Due to once-upon-a-time having used the pg-hier patch with PostgreSQL I have been unable to back up the database using the newest version. I therefore needed to restore the old version, dump the current database using that, upgrade back to the most recent and restore everything. This process caused roughly half an hour of downtime for anything depending on a postgresql database a little while ago. The good news is that backups are now working again :)
I’ve just rebooted the server to install two new disks and replace some fans, which caused about 20 mins of downtime just now. Also, I had to stop PostgreSQL during a software upgrade, causing it to be unavailable for half an hour prior to rebooting the server. Everything should be back to normal now though.