Broken Samsung SSD 850 EVO 1TB on lizard

One of our 2 Samsung SSD 850 EVO 1TB on lizard is not visible in the BIOS setup nor in the system. At boot I see:

[   57.604069] ata6: COMRESET failed (errno=-16)
[   62.660068] ata6: COMRESET failed (errno=-16)
[   62.664439] ata6: reset failed, giving up

This failure might be what caused the crazy system state that started around 01:40 today: 300+ load, no obvious CPU-hungry culprit.

So md0 and md1 are running in degraded state. We need to either speed up #16041 (closed) and migrate everything out of the remaining 1TB SSD to the new ones, or replace the faulty 1TB drive (hoping the drive is faulty, not the SATA port).

Related issues

• Related to #16041 (closed)
• Blocks #13242

Original created by @intrigeri on 16131 (Redmine)