[maaku]

Every time you read or write from a RAID volume, it does perform validation and write-back on error detection. I think your mental model of how linux software RAID works needs updating.

I'm not trying to argue that mdadm is better than ZFS, just that in this case they pretty much compare the same.

[justincormack]

If the _drive_ reports a read error it will. If there is silent data corruption it wont. You can test this by using dd to corrupt the underlying data on a drive.

[maaku]

Hrm. I'm going to test that.