How to setup ZFS mirrored boot device

[joe mcguckin]

I did a scrub, it finished within 30 seconds.


But the error was that it could not find the boot device it was looking for. I’ve seen this before: If you create a boot device in slot 0 (gets named da0) then move that drive to a different slot,
FreeBSD will fail in the same manner.

Joe McGuckin
ViaNet Communications

joe at via.net
650-207-0372 cell
650-213-1302 office
650-969-2124 fax



> On Feb 1, 2021, at 4:34 PM, Tim Rice <tim at xinuos.com> wrote:
> 
> 
> 
> 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
> 
> 
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