[rescue] FreeBSD and ZFS, was Re: 3ware raid

Zachary Giles zgiles at gmail.com
Wed Jul 27 19:18:09 CDT 2011

I can look at my menu for you if you'd like, but there was some config
option on each controller that said "present unassigned disks as jbod"
or soemthing like that.

On Wed, Jul 27, 2011 at 4:49 PM, Phil Stracchino <alaric at metrocast.net>
> On 07/27/11 19:03, Mouse wrote:
>>>> The 3ware controllers have JBOD mode that turns all the "hardware"
>>>> raid off.
>>> Except that 3Ware JBOD mode is not *PRECISELY* JBOD.  It's closer to
>>> "a bunch of whole-single-disk logical volumes".
>> What, exactly, is JBOD here?
>> I don't know the hardware that's been under discussion.  But I do work
>> with a machine containing
>> twe0 at pci2 dev 2 function 0: 3ware Escalade
>> twe0: interrupting at ioapic1 pin 4 (irq 10)
>> twe0: 12 ports, Firmware FE7S, BIOS BE7X
>> twe0: Monitor ME7X, PCB Rev5    , Achip 3.20    , Pchip
>> and its JBOD appears to be pretty much exactly what I would think:
>> direct access to the whole drive.  That machine has some pdcsata cards
>> as well, and I've moved disks between pdcsata and twe without needing
>> to touch the data on them and it's all Just Worked.
> Hmm.  On the 9500S, I couldn't get it to present unadorned raw disks.
> --
>  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
>  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
>  Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
>                 It's not the years, it's the mileage.
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Zach Giles
zgiles at gmail.com

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