https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239801
Hiroki Sato <h...@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|Open |In Progress
--- Comment #5 from Hiroki Sato <h...@freebsd.org> ---
(In reply to Daniel Mafua from comment #4)
Thanks for your report. I have several other systems which are suffering from
the same problem. Here is information about this problem which I got so far:
* mfi(4) can report I/O errors which is not related to an actual hardware
failure
after upgrading FreeBSD to 11.3 or 12.0.
* The error does not depend on ZFS while ZFS is very likely to report
checksum errors of the zpool. On a system using UFS, the I/O error
can cause a system panic, boot failure, or something fatal.
* It seems that the I/O error depends on a specific firmware version. Some
older
firmware versions work fine even with mfi(4) on 11.3 and 12.0.
* If the device is also supported by mrsas(4), switching to it will solves
the error. Note that it will cause an incompatibility issue---mfi(4) uses
/dev/mfi* device nodes for the attached drives and mfiutil(8) as the userland
utility. mrsas(4) uses /dev/da* and a vendor-supplied utility such as
megaCli instead.
I am investigating what caused this regression but a workaround is to use
mrsas(4) instead of mfi(4) by specifying hw.mfi.mrsas_enable="1" at boot time.
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