Using GTP and glabel for ZFS arrays

[Jeremy Chadwick]

On Thu, Jul 22, 2010 at 04:03:05AM -0400, Charles Sprickman wrote:
> On Thu, 22 Jul 2010, Dan Langille wrote:
> >Well, I don't have anything to support hotplug.  All my stuff is internal.
> >
> >http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs430.ash1/23778_106837706002537_100000289239443_171753_3508473_n.jpg
> 
> The frankenbox I'm testing on is a retrofitted 1U (it had a scsi
> backplane, now has none).
> 
> I am not certain, but I think with 8.1 (which it's running) and all
> the cam integration stuff, hotplug is possible.  Is a special
> backplane required?  I seriously don't know...  I'm going to give it
> a shot though.

Yes, a special backplane is required.
 
> Oh, you also might get NCQ.  Try:
> 
> [root at h21 /tmp]# camcontrol tags ada0
> (pass0:ahcich0:0:0:0): device openings: 32

NCQ should be enabled by default.  "camcontrol identify" will provide
much more verbose details about the state of these disks.  Don't confuse
"identify" with "inquiry".

-- 
| Jeremy Chadwick                                   jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |