Comment 13 for bug 1913639

So I got the ps2 adapter and... it looks like this has nothing to do with ZFS.

I have 4 SATA drives in this machine.
sda - ST2000DM001-1ER1 - zpool storage
sdb - ST2000DM008-2FR1 - zpool storage
sdc - Samsung SSD 860 - my main drive. zpool rpool and bpool.
sdd - Samsung SSD 850 - windows - used with vfio + qemu. (This is also where my kernel commandline arguments are coming from, isolating one gpu and a usb controller. The iommu groups are clean and only contains the gpu+usb controller, nothing else).

When in the crashkernel, I can see:
sda and sdb. Which now translates into the Samsung ssd 850 and one of the storage pool drives. So half of my storage pool and the windows drive. The 2 other sata drives are not there. And I see a lot of errors for ata5.00: failed to IDENTIFY (I/O error, err_mask=0x100)

The motherboard is a MSI X99A SLI PLUS. I'm.. happy with closing this issue at this point. If there's anything quick I can do to help debug this absolutely. But I feel like this moved from a category of "zfs initrd script needs patching" into "weird motherboard bug" - in a motherboard I'm planning to replace anyway.