For email email am having the email duplication issue when am doing the backup. Am having multiple copies of a mail file on the backup server.
Does it mean that if I use "--fuzzy --delete-after" only the most recent mailfile will be on the backup server ??
e.g On LIVE server : my-file:2,S On BACKUP server : my-file:2,S + my-file:2, + my-file:2,SF
"my-file:2,S" is the current file. So on the backup only "my-file:2,S" must exist. Will it solve the prob ??
To: dovecot@dovecot.org From: sb@dod.no Date: Fri, 29 Jan 2010 08:58:27 +0100 Subject: Re: [Dovecot] Anyone successfully setup Continous Backup of mailboxes using rsync ?
Timo Sirainen <tss@iki.fi>:
The main potential problem with that is that if a message's flag is changed, the filename changes so it's now stored twice in the backup server. So when restoring mails, be sure not to restore duplicates.
I use the --fuzzy flag to handle the renaming issue. Here's my crontab entry on the machine holding the backup: 0 * * * * rsync --archive --fuzzy --delete-after imapserver:Maildir .
As you can see I only sync once an hour. I don't have enough email traffic to justify doing it continously.
The --delete-after is so rsync won't delete files that have been removed on the source, before figuring out that a file has been renamed and not been deleted.
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