Dell R710 with PERC H310. GPT issues and hardware raid or ZFS?

[Steven Hartland]

----- Original Message ----- 
From: "Sean Bruno" <sean_bruno at yahoo.com>
> > Some mfi controllers actually have a JBOD option, if it does you'll
> > be able to this controller if not watch out as using the RAID 0 option
> will almost certainly cause you pain.
> > 
> > mps as Jeremy has said is better option.
> 
> I note that the H310 in a test R420 that I have does indeed have a JBOD
> option.  This presents a disk as /dev/mfisyspdX which is totally
> befuddling.
> 
> On our stable/9, we get crash and burns with kernel panics and data
> corruption, but I haven't pursued it enough to be productive.  I did
> bump the machine to head and didn't see any difference.

I've not used stable/9 myself but there are know issues with older mfi
FW which causes TIMEOUTS which then results in panics on UFS.

The fix is to upgrade your FW.

In addition I've backed out the forced timeout on requests which was
MFC'ed to stable/9 in r252554:
http://svnweb.freebsd.org/base?view=revision&revision=252554

    Regards
    Steve

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