New build; want to copy data from ancient 8.2 to new build

[greco]

I've been running 8.2 since 2012 some time (it wasn't broke, so I didn't fix it) and it's been rock solid and still is, but have decided it's time to upgrade.

My current drive config is ZFS mirror across 3x 2TB SATA drives.

Code:

[root@bucket] ~# zpool status
  pool: primary
 state: ONLINE
 scrub: scrub completed after 3h33m with 0 errors on Sun Apr 22 06:33:45 2018
config:

		NAME											STATE	 READ WRITE CKSUM
		primary										 ONLINE	   0	 0	 0
		  mirror										ONLINE	   0	 0	 0
			gptid/7fa5c7db-0f59-11e2-808e-f46d04d60585  ONLINE	   0	 0	 0
			gptid/8003c8df-0f59-11e2-808e-f46d04d60585  ONLINE	   0	 0	 0
			gptid/806077eb-0f59-11e2-808e-f46d04d60585  ONLINE	   0	 0	 0

errors: No known data errors

What I want to know is, can I break one of the drives off of the mirror, stick it in the new machine (11.1-U4 I'm guessing), and send|receive or some other ZFS magic to pull all of the data from that drive to the new system? My concern is that 8.2 is so old, there might be comparability issues with the much newer 11.1 version.

Note: new system is fully new build based on lots of reading of these forums and recommendations that were made.

Thoughts, recommendations, scoffs welcome.

 

[Stux]

Yes. You want to split the mirror.

Then you could locally ZFS send it to your new pool.

Of course, you could just do it across the network as well, 2TB is not that much data :)