are journal files required on slave?

[Tony Finch]

Klaus Darilion <klaus.mailinglists at pernau.at> wrote:
>
> But on a server with slave-zone only (fetched by ixfr) - do I need a
> journal at all? How can I disable it - by setting the max-size to 0?

The journal reduces the cost of re-writing zone files: basically, the IXFR
just gets appended to the journal, which is relatively cheap. For BIND
9.11 and earlier, it's probably worth setting it to some modest non-zero
size (64KB? 1MB?). If you have any large frequently-updated zones they
might benefit from a bigger journal to reduce zone file re-writes. In BIND
9.12 the max-journal-size is automatically set based on the zone size, so
you should be able to remove any max-journal-size settings from your
config. (I contributed this feature because I got fed up with worrying
about them.)

Tony.
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