Florin Andrei wrote:
I'm currently using two IMAP accounts, one on Cyrus-2.2 the other on
Cyrus-2.3.
The one on Cyrus-2.3 will get decomissioned so I need to transfer all my
email, preserving the folders/subfolders tree, under a specific folder
(oldmail/foo/bar) on the 2.2 server.
You need imapsync or similar if you are in a multimaster situation
(syncing changes made to *both* ends) or if the IMAP server software
differs, but if you have shell access to cyrus on both ends, rsync
(literally) should work fine. If the folder is quiescent and you're
using platform-independent skiplist databases, then you shouldn't even
need to run reconstruct.
A few months ago, I rsync'd 500GB of mail from Solaris/vxfs/Cyrus 2.2 to
Linux/ext3/Cyrus 2.3 with 15 minutes' downtime, reorganizing the
partitions a bit along the way.
Old server: partitions /var/spool/imap (partition-default),
/var/spool/imap1 (partition-1), /var/spool/imap2 (partition-2),
/var/spool/imap0 (partition-0).
"partition-0" caused various problems with cyradmin (0 is false to
perl), so I renamed it to partition-3 on the new server. At the same
time, I renamed partition-default to partition-4.
New server: /var/spool/imap{1,2,3,4} (partition-{1,2,3,4}). New server
also has metapartition_files: squat with all squat indices stored on a
low-cost SATA LUN.
After rsyncing the mail partitions, imap/user, and imap/sieve
directories (several times over several days, with services stopped for
a final incremental sync early one morning), I just needed two minor
changes to mailboxes.db. Permissions s/lrswipcda/lrswipkxtea/g, and
prepend "0 " to the the partition column (murder node, I guess).
#!/usr/bin/perl
# mbxlist.pl -- translate mailboxes list from cyrus 2.2 to 2.3 format
unlink "mailboxes.db";
open OLD, "ssh cyrus@old-server /opt/cyrus/bin/ctl_mboxlist -d |";
open NEW, "| /usr/lib/cyrus-imapd/ctl_mboxlist -u";
while (<OLD>) {
($mbox,$part,$acl) = $_ =~ m/^([^\t]+)\t([^\t]+)\t(.+)\n/;
$part =~ s/ +//g;
$part eq '0' and $part = 4;
$part eq 'default' and $part = 3;
$path = $mbox;
$path =~ s#\.#/#g;
@subdirs = split /\//, $path;
$path = "/var/spool/imap${part}/$path";
if (! -e "$path/cyrus.header") {
# There were some empty directories/invalid mailboxes on the
# old server, legacy of previous sysadmin errors. Skip those.
warn "No $path for $mbox\n";
next;
}
$dir = shift @subdirs; # drop leading /user/
$start = "/var/spool/imap-meta/$part/user";
while ($dir = shift @subdirs) {
$start = "$start/$dir";
mkdir $start;
}
print join("\t",$mbox,$part,$acl) . "\n";
$acl =~ 's/lrswipcda/lrswipkxtea/g';
print NEW join("\t",$mbox,"0 $part",$acl) . "\n";
$i++;
}
if ($i < 32000) {
die "FATAL: Too few mailboxes!\n";
} else {
exit 0;
}
--
Rich Graves <rgraves@xxxxxxxxxxxx>
Sr UNIX and Security Administrator
Ofc 507-646-7079 Cell 952-292-6529
----
Cyrus Home Page: http://cyrusimap.web.cmu.edu/
Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
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