I just installed a ZFS pfSense 2.4.2 system (RAID10 ZFS) on a HP DL360G7 (48GB of RAM) I had lying around.

I connected all 4 SAS disks to an LSI RAID card (SAS2008-4i) updated to latest firmware in IT mode, as suggested in all the FreeBSD forums for NAS servers) which recognized all 4 disks properly as  individual drives.

The install went well as far as I can tell, but everytime I boot I see the following errors, with some variation:

gptzfspool : error 4 LBA xxxxxxxxxx
gptzfspool : error 4 LBA xxxxxxxxxx
gptzfspool : error 4 LBA xxxxxxxxxx
gptzfspool : error 4 LBA xxxxxxxxxx

and then pfSense starts without issues.

Sometimes there are more and different errors, but at the minimum these errors appear. but it always boots up properly.  Are those errors I should worry about? The drive SMART status are OK, no errors reported.

This is meant to be a server installed in a remote location (long drive to fix anything on site) so it needs to be rock solid, and I tend to hunt down even tiny errors until I either fix them or understand them. I don`t understand these right now.