9.10 ISO upgrade with mirrored boot device

[Pheran]

Extensive description of my system here. I'm currently running 9.3.1-20160415.

I'd like to upgrade to 9.10 but I don't want to use 9.10.1 because of the grub bugs, so I'm trying to do an ISO upgrade to 9.10-20160627. My boot pool is on mirrored USB sticks, da8 and da9. I mount the 9.10 ISO with IPMI and boot it up. If I select both da8 and da9 for the install, I get the message:

can't import 'freenas-boot': more than one matching pool
import by numeric ID instead

I guess this means I shouldn't select both devices when trying to upgrade. If I select only one, the next screen is a message warning that it's going to erase everything on the drive, which doesn't give me a warm fuzzy feeling that I'm entering an upgrade process instead of a fresh install. Two questions:

1) Is the warning message about erasing everything normal; should I proceed and hope it upgrades?

2) If I'm only selecting one device, will I have to do something after the upgrade to repair the freenas-boot mirror?

Thanks!

 

[dlavigne]

It may be easier to save your config, do an ISO install to the mirror, then restore your config.

 

[Pheran]

It may be easier to save your config, do an ISO install to the mirror, then restore your config.

If 9.10 is capable of importing a 9.3.1 config, then that sounds worth a shot.

I'm torn as to whether I should just wait for the "9.10.1-U1" release that claims to be coming in a few days though. Maybe it will make 9.10.1 usable for upgrade.

 

[danb35]

If 9.10 is capable of importing a 9.3.1 config, then that sounds worth a shot.

It is, did that when I upgraded to my "new" server about 4 months ago.