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Date: Fri, 6 Jun 2014 16:16:03 -0700
Message-ID: <CAOjFWZ7C0SQiPa=VkYr330OiYua+DgJx65yYj7wTiLH5-c0EbQ@mail.gmail.com>
Subject: Re: Is ZFS Multi-vdev root pool configuration discovery supported?
From: Freddie Cash <fjwcash@gmail.com>
To: Martin Simmons <martin@lispworks.com>
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Typos courtesy of my Android phone.
On Jun 6, 2014 9:35 AM, "Martin Simmons" <martin@lispworks.com> wrote:
>
> Hi,
>
> Does anyone know if FreeBSD 9.2 (or indeed head) supports "Root On ZFS"
with a
> multi-vdev pool (e.g. 4 disks configured as two mirrored pairs)?
>
> Looking at the source,
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
> contains the comment:
>
> /*
>  * Multi-vdev root pool configuration discovery is not supported yet.
>  */
>
> but the code below it from r243502 suggests that this is no longer true.

FreeBSD 9.2 boots successfully off a 2-mirror vdev pool. I run that at
home. gptzfsloader  is installed on each disk in the system, and it will
boot off any of them (changed order manually in the BIOS to test).