FreeBSD 13.0 Upgrade Gotcha document?

[andrew clarke]

On 2021-04-16 13:47:26, Doug McIntyre (merlyn at geeks.org) wrote:

> Is there a document somewhere documenting all the "gotchas" on doing a
> FreeBSD 13.0 binary upgrades now-a-days?

...

> *) Zpools probably need to have 'zpool upgrade' done on them.

I think this is only true if you want clean output from "zpool status"?
FreeBSD 13.0 should function fine on older pool versions.

> *) Make sure to re-install your boot loader before you
>   `zpool upgrade zroot` to not break bootloader.

I believe "zpool upgrade" previously warned the admin to run
"gpart bootcode" to install the most recent bootcode for a ZFS
boot pool, but in 13.0 that warning is gone.