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- In reply to: Giuseppe Ravasio: "Migration 32 to 64 bit"
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From: Alain Spineux (no email)
Date: Mon Nov 26 2007 - 07:55:24 EST
On Nov 26, 2007 11:04 AM, Giuseppe Ravasio <> wrote:
> Hi,
> I'm planning the migration of our main cyrus server.
> Actually the server is running cyrus imap 2.2.3 on a SuSE 9.1 i586, with about
> 130Gb of mailboxes.
> My idea is moving to OpenSuse 10.3 with cyrus 2.3.8 on 64bit System.
>
> I googled a bit, but i couldn't find anything useful; i would like to know if
> there are issues moving from 32bit to 64bit and/or moving from 2.2.3 to 2.3.8
> In particular i would like to minimize users impact, preserving mailstores,
> subscriptions and all seen status.
>
> Any hints/comments/precautions???
The rule of thumb is: copy all the data and try if it works (on a
testing system)
, and look in the log file for error messages !
If it don't work, solve problems one by one.
Some thinks to take care:
- the new features on 2.3.8 you want to use, or the changes you want
to make for yourself.
- change of the directory hashing.
- Their is a lot of db : man imapd.conf | grep db
* some of them can be forgotten, and will be recreated at first
start like duplicate_db, tlscache_db
* other could be migrated silently or don't need migration (maybe
all skiplist files)
* other will require a dump on the old system and the use of an
intermediate file format before
to be restored on the new one. (probably most of the berkeley db
files). Use ctl_mboxlist for mailboxes.db
and try cvt_cyrusdb with flat format for others.
* to know the db format you use for any files, look for defaul in
"man imapd.conf", check if you overwritten it
in your imapd.conf and get confirmation using "file" utility.
Regards
>
> Thanks
> G.Ravasio
> ----
> Cyrus Home Page: http://cyrusimap.web.cmu.edu/
> Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
> List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
>
-- Alain Spineux aspineux gmail com May the sources be with you ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
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