migrating Cyrus IMAPd from i386 to amd64 system

[Patrick Boutilier]

On 06/26/2010 11:38 AM, Jukka Salmi wrote:
> Patrick Boutilier -->  info-cyrus (2010-06-24 22:16:47 -0300):
>> How much data do you have to move?
>
> It's not that much, about 2--3 GiB, but my upstream is only 640 kbit/s,
> thus copying would take at least 8 hours or so...

What I did before my big move was copy mailboxes.db and one account to 
the new server. Logged into the IMAP account I moved on the new server 
to make sure all the mail was visible as well as the folders. That 
should tell you if a reconstruct will be needed or not.

>
>
>>> Some basic questions:
>>>
>>> - Is Cyrus on amd64 able to read skiplist files created by Cyrus on
>>>     i386?  (If not, I'd probably have to use cvt_cyrusdb(8) to dump and
>>>     restore the relevant files.)
>>
>> Pretty sure it can. I moved a 2.2.x i386 system to a 2.3.x x86_64 system
>> (Linux) a year ago.
>>
>>>
>>> - What about the cyrus.{cache,header,index,squat} files?  Can I expect
>>>     Cyrus on amd64 to be able to read them just fine?  (This seems not to
>>>     be that important since those files are easily recreated IIUC.)
>>>
>>
>> Same as above. In my move I didn't even have to run reconstruct.
>
> Thanks for the hints, I'll do the migration ASAP and will report any
> interesting problems in case there are any...
>
>
> Regards, Jukka
>