How do I RAID1 and existing VG and LV to a new disk? Oh also fuck me but new disk is 0.02TB smaller so the partition table is different... My guess is I need to repartition the existing VG and LV to a smaller size, copy the partition table over without UUIDs and then mdadm a new VG and add both disks in?
This is on proxmox so it's essentially just debian.
Why didn't I run a RAID1 set up from the start? Cos proxmox doesn't allow you to. Either ZFS or go home.