installation to 3-4+ (depending on vdev type) vdevs would result in odd
error messages where the zpool `create' command appeared to repeat itself
(an artifact of printf when you supply too many arguments -- caused by
neglecting to properly quote the multi-word expansion of $*vdevs when
creating the pool(s)). Example error below (taken from bsdinstall_log):
DEBUG: zfs_create_boot: Creating root pool...
DEBUG: zfs_create_boot: zpool create -o altroot=/mnt -m none -f "zroot" \
ada0p3.nop ada1p3.nopzpool create ada2p3.nop "ada3p3.nop"
DEBUG: zfs_create_boot: retval=1 <output below>
cannot open 'ada1p3.nopzpool': no such GEOM provider
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