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

[Sibananda Sahu]

-----Original Message-----
From: owner-freebsd-bugs at freebsd.org
[mailto:owner-freebsd-bugs at freebsd.org] On Behalf Of
bugzilla-noreply at freebsd.org
Sent: Monday, March 16, 2015 5:55 PM
To: freebsd-bugs at FreeBSD.org
Subject: [Bug 198463] [mfi] COMMAND 0x... TIMEOUT AFTER ## SECONDS (LSI
MegaRAID 9361-8i)

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

--- Comment #4 from sirdice at gmail.com --- I had a conversation with
Sibananda Sahu, I'm not sure if it made it to here.

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 9.3 one must have to remove the mfi(4)
completely from kernel and install the mrsas(4) separately.

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.

>>>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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