Boot drive online - but unrecoverable error?

[BrennanK]

Last night I got an email saying my boot drive was online, but experienced an unrecoverable error.
This morning I ran a ‘zpool status -v’ and got this:

Code:

[user@freenas] ~# zpool status -v 
pool: freenas-boot
state: ONLINE
status: One or more devices has experienced an unrecoverable error.  An
attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://illumos.org/msg/ZFS-8000-9P
scan: scrub repaired 0 in 0h3m with 0 errors on Tue Oct 11 03:48:26 2016
config:
NAME										  STATE	 READ WRITE CKSUM
  freenas-boot								  ONLINE	   0	 0	 0
	gptid/1b3ddb72-e64e-11e5-bbdb-00259064a020  ONLINE	   0	 0	 2
  errors: No known data errors

pool: noname
state: ONLINE
scan: scrub repaired 0 in 7h24m with 0 errors on Sun Oct  2 07:24:24 2016
config:
NAME											STATE	 READ WRITE CKSUM
  noname										ONLINE	   0	 0	 0
	raidz2-0									  ONLINE	   0	 0	 0
	  gptid/8427db69-e65c-11e5-9866-00259064a020  ONLINE	   0	 0	 0
	  gptid/853b6cbb-e65c-11e5-9866-00259064a020  ONLINE	   0	 0	 0
	  gptid/864af191-e65c-11e5-9866-00259064a020  ONLINE	   0	 0	 0
	  gptid/8760f0cb-e65c-11e5-9866-00259064a020  ONLINE	   0	 0	 0
  errors: No known data errors
[user@freenas] ~# 

From what I can tell my boot drive is the issue because of the checksum value. Is that correct?
I currently have a single 16GB flash drive as my boot drive. If the boot drive is actually the issue here I’d like to replace it and then add a second to mirror them. Is there any kind of guide on how to add a second boot drive into a already running/configured system? What about replacing the boot drive?

I want to check with those who know more than myself before I jump in with both feet and maybe screw something up.



Thanks for the assistance!

 

[m0nkey_]

This is covered in the documentation: http://doc.freenas.org/9.10/system.html#mirroring-the-boot-device

 

[BrennanK]

This is covered in the documentation: http://doc.freenas.org/9.10/system.html#mirroring-the-boot-device

I just found that part, thanks.

Does that mean I am correct in thinking the boot drive is the culprit?

EDIT. A little clarification. The reason I am questioning this is because of the documentation linked in the error. http://illumos.org/msg/ZFS-8000-9P

It says the failed device was in a replicated state and as such it could recover. My boot drive is not replicated. How can it recover then?