[Bug 271071] mpr (LSI SAS3808) only finds 53 out of 70 disks in external HP D6020 enclosure

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 25 Apr 2023 22:07:23 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271071

            Bug ID: 271071
           Summary: mpr (LSI SAS3808) only finds 53 out of 70 disks in
                    external HP D6020 enclosure
           Product: Base System
           Version: 12.4-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: pen@lysator.liu.se

Created attachment 241748
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=241748&action=edit
camcontrol devlist output

In an attempt in fixing a problem where the HP ciss driver/HBA would go into a
deadlock (probably due to a bad disk) I tried to replace the HP HBA with a LSI
SAS3808 controller instead. 

It mostly works - only problem is that it only creates mappings for 53 och the
70 disks in the enclosure... (so the zpool import fails)

# camcontrol devlist | fgrep scbus0 | fgrep da|wc -l
      53
# mprutil show devices|fgrep SAS |wc -l
      71

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