May 10, 20233 yr Hi All, I currently have an LSI 9211-8i that is in IT mode (at least as far as I can tell) and it has worked flawlessly up until now. I have an AMD based system (5600g on a b550 mobo), and so I am trying to install a GTX 980 Ti to be used for Plex transcoding. But, when I install the gpu in the system, none of the disks connected to the LSI controller are recognized. I have updated my motherboard BIOS to see if that fixed anything, no such luck. What is weird is that once I remove the gpu, all drives are detected and the server functions as normal. I am attaching my diagnostics file (hopefully this gives up the culprit). Thank y'all in advance, I've been pulling my hair out trying to figure out what the issue is. --ItHurtsMyHart nacgdchesserver-diagnostics-20230510-1651.zip
May 10, 20233 yr Author UPDATE: I have been digging around in the logs and noticed an mpt2sas_cm0 error: mpt2sas_cm0: diag reset: FAILED mpt2sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:12336/_scsih_probe()! Upon running dmesg |grep mpt: # dmesg |grep mpt [ 0.235940] Dynamic Preempt: voluntary [ 0.235981] rcu: Preemptible hierarchical RCU implementation. [ 25.828743] mpt3sas version 42.100.00.00 loaded [ 25.830598] mpt3sas 0000:01:00.0: can't disable ASPM; OS doesn't have ASPM control [ 25.832924] mpt2sas_cm0: 64 BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (81747020 kB) [ 43.108732] mpt2sas_cm0: sending diag reset !! [ 45.396426] mpt2sas_cm0: Stop writing magic sequence after 20 retries [ 45.397933] mpt2sas_cm0: System Register set: [ 45.438670] mpt2sas_cm0: diag reset: FAILED [ 45.438980] mpt2sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:12336/_scsih_probe()! [ 79.678528] md: import_slot: 29 empty The question is, why are the mpt2sas/mpt3sas drivers impacted at all by the gpu?
May 12, 20233 yr Author On 5/11/2023 at 5:15 AM, JorgeB said: Which slot are you sung for the HBA, CPU or SB? Did you try swapping them? I tried swapping the slots and no luck, same issue. Not sure what's wrong. Is there anything blatantly wrong in the diagnostics? Or did I get the diagnosis right?
May 13, 20233 yr It might be an issue with PCI Express lane bandwidth: I see this note in your motherboard manual: * When using PCIe x1 slot (PEX1_1), PCIe x16 slot (PEX16_SB_1) will be adjusted to x1 lanes. This to me seems like as soon as you use one of the x1 lanes, it will make the PCIe x16 a x1 lane as well - Really strange if that is the case.
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