Problem after replacing drive in mirror

[bunk3m]

Hi.
I replaced two 3T drives with two 4T drives in my pool. I physically replaced one drive first and attached it to the pool. Then replaced the second drive.

The first replace & attach went smoothly. The zpool status was fine after the resilvering.

I'm having a problem with the second replace & attach. The zpool status says following:

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# zpool status
pool: Pool1
state: DEGRADED
status: One or more devices could not be opened.  Sufficient replicas exist for
	the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
   see: http://illumos.org/msg/ZFS-8000-2Q
  scan: resilvered 2.60T in 7h3m with 0 errors on Sun Mar 25 22:28:45 2018
config:

	NAME                      STATE     READ WRITE CKSUM
	Pool1                     DEGRADED     0     0     0
	  mirror-0                DEGRADED     0     0     0
	    11150646291478578060  UNAVAIL      0     0     0  was /dev/da1.nop
	    da1.nop               ONLINE       0     0     0
	    da2.nop               ONLINE       0     0     0

The issue is the 11150646291478578060 disk (which I think is actually da2.nop).
I thought I could detach or remove the disk but it doesn't appear to exist.

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# diskinfo -v 11150646291478578060
diskinfo: 11150646291478578060: No such file or directory

From the GUI, I get this:

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Pool1_mirror_0 	mirror 	Pool1 	/dev/11150646291478578060, /dev/da1, /dev/da2

I tried to synch from the GUI and export and import the pool but I can't seem to get rid of the issue.

What should I do to fix this?

Thanks in advance.

[ms49434]

zpool detach Pool1 11150646291478578060

[bunk3m]

Hey @ms49434! Thank you very much. That worked!