Matthias Meyer wrote:
> How I can reach the goals:
> - get and keep till end of the year one full backup each month
> - get and keep forever one full backup each year
From the config file:
> # Exponential expiry is specified using an array for $Conf{FullKeepCnt}:
> #
> # $Conf{FullKeepCnt} = [4, 2, 3];
> #
> # Entry #n specifies how many fulls to keep at an interval of
> # 2^n * $Conf{FullPeriod} (ie: 1, 2, 4, 8, 16, 32, ...).
> #
> # The example above specifies keeping 4 of the most recent full backups
> # (1 week interval) two full backups at 2 week intervals, and 3 full
> # backups at 4 week intervals, eg:
> #
> # full 0 19 weeks old \
> # full 1 15 weeks old >--- 3 backups at 4 * $Conf{FullPeriod}
> # full 2 11 weeks old /
> # full 3 7 weeks old \____ 2 backups at 2 * $Conf{FullPeriod}
> # full 4 5 weeks old /
> # full 5 3 weeks old \
> # full 6 2 weeks old \___ 4 backups at 1 * $Conf{FullPeriod}
> # full 7 1 week old /
> # full 8 current /
> #
> # On a given week the spacing might be less than shown as each backup
> # ages through each expiry period. For example, one week later, a
> # new full is completed and the oldest is deleted, giving:
> #
> # full 0 16 weeks old \
> # full 1 12 weeks old >--- 3 backups at 4 * $Conf{FullPeriod}
> # full 2 8 weeks old /
> # full 3 6 weeks old \____ 2 backups at 2 * $Conf{FullPeriod}
> # full 4 4 weeks old /
> # full 5 3 weeks old \
> # full 6 2 weeks old \___ 4 backups at 1 * $Conf{FullPeriod}
> # full 7 1 week old /
> # full 8 current /
Suppose that the Full Period is set to 6.97 as the default install set
it. Let's just call this 7.
Then $Conf{FullKeepCnt} = [4, 0, 12, 0, 0, 100];
will do something close to what you want. You will get 1 Backup per
week for 4 weeks, then 1 backup per month for 12 months (one full per
month till the end of the year) and then you will get 100 (this just
should be a big number) backups that are every 7-8 months, which is as
close to yearly as you can get without skipping any years. You could
add another 0 before the 100 and it would keep a backup about every 15
months or so, which would skip years from time to time. To make it more
exactly to years, you can play with $Conf{FullPeriod}. Hope this helps!
--
Randy Barlow
http://electronsweatshop.com
But you are a chosen race, a royal priesthood, a holy nation, a people
for his own possession, that you may proclaim the excellencies of him
who called you out of darkness into his marvelous light. Once you were
not a people, but now you are God's people; once you had not received
mercy, but now you have received mercy. ~1 Peter 2:9-10
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