I have a problem with my home server setup. The problem is that sometimes, but really rarely, it reverts (for a lack of a better term) all my data back to an earlier state (somewhere between months ...
I have a RAID 5 array using mdadm and ext4 as its filesystem. We got a strong power surge and one of the drive faulted, while another one got a bit flakky, aka "click of death". I replaced the disks ...