Due to malfunctioning hardware on the s2 database primary master (T194867) we need to do a failover (T194870) to another database host.
In order to be able to do so, we'd need have a 30 minutes read-only window for those wikis.
The affected wikis are:
```
bgwiki
bgwiktionary
cswiki
enwikiquote
enwiktionary
eowiki
fiwiki
idwiki
itwiki
nlwiki
nowiki
plwiki
ptwiki
svwiki
thwiki
trwiki
zhwiki
```
**Date: 13th June 2018
Time: 06:00AM UTC until 06:30AM UTC
Impact: The above wikis will be on read only, so no new edits will be able to happen. Reads will remain unaffected.**
We are requesting 30 minutes, but we hope to have it done in around 5 minutes, if everything goes as planned, however, we'd like to get some more room in case something unexpected happens.