[Bug 229745] ahcich: CAM status: Command timeout

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229745

John Baldwin <jhb at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jhb at FreeBSD.org

--- Comment #31 from John Baldwin <jhb at FreeBSD.org> ---
I believe I ran into the same thing though in my case the drives would bounce
(come right back after detaching), but since they all bounced at once it always
killed the zpool (the drives were all mirrors in a single pool).  I found that
disabling hotplug for each SATA port in the BIOS setup caused the bouncing to
stop and the system has been stable for a day and a half (previously when this
started it wouldn't make it to multiuser without losing the zpool).  I'm not
sure if I had outsmarted myself by enabling this in the BIOS setup at one point
but figured I'd leave a bread crumb here in case it helps someone else.

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