From: bas on
When should one hardcode providers names in metadata when creating
gjournal, gmirror and gstripe volumes, and when should one not? Or,
what are the advantages and disadvantages?

I had to swap out the SATA controller on a system and got tripped up
because the old controller named the disks ad0, ad2, ad4, ad6 while
the new one named them ad0, ad2, ad6, ad8 -- and I had hardcoded the
providers' names. That was easy to fix, but I wonder if I had really
needed to use the '-h' option.