Permanent errors have been detected

[Tock]

As the title suggests I have a small problem^^. Freenas Version: FreeNAS-9.10.2-U2 (e1497f2)

Specs:

Mainboard: Asrock C2750D4I
RAM: 32 GB Kingston ValueRAM DDR3-1333 ECC DIMM
PSU: 360 Watt Seasonic G Serie
Storage: 6x 6TB WD Red in encrypted RaidZ-2

Zpool status -v output:

Code:

  pool: Volume_1
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: scrub repaired 0 in 7h51m with 1 errors on Sun May  7 11:39:03 2017
config:

	NAME												STATE	 READ WRITE CKSUM
	Volume_1											ONLINE	   0	 0	 1
	  raidz2-0										  ONLINE	   0	 0	 2
		gptid/10e9b928-275f-11e7-8b90-d05099265246.eli  ONLINE	   0	 0	 0
		gptid/fb708c46-250f-11e7-849d-d05099265246.eli  ONLINE	   0	 0	 0
		gptid/04f13591-16de-11e7-a58e-d05099265246.eli  ONLINE	   0	 0	 0
		gptid/6f9bc2e3-166b-11e7-94d6-d05099265246.eli  ONLINE	   0	 0	 0
		gptid/c815bcfa-2587-11e7-ba66-d05099265246.eli  ONLINE	   0	 0	 0
		gptid/3da8bf3a-27d8-11e7-b7c3-d05099265246.eli  ONLINE	   0	 0	 0

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

		<0x115f>:<0x3723f>

  pool: freenas-boot
state: ONLINE
  scan: scrub repaired 0 in 0h4m with 0 errors on Sun May  7 03:49:58 2017
config:

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

errors: No known data errors

It is an encrypted pool thats maybe why it could not detect which file is corrupted. My problem with this is why does ZFS not know which drive is at fault? Why did Raid-Z2 not help against a single file error? What can I do to find out which file it is?

 

[Robert Trevellyan]

It kinda looks like the errors are in metadata, based on which row of the zpool status output they appear on. If so, that explains why the file can't be identified, and may force you into backing up the data and rebuilding the pool.

And @DrKK has a message for you about encrypting your pool.

 

[Jailer]

And with corrupt metadata and nothing showing on the drives I'd be running memcheck on your memory to make sure it's good.

 

[DrKK]

And @DrKK has a message for you about encrypting your pool.

Unless Required by Law or Policy:

DO.
NOT.
ENCRYPT.
YOUR.
ZFS.
POOLS.
EVER.
EVER.
EVER.EVER.

 

[Stux]

Strange.

 

[joeschmuck]

Strange.

I know, he left out

EVER.