Comment 16 for bug 1823037

seems I finally found the real issue

in the bios of my Gigabyte x570 UD , when I have 4G encode option enabled I have silent data corruption
( or at least if its enabled along side with IOMMU )

I need to make another array that I can kill to keep testing with , but I can literally go into the bios enable 4G reboot then start a zfs scrub and instantly have crc errors pop up everywhere , reboot disable do a scrub and it's all good , seems to only kick in when multiple disks are in use

In the past ~2012 with my Gigabyte F2A85x-UP4 AMD A10 5800k I also had data issues with IOMMU enabled ... never had issues with my intel i7 4790k build , so it could very well just be AMD IOMMU that is causing it for me