>Not even after an ioscan
But what ioscan are you talking about?
ioscan is not the same as ioscan -funCdisk (the first rescan all the hardware, not the second...)

So before looking forward, as suggested, reboot with your disk subsystem up, perhaps go single user then init 2 then do an ioscan, the ioscan -funC disk and see if you see your disks now. config files wont help if you dont succeed here

Next, are you in cluster?

In cluster the vg are in exclusive mode and so are not activated automatically, If you were and no more then update /etc/lvmrc file to automatically activate those VGs

All the best