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Date: Thu, 18 Feb 2010 15:03:41 -0800
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From: Matt Reimer <mattjreimer@gmail.com>
To: Dan Naumov <dan.naumov@gmail.com>
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Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>,
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Subject: Re: booting off a ZFS pool consisting of multiple striped mirror 
	vdevs
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On Thu, Feb 18, 2010 at 10:57 AM, Matt Reimer <mattjreimer@gmail.com> wrote:

> On Tue, Feb 16, 2010 at 12:38 AM, Dan Naumov <dan.naumov@gmail.com> wrote:
>
>> > I don't know, but I plan to test that scenario in a few days.
>> >
>> > Matt
>>
>> Please share the results when you're done, I am really curious :)
>>
>
> Booting from a stripe of two raidz vdevs works:
>
> FreeBSD/i386 boot
> Default: doom:/boot/zfsloader
> boot: status
> pool: doom
> config:
>
>                     NAME      STATE
>                     doom     ONLINE
>                   raidz1     ONLINE
>             label/doom-0     ONLINE
>             label/doom-1     ONLINE
>             label/doom-2     ONLINE
>                   raidz1     ONLINE
>             label/doom-3     ONLINE
>             label/doom-4     ONLINE
>             label/doom-5     ONLINE
>
> I'd guess a stripe of mirrors would work fine too. If I get a chance I'll
> test that combo.
>

A stripe of three-way mirrors works:

FreeBSD/i386 boot
Default: mithril:/boot/zfsloader
boot: status
pool: mithril
config:

                    NAME      STATE
                 mithril     ONLINE
                  mirror     ONLINE
            label/mithril-0     ONLINE
            label/mithril-1     ONLINE
            label/mithril-2     ONLINE
                  mirror     ONLINE
            label/mithril-3     ONLINE
            label/mithril-4     ONLINE
            label/mithril-5     ONLINE

Matt