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Clarify check frequency default behavior (#653).

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Dan Helfman 2023-03-17 10:09:36 -07:00
parent bdfe4b61eb
commit e6605c868d
1 changed files with 12 additions and 6 deletions
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18
docs/how-to/deal-with-very-large-backups.md
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@ -57,8 +57,8 @@ cron job).
Another option is to customize your consistency checks. By default, if you
omit consistency checks from configuration, borgmatic runs full-repository
checks (`repository`) and per-archive checks (`archives`) within each
repository, no more than once a month. This is equivalent to what `borg check`
does if run without options.
repository. (Although see below about check frequency.) This is equivalent to
what `borg check` does if run without options.
But if you find that archive checks are too slow, for example, you can
configure borgmatic to run repository checks only. Configure this in the
@ -70,8 +70,9 @@ consistency:
- name: repository
```
<span class="minilink minilink-addedin">Prior to version 1.6.2</span> `checks`
was a plain list of strings without the `name:` part. For example:
<span class="minilink minilink-addedin">Prior to version 1.6.2</span> The
`checks` option was a plain list of strings without the `name:` part, and
borgmatic ran each configured check every time checks were run. For example:
```yaml
consistency:
@ -112,8 +113,13 @@ consistency:
This tells borgmatic to run the `repository` consistency check at most once
every two weeks for a given repository and the `archives` check at most once a
month. The `frequency` value is a number followed by a unit of time, e.g. "3
days", "1 week", "2 months", etc. The `frequency` defaults to `always`, which
means run this check every time checks run.
days", "1 week", "2 months", etc.
The `frequency` defaults to `always` for a check configured without a
`frequency`, which means run this check every time checks run. But if you omit
consistency checks from configuration entirely, borgmatic runs full-repository
checks (`repository`) and per-archive checks (`archives`) within each
repository, at most once a month.
Unlike a real scheduler like cron, borgmatic only makes a best effort to run
checks on the configured frequency. It compares that frequency with how long