[Bug 224496] mpr and mps drivers seems to have issues with large seagate drives

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224496

--- Comment #5 from Matthias Pfaller <matthias.pfaller at familie-pfaller.de> ---
Comment on attachment 205003
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=205003
/var/log/messages during device resets

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: 20.00.07.00, Driver:
21.02.00.00-fbsd
Jun 12 08:51:35 nyx kernel: mps0: IOCCapabilities:
185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR>

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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