> the safest RAID experience seems to be filesystem on mdadm on dm-integrity on disk partition, so that the RAID and RAID errors are invisible to the filesystem.
I suppose I don't understand this. Why would this be the case?
dm-integrity solves the problem of identifying which replica is good and which is bad. mdadm solves the problem of reading from the replica identified as good and fixing / reporting the replica identified as bad. The filesystem doesn't notice or care.
No. I don't use ZFS since it's not licensed correctly, so I have no opinion on it. And BTRFS raid is not safe enough for use. So I'm saying "Use filesystem on mdadm on dm-integrity".
I suppose I don't understand this. Why would this be the case?