Boot Device ZFS Degradation

[Chris McDowell]

I have a non critical FreeNAS setup that is running non-ECC Ram. I am trying to do as much of this remotely as possible. I have a USB thumb drive for the Boot device.

Running pool status -v I get..

Code:

pool: Main

 state: ONLINE

  scan: scrub repaired 0 in 0 days 03:47:51 with 0 errors on Sun Feb 11 03:47:51 2018

config:


	NAME										  STATE	 READ WRITE CKSUM

	Main										  ONLINE	   0	 0	 0

	  gptid/913c108a-65f5-11e7-980a-d43d7e93454f  ONLINE	   0	 0	 0

	  gptid/7c87d28d-6c10-11e7-b65d-d43d7e93454f  ONLINE	   0	 0	 0


errors: No known data errors


  pool: freenas-boot

 state: DEGRADED

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: scrub repaired 0 in 0 days 00:04:57 with 1 errors on Wed Feb 14 07:00:19 2018

config:


	NAME		STATE	 READ WRITE CKSUM

	freenas-boot  DEGRADED	 0	 0	 0

	  da0p2	 DEGRADED	 0	 0	 0  too many errors


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


		freenas-boot/ROOT/11.1-U1@2017-07-10-21:27:08:/data/freenas-v1.db

I feel that this is more of a dying USB drive than anything. I am wondering where I can access that file and try replacing it with a different copy.


I am also having another issue where a SuperMicro SATA DOM that I got as a replacement for another that died is disappearing. I had it working today after a reboot but after trying to mirror the boot pool it just disappeared. Is there anything I should be doing to get more details on the issue.


This is a Core i5-3330 with 8GB of non-ECC RAM. Boot device is a 16GB USB Thumb Drive. Running 11.1-U1

 

[DrKK]

I can confirm that you have a dead USB boot drive. That should be replaced.

As for which file is busted, it's freenas-v1.db in one of the snapshots from 2017-07-10, which you probably don't need anyway. You can simply blow away that boot environment ;) and then be done with it.

Can't help you with the SATA dom.

 

[tvsjr]

And while you're repairing this, please consider moving your boot device to a single (or pair, if you're paranoid) small SSD. Even the junkiest SSD out there is orders of magnitude more reliable than a USB stick.

 

[Chris McDowell]

I had the SATA DOM and when it died I switched to the usb thumb drive while they sent me a replacement. The new replacement one though is not being cooperative. Perhaps they sent out a bad replacement. I'll try following up with them unless anyone knows some other commands to look into the issue more.