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Config:
```
- type: push
...
conflict_resolution:
initial_replication: most_recent | all | fali
```
The ``initial_replication`` option determines which snapshots zrepl
replicates if the filesystem has not been replicated before.
If ``most_recent`` (the default), the initial replication will only
transfer the most recent snapshot, while ignoring previous snapshots.
If all snapshots should be replicated, specify ``all``.
Use ``fail`` to make replication of the filesystem fail in case
there is no corresponding fileystem on the receiver.
Code-Level Changes, apart from the obvious:
- Rework IncrementalPath()'s return signature.
Now returns an error for initial replications as well.
- Rename & rework it's consumer, resolveConflict().
Co-authored-by: Graham Christensen <graham@grahamc.com>
Fixes https://github.com/zrepl/zrepl/issues/550
Fixes https://github.com/zrepl/zrepl/issues/187
Closes https://github.com/zrepl/zrepl/pull/592
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37 lines
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.. include:: ../global.rst.inc
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Conflict Resolution Options
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===========================
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::
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jobs:
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- type: push
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filesystems: ...
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conflict_resolution:
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initial_replication: most_recent | all | fail # default: most_recent
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...
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.. _conflict_resolution-initial_replication-option-send_all_snapshots:
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``initial_replication`` option
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------------------------------
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The ``initial_replication`` option determines how many snapshots zrepl replicates if the filesystem has not been replicated before.
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If ``most_recent`` (the default), the initial replication will only transfer the most recent snapshot, while ignoring previous snapshots.
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If all snapshots should be replicated, specify ``all``.
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Use ``fail`` to make replication of the filesystem fail in case there is no corresponding fileystem on the receiver.
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For example, suppose there are snapshosts ``tank@1``, ``tank@2``, ``tank@3`` on a sender.
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Then ``most_recent`` will replicate just ``@3``, but ``all`` will replicate ``@1``, ``@2``, and ``@3``.
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If initial replication is interrupted, and there is at least one (maybe partial) snapshot on the receiver, zrepl will always resume in **incremental mode**.
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And that is regardless of where the initial replication was interrupted.
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For example, if ``initial_replication: all`` and the transfer of ``@1`` is interrupted, zrepl would retry/resume at ``@1``.
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And even if the user changes the config to ``initial_replication: most_recent`` before resuming, **incremental mode** will still resume at ``@1``.
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