We'd like to request a 30 minutes read-only time window for the following wikis to performance maintenance on their primary database master:
arwiki cawiki eswiki fawiki frwiktionary hewiki huwiki kowiki metawiki rowiki ukwiki viwiki
s7 also includes centralauth database, which means some operations might fail during the read-only period, such as: GlobalRenames, Changing/Confirming emails, logging into new wikis, password changes...
Impact: Those wikis will go read-only for around 30 minutes (hopefully a lot less). Reads will not be impacted
When: Wed 25th August at 06:00AM UTC.