[#kernel-MemPoolOptions-persist_v1_dat]
= xref:kernel.adoc[kernel]::xref:kernel/MemPoolOptions.adoc[MemPoolOptions]::persist&lowbar;v1&lowbar;dat
:relfileprefix: ../../
:mrdocs:

Whether to write mempool&period;dat using the legacy V1 serialization&period;

== Synopsis

Declared in `&lt;kernel&sol;mempool&lowbar;options&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool persist&lowbar;v1&lowbar;dat = &lcub;DEFAULT&lowbar;PERSIST&lowbar;V1&lowbar;DAT&rcub;;
----


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