Date: Thu, 22 Jul 2010 01:14:06 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Charles Sprickman <spork@bway.net> Cc: Adam Vande More <amvandemore@gmail.com>, "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-stable <freebsd-stable@freebsd.org>, Dan Langille <dan@langille.org> Subject: Re: Using GTP and glabel for ZFS arrays Message-ID: <20100722081406.GA8483@icarus.home.lan> In-Reply-To: <alpine.OSX.2.00.1007220357570.33454@hotlap.local> References: <4C47B57F.5020309@langille.org> <AANLkTimbYGpC0aYGnE61J5ZopQVD9m8hrz07CZAnsvsq@mail.gmail.com> <AANLkTikwNEXpTz-hpKLta0T3Lx67nRHtOaVLp_c7C8BI@mail.gmail.com> <4C47E610.2040409@langille.org> <4C47EC47.5090000@yandex.ru> <4C47ED09.7020808@langille.org> <alpine.OSX.2.00.1007220327170.33454@hotlap.local> <4C47F4F1.8030804@langille.org> <alpine.OSX.2.00.1007220357570.33454@hotlap.local>
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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@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@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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