have 3 backends, 3 frontends, and
>> a mupdate master, all separate systems.
>>
>> When I upgraded from 2.2 to 2.3, I had to upgrade the backends first.
>> Otherwise, the 2.3 frontends would issue commands that the 2.2 backends
>> didn't know yet.  I see the following note in the install-upgrade guide:
>>
>> Upgrading from 2.4.5
>>
>>     New config option: suppress_capabilities, which takes a space
>> separated list of capabilities which will NOT be given in any imap
>> capability response. This can be used on frontends to not display
>> capabilities that older backends don't have, so clients don't get confused
>>
>>
>> This leads me to believe that I should upgrade the backends to 2.4 first.
>> Is that true?  Has anyone done a Murder upgrade from 2.3 to 2.4 and can
>> tell me what order they upgraded the hosts?
>>
>
> Yes, you'll want to upgrade the frontends first and suppress the new 
> capabilities on the frontends that the old backends aren't yet aware of.

Hmmm, how do I know which capabilities to suppress?  Should I just compare 
the CAPABILITY response from a 2.3 and a 2.4 server?

Thanks,
 	Andy
----
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