docs: since-block archive in the configuration table - #361
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benaadams
approved these changes
Sep 9, 2026
LukaszRozmej
approved these changes
Sep 10, 2026
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What
The since-block archive shape was described in prose only; the configuration table on the archive-nodes page had columns for the full, windowed and address-slice archives and none for it. This adds the fourth column, so the flag set for "keep everything from block X onward, forever" reads at a glance:
FlatDb.HistoryRetention=SinceBlock,FlatDb.HistoryRetentionSinceBlock,History.Pruning=UseAncientBarrierswith both ancient barriers at the same block, slices optional.Also
One sentence in the since-block bullet: tracing a block replays it over its parent's state, so a node that must trace from a given block sets the floor one block below it. Without it, an operator who sets the floor at the first block they need to trace cannot trace that block.
Style
Behaviour only, no example values; every option links to its entry in the generated configuration reference, as on the rest of the page.