Hello, there have been a lot of patches on pm80xx lately and I decided to test again with kernel 6.1.57. Unfortunately the issue remains. I have uploaded a dmesg excerpt with debug logging that shows what happens when I run a random i/o test with 128k block reads with 32 threads for 1 minute here: https://drive.google.com/file/d/1OFpcaZmjkhUzU3b8UYd7mVDBhJzmVnhg/view?usp=drive_link The system becomes super slow for almost 4 minutes and a lot of i/o errors occur. The seagate disks and the controller work fine except when put together. Regards, Nick
