ZFS itself has been around for a while, was originally part of Solaris IIRC. It's using it on Linux that's new. If you have a bad software write, ZFS should be

ZFS itself has been around for a while, was originally part of Solaris IIRC. It's using it on Linux that's new. If you have a bad software write, ZFS should be able to detect that in the same way it would a hardware error since the checksums won't match. Also worth noting that the checksums are themselves checksummed in a merkle tree. It also has a tool called "scrub" which can check data integrity without unmounting the disk. Of course if your filesystem has buggy code for checksumming/repair then you are boned whatever.