Missing SSD driving causing pool to fail

[roderick1st]

Hi all,

Hoping for a bit of help!

My FreeNAS box crashed this afternoon and refused to start until I had removed on of the SSD drives I had installed which had obviously had a failure.

I currently have 4 traditional drives (2TB each) and 2 SSD drive one for ZIL and one for L2ARC.

Im not sure which of the cache SSD's it was which failed and I haven't replaced it yet but is there a way to bring the Pool back online without it or have I set it up incorrectly where there is no chance of recovery? Sorry to be vague about which disk is now missing as it was a couple of years ago when I set it all up.

Code:

[root@freenas ~]# zpool import																									
   pool: Storage																													
	 id: 8882450676816422605																										
  state: UNAVAIL																													
status: One or more devices are missing from the system.																		 
action: The pool cannot be imported. Attach the missing																			
		devices and try again.																									
   see: http://illumos.org/msg/ZFS-8000-6X																						
config:																															
																																	
		Storage										 UNAVAIL  missing device													
		  mirror-0									  ONLINE																	
			gptid/c07d5909-6176-11e5-b9f8-e4115bac48ac  ONLINE																	
			gptid/c0c91657-6176-11e5-b9f8-e4115bac48ac  ONLINE																	
		  mirror-1									  ONLINE																	
			gptid/c11b5df5-6176-11e5-b9f8-e4115bac48ac  ONLINE																	
			gptid/c16dfa53-6176-11e5-b9f8-e4115bac48ac  ONLINE																	
		cache																													 
		  gptid/c1a61b46-6176-11e5-b9f8-e4115bac48ac																				
																																	
		Additional devices are known to be part of this pool, though their														
		exact configuration cannot be determined.		

Code:

[root@freenas ~]# camcontrol devlist																								
<ST32000645NS 0004>				at scbus0 target 0 lun 0 (ada0,pass0)															
<ST32000645NS 0004>				at scbus0 target 1 lun 0 (ada1,pass1)															
<ST32000645NS 0004>				at scbus1 target 0 lun 0 (ada2,pass2)															
<ST32000645NS 0004>				at scbus1 target 1 lun 0 (ada3,pass3)															
<SanDisk SDSSDA120G U21010RL>	  at scbus3 target 0 lun 0 (ada4,pass4)															
<JetFlash Transcend 4GB 1100>	  at scbus5 target 0 lun 0 (pass5,da0)

Code:

[root@freenas ~]# gpart show																										
=>	 34  7907261  da0  GPT  (3.8G)																								
	   34	 1024	1  bios-boot  (512K)																						
	 1058		6	   - free -  (3.0K)																						 
	 1064  7906224	2  freebsd-zfs  (3.8G)																						
  7907288		7	   - free -  (3.5K)																						 
																																	
=>		34  3907029101  ada0  GPT  (1.8T)																						
		  34		  94		- free -  (47K)																					
		 128	 4194304	 1  freebsd-swap  (2.0G)																				
	 4194432  3902834696	 2  freebsd-zfs  (1.8T)																				
  3907029128		   7		- free -  (3.5K)																					
																																	
=>		34  3907029101  ada1  GPT  (1.8T)																						
		  34		  94		- free -  (47K)																					
		 128	 4194304	 1  freebsd-swap  (2.0G)																				
	 4194432  3902834696	 2  freebsd-zfs  (1.8T)																				
  3907029128		   7		- free -  (3.5K)																					
																																	
=>		34  3907029101  ada2  GPT  (1.8T)																						
		  34		  94		- free -  (47K)																					
		 128	 4194304	 1  freebsd-swap  (2.0G)																				
	 4194432  3902834696	 2  freebsd-zfs  (1.8T)																				
  3907029128		   7		- free -  (3.5K)																					
																																	
=>		34  3907029101  ada3  GPT  (1.8T)																						
		  34		  94		- free -  (47K)																					
		 128	 4194304	 1  freebsd-swap  (2.0G)																				
	 4194432  3902834696	 2  freebsd-zfs  (1.8T)																				
  3907029128		   7		- free -  (3.5K)																					
																																	
=>	   34  234441581  ada4  GPT  (112G)																						 
		 34		 94		- free -  (47K)																					 
		128  234441480	 1  freebsd-zfs  (112G)																				 
  234441608		  7		- free -  (3.5K)

Code:

[root@freenas ~]# glabel status																									
									  Name  Status  Components																	
gptid/e0df20cf-615d-11e5-a740-e4115bac48ac	 N/A  da0p1																		 
gptid/c06af1a7-6176-11e5-b9f8-e4115bac48ac	 N/A  ada0p1																		
gptid/c07d5909-6176-11e5-b9f8-e4115bac48ac	 N/A  ada0p2																		
gptid/c112a3c8-6176-11e5-b9f8-e4115bac48ac	 N/A  ada1p1																		
gptid/c11b5df5-6176-11e5-b9f8-e4115bac48ac	 N/A  ada1p2																		
gptid/c0bc2d54-6176-11e5-b9f8-e4115bac48ac	 N/A  ada2p1																		
gptid/c0c91657-6176-11e5-b9f8-e4115bac48ac	 N/A  ada2p2																		
gptid/c161894f-6176-11e5-b9f8-e4115bac48ac	 N/A  ada3p1																		
gptid/c16dfa53-6176-11e5-b9f8-e4115bac48ac	 N/A  ada3p2																		
gptid/c1a61b46-6176-11e5-b9f8-e4115bac48ac	 N/A  ada4p1

Any help would be hugely appreciated.

Thanks,

Rod.

 

[roderick1st]

*SSD Drive causing pool to fail - 'Driving' me mad possibly!

 

[tvsjr]

A quick search shows a way to do it from the command line, but jgreco indicated it was best performed through the GUI. Here a couple threads to review:
https://forums.freenas.org/index.php?threads/failed-slog-disk.40348/
https://forums.freenas.org/index.php?threads/correct-way-to-remove-slog.43401/

I'd start in the GUI, see if it will let you remove the SLOG device from the pool there.

 

[roderick1st]

Thanks tvsjr,

I jumped the gun a little and did the following on the console :

Code:

zpool import -m -f -F  Storage

Which brought the pool back as degraded. I then read through your suggested posts and removed the missing cache as described which has now brought the pool to a Healthy status.

However I now have an issue where the mount point ie /mnt/Storage is not there when trying to do a SMB share. Any suggestions?

 

[Robert Trevellyan]

Detach the SSDs, then export the pool from the CLI and import it again from the GUI.