From owner-freebsd-fs@freebsd.org  Wed Feb 15 14:39:35 2017
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From: Peter Pauly <ppauly@gmail.com>
Date: Wed, 15 Feb 2017 09:39:33 -0500
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Subject: Moving a bootable ZFS USB between systems
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I installed FreeBSD 11 with an encrypted GELI root and ZFS (zroot) on a USB
stick. My intention was to boot off of it on several systems. It works fine
on the original system but not on a second system.

I get this message:
Mounting from zfs:zroot/ROOT/default failed with error 5.

The USB stick is da0.

The geli part looks like it works, but the zfs mount fails.

Should I be able to move the stick between systems or do I need to do a
zpool export zroot first? If so, where is the best place to put this
(rc.shutdown?)

I asked this question on freebsd-questions and didn't get a response.

Thanks for your help.