On Jul 25 2012, [email protected] wrote:
Chris Buxton <[email protected]> wrote on 07/25/2012 12:07:22 PM:
> It doesn't sync the files to make two equal copies. It applies all of
the
> outstanding transactions in the journal file to the zone file and then
> empties the journal.
I don't believe that is entirely correct. The journal file needs to
be retained to support ixfrs. My understanding is that it will be
automatically trimmed to max-journal-size, if that option is set.
Do you know how it determines what is kept?
When the journal file reaches the max-journal-size value, roughly the
first half of it is discarded. But there are other actions that can
discard the whole journal file, such as "rndc freeze" on a type master
zone, "rndc retransfer" on a type slave one, etc.
To find out if a journal file goes back far enough for your purposes,
use the named-journalprint utility distributed with BIND. Although I
have to say I would hate to be dependent on this way of recovering a
lost zone file: you should probably be rethinking your whole backup
and recovery strategy.
--
Chris Thompson
Email: [email protected]
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