Add possibility to mark all pages at e.g. restore time as not writable for new
incoming data
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Key: CORE-5125
URL: http://tracker.firebirdsql.org/browse/CORE-5125
Project: Firebird Core
Issue Type: New Feature
Components: Engine, GBAK
Reporter: Karol Bieniaszewski
We have now possibility to divide database into multiple files (i call this
"Database speces").
This feature extend usability of this feature.
"Database spaces" and feature to "prevent write to database page new data".
I mean that you restore database with above switch (it explicitly include
USE_ALL_SPACE switch) and all existing pages are marked as "not modify for new
data" (below i call it MARKED).
When something is updated new record version go into new page, and in page
marked, only allowed operation is remove old record version.
And now all new/modified data go into new place - eg. into fast accessible
storage. Old data are on some slow storage.
sumarrize:
- flag for database page "prevent incoming new data"
- restore with switch "prevent incoming new data to all existing pages"
- engine should ommit pages marked for storing new data
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