Run pt-table-checksum on s4 - commonswiki.
The following tables do not have a PK and thus need to be excluded:
archive_save blobs categorylinks change_tag click_tracking click_tracking_user_properties cur edit_page_tracking hidden imagelinks interwiki iwlinks l10n_cache langlinks linkscc localisation_file_hash log_search logging_pre_1_10 math module_deps msg_resource msg_resource_links objectcache oldimage pagelinks prefstats prefswitch_survey profiling querycache querycache_info querycachetwo revtag searchindex securepoll_lists securepoll_msgs securepoll_properties site_identifiers site_stats tag_summary templatelinks text transcache translate_messageindex translate_reviews user_former_groups user_newtalk user_properties uw_campaign_conf watchlist
The __wmf_checksums is placed on:
commonswiki.__wmf_checksums