Hello,
I am looking for a simple to use backup software and found dirvish that
looks very promising. (I have read about it in the german c't magazine a
year ago.)
When starting to set up the system I ask myself how expiring works. The
problem is that the machine is not running continuously, so I cannot use
a cronjob to start the backup. I want to trigger it manually also
because the external backup drive should be turned off whenever possible.
In the debian-howto of the dirvish-debian-package I e.g. found the
following expire-rules:
expire-rule:
# MIN HR DOM MON DOW STRFTIME_FMT
* * * * 1 +3 months
* * 1-7 * 1 +1 year
with the explanation:
the first line has "1" for DOW (day of week), i.e. Monday. Hence backups
made on a Monday will stay around for 3 months. The second line says
that backups made in the first week of the month (DOM = day of month)
won't expire until after one year.
Now my question:
What happens if I did not run a backup on the 1. DOW and none in the
first week of a month? Does dirvish use the next happening backup-image
or is this image-time-slot left blank (so a backup image would be missing)?
Or my question asked the other way around: I would like dirvish to keep
all sporadicly run backups for 2 months and one backup per month for 2
years, independent of the time the backups were taken. Is this possible?
Thank you,
Gert
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