Upgrade 2.2 -> 2.4

[Ondřej Surý]

On Wed, Mar 30, 2011 at 10:07, Anthony Prades <toony.debian at chezouam.net> wrote:
> On 03/29/2011 09:25 PM, Henrique de Moraes Holschuh wrote:
>>
>> On Tue, 29 Mar 2011, Ondřej Surý wrote:
>>>
>>> I have just tested the upgrade from 2.2 to 2.4 on my server and it's
>>> still quite complicated even when the spool is empty :-(.
>>>
>>> We need to work on that since almost all cyrus-*-2.2 packages were
>>> left in the Install/Conf-files state and purging them removed some
>>> files from -2.4 packages.
>>>
>>> I'll try to do more serious testing, but it seems that we will need to
>>> upgrade scripts in 2.2 as well.
>>
>> Actually, I think we have some outstanding nastyness in 2.2 with
>> security implications that deserves a look as well, but I have not found
>> time to work on that at all.  It is all in the BTS.
>>
>> It is possible to use preinst to safeguard against installing without the
>> unfixed 2.2 packages, and avoiding data loss is a damn good reason to do
>> that.  OTOH, if all that happens is a broken package that --reinstall
>> can fix, we can probably document that in {NEWS,README}.Debian, plus the
>> upgrading docs.
>>
>
> Hi,
>
> during my personal test, I wrote preinst script to backup all Cyrus
> databases into "/var/backup". This is available there:
> https://github.com/toony/pkg-cyrus-imapd-2.4-toony/tree/debian-sid-upgrade
>
> I can commit this as a starting point.
>
> In all cases, I think that backuping before upgrade is a "damn good reason"
> too.

Well, I wasn't speaking about the databases (yet), but about files
which get removed by purging the 2.2 packages:

At least /usr/lib/cyrus/cyrus-db-types.active gets removed by postrm
script, also the statoverrides gets removed (which is bad)  - this is
just for cyrus-common and cyrus-imapd packages...  Full diff between
pbuilder states is attached. I'll try similar test for the rest of the
packages now and report back.

Ondrej
-- 
Ondřej Surý <ondrej at sury.org>
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