[Bug 239801] mfi errors causing zfs checksum errors

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239801

marco at tols.org changed:

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                 CC|                            |marco at tols.org

--- Comment #1 from marco at tols.org ---
I had this exact same problem with a large array on a PERC H730/P.

I could fix this by changing the controller driver from mfi to mrsas.

See
https://www.freebsd.org/cgi/man.cgi?query=mrsas&apropos=0&sektion=0&manpath=FreeBSD+11.3-RELEASE&arch=default&format=html
on details on how to do that. (loader.conf variable)

Please make sure you do a "zfs scrub" afterwards to autoheal all checksum
errors.

Marco van Tol

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