error ZFS-8000-8A - corrupted data on boot stick

[PierceIt]

A few day after upgrading to 9.3 stable via the web gui (which worked successfully) I got a RED alert indicating a CRITICAL error as follows:

"CRITICAL: The boot volume state is ONLINE: One or more devices has experienced an error resulting in data corruption. Applications may be affected."

Running "zpool status -xv" shows the following:

[root@freenas ~]# zpool status -xv
pool: freenas-boot
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://illumos.org/msg/ZFS-8000-8A
scan: none requested
config:

NAME STATE READ WRITE CKSUM
freenas-boot ONLINE 0 0 0
da0p2 ONLINE 0 0 0

errors: Permanent errors have been detected in the following files:

freenas-boot/ROOT/FreeNAS-9.3-STABLE-201412091831:<0xa42c>

This appears to implicate my boot USB stick (which is fairly new and a good quality one) and the install file is now corrupt?

What would be the best course of action to:
- safely deal with the corrupted data and issue with the stick without losing any configurations or ability to boot, etc?
- clear the error status ?

thanks for any tips - I'll start researching this as well.

 

[Ericloewe]

Backup your config, reinstall FreeNAS and import your config.

If you want to avoid this in the future, I recommend you use a mirrored boot device.

 

[PierceIt]

Done

and boot is now mirrored across two USB sticks

thanks for the tip Ericolewe - that's a cool new feature!