--- Comment #4 from Matthias Pfaller <> ---
We just did configure a backup server with eight seagate ironwulf
(ST12000VN0007-2GS116) 12TB disks connected to a SAS2008:

Jun 12 08:51:35 nyx kernel: mps0: <Avago Technologies (LSI) SAS2008> port
0x8000-0x80ff mem 0xdf700000-0xdf703fff,0xdf680000-0xdf6bffff irq 32 at device
0.0 on pci3
Jun 12 08:51:35 nyx kernel: mps0: Firmware:, Driver:
Jun 12 08:51:35 nyx kernel: mps0: IOCCapabilities:

After writing ~200gb to our pool it started reseting. I did a

sysctl dev.mps.0.debug_level=0x$((0x1+0x2+0x4+0x10+0x20))

The resulting trace is attached.

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