Cannot attach USB boot mirror

[JprSA]

Apologies if this is a duplicate; I've been searching now for days to find instructions for creating a mirror of the ZFS boot for FreeNAS 9.3. I've been running happily with one USB boot, and I've been backing up the config but I'd like a secondary as another level of safety (and I have no other use for the port). When I finally found the instructions (System -> Boot -> Status -> Attach) it failed with the following error:

Error: Failed to attach disk: cannot attach da1p2 to gptid/c7f98499-76e4-11e4-8821-00110a5b077e: no such device in pool

When I look at Storage -> View Disks I can see da1 in this list so maybe FreeNAS has already decided it should be a storage drive?

Is there something I'm doing wrong? Do I have to manually create a pool or manually add the USB drive to an existing pool? Can I even touch the boot pool?

 

[dlavigne]

Are you using these instructions: http://doc.freenas.org/9.3/freenas_system.html#mirroring-the-boot-device ?

 

[JprSA]

Yes indeed. It's the "Attach Disk" dialog button in those steps that throws the error after a few seconds.

 

[JprSA]

If it matters the USB drives I'm attempting to mirror are both the same make/model/size - Sandisk Cruzer Fit 8GB

 

[dlavigne]

Before creating a bug report, let's make sure that FreeNAS is detecting the correct 2nd USB device. Can you attach screenshots of both Volumes -> View Disks and Boot -> Boot Status.

 

[JprSA]

Disks:

Boot status:

 

[JprSA]

Just following up: Does this look like something that needs to be fixed on my end or should I create a bug report?

 

[dlavigne]

Sorry for the lag. Yes, please create a bug report and post the issue number here.

 

[JprSA]

Created bug #7289 (https://bugs.freenas.org/issues/7289). Thanks :)