ZFS ZFS Boot Issue

[Cath O'Deray]

I know, you're beyond this …

… zpool import zroot without a -R option from the live USB image …

… but for reference, that might have caused clobber.

Also, I have a slight preference for mount_msdosfs(8) when mounting msdosfs.

 

[dpemmons]

I had a similar issue as OP on my HP ProLiant MicroServer Gen8 Server with 4x 12tb SATA drives. I'd originally installed FreeBSD 14.1 with zroot - bog standard install; worked fine. A few weeks ago I upgraded to 14.2 and started seeing the same "zio_read error 97" - which was apparently due to following the upgrade instructions

# freebsd-update fetch
# freebsd-update install

Now the freebsd-update(8) utility can fetch bits belonging to 14.2-RELEASE. During this process freebsd-update(8) will ask for help in merging configuration files.

# freebsd-update upgrade -r 14.2-RELEASE
# freebsd-update install

where I should have rebooted before the second upgrade/install. Fortunately I was able to revert and things worked again, and then I installed with rebooting in the middle there and things were fine.

Fast forward to this past week, and like OP had a power failure and the machine refused to boot again with the same error.

My eventual solution: enable legacy SATA support and disable the BIOS-controlled "write cache". It booted just fine after that.

Hope this helps whoever comes along next.