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On Fri, 19 Jul 2019 14:21-0400, Garrett Wollman wrote:

> Other than laboriously running "zpool labelclear -f /dev/somedisk" for
> every piece of media that comes into my hands, is there anything else
> I could have done to avoid this?

I usually incorporate the hostname in the pool names. At one point I 
was contemplating if I should also have generation numbers in the pool 
names. E.g.:

enterprise_zroot
enterprise_zdata

enterprise_zroot_g01
enterprise_zdata_g01

enterprise_zroot_g02
enterprise_zdata_g02

-- 
Trond.