Meanwhile fsck on a traditional filesystem will gleefully mangle data that's actually fine in face of transient corruptions. I've had this happen more than onc

Meanwhile fsck on a traditional filesystem will gleefully mangle data that's actually fine in face of transient corruptions. I've had this happen more than once, both with bad RAM and bad IO controllers - previously fine static data suddenly being detached from the filesystem and appearing in little bits in lost+found, because bit flips effectively causes it to hallucinate problems to "fix".