niedz., 21 kwi 2019 o 15:24 Joseph Graham <jos...@xylon.me.uk> napisał(a): > > > In fact, in many filesystems there are very weak – or no! – guarantees that > > the data you're reading is actually correct. Systems like ext4 simply assume > > that the data written to the disk will never change. AFAIK, it has > > essentially no mechanism at all to deal with silent data corruption. > > It's not fair to say there's "no mechanism at all to deal with silent > data corruption". The hard-disk/ssd does checksum every block. If a block > fails a checksum the disk keeps trying until it reads a block that > matches the checksum, else gives up with a read-error. > > So really it's a matter of whether you trust your drives to do their > job correctly.
If we want data integrity, then checks should also be done for memory: https://fmad.io/blog-10g-capture-data-integrity.html but these are completely different stuff - I don't think you implement this type of thing on your small home server. > -- > Joseph Graham; a tech-rights advocate, an Englishman and a Catholic.
