On 02/19/2010 11:34 AM, Eric Luyten wrote:
On Fri, February 19, 2010 4:13 pm, Patrick Boutilier wrote:
On 02/19/2010 11:03 AM, Marco van Putten wrote:
J. Roeleveld wrote:
Hi All,
I have been reading the thread about using "xfer" to migrate to a
different server or to use imapsync instead. Both methods appear to require
some additional work and I would prefer to simply copy the data across
instead of using synchronization tools on live servers. (It's not a
requirement to keep the email accessible during the transfer)
I have around 21GB of mail to copy across and was wondering how best to
do this. The mail server can (and most likely will) be stopped during the
transfer.
Will it be sufficient to simply copy the "/var/imap" and
"/var/spool/imap"
folders across? The contents of "/var/spool/imap" are all the emails and
the db-files and such appear to be in "/var/imap"
I've done the copy method several times without loosing any mail.
In all cases after stopping the mail services before the copy action.
Don't know if its the best/preferred/nicest method but it works for me...
+1
I have always used rsync in the past. 21G of mail shouldn't take much
time to move.
In August-September 2009 I rsync'd a 3.5 TB Cyrus mail store, 35 million msgs.
The final incremental rsync required a 10 hour (overnight) service halt.
rsync always has that huge startup time where it scans the files on the
source to determine what needs to be copied. I have found that if the
source has a lot of RAM that time can be reduced by running a couple of
rsyncs in succession then running the final one right afterwards (with
mail server shutdown). I find that a lot of the files are in cache at
that point and the startup time can be reduced significantly.
Eric.
----
Cyrus Home Page: http://cyrusimap.web.cmu.edu/
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fn:Patrick Boutilier
n:Boutilier;Patrick
org:;Nova Scotia Department of Education
adr:;;2021 Brunswick Street;Halifax;NS;B3K 2Y5;Canada
email;internet:boutilpj@xxxxxxxxxxx
title:WAN Communications Specialist
tel;work:902-424-6800
tel;fax:902-424-0874
version:2.1
end:vcard
----
Cyrus Home Page: http://cyrusimap.web.cmu.edu/
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