[Bug 211713] NVME controller failure: resetting

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211713

--- Comment #10 from MacLemon <bugs.freebsd.org at maclemon.at> ---
I'm having this issue on a fairly recent SuperMicro Xeon-D 1541 (SuperServer
5018D-FN4T) system as soon as I put _two_ NVMe SSD in. When using only the
onboard M.2/M-Key Slot on the motherboard I can install FreeBSD 11.0-RELEASE p1
just fine.
As soon as I put another NVMe SSD in, via PCIe Card adapter, I geh the
resetting controller messages that IPTRACE already mentioned. There is no
difference whether I put both on the PCIe card or one on the motherboard and
one on the PCIe card.

I'm using the SuperMicro AOC-SLG3-2M2 for adding the second NVMe SSD which are
Samsung SM961/256GB models.

Since I basically cannot put the system into production due to this bug at the
moment, I'm happy to test everything that may help to track this down and fix
it. If you need any more details of the hardware or BIOS/UEFI settings used I'm
happy to provide them.
I'll also investigate Terry Kennedy's loader.conf hint and check if it helps
and also how much of a performance hit the system takes.

Best regards
MacLemon

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