Can't find bootable partition

Hi,

I have 14.0-RELEASE installed with two drives in a ZFS mirror on a x86_64 system. I've been testing a very minor patch, rebooting, testing, etc. This is installed with EFI.

Out of the blue, it won't come back.

It detects both drives. I see these errors.

zio_read error: 5
zio_read error: 5
zio_read error: 5
ZFS: i/o error - all block copies unavailable
ZFS: failed to read pool zroot directory object

Can't find /boot/zfsloader
Can't find /boot/loader
Can't find /boot/kernel/kernel

I'm a little mystified. I know there were some talks of ZFS corruption. I was using the latest patches for the kernel, although world was from 14.0-RELEASE as it came out.

I rebooted this probably a dozen times at least with no issue prior to this.

Where should I start? Does this sound like I made some blunder or that the hardware randomly failed in some strange way?

Thank you!

-Henrich