Critical Error on Boot Drive & Backing up while preserving hardlinks.

[The_Ianator]

Got an error today: "The boot volume state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected."

Zpool Status:

Code:

[root@freenas ~]# zpool status																									
  pool: Encrypted_RaidZ2_Volume																									
state: ONLINE																													
  scan: scrub repaired 0 in 10h57m with 0 errors on Sun Feb 19 10:57:26 2017														
config:																															
																																	
		NAME												STATE	 READ WRITE CKSUM											
		Encrypted_RaidZ2_Volume							 ONLINE	   0	 0	 0											
		  raidz2-0										  ONLINE	   0	 0	 0											
			gptid/3b260adc-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/2ae0452d-a611-11e6-ad5c-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/3ccc570c-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/3daa79ba-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/3e7d774e-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/3f531c7c-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/40281805-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
			gptid/40f451fb-f15b-11e5-86ba-d05099c0adf0.eli  ONLINE	   0	 0	 0											
																																	
errors: No known data errors																										
																																	
  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 12K in 0h6m with 0 errors on Mon Mar 20 03:51:07 2017														
config:																															
																																	
		NAME		STATE	 READ WRITE CKSUM																					
		freenas-boot  ONLINE	   0	 0	 0																					
		  da0p2	 ONLINE	   0	 0	 3																					
																																	
errors: No known data errors	

I want to know what I need to do now. Do I need to replace the Boot Drive? If it needs replacing is the process made difficult because of the encrypted pool? Is this a good time to move to a non-encrypted pool and/or to switch to freenas 10?

I'd also like to make a better backup. Currently most files exist secondarily on one external or another, but they are all horribly disorganized. My thoughts were to get some kind of JBOD enclosure and a couple of 8tb seagate archive drives. One problem is that I've made heavy use of hardlinks, the current data uses 12TB of space on the Freenas box, but manually dragging it to externals would require over 20TBs of space. I've also had some problems in windows with file paths being to long and not copying when trying to backup.

In short: How bad is this error and can it be fixed, and how do I go about making a full backup.

 

[rs225]

It isn't bad yet. The errors were in metadata, and the second copy was used to repair.

You should upgrade to mirrored USB boot, and then you can detach the original stick and stop using it. Choose a USB stick that is recommended for this purpose in the manual.