All switched on again. There may still be some lingering issues.
Already had one issue, where it was updating one database, but the webside was still pointing to same database leading to some contention. That is fixed now.
I wasn't backing up some files like
1) the custom db_dump.xml files I use for projects that have subproject data - fixed I think.
2) my globalconfigs file!! aarghh, not much in it though so no harm
4) my cron entries - there may be some scripts not running due to this, hopefully I got them all (wcg badges and subproject data, wuprop hours data, generic badge updates)
5) mariadb conf file. I think this is recreated now, 2Gb tmpfs, plus all the sort and index settings I use. db is using 26Gb of Ram of the 32Gb on the server (it's max)