Hello, are both systems identical what comes to hardware? Mainly mobo.
If no and they are dual socket systems, then it may be that one of the
systems is designed to route all PCI-e via one socket so that all drive
slots can be used just 1 socked populated. And another is designed so
taht only half of the drive slots works when only 1 socket is populated.
At least I have read something like this previously from this list.
// JiiPee
Finlayson, James M CIV (USA) kirjoitti 26/01/2022 klo 22.17:
I apologize in advance if you can point me to something I can read about mdraid besides the source code. I'm beyond the bounds of my understanding of Linux. Background, I do a bunch of NUMA aware computing. I have two systems configured identically with a NUMA node 0 focused RAID5 LUN containing NUMA node 0 nvme drives and a NUMA node 1 focused RAID5 LUN identically configured. 9+1 nvme, 128KB stripe, xfs sitting on top, 64KB O_DIRECT reads from the application.
