ofaaland commented on this pull request.
> @@ -54,6 +54,11 @@ struct uberblock {
/* highest SPA_VERSION supported by software that wrote this txg */
uint64_t ub_software_version;
+
+ /* These fields are reserved for features that are under development: */
+ uint64_t ub_mmp_magic;
+ uint64_t ub_mmp_delay;
+ uint64_t ub_checkpoint_txg;
Please add a third field for MMP, `uint64_t ub_mmp_sequence`, placed after
`ub_mmp_delay`. We will use it to provide sub-second resolution to allow
faster detection of foreign imports.
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