LSI supported mps(4) driver available

[Matt Thyer]

On 26 March 2012 23:55, Gary Palmer <gpalmer at freebsd.org> wrote:

> On Mon, Mar 26, 2012 at 08:05:59PM +1030, Matt Thyer wrote:
> > On Mar 26, 2012 3:43 AM, "Garrett Cooper" <yanegomi at gmail.com> wrote:
> > >
> > > On Sun, Mar 25, 2012 at 5:16 AM, Matt Thyer <matt.thyer at gmail.com>
> wrote:
> > > > Has this driver been MFC to 8-STABLE yet ?
> > > >
> > > > I'm asking because I updated my NAS on the 4th of March from 8-STABLE
> > > > r225723 to r232477 and am now seeing 157,000 interrupts per second on
> > irq
> > > > 16 where my SuperMicro AOC-USAS2-L8i resides (this card uses the LSI
> > > > SAS2008 chip).
>

[snip]


> > After encountering this problem I updated my firmware from phase 7 to
> phase
> > 11 but this did not fix things.
> >
> > My question is: "Is the LSI driver even in 8-STABLE yet?".
> >
> > If not I'll upgrade to 9-STABLE to get the new driver.
> >
> > If it is, then I want to downgrade to just before it came in to see if
> this
> > high interrupt rate problem is fixed.
>
> I'm no export in svn, however:
>
> http://svnweb.freebsd.org/base?view=revision&amp;revision=230922
>
> would appear to suggest that the new driver is in 8-Stable
>
> Gary
>

It's painful to take this system back to r230921 due to intolerance for
downtime from it's users so I'd like to investigate the cause of the
problem and try patches/sysctls/whatever first.

The drives I'm using are 7 x WDC WD20EARS-00M (3 are AB50, 4 are AB51) and
1 x WD20EARX-00P AB51.
The WD20EARX-00P AB51 is a SATA 3 (6 Gbps) drive but the others are all
SATA 2 (3 Gbps).

I know the driver doesn't like mixed speeds in IR mode but I'm flashed with
IT firmware as ZFS is doing my RAID (raidz2).

I was having problems with the WD20EARX-00P AB51 drive being faulted by ZFS
until I updated the firmware to 11 and now ZFS is happy (I've also done a
full extended drive SMART test and the drive is fine).

So what do people suggest (before reversion to r230921) ?