I have a special and burning hatred for mdadm and to a lesser extent LVM. I suspect that nowadays they are much easier to look after, but when I first was intr

I have a special and burning hatred for mdadm and to a lesser extent LVM. I suspect that nowadays they are much easier to look after, but when I first was introduced, the quality of the documentation was utterly appalling. WE had special classes with old sysadmins who passed on the secret knowledge for how to not fuck everything with mdadm. LVM is slightly better, apart from the early false promise that was LVM snapshots which were essentially just a placebo(this might have changed now). I've only ever seen LVM used once successfully in production. That was on a 60 bad LFF raid draw to create a single namespace over 4 hardware raid-7 disk array things. Every other time it turn out to be a clusterfuck. ZFS if youre poor, GPFS if youre rich. I'm sure there are newer systems but they almost always fail ever the resilience, latency or performance test. (Cough gluster, ceph, anything that uses HTTP as a transport system)