On Tue, May 10, 2011 at 03:57:28PM -0700, Brandon High wrote:
> On Tue, May 10, 2011 at 9:18 AM, Ray Van Dolson <rvandol...@esri.com> wrote:
> > My question is -- is there a way to tune the MPT driver or even ZFS
> > itself to be more/less aggressive on what it sees as a "failure"
> > scenario?
> 
> You didn't mention what drives you had attached, but I'm guessing they
> were normal "desktop" drives.
> 
> I suspect (but can't confirm) that using enterprise drives with TLER /
> ERC / CCTL would have reported the failure up the stack faster than a
> consumer drive. The drives will report an error after 7 seconds rather
> than retry for several minutes.
> 
> You may be able to enable the feature on your drives, depending on the
> manufacturer and firmware revision.
> 
> -B

Yup, shoulda included that.  These are regular SATA drives --
supposedly "Enterprise" whatever that gives us (most likely a higher
MTBF number).

We'll probably look at going with nearline SAS drives (only increases
cost slightly) and write a small SEC rule on our syslog server to watch
for 0x31111000 errors on servers with SATA disks only so we can at
least be alerted more quickly.

Ray
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