[Bug 198463] [mfi] COMMAND 0x... TIMEOUT AFTER ## SECONDS (LSI MegaRAID 9361-8i)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198463

Sibananda Sahu <sibananda.sahu at avagotech.com> changed:

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                 CC|                            |sibananda.sahu at avagotech.co
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--- Comment #5 from Sibananda Sahu <sibananda.sahu at avagotech.com> ---
Quick recap:

>>>hw.mfi.mrsas_enable=1 only works on 10.1-RELEASE, it does nothing on 9.3-RELEASE. 

Siba: Yes true. To use mrsas(4) on FreeBSD-9.3 one must have to remove the
mfi(4) completely from kernel and install the mrsas(4) separately as a module.

>>>With hw.mfi.mrsas_enable=1 I was able to install 10.1-RELEASE without any timeouts or other errors. I'm currently running a bonnie++ test to see how stable things are but it's looking very good so far.

Siba: NA

>>>The difference is easy to tell, with the mfi(4) driver a virtual disk shows up as mfid0, with the mrsas(4) driver it's detected as da0. 

Siba: Yes that is also true because mrsas(4) uses CAM layer and mfi(4) uses the
block layer for the drive exposure.

>>>If time permits today I'll see if I can create a custom 9.3-RELEASE install with the mfi(4)/mrsas(4) driver removed, to test the driver from LSI (an mrsas driver can be downloaded for 7.4, 8.2, 8.3, 8.4, 9.0, 9.1, 9.2, 9.3 and 10.0).
>>>The driver from LSI should be newer than the one that came with FreeBSD.

Siba: The driver available in the LSI website will have the most recent code
changes than the FreeBSD-xx.x inbox code (May not true always but most of the
times).
As the downloaded package does not contain the binaries for 10.1, you can
download the source code, compile and install yourself on your 10.1 machine to
witness the truth.

Thanks,
Siba

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