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in-memory snapshots will reuse existing snapshot code when possible. So key design decisions stay the same. It assumed that reader knows and understand IEP-43. So design description will focus on difference on persistence and in-memory snapshot.

API

New optional flag --modeinclude-in-memory will be added.
Possible values are PERSISTENT, ALL.
Default value is PERSISTENT to keep existing behavior of commandBy default, flag disabled to preserve existing behavior.

Example:

> ./control.sh --snapshot --create SNP --include-in-mode ALLmemory

Creation

1. PME guarantees to make sure of visibility of all dirty pages:

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