How to setup ZFS mirrored boot device

[Tim Rice]

On 2/1/21 3:56 PM, joe mcguckin wrote:
> I tried this but it’s not quite working.
>
> LSI controller flashed with IT firmware.
>
> 2) 1T SSD drives
>
> During the install process, I select to create a mirrored ZFS root. It appears to be created 
> and there is a zroot dataset. zpool status shows everythings ok.
>
> Now it gets interesting:
>
> I pull one drive after  poweron but before FreeBSD starts - everything boots ok, zpool status reports one drive missing and suggests that I replace the missing drive and do a “zpool online”
> I do so and zpool reports everything’s ok.
>
> Now lets reboot and just after Bios power on, pull drive 2. FreeBSD boots until it wants to mount the root partition, can’t find it, dumps me into a menual drive selection prompt.
>
> Hmm, I thought the point of a mirror was that *either* drive could fail.
>
> What am I doing wrong?
You did wait for the resilver to complete after bringing the 1st drive
back online
before the 2nd test, right?

>
> Thanks,
>
> Joe
>
>
> Joe McGuckin
> ViaNet Communications
>
> joe at via.net
> 650-207-0372 cell
> 650-213-1302 office
> 650-969-2124 fax
>
-- 

Tim Rice
tim.rice at xinuos.com