[#node-PruneLockInfo]
= xref:node.adoc[node]::PruneLockInfo
:relfileprefix: ../
:mrdocs:

Records the oldest block an external component still needs, to guard it from pruning&period;

== Synopsis

Declared in `&lt;node&sol;blockstorage&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct PruneLockInfo;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:node/PruneLockInfo/height_first.adoc[`height&lowbar;first`] 
| Height of earliest block that should be kept and not pruned
|===



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