Re: Replication to more than one replica?

From: Per olof Ljungmark (no email)
Date: Fri Aug 10 2007 - 10:52:39 EDT

  • Next message: David Carter: "Re: Replication to more than one replica?"

    Rob Mueller wrote:
    >> Could you do it then with sync_client -S -u instead of -r to one of
    >> the relicas?
    >
    > -u User mode. Remaining arguments are list of users who
    > should be replicated.
    >
    > Which user though? You could do all users, but that takes time.
    >
    > The point is that cyrus programs (lmtpd, imapd, etc) log actions that
    > change mailboxes, so you know exactly which mailboxes need syncing. It's
    > those logs you have to "play" twice to apply to two replicas to keep
    > replication as close as possible to real time.

    It would be a way to keep a second offline replica for backing up to a
    tape archive, which is what I plan to do. I realize it's slower than the
    standard rolling replication but the archive is mainly for "ooops I
    deleted that mail" kind of scenario. In fact, I'm testing the setup
    right know with a list of all users. First run will take a while but
    further ones should only take a couple of minutes.

    Of course this setup is a workaround and it gets increasingly more
    difficult with the number of users, here we only have around 500
    although many mailboxes are quite large.

    Per olof

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  • Next message: David Carter: "Re: Replication to more than one replica?"





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