Important Since version 2.2 we use a different algorithm for tracking changed pages. Thus, data recorded in the ptrack.map using pre 2.2 versions of ptrack is incompatible with newer versions. After extension upgrade and server restart old ptrack.map will be discarded with WARNING and initialized from the scratch.
ptracknow uses two slots to record page change information. It
helps significantly reduce number of false positives with the same
ptrack.map_size. See #5 for details. Many thanks to @funny-falcon for
ideas, theory and review!ptrack_get_pagemapset()now also displays a number of changed blocks
per file.- Added
ptrack_get_change_stat(start_lsn pg_lsn)that can desplay statistic
of changes (number of files, pages and size in MB) since specifiedstart_lsn.