13-CURRENT won't boot after switch to sysutils/openzfs

[marco]

On Sat, Aug 22, 2020 at 10:10:14PM +0000, you (marco) sent the following to [freebsd-current] :
> On Sat, Aug 22, 2020 at 04:48:48PM +0000, you (marco) sent the following to [freebsd-current] :
> > On Sat, Aug 22, 2020 at 12:31:24PM -0400, you (Ryan Moeller) sent the following to [freebsd-current] : > > > > > So besides not being able to boot from the openzfs 2020080800 package install, I can't figure out why I can't upgrade the openzfs pkg to 2020081800 (which is the latest one in ports so I presume a package also exists of that same version)
> > 
> > If that won't work either I'll see if I can build sysutils/openzfs from ports but I'd rather not mix packages and ports.
> 
> building and installing the GENERIC kernel did not do anything.
> I can confirm BE r364030-OpenZFS booted with GENERIC but I got dropped
> into the mountroot prompt again.
> Before I got there I saw:
> 
> Trying to mount root from zfs:zroot/ROOT/r364030-OpenZFS failed with
> error 2: unknown file system.
> 
> Guess I'll try to install sysutils/openzfs from ports next.

Not happy with having to install the port but that worked.
I removed openzfs and openzfs-kmod via pkg remove.
Then  did a 'make install clean' from sysutils/openzfs (2020081800) with r364030 BE
active.
Once I confirmed the port installed a newer /boot/modules/openzfs.ko I
destroyed r364030-OpenZFS and created it again so it would be in sync
with r364030 and it would have the latest openzfs.ko.

When I imported my backup pool (single drive, 1 vdev)
/etc/zfs/zpool.cache was automatically created.

So now I have 2 zpool cache files

 [~] ls -l /boot/zfs/zpool.cache /etc/zfs/zpool.cache
 -rw-r--r--  1 root  wheel  1456 Aug 22 22:04 /boot/zfs/zpool.cache
 -rw-r--r--  1 root  wheel  3088 Aug 22 22:54 /etc/zfs/zpool.cache

 [~] zpool get cachefile zroot backup
NAME    PROPERTY   VALUE      SOURCE
backup  cachefile  -          default
zroot   cachefile  -          default

So the port does work even with running the GENERIC-NODEBUG kernel.

Is it even possible to build a port only into a new BE and not the
current one given how /usr is not mounted?
Now I had to polute the active BE which could get me into trouble.
I was hoping using BEs I could experiment by installing a port straight into the mounted BE.
If that is possible I wouldn't mind getting some pointers on how to make that work.

-- 
Marco van Lienen -- FreeBSD enthusiast
https://keybase.io/scarcry , GnuPG id: 8580E6CB
"The Tuck Pendleton machine...zero defects."
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